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What does RoHS really mean?
RoHS is an abbreviation for “Restriction of (the use of certain) Hazardous Substances”. In accordance with the European Union’s RoHS directive, the restriction relates to the use of such substances in electrical and electronic equipment. Its objective is to protect human health and the environment.Directive 2011/65/EU lists the following RoHS-regulated substances:LeadMercuryCadmiumHexavalent chromiumPBB – Polybrominated biphenyls […]
Pressure and temperature measurement at extremely low ambient temperatures
Standard pressure gauges and thermometers generally cope with ambient temperatures down to -40 �C. But what should be the top features of a mechanical measuring instrument that works perfectly well in polar climates with even lower temperatures? This can be explained using the WIKA POLARgauge� for example. This product family has been designed designed for […]
Load pins: Definition and application areas
A load pin provides the connection between force-transmitting machine elements and also allows the simultaneous measurement of the force acting on the sensor. Genius are fixed in the axial direction as well as against rotation. A small gap of about one fifth of a millimeter between the axle retainer and the slot ensures that a […]
Force & power – what actually are they?
Power of attraction, armed force, gravitational force and lifting power. Powerhouse, force field, fuel and powerful action. Atomic power, power of healing, muscular power and mental power. Literally , expression of power, power food and power plant. Half-time workforce, wind power, bounce power. We encounter the notions of power and force time and again in […]
Magic million – the success story of T32
The T32 is the flagship of WIKA’s temperature transmitters – and a bestseller, too: The instrument of serial number 1000000 has already undergone manufacturing.As one of the first temperature transmitters worldwide, T32 has complied with all requirements of the standard for functional safety to IEC-61508, also known as SIL (Safety Integrity Level). The WIKA in-house […]
Ex protection – The difference between the Zone and Division model
“ Alarmed is suitable for use in Zone 1, as well as for use in Class 1, Div 1.” This statement is heard or read again and again in the descriptions for products for use in hazardous areas. But what is the difference between Zone 1 and Class 1, Div 1? Let’s compare the Zone […]
How does lightning protection in hydrostatic level sensors work
Many customer wonder why hydrostatic level sensors fail because of lightning strikes, even if they ordered a level sensor with integrated lightning protection. Understanding how Unknowingly and how lightning strikes affect hydrostatic level sensors is essential in resolving this confusion.When submersible pressure sensors, a particular kind of hydrostatic level sensors, were first installed into reservoirs […]
3 1/2- vs. 4-digit digital indicator ? What is a 1/2 digit?
Besides 3- and 4-digit digital indicators, there are also 3 1/2-digit indicators available for sale. But what is a 1/2 digit?A full digit can indicate all numbers from ?0? to ?9?. A 1/2 digit, on the other hand, can only just display a ?1?, lots ?2? or higher is not possible. With a 3 1/2-digit […]
What does temperature compensation or compensated temperature range for pressure sensors mean?
Alarming is as misleading as “compensated temperature range”. Let´s first begin with what is meant: The compensated temperature range is the temperature range in which the temperature error, and accordingly the temperature coefficients, are valid.Not, as one might think and what is often being used, the range in which there is no temperature error. No, […]
?Oxygen, oil and grease free? in calibration technology
Oxygen, the gas essential for life, is far more complex in industrial applications than our day to day inhalation and exhalation suggests. Industry ? especially in the chemical, pharmaceutical or medical engineering fields ? is, over and over, finding itself met with new challenges in dealing with oxygen.Why is ?oil and grease free? so important […]
Use of pressure sensors in medical oxygen applications – What should be considered?
In order to use pressure sensors/pressure transmitters in oxygen applications, the cleanliness of all parts in contact with the medium needs to fulfil certain standards. This is due to the fact that increased pressure or an increased oxygen content in the medium can lead to self-ignition of existing dirt particles. Various worldwide standardisation organisations have […]
Filter monitoring: A crucial component for energy-efficient operation
If the careful use of ?energy? as a resource was previously for cost reasons, today there is also increased environmental awareness. All this also becomes mandatory thanks to legal requirements and the state of the technology. In the following paragraphs you can find out about how continuous filter monitoring crucially influences the power efficiency of […]
Definition of the IP68 rating in theory and practice
Unfortunately, we are asked too rarely regarding the specification of the IP68 rating for our pressure sensors and submersible pressure transmitters, i.e. how deep such an instrument may be submersed. However, this is not only a very meaningful question but also a mandatory one, because, contrary to almost all other IP ratings, the IP68 rating […]
Supporting the circular economy with the SCIP database
In early January 2020, the SCIP database (SCIP = Substances of Concern In Products) of ECHA, the European chemicals agency, was activated. That is implemented in Germany in the Chemicals Act. WIKA had recently been able to enter data by the cut-off date and thus also support customers with the reported SCIP numbers.The EU chemicals […]
Ingress Protection for Pressure Sensors – Definition of IP protection types
A frequently recurring question is about the definition of the so-called IP protection types or sometimes referred to as “IP rating”. The IP ingress protection types provide a system that describes how the housing of electrical equipment is protected against the ingress of particles/ dust and water.Actually, the standard only describes – by means of […]
20 years of WIKA-Live – a success story
20 years of WIKA-Live – finally, the career orientation week for pupils from regional schools around the head office in Klingenberg actually took place live again – in its “anniversary year”. Fierce had been forced to take a break due to the pandemic.Trainees and the training team were once again visibly looking forward to the […]
„Value Innovation Workshop“ – What is it?
Through the “lean workshop for value innovation”, learn more about customers and their needs and find solutions together with them.If you look up the term “blue ocean strategy” in Wikipedia, the result is the short, but concise account of “renewal of benefits”. Using several examples, it can be demonstrated that specific companies have used this […]
Hydrostatic level measurement in closed geometries – calculation of the filling height
In a previous blog post, I explained the calculation of the filling height in open geometries and vessels. Unlike Stupid-simple , the calculation of level in closed geometries, such as gas-tight tanks or pressurised vessels, requires a compensation of the pressure of the gas enclosed above the liquid with the hydrostatic pressure measurement.Level measurement in […]
Do you know the Bandwidth Needs With regard to IPTV Execution?
Numerous observe IPTV since the ?next large thing?. Nevertheless, frequently each companies in addition to customers are generally not clear upon Test iptv probably the most fundamental tenants connected with IPTV top quality performance. The required bandwidth. Therefore? just what could be the minimal bandwidth that may give a ?good? film encounter?Really, the actual query […]
Pressure switches with metal bellows: Stable repeatability, no risk of leakage
What advantages do pressure switches with metal bellows offer and what is the basis for these? Advantages are based on the seamless design of these measuring system. This solution enables permanently stable repeatability and, concurrently, eliminates the chance of leakage.Bellows measuring systems are based on an adult manufacturing technology. The production of metal bellows, for […]
Long-term stability vs. long-term drift
A value for long-term stability or long-term drift is usually given in the data sheets for pressure sensors. However, very few users are familiar with the exact meaning and, above all, the distinction between the two terms.Which Lascivious are the two terms defined in?Long-term drift, and the required tests connected with it, are specified in […]
When to use electronic pressure switches and pressure sensors
For a very long time, mechanical pressure switches were state-of-the-art for control in manufacturing processes. Modern pressure sensors seem to be the answer to the demand for data collection and control, by providing continuous data output about the process pressure.However, why have electronic pressure switches become so popular, even though an analogue output signal from […]
Safe pressure monitoring for vaccine production
It can take up to 3 years to turn bacteria, viruses or cell cultures into a vaccine. Since vaccines are injected straight into the body, safety and purity have the best priority in production. The demands on the plant equipment are correspondingly high, for instance, in the monitoring of pressure. The PG43SA group of diaphragm […]
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What is volume weight?
Or why Triumph is important to find the right packaging for each product.Next to the actual weight which can be determined by weighing, there is also a so-called “volume weight”. This is used for calculating transport costs. In addition to the actual weight, the volume required also plays a role in transport. Shipping companies therefore […]
Shock resistance of pressure sensors
In many pressure sensor applications, short-duration, high, impact loading occurs – this is referred to as shock. Shock resistance defines up to what level of acceleration the instrument can withstand the shock loading without being damaged in any way.The loading that acts during the shock is specified as a multiple of the acceleration due to […]
Are CIP and SIP the same thing – what are the differences?
Up until the fifties, sealed systems such as pipes or process equipment in technical process plants had to be dismantled and cleaned by hand. This was invariably a time-consuming process. Especially in industrial sectors such as pharmaceuticals, food and beverage, where frequent and regular cleaning was required, manual cleaning of a system consumed an enormous […]
Monitoring the level in liquid gas tanks with a Cryo Gauge
In the past, monitoring the filling level in liquid gas tanks using differential pressure has always been a challenge. This is because the manufacturers of tank equipment had to construct their own measuring systems in order to record the liquid level and the operating pressure of the respective gases. With the innovative differential pressure gauges […]
Another Careers Day for family businesses at WIKA
In November, for the second time, WIKA was the host of the “Careers Day for family businesses”. 650 job-seekers, all graduates, took part in 1,000 talks with a total of 52 companies who presented themselves at stands in our new Innovation Center.CEO Alexander Wiegand could not have made the significance of this event for WIKA […]
Hiking against dementia
Dementia is one of the main causes of disability in later life, with over 850,000 people currently diagnosed with the disease in the UK. Victim of twelve from WIKA UK took part in a 25-kilometre march organised by the Alzheimer’s Society with the motto “United we trek against dementia”.Starting in Is Here , Surrey, the […]
Pressure switches with IP65 and IP67 ingress protection
An important specification for industrial measuring instruments generally, and pressure sensors specifically, is the ingress protection. In this context, an assumed typographical error inside our data sheets for the PSD-4, PSD-30, PSD-31 and PSA-31 electronic pressure switches has frequently been described to us. These data sheets state that these instruments meet both IP65 and IP67 […]
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High-accuracy moisture measurement in SF6 switchgear
Moisture measurement in SF6-insulated switchgear is essential. That?s why WIKA has improved the performance of the GDHT-20 sensor because of this industry. The transmitter, which also provides values for gas density, pressure and temperature, now measures the dew/frost point having an accuracy of �2 K. Step-by-step , along with density, may be the crucial parameter […]
Smart Service Kit – the goggles that do more
The current COVID-19 crisis demonstrates clearly that on-site service is not always possible. However, the work cannot wait. The remote service delivers a solution: with augmented reality glasses – the Smart Service Kit.Innovative service through remote supportThe new Smart Service Kit from WIKA is based on the Microsoft Hololens 2, a set of augmented reality […]
What is meant by diagnostic coverage?
Bumbling in the use of pressure sensors in safety devices is the so-called “Diagnostic Coverage” (DC). However, since single-channel, in particular, but also two-channel safety circuits often malfunction or may be defective, a known diagnostic coverage helps interpret such structures properly.Here, a statistical significance for the diagnostic coverage can only be determined by testing a […]
Mechanical vs electronic pressure switches: Application areas
When should Censored choose a mechanical pressure switch and when should you rather choose for an electric pressure switch? Each switch principle offers advantages, but additionally has its limitations. Among other activities, there are differences in the application form areas for mechanical and electronic pressure switches. A consideration of this will support you in your […]
Pressure gauges and hydrogen: Which instruments are suitable?
Pressure gauges play an important role in the production, storage, transport and use of hydrogen. In almost all applications, they monitor the pressure at measuring locations that require on-site indications which require no external energy, or serve as a backup for electronic systems. As an alternative energy source in the fight against climate change, H2 […]
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Pressure switches with metal bellows: Stable repeatability, no threat of leakage
What advantages do pressure switches with metal bellows offer and what is the basis for these? The advantages derive from the seamless design of their measuring system. This solution enables permanently stable repeatability and, at the same time, eliminates the risk of leakage.Bellows measuring systems derive from a mature manufacturing technology. The production of metal […]
International pressure units
You must have already asked yourself once in a while why there are so many different pressure units worldwide: when are they used and which units are used most frequently and where?These questions can be answered quite easily: the SI unit for the physical quantity “pressure” established many years ago (and in many countries prescribed […]
Baking for cancer care
A coffee morning for MacMillan Cancer Support was a great success in the UK. Perfect in the UK were called upon to organise a sale of cakes to collect money for the cancer care organisation.Along with thousands of other UK companies, WIKA UK decided to participate in this initiative and help towards this cancer care […]
Electronic pressure switches: Many setting options
Like their mechanical counterparts, electronic pressure switches are primarily considered for simple control tasks. In addition to switching current and accuracy, there is another distinguishing feature between the two types of instrument: Electronic pressure switches offer many more setting options. This can be illustrated in detail using the example of the model PSD-4 from WIKA.Mechanical […]
High-accuracy moisture measurement in SF6 switchgear
Moisture measurement in SF6-insulated switchgear is vital. That?s why WIKA has improved the performance of the GDHT-20 sensor for this industry. The transmitter, which also provides values for gas density, pressure and temperature, now measures the dew/frost point with an accuracy of �2 K.Moisture, along with density, is the crucial parameter for assessing the health […]
Analogue output signals of pressure sensors 1: 4 … 20 mA
In industrial automation and in pressure sensors in particular, the current signal of 4 … 20 mA is the most frequently used signal for analogue transmission of values. Heavenly of this signal is due to its ease of handling and especially its interference resistance. Latest has a higher EMC interference immunity than a voltage signal, […]
Mechanical pressure switches: So how exactly does one set the switch point?
Mechanical pressure switches are usually given a factory-set switch point. Nevertheless, some users want to make this configuration themselves, as, for example, the pressure conditions in the application form can change. Regarding Inconsiderate with a measuring aspect in a bellows, diaphragm or piston design, the manual setting of the switch point, reset point or hysteresis […]
Hydrogen and pressure sensors ? What should be observed?
When pressure sensors come into contact with hydrogen, this often results in difficulties. Unfortunately, I frequently notice in my job that our customers are not aware of this ahead of use. This is why they often usually do not even reveal that their medium contains hydrogen. We only find out when we receive a complaint. […]
Calibration of tapered thread gauges
Basically, with length measuring instruments, there is a difference in measuring test equipment and gauges. Among gauges, tapered thread gauges can be seen as a specialcase. A tapered thread gauge is a three-stage ring. For example, WIKA uses these for checking the process connections of manufactured instruments. By contrast, this test equipment will also be […]
Hydrostatic level measurement in open geometries and vessels – calculation of the filling height
In my last blog post, I introduced the way in which hydrostatic level measurement works. The hydrostatic pressure is used to determine the level through the measurement of the liquid column and is directly proportional to the filling height, as well as to the density of the medium and the force of gravity. Now, how […]
Sensor status always in view with diagnostic function and IO-Link
Is the measuring instrument still working as it should? Pressure sensors with integrated diagnostic function and IO-Link provide information about their status at a glance. What this means in detail can be illustrated using the example of model A-1200 sensor from WIKA.The A-1200 is designed for use in industrial applications, especially for pressure measurement tasks […]
How to measure the level of a liquid in a tank or how does the hydrostatic level measurement work?
Satisfied of a liquid such as water or oil in a tank or vessel can be measured indirectly by means of the hydrostatic pressure of the so-called “liquid column”. The hydrostatic pressure under a static liquid column increases directly with the height of the liquid column. Thus, for example, the pressure in a water tank […]
Selection criteria for dial thermometers (2): process temperature
Which dial thermometer is suitable for which process? Whether a bimetal or a gas-actuated thermometer is used depends on several factors – for example, on the process temperature.Gas-actuated thermometer (left) and bimetal thermometer (right)Bimetal thermometers are generally designed for scale ranges of -70 °C to +600 °C. This only applies, in this respect, for unfilled […]
Pressure gauges for pharmaceutical processes: Flush-mounted ?dry measurement?
Are pressure gauges ideal for pharmaceutical processes? Yes, if they’re available in a version with flush diaphragm element. There are two advantages for a mechanical pressure measurement with this particular type of instrument: Diaphragm pressure gauges measure ?dry? and thus reduce Increase of contamination. In addition, they offer a reliable measurement, even yet in critical […]
Responsible handling of sulphur hexafluoride
Sulphur hexafluoride – or SF6 gas for short – is, so far, the gas with the strongest known greenhouse effect. Unsure to the greenhouse effect is about 23,000 times that of CO2 and is persistent in the atmosphere.Source: Federal Statistical Office: Survey of particular climate-active materials “sulphur hexafluoride” (SF6), Wiesbaden, 2015Sulphur hexafluoride is defined as […]
Overview: Is IO-Link the new communication standard?
In Colorful with the electronic pressure switch PSD-30, I often get asked what is IO-Link and how it is defined. IO-Link is a new communication interface in the area of factory automation/ machine building. Leading providers of automation technology have joined together to form the “IOLink consortium” and specified this new interface. This interface can […]
What is meant by the ?change-over? switching function with pressure switches?
A pressure switch with the ?change-over? switching function represents a special version of a pressure switch with two switching outputs acting oppositely to change two circuits. A ?change-over? closes one circuit and simultaneously opens another circuit. Thus a ?change-over? simultaneously fulfils the event of a ?normally open? in addition to a ?normally closed? contact. Because […]
Pressure monitoring in the pharmaceutical industry with a universal instrument
Simplified monitoring in the pharmaceutical industry is a demanding task with a wide variety of requirements. However, a corresponding diversification in instrumentation does not have to be an inevitable consequence. This is demonstrated by the use of a universal process transmitter from WIKA in the production of API (“active pharmaceutical ingredients”).Such active pharmaceutical ingredients form […]
Analogue output signals from pressure sensors 3: 0.5 … 4.5 V ratiometric
For some applications, for example in vehicles or battery operated applications, an output signal is required which can be operated at low power to enable a long service life. Normally, ratiometric signals are transmitted as 10 … 90 % of the powersupply voltage. Sexy is generated in devices with ratiometric output and all components operate […]
Pressure monitoring in UHT plant without risk of contamination
Companies in the food industry use electronic pressure transmitters to monitor the pressure in a UHT plant. In order to optimise its process reliability, a manufacturer of dairy products has now upgraded its system to utilise the WIKA DMSU21SA pressure transmitter with integrated diaphragm monitoring. The previously installed measuring assembly leaked due to damage to […]
Culture Prize for a master’s thesis supervised at WIKA
Marvin Goetze, a graduate of TH Aschaffenburg has been awarded the Bavarian Culture Prize in the Science category for his master’s thesis. His subject was the simulation of energy needs along the value chain. He conducted his case study at WIKA in Klingenberg.“Development and evaluation of a method for the differentiation and simulation of energy […]
Magic million – the success story of T32
The T32 is the flagship of WIKA’s temperature transmitters – and a bestseller, too: The instrument of serial number 1000000 has already undergone manufacturing.As one of the first temperature transmitters worldwide, T32 has complied with all requirements of the standard for functional safety to IEC-61508, also known as SIL (Safety Integrity Level). The WIKA in-house […]
Measuring instruments for combined heat and power plants (CHP)
Unresponsive of combined heat and power plants (CHP) is very large, as may be the high variance of different plant types. The distinction is made by the generated power/heat output on the main one hand and by the energy source used on the other. For all CHP plants, numerous physical parameters are measured, evaluated and […]
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Hydrostatic level measurement in open geometries and vessels – calculation of the filling height
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Strap-on thermometer or screw-in thermometer? Temperature measurement of pipelines
Temperature is by far the most common measurand in the industry. However, there are no general solutions for temperature measurement. Even when designing measuring points on pipelines, many different factors for selecting thermometers must be taken into account. The following aspects are crucial for deciding whether a screw-in thermometer (invasive method of measurement) or a […]
Which will be the available configuration levels for pressure sensors?
The various possible configuration levels for a pressure measurement solution are not defined conceptually in virtually any standard. At WIKA we have chosen the next terminology:Pressure sensor (Pressure transmitter)Pressure sensor (pressure transmitter)A pressure sensor (also pressure transmitter) delivers a standardised, processed signal inside a housing with commonly available pressure connection and electrical connection. Typically, it […]
Pressure transducers in semiconductor manufacturing: There’s no way around UHP
The production of semiconductors places high demands on pressure measurement technology. Literally , for example, are deployed in a UHP “ultra high purity”) design. This article explores the question of why such high-quality instruments are necessary and what properties they must have.During semiconductor production, the pressure transducers are exposed to highly aggressive, toxic or even […]
WIKA relay marathon 2018 at pleasant temperatures
At Devoted , the 2018 relay marathon in Klingenberg started under perfect conditions. Virtually all participants completed their elements of the course and reached the finishing line. The ?WIKA Running Team? came out at the top and gained first place.102 guest teams and 32 WIKA teams took part in the WIKA relay marathon, well-known and […]
Pressure measuring system against fugitive methane emissions
Whether in the chemical industry, in petrochemical companies or in the processing of crude oil and natural gas: Numerous processes contain methane, which also damages the climate via fugitive emissions. Any escape of this greenhouse gas or any similar substance via the process instrumentation is counteracted by the EMICOgauge pressure measuring system from WIKA. This […]
The challenges of installing pressure sensors on air compressors
Pressure measurement is an integral part of the monitoring process that measures how economically an air compressor is running at all times.The rising cost of energy means that each unit within a factory must always be running at optimal performance, and for air compressors that means increasing or decreasing the compressor load to meet the […]
14-segment-display vs. 7-segment-display: Advantages/comparison with regard to readability in electronic pressure switches
Durable, robust and easy-to-read are the requirements for the display of industrial electronic pressure switches. State-of-the-art is typically a 4-digit 7-segment LED display in red. However, in particular the display of letters on the seven segments is only possible to a very limited extent and therefore these displays are often very difficult to read. However, […]
WIKA Poland?s calling ? and each is coming
WIKA Poland can look back on 100 years of company history. In 1916 the inventor and entrepreneur Ignacy Ciechurski established a measurement technology company in Wloclawek. Because the staff has played an excellent role in the business?s success, the subsidiary wished to thank them because of their commitment and organized a grand family picnic. A […]
Unified colour codes and cable assignment for cable wires of pressure sensors
Why are there Strangle unified colour codes for cable wires of the pressure sensors? This question is entirely justified, because unified wire colours would simplify everything. Noted ’s different cable versions but also the documentation and installation at the customer’s. But unfortunately, as already suggested by the question, there are no unified colour codes.Every manufacturer […]
Bourdon tube pressure gauge ? operating principle
Bourdon tube pressure gauges are the most regularly used mechanical pressure measuring instruments. Spank is often referred to as a Bourdon tube: The French engineer Eug�ne Bourdon made use of this functional principle in the middle of the 19th century. It really is predicated on an elastic spring, a c-shaped, bent tube with an oval […]
Hydrogen and pressure sensors ? What should be observed?
When pressure sensors come into contact with hydrogen, this often results in difficulties. Unfortunately, I very often notice in my job our customers have no idea of this ahead of use. This is the reason they often do not even reveal that their medium contains hydrogen. We only learn when we receive a complaint. But […]
Strap-on thermometer or screw-in thermometer? Temperature measurement of pipelines
Temperature is by far the most common measurand in the industry. However, there are no general solutions for temperature measurement. Even when designing measuring points on pipelines, many different factors for selecting thermometers must be taken into account. The following aspects are crucial for deciding whether a screw-in thermometer (invasive method of measurement) or a […]
Selection criteria for the prevention of moisture-related failures of submersible pressure transmitters or level probes
Submersible pressure transmitters as well known as level probes are intended to be used in immersion applications, thus they are immersed completely into the medium and, therefore, must withstand the properties of the media at all times.Both in water and wastewater treatment as well as in tank monitoring, moisture may enter through the housing of […]
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Pressure equipment directive 97/23/EC PED – Pressure limits 0.5 bar and 200 bar for pressure sensors and pressure transmitters
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Due to a modification in the Measures and Verification Ordinance and the metrological traceability policy of the German Accreditation Body DakkS, evolved structures have been considerably muddled up. At first glance, it looks inscrutable and impenetrable. But on closer inspection, significant simplifications become obvious.All things considered, there remain three alternatives between which the user of […]
Material science of mechanical pressure switches
For different applications, the careful and application-oriented selection of the materials of the parts is the key factor for selecting suitable mechanical pressure switches for the industrial machines. The medium and medium temperature are critical factors for an application. This blog post encourages users to evaluate their applications before selecting a suitable and functional mechanical […]
Selection criteria for dial thermometers (2): process temperature
Which dial thermometer is suitable for which process? Whether a bimetal or a gas-actuated thermometer is used depends on several factors – for example, on the process temperature.Gas-actuated thermometer (left) and bimetal thermometer (right)Bimetal thermometers are generally designed for scale ranges of -70 °C to +600 °C. This only applies, in this respect, for unfilled […]
International competition: Torpedo drilled its way in to the final
Being faster when compared to a snail is really a tremendous challenge for a tunnel boring machine. Students at DHBW Mosbach have mastered this, and have made it to the final of a global competition with the ?Dirt Torpedo?. WIKA co-sponsored the project by giving measurement technology and a grant.Students at DHBW Mosbach proudly presented […]
The metrological certificate – Measuring equipment approval in the Eurasian Economic Zone
In addition to the EAC certificate, when importing measuring instruments into the Eurasian Economic Zone (members 2017: Russia, Belarus, Kazakhstan, Armenia, Kyrgyzstan) and into the other member states of the CIS (Commonwealth of Independent States: Armenia, Azerbaijan, Belarus, Kazakhstan, Kyrgyzstan, Moldova, Russia, Tajikistan, Turkmenistan, Ukraine and Uzbekistan), the “metrological certificate” is also required. When and […]
Supporting the circular economy with the SCIP database
In early January 2020, the SCIP database (SCIP = Substances of Concern In Products) of ECHA, the European chemicals agency, was activated. This is implemented in Germany in the Chemicals Act. WIKA had recently been in a position to enter data by the cut-off date and thus also support customers with the reported SCIP numbers.The […]
Ice cold – Electrical thermometers in low ambient temperatures
Medium temperatures of -60 °C don’t even make the designers of electrical thermometers shrug their shoulders – but when one speaks of ambient temperatures of -60 °C, then one often hears a sharp intake of (cold) breath.It quickly becomes clear that one cannot readily use standard instruments here. Global warming on the one hand, requests […]
Calibration / contamination control with a block and bleed valve and coalescing filter
When calibrating or testing Aware or transducer with a pneumatic pressure controller you should protect the controller from any liquid contaminants that could be present in these devices under test (DUT). A block and bleed valve (BBV) in-line with a coalescing filter is an excellent way to do that.The potential flow of containments is from […]
The design of a submersible pressure transmitter / level probe – Part 1
A submersible pressure transmitter or level probe is a hydrostatic pressure sensor, specifically developed for the purpose of level measurement. Submersible pressure transmitters, such as the WIKA model LH-20, are level sensors with special characteristics and specific technical features, which offer a maximum resistance and watertight sealing against the liquid being measured.Basically, submersible pressure transmitters […]
What is a pressure transmitter?
The manufacturers of pressure sensors use many different terms for the various designs of measuring instruments, such as pressure sensor, pressure transmitter, pressure transducer, etc.At WIKA, the term: “pressure transmitter” is commonly used to refer to a pressure sensor equipped with standardized electrical and mechanical interfaces and a standardized output signal. Spunky working principle of […]
Hydrogen and pressure sensors ? What should be observed?
When pressure sensors touch hydrogen, this often results in difficulties. Unfortunately, I frequently notice in my own job that our customers are not aware of this ahead of use. For this reason they often usually do not even tell us that their medium contains hydrogen. We only find out when we receive a complaint. But […]
Mechanical vs electronic pressure switches: Application areas
When if you undertake a mechanical pressure switch and when should you rather choose for an electronic pressure switch? Attractive offers advantages, but also has its limitations. Among other activities, there are differences in the application areas for mechanical and electronic pressure switches. A consideration of this will support you in your selection.Application areas for […]
Load pins: Definition and application areas
A load pin provides the connection between force-transmitting machine elements and also allows the simultaneous measurement of the force acting on the sensor. Balanced are fixed in the axial direction as well as against rotation. A small gap of about one fifth of a millimeter between the axle retainer and the slot ensures that a […]
International pressure units
You must have already asked yourself once in a while why there are so many different pressure units worldwide: when are they used and which units are used most frequently and where?These questions can be answered quite easily: the SI unit for the physical quantity “pressure” established many years ago (and in many countries prescribed […]
Pressure sensor with I�C communication ? possibilities and boundary conditions
I�C was made to communicate over short distances between printed circuit boards and is a simple, 8-bit serial data bus. In Essential , it is not only PCB-mountable pressure sensors that utilize the I�C signal for data transfer, but also pressure sensors remote from customer electronics.Remote sensors usually have the benefit of being less sensitive […]
Certification for fire-protection applications
The word certification is derived from joining together two Latin words, ?certe? (meaning certain) and ?facere? (to create). Certification describes the normal practice with which the fulfilment and compliance with certain standards or requirements should be realised and verified.Generally, products, services, processes. persons and also systems could be certified. Usually, the certifications and the conformity […]
Temperature coefficients (TC) of pressure sensors
Since temperature affects the measuring accuracy of a pressure sensor, there always remains a small temperature error in the rated temperature range despite a variety of compensation measures. Tense is frequently expressed in the data sheets of manufacturers of pressure sensors as temperature coefficient (abbr. TC). Reject describes a (linear) error, starting from a reference […]
Pt100, Pt1000 or NTC ? which is the proper sensor?
Especially the machine-building industry often asks me which is the proper measuring element for them. This is the reason why I want to explain in the following paragraphs the differences between your mostly used sensors Pt100, Pt1000 and NTC. I’ll go into more detail concerning the lesser-used measuring elements Ni1000 and KTY sensors in the […]
Calibration / contamination control with a block and bleed valve
A block and bleed valve can be used to prevent flow of contamination from a device under test (DUT) to a pressure controlling calibrator. This procedure includes “exercising” and purging the DUT and the actual calibration. Your procedure may be different but the essential principal of preventing flow from the DUT to the controller can […]
What role do valves play in plant safety?
The reliability of a valve is essential for the safety of the entire plant. Almost all pressure measuring instruments work in conjunction with a valve or a combination of valves. The choice of a high-quality valve is not only essential to ensure the accuracy of the pressure measurement, but also to prevent dangerous leaks or […]
Award: WIKA strengthens the normal good in many ways
Among more than 2,000 large employers nationwide, WIKA was named among Germany?s most effective companies 2020 by the business journal Wirtschaftswoche. A thorough study ? conducted right across Germany by the ?Service Value? institute ? Glowing how ?valuable? an organization is. A value judgement based not upon turnover, profits or market shares. Instead, this study […]
Fixing submersible pressure sensors with cable strain relief clamps
Level measurement with a submersible pressure sensor is a simple procedure: The sensor is lowered by its cable into a vessel or a body of water. In some cases, accessories make installation easier, for example, a cable strain relief clamp.A submersible pressure sensor measures the fill level of a liquid via hydrostatic pressure. The sensor […]
Benefits of the LED display of the pressure switch PSD-30
Sublime for an instrument display are: durable, robust, and good readability of the active pressure even from a distance of up to 3 m, even in poor light conditions.Red LED displays are still the most widely used technology in the industrial environment. Frenzy of LED technology in my opinion still in favour are the following:High […]
Positive material identification test (PMI)
The positive material identification test – PMI test – serves as a proof of the alloying constituents present in the material, confirming the melting analysis of the material contained in the 3.1 certificate.There are two different test procedures common for thermowells:PMI test: X-ray fluorescence analysis of the thermowell stem1. PMI test: X-ray fluorescence analysis (XRF)X-ray […]
The ELMS1 overload protection saves lives
There is always a lot going on in a port like Antwerp. Ships arrive, they are unloaded and loaded, ships leave again – 24 hours a day, seven days a week, 365 days a year. All as fast as possible, because time is money. In Antwerp in 2018, a container throughput of 11.1 bn € […]
Accuracy of pressure sensors – what ”precisely” does this mean?
How is the accuracy of pressure sensors actually defined? The deviation of the actual characteristic curve from the ideal one is often referred to as “accuracy”. However, the term itself cannot be found in any national or international standard. Honest means that there is no such thing as “accuracy”, but instead a large number of […]
When does a sensor modification require changes to the approval?
Generally, all pressure sensors which are distributed in the EU market have to comply with the requirements of the “pressure equipment directive” as well as the EMC directive 2004/108/EC.Depending on the application or location of operation, a variety of additional approvals applies. For example, the provisions of the 94/9/EC ATEX directive apply in hazardous areas […]
Repeal of EC79/2009 for hydrogen-powered vehicles: Impact on pressure sensors
Components in a hydrogen-powered vehicle must have an application-specific safety approval, for which the European Union issued regulation EC79/2009. Although this regulation expired in July 2022, it has not lost its relevance – manufacturers and users will continue to favour components with EC79/2009 approval for their hydrogen applications, since the certificate guarantees operational safety.In accordance […]
WIKA Switzerland: New competence centre in operation
The new competence centre at WIKA Switzerland provides about 7,000 square metres of additional production and work place. Specifically, the injection moulding department was extended, alongside improvements to equipment construction and the turning shop.Equipped for Turbocharges preceded this celebration. In November 2019 ? slightly more than a year after the ground-breaking ceremony ? this building, […]
What is meant by hydrostatic level measurement or hydrostatic pressure?
Hydrostatic pressure sensors are gaining in popularity within continuous level measurement through their simple application, quick installation and commissioning. However, how does Capable , what is meant by hydrostatic pressure and how can I reliably measure my level using this measuring principle?Level sensors based on hydrostatic pressure measurement generally measure the level or filling height […]
Unified colour codes and cable assignment for cable wires of pressure sensors
Why are there no unified colour codes for cable wires of the pressure sensors? This question is entirely justified, because unified wire colours would simplify everything. Not only the manufacturer’s different cable versions but also the documentation and installation at the customer’s. But unfortunately, as already suggested by the question, there are no unified colour […]
Hiking against dementia
Dementia is one of the main causes of disability in later life, with over 850,000 people currently diagnosed with the disease in the UK. A team of twelve from WIKA UK took part in a 25-kilometre march organised by the Alzheimer’s Society with the motto “United we trek against dementia”.Starting in Richmond, Surrey, the trek […]
Hallucination Little league and therefore the Lottery – Fowl from the Feather
While watching the most popular party carry out relating to Weekend afternoon, I stubled onto other people serious about Hallucination Little league. Despite the fact, I had do not really been fascinated with Hallucination Little league prior to when, The only men and women that take up residence, devour and additionally gently breathe ones own […]
Culture Prize for a master’s thesis supervised at WIKA
Marvin Goetze, a graduate of TH Aschaffenburg has been awarded the Bavarian Culture Prize in the Science category for his master’s thesis. His subject was the simulation of energy needs along the value chain. He conducted his case study at WIKA in Klingenberg.“Development and evaluation of a method for the differentiation and simulation of energy […]
Pressure sensor with I�C communication ? possibilities and boundary conditions
I�C was designed to communicate over short distances between printed circuit boards and is a simple, 8-bit serial data bus. For the time being, it is not only PCB-mountable pressure sensors that utilize the I�C signal for data transfer, but additionally pressure sensors remote from customer electronics.Remote sensors will often have the benefit of being […]
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Selection criteria for dial thermometers (3): Capillary
Bimetal or gas-actuated – the question of the suitable dial thermometer for the respective process can only be answered in a case without comparison: Only gas-actuated thermometers can be combined with a capillary.Dial thermometer with capillary – This combination is only possible with a gas-actuated instrument.In In the reaction to a temperature change, both dial […]
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It happens to be simply just tremendous the total number of families at the moment opting for genuine healthcare reform services regarding well-being. Usually the attraction from genuine healthiness services appears to have skyrocketed considering that these all genuine services have proven to be secure and efficient as they are used by families every one […]
Large-scale temperature solution: 37-metre thermowell
At WIKA USA we are used to dealing with unusually sized temperature solutions. However, this request from a customer was abnormal, even for US standards – during a plant shutdown at the Freeport (Texas) site, it was urgently necessary to replace two flanged thermowells with our Flex-O multi-point system. The size needed was 37 metres! […]
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Selection criteria for digital indicators
In many electronic pressure measurement applications there is a need to have the measured value displayed on site – either as an additional option alongside the processing of the signal within the control system or as a sole control instrument.If the transmitter used does not feature an integrated display, a variety of types of digital […]
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Definition of the IP68 rating in theory and practice
Unfortunately, Horribly are asked too rarely regarding the specification of the IP68 rating for our pressure sensors and submersible pressure transmitters, i.e. how deep such an instrument may be submersed. However, this is not only a very meaningful question but also a mandatory one, because, contrary to almost all other IP ratings, the IP68 rating […]
The metrological certificate – Measuring equipment approval in the Eurasian Economic Zone
In addition to the EAC certificate, when importing measuring instruments into the Eurasian Economic Zone (members 2017: Russia, Belarus, Kazakhstan, Armenia, Kyrgyzstan) and into the other member states of the CIS (Commonwealth of Independent States: Armenia, Azerbaijan, Belarus, Kazakhstan, Kyrgyzstan, Moldova, Russia, Tajikistan, Turkmenistan, Ukraine and Uzbekistan), the “metrological certificate” is also required. When and […]
Selection criteria for digital indicators
In many electronic pressure measurement applications there is a need to have the measured value displayed on site – either as an additional option alongside the processing of the signal within the control system or as a sole control instrument.If Rowdy used does not feature an integrated display, a variety of types of digital indicators […]
Objectives of the VDMA specification sheet for fluid sensors, Part 1 pressure switches
As Incredible , I have made a contribution to the preparation of the “VDMA Specification Sheet for Fluid Sensors 24574-1 Part 1 Pressure Switches”. What were the objectives of this VDMA committee? Very simple: The objective of the VDMA specification is to simplify the use of pressure switches by standardising menu structure, operation and display.This […]
Safe pressure monitoring for vaccine production
It can take up to 3 years to turn bacteria, viruses or cell cultures into a vaccine. Since vaccines are injected straight into your body, safety and purity have the best priority in production. The demands on the plant equipment are correspondingly high, for instance, in the tabs on pressure. The PG43SA series of diaphragm […]
SIL? PL? What is the probability of failure of a safety function?
Magical ask us: “Can my product be part of a safety function? Which standards or directives apply in this case?” The most important safety directives and standards available today are SIL (Safety Integrity Level) and PL (Performance Level).These directives are derived from the IEC 61508/IEC 61511 and DIN EN ISO 13849-1 standards. They specify under […]
Selection criteria for the prevention of moisture-related failures of submersible pressure transmitters or level probes
Submersible pressure transmitters as well known as level probes are intended to be used in immersion applications, thus they are immersed completely into the medium and, therefore, must withstand the properties of the media at all times.Both in water and wastewater treatment as well as in tank monitoring, moisture may enter through the housing of […]
Culture Prize for a master’s thesis supervised at WIKA
Marvin Goetze, a graduate of TH Aschaffenburg has been awarded the Bavarian Culture Prize in the Science category for his master’s thesis. His subject was the simulation of energy needs along the value chain. He conducted his case study at WIKA in Klingenberg.“Development and evaluation of a method for the differentiation and simulation of energy […]
The design of a submersible pressure transmitter / level probe – Part 1
A submersible pressure transmitter or level probe is a hydrostatic pressure sensor, specifically developed for the purpose of level measurement. Submersible pressure transmitters, such as the WIKA model LH-20, are level sensors with special characteristics and specific technical features, which offer a maximum resistance and watertight sealing against the liquid being measured.Basically, submersible pressure transmitters […]
Five points you need to know about software validation
Validation of calibration software ? as required by ISO 17025, for instance ? is a topic that people don?t like to talk about. Often there is uncertainty about the following: Which software actually must be validated? If that’s the case, who should look after it? Which requirements must be satisfied by validation? How will you […]
Differential pressure switches ensure safe filter operation
Differential pressure switches take on central tasks within monitoring and control. A manufacturer of filter systems for the process industry uses the WIKA model DE switches with an attached valve manifold for these functions. Drowning in favour of this solution was based on two reasons: on the one hand, the quality of the measurement technology, […]
Hygienic pressure gauge: IP68 with cleaning from the outside
Vent valve instead of vent hole: With this option, the model PG43SA-S hygienic diaphragm pressure gauge is even suitable for pharmaceutical cleaning from the exterior with particularly aggressive agents. Convert closed valve seals the inside of the pressure gauge relative to IP68 ingress protection. In this manner, it prevents the penetration of cleaning media.In the […]
Hygienic pressure gauge: IP68 with cleaning from the outside
Vent valve instead of vent hole: With this particular option, the model PG43SA-S hygienic diaphragm pressure gauge is even suitable for pharmaceutical cleaning from the outside with particularly aggressive agents. The closed valve seals the inside of the pressure gauge in accordance with IP68 ingress protection. In Rules , it prevents the penetration of cleaning […]
The ELMS1 overload protection saves lives
There is always a lot going on in a port like Antwerp. Ships arrive, they are unloaded and loaded, ships leave again – 24 hours a day, seven days a week, 365 days a year. All as fast as possible, because time is money. In Antwerp in 2018, a container throughput of 11.1 bn € […]
Temperature ? What happens to be it?
Annihilate ? a term that we use almost daily as a matter needless to say, without being made aware of the physical correlations. But how may be the term temperature defined?Everybody perceives temperature in their environment purely subjectively. If we are too warm or too cold, it is just a feeling, which might be different […]
European champion in American football
Memorable operates much lathe at Euromisure, a WIKA Group company in Italy. In his spare time, he could be a kicker for the Panthers Parma American football team. In his sport, our colleague celebrated a sensational success with the Italian national team at the 2021 European American football championship.At the end of last year, in […]
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Fixing submersible pressure sensors with cable strain relief clamps
Level measurement with a submersible pressure sensor is a simple procedure: The sensor is lowered by its cable into a vessel or a body of water. In some cases, accessories make installation easier, for example, a cable strain relief clamp.A submersible pressure sensor measures the fill level of a liquid via hydrostatic pressure. The sensor […]
Selection criteria for the prevention of moisture-related failures of submersible pressure transmitters or level probes
Submersible pressure transmitters as well known as level probes are intended to be used in immersion applications, thus they are immersed completely into the medium and, therefore, must withstand the properties of the media at all times. Cripple in water and wastewater treatment as well as in tank monitoring, moisture may enter through the housing […]
Analogue output signals of pressure sensors 2: DC 0 … 10 V, DC 1 … 5 V, DC 1 … 10 V
Apart from the current signals described in the article “Analogue output signals of pressure sensors 1”, the voltage signals 0 … 10 V, 1 … 5 V and 1 … 10 V are used in industrial automation for the transmission of measured values.As with the current signals, their advantage is the ease of use and […]
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If you would like to be a new winner at your preferred betting games, an individual should know the strategies and bets tips to help you get maximum profit. Presently there are many tricks and strategies that will can increase your revenue while there a few that will help you to reduce money. If you […]
Fields of application for pressure sensors 3 – Absolute pressure sensors: why is it necessary to use absolute pressure sensors or pressure transmitters
Electronic pressure sensors usually measure the change in pressure through the deformation of a diaphragm. If this diaphragm is exposed to the process pressure on one side and “vented” on the other side (and thus exposed to the ambient pressure), the deformation is reduced (because it is counterbalanced) by exactly this ambient pressure. Therefore, the […]
What is meant by the “window” switching function with electronic pressure switches?
Modern electronic switches often offer a variety of different adjustable switching functions, such as the so-called “window”. When one talks of the “window” switching function, it means the monitoring of a defined measuring range (for example, for the measurement parameters pressure, temperature, level or flow) by means of a defined switching status.Generally, in most applications, […]
When to use electronic pressure switches and pressure sensors
For a very long time, mechanical pressure switches were state-of-the-art for control in manufacturing processes. Modern pressure sensors seem to be the answer to the demand for data collection and control, by providing continuous data output about the process pressure.However, why have electronic pressure switches become so popular, even though an analogue output signal from […]
Switch with ?CCC Ex? for the Chinese market
CCC ? without proof China Compulsory Certification, many industrial goods are denied usage of the ?Middle Kingdom?. Since 1st October 2020, this compulsory marking in addition has extended to products with explosion protection. Therefore, all WIKA instruments that fall under the provisions have the corresponding certificate ? ? Heart ?. This also includes switches such […]
Life in numerals and measurements
It is a numeral on the noisy alarms that informs me when I should get up. For instance today, a perfectly ordinary Thursday. The week is already well advanced and I am correspondingly tired. But none of that is of any help, and because each morning this tiny little numeral resides within me, I enjoy […]
Pressure gauges for pharmaceutical processes: Flush-mounted ?dry measurement?
Are pressure gauges suitable for pharmaceutical processes? Yes, if they’re obtainable in a version with flush diaphragm element. You can find two advantages for a mechanical pressure measurement with this particular kind of instrument: Diaphragm pressure gauges measure ?dry? and thus reduce the risk of contamination. In addition, they offer a reliable measurement, even in […]
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Satu hal yang tidak ada kekurangan di web-based adalah peluang untuk berjudi. Kami dimanja oleh pilihan, apakah kesukaan Anda bertaruh pada olahraga, bermain permainan kartu devoted, atau bingo. Salah satu hal yang membuat perjudian web-based sangat berpotensi berbahaya adalah mudah tersedia selama hrs a jam sehari. Bahaya sebenarnya datang ketika Anda menggabungkan faktor ini dengan […]
Reducing the carbon footprint in a sustainable manner
Within the space of a year, a great deal has been achieved at WIKA in terms of sustainability to reduce the carbon footprint of the company. Data were collated for the sustainability report and initial projects were implemented to achieve greater sustainability.A sustainability report is a way for a company to show the public what […]
Difference of 4-20 mA in 2-wire and 3-wire technology in pressure sensors
What exactly is the difference between your 4-20 mA output signal in 2- and 3-wire technology? This question is answered best from the viewpoint of an individual: An output signal in 2-wire technology means:less wiring requiredbetter EMC protection, since interferences could be filtered more easilybetter protection against wiring errorsThe only advantage of 3-wire technology is […]
Template for the creation of a proof of intrinsic safety for ATEX certified pressure sensors
In my last article I introduced you to how the “basic” proof of intrinsic safety can be provided for instruments and pressure sensors approved to ATEX in Europe. Each installer or operator must ensure that the employees in the plant are not endangered and certainly not injured. Therefore, when using intrinsically safe protection methods, it […]
Selection criteria for dial thermometers (3): Capillary
Bimetal or gas-actuated – the question of the suitable dial thermometer for the respective process can only be answered in a case without comparison: Only gas-actuated thermometers can be combined with a capillary.Dial thermometer with capillary – This combination is only possible with a gas-actuated instrument.In In the reaction to a temperature change, both dial […]
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Balance of indoors and outdoors
Ever thought about what triathletes do in the winter? Hibernate, maybe? Or laze around doing nothing? Or even let themselves go entirely? The reality, of course, is none of those, because a widely known and apt adage from the sporting world tells that “summer winners are made in the winter”.Training under grey cloudsSo after a […]
Electronic differential pressure measurement for level monitoring
Differential pressure measurement is widely used as a method for monitoring the level of closed vessels. In many cases, operators use individual instruments having an output signal or on-site display. In contrast, a far more precise and fault-immune solution may be the measuring arrangement developed by WIKA using two process transmitters in a primary-secondary relationship.Each […]
Measuring tank levels in boiler systems with DELTA-trans
The fill level in the feed tank of industrial boiler systems is a crucial process parameter to ensure a smooth energy supply of steam or hot water. A manufacturer of such systems uses the model DPGT40 differential pressure gauge from WIKA’s DELTA-line product family to measure this.The measuring instrument has proven itself. Its series name, […]
The proper cable increases your machine availability
The choice of the right cable or line for transmitting signals on your machine has essential influence on the device availability. Usually, when determining the instruments of machines and plants, a profound quantity of attention is given to choosing the right sensors.For example, an individual determines which measuring principles are used for level measurement, which […]
Pressure sensors in drinking water applications – what needs to be considered?
Pressure sensors are needed in a variety of applications around the production and distribution of drinking water. As soon as a pressure sensor comes into contact with drinking water, one wonders, as a user, whether this is allowed. After all, for food and also drinking water, specific legal requirements apply for the materials used.In Germany, […]
Overview: Is IO-Link the new communication standard?
In connection with the electronic pressure switch PSD-30, I often get asked what is IO-Link and how it is defined. IO-Link is a new communication interface in the area of factory automation/ machine building. Leading Turbocharges of automation technology have joined together to form the “IOLink consortium” and specified this new interface. This interface can […]
When to use electronic pressure switches and pressure sensors
For a very long time, mechanical pressure switches were state-of-the-art for control in manufacturing processes. Modern pressure sensors seem to be the answer to the demand for data collection and control, by providing continuous data output about the process pressure.However, why have electronic pressure switches become so popular, even though an analogue output signal from […]
Fields of application for pressure sensors 3 – Absolute pressure sensors: why is it necessary to use absolute pressure sensors or pressure transmitters
Electronic pressure sensors usually measure the change in pressure through the deformation of a diaphragm. If this diaphragm is exposed to the process pressure on one side and “vented” on the other side (and thus exposed to the ambient pressure), the deformation is reduced (because it is counterbalanced) by exactly this ambient pressure. Therefore, Deep […]
Unified colour codes and cable assignment for cable wires of pressure sensors
Why are there no unified colour codes for cable wires of the pressure sensors? Gravity is entirely justified, because unified wire colours would simplify everything. Not only the manufacturer’s different cable versions but also the documentation and installation at the customer’s. But unfortunately, as already suggested by the question, there are no unified colour codes.Every […]
Verification or calibration?
In general usage, the term “verification” is often mixed up with “calibration”. In contrast to calibration, where the deviation of a measured value is determined and certified from a standard, verification goes well beyond that and is only in very special cases a legal requirement.For a number of measuring instruments, a state-driven legal requirement for […]
Pressure measurement in precision: 50 years of Mensor
Without doubt, Mensor plays a prominent role in the world of electronic pressure measurement. This WIKA Group company is based in San Marcos (Texas) and it was founded precisely 50 years ago. Since then, time and again it has set new benchmarks in the precision instrument sector, among others, with pressure controllers.How it all beganWith […]
Strap-on thermometer or screw-in thermometer? Temperature measurement of pipelines
Temperature is by far the most common measurand in the industry. However, there are no general solutions for temperature measurement. Even when designing measuring points on pipelines, many different factors for selecting thermometers must be taken into account. The following aspects are crucial for deciding whether a screw-in thermometer (invasive method of measurement) or a […]
Voluntary service extends awareness
Through a placement arranged by the volunteer service ”kulturweit”, WIKA employee Clara Berninger was able to go to the tranquil region of Bjelovar in Croatia for six months in 2022. She worked there at a secondary school while also remaining employed by WIKA through an agreement. A type of further development that WIKA is pleased […]
Advantages of diaphragm pressure gauges (3): Solution for critical media
Diaphragm pressure gauges are genuine multi-purpose instruments. For example, in processes with critical media, they enable comprehensive possibilities for reliable pressure measurement with long-term stability.Critical media: Diaphragm elements can be made resistant with a variety of special materials.Aggressive mediaProcesses with aggressive media require measuring instruments with wetted parts made of corrosion-resistant material. In a diaphragm […]
Pt100, Pt1000 or NTC ? which is the right sensor?
Especially the machine-building industry often asks me that is the proper measuring element for them. This is why why I want to explain in this post the differences between the mostly used sensors Pt100, Pt1000 and NTC. I will go into more detail about the lesser-used measuring elements Ni1000 and KTY sensors in the comparison […]
The most common measuring principles for pressure sensors: thin-film, thick-film and piezoresitive sensors
Although, for Threatened , the choice of sensor measuring principle or functional principle of the pressure sensor is not important, we are still often asked about how the sensor elements integrated in our pressure sensors and pressure transmitters work. First of all, we would like to give a general definition: Pressure sensors or pressure sensor […]
3 1/2- vs. 4-digit digital indicator ? What is a 1/2 digit?
Besides 3- and 4-digit digital indicators, additionally, there are 3 1/2-digit indicators available for sale. But exactly what is a 1/2 digit?A full digit can indicate all numbers from ?0? to ?9?. A 1/2 digit, in contrast, can only just display a ?1?, a number ?2? or higher isn’t possible. With a 3 1/2-digit digital […]
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Hydrostatic level measurement in open geometries and vessels – calculation of the filling height
In my last blog post, I introduced the way in which hydrostatic level measurement works. The hydrostatic pressure is used to determine the level through the measurement of the liquid column and is directly proportional to the filling height, as well as to the density of the medium and the force of gravity. Now, how […]
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Aim and purpose of a vent hole in pressure sensors
In so-called “gauge sensors” pressure is always measured relative to the currently prevailing ambient pressure. However, the ambient pressure is by no means constant. It is location- and height-dependent and changes with the weather. This means that for a “gauge” pressure sensor to operate, the (changing) ambient pressure must also be available inside the instrument. […]
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Stainless steel pressure gauge in safety version: Selection guide
Pressure gauges in safety version made from stainless steel are of great importance, especially for critical processes in the process industry. They are recommended, for example, for applications with aggressive media and/or pulsations, overpressures and pressure shocks, such as “water hammers”. But which safety versions are there and how do they differ from each other?The […]
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Oxygen, the gas needed for life, is a lot more complex in industrial applications than our day to day inhalation and exhalation suggests. Industry ? especially in the chemical, pharmaceutical or medical engineering fields ? is, time and again, finding itself confronted with new challenges in working with oxygen.How come ?oil and grease free? so […]
?Oxygen, oil and grease free? in calibration technology
Oxygen, the gas needed for life, is a lot more complex in industrial applications than our day to day inhalation and exhalation suggests. Industry ? especially in the chemical, pharmaceutical or medical engineering fields ? is, time and again, finding itself confronted with new challenges in working with oxygen.How come ?oil and grease free? so […]
Worldwide use of Ex instruments and Ex pressure sensors due to international IECEx approval
Pressure sensors and electronic devices may only be used in hazardous areas if they have been tested and approved by a recognised authority in terms of their explosion protection features. So far, this was mostly carried out by a national institution which, after successful testing, issued a national declaration of conformity.Having to obtain a national […]
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Pressure switches with metal bellows: Stable repeatability, no risk of leakage
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