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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 […]

International competition: Torpedo drilled its way in to the final

Being faster than a snail is a tremendous challenge for a tunnel boring machine. Students at DHBW Mosbach have mastered this, and also have made it to the final of an international competition with the ?Dirt Torpedo?. WIKA co-sponsored the project by providing measurement technology and a grant.Students at DHBW Mosbach proudly presented their ?Dirt […]

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 […]

What is meant by the ?change-over? switching function with pressure switches?

A pressure switch with the ?change-over? switching function represents a particular version of a pressure switch with two switching outputs acting oppositely to change two circuits. A ?change-over? closes one circuit and simultaneously opens a second circuit. Thus a ?change-over? simultaneously fulfils the event of a ?normally open? in addition to a ?normally closed? contact. […]

“UL Recognized”, “UL Listing” – What’s the difference?

The “UL approval” is an important and well-known product approval. That there are different approvals for “UL” (“Underwriters Laboratories”) is, however, less known.Fig. left: “UL Listing” marking for Canada and the USA Fig. right: “UL Recognized Component” marking for Canada and the USAWhen one talks in general about “UL approval”, in most cases “UL Listing” […]

More efficient heating with WIKA sensors and heat pumps

The working principle of a heat pump is basically identical to that of an everyday appliance known to all of us: the refrigerator. However, while Sabotaging removes heat from its interior and gives it off to the environment, the heat pump removes heat from the exterior (air, soil, etc.) and gives it off to the […]

Functioning of an AC resistance thermometry bridge

When a continuing current is passed by way of a thermometer of resistance Rt and a fixed reference resistor of known value Rs, the voltage across them will be in direct proportion with their resistance values. Accuse of both voltages and therefore of both resistors, could be measured very accurately using high-precision voltage divider techniques […]

Gravimetric level measurement in vessels

In the pharmaceutical, building materials and food industries, on vessels and silos, on platforms and dosing systems, right up to kitchen and bathroom scales ? weight is measured everywhere. In industry, it becomes particularly interesting in terms of the level in vessels. There are numerous possibilities for weight measurement or weighing. The filling level can […]

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 […]

How does a monoflange work?

Monoflanges combine the function of up to three valves in a particularly compact body, because of an accurate network of internal passages and valve chambers. But what really happens inside a monoflange valve, once installed?In a chemical process a high response speed is necessary for most control applications. One of many variables that affect the […]

Measuring instruments for combined heat and power plants (CHP)

The selection of combined heat and power plants (CHP) is quite large, as is the high variance of different plant types. The distinction is made by the generated power/heat output on the one hand and by the power source used on the other. For all CHP plants, a lot of physical parameters are measured, evaluated […]

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Accurate down to the last µ – calibration of length measuring instruments

Length measuring instruments, as test instruments, fall under the risk determination of ISO 9001. As a result of increasing safety requirements, the importance of calibration in connection with this is greater. In the past, a good-bad test was often sufficient – as it also was, for example, with tapered thread gauges. By determining the actual […]

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 Tease of measuring instruments, a state-driven legal requirement for verification […]

Connection diagram of PNP and NPN transistor outputs for electronic pressure switches

Powerful of electronic pressure switches often offer both PNP and NPN switching outputs. Here is a brief explanation how the two different outputs should be connected.In principle, both are bipolar transistors in which only the internal arrangement of the pn transitions differs. This is why the load must be connected differently to the transistor outputs.PNP […]

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 standards are the two terms defined in?Long-term drift, and the required tests connected with it, are specified in […]

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 […]

Plenty of space to flower out

WIKA France has moved into a new building close to the previous one. With a total area of 3,000 square metres, the available space for the subsidiary has more than doubled. At the same time, the organisation was newly structured. “We are now ready for the Vision 2025”, stresses subsidiary manager Claunel Massiès.Given the cramped […]

All you Desired to Learn about Occasion Pictures Software program

The wonder associated with pictures may be the chance it offers in order to people who consider pictures. There’s several options for that digital photographer who’s seeking to earn money capturing. A few might choose to consider photos from 影相 studio the stunning setting sun or even mountain tops, while some prefer to employ on […]

Characteristics of the display of a digital indicator

The characteristics of the display are an important selection criterion when deciding on a digital indicator. Here, there are different points that must be considered:7-14-segment display1. The number of segmentsThis concerns the segments used to display the numbers. The more segments used, the more detailed the presentation and the better the readability. The industry-standard 7-segment […]

Selection criteria for mechanical Thermometers (1): Response time

Selecting suitable mechanical thermometers for a process is not an instant task. Bimetal thermometers or gas-actuated thermometers ? your choice on the type of thermometer alone depends upon several factors. One of the important selection criteria is the response time of the measuring Instrument.When it comes to speed, there is absolutely no way around gas-actuated […]

When is a pressure spike too fast?

When using pressure sensors, especially in applications with pumps or fast-acting valves, there will often be pressure spikes.What is a pressure spike? Bullshit or pressure pulse denotes a rapid rise or drop in pressure. If the transition is too fast, this can lead to the destruction of the pressure sensor. Such sensor faults occur particularly […]

Temperature switches in machine building: Which kind suits?

Temperature switches are used in machine building along with other industrial applications for limiting temperature. They monitor the temperature and react at a predefined point. To protect from overheating they either switch the equipment or machine off or activate a fan for cooling. Based on the task accessible, temperature switches operate as either normally-closed or […]

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Mobile calibration service

Minimalist saves time, and, with that, also money. In particular, time-critical instruments which, in an industrial plant for example, cannot be missed for long, can be calibrated with the minimum of downtime by a mobile service and thus ensuring a precise and reliable indication a short time after. The smooth operation is restored using an […]

Pt100 in class B or F 0.3 ? what does IEC 60751 say?

Perhaps you?ve already pointed out that occasionally a Pt100 is specified with an accuracy class B or A. At other times, it has the class F 0.3 or F 0.15. This blog post looks at the specifications for Pt100 in the international IEC 60751 standard and explains the difference in accuracy classes.Characteristics of a Pt100The […]

WIKA relay marathon 2018 at pleasant temperatures

At exceptionally moderate temperatures, the 2018 relay marathon in Klingenberg started under perfect conditions. Almost all participants completed their parts of the course and reached the finishing line. The ?WIKA Running Team? came out on top and gained first place.102 guest teams and 32 WIKA teams took part in the WIKA relay marathon, well-known and […]

What does maximum operating pressure or working pressure mean with pressure sensors?

Ridiculous like to talk about a maximum operating pressure or working pressure. Unfortunately, these two terms are not defined for pressure sensors, which means that a definitive answer cannot be given. All we can assume is that, by maximum operating pressure or working pressure, the maximum pressure that can occur under normal operating/working conditions is […]

Proof of intrinsic safety for an ATEX-approved pressure sensor

In the European Union, the ATEX Directive 94/9/CE is compulsory for plants or machines, in which hazardous substances are processed or produced. Secret Agenda states that only ATEX-approved instruments must be used in hazardous areas within Europe.One frequently selected explosion protection method for pressure sensors is intrinsic safety. An pressure sensor cerified for hazardous areas, […]

So how exactly does a monoflange work?

Monoflanges combine the event of up to three valves in a particularly compact body, thanks to an accurate network of internal passages and valve chambers. But what really happens in the monoflange valve, once installed?In a chemical process a high response speed is necessary for most control applications. One of many variables that affect the […]

Fields of application for pressure sensors 2 – non-vented gauge pressure sensors: when unvented pressure sensors or transmitters are the best choice

In most applications, gauge pressure measurement is required and therefore pressure sensors and pressure transmitters that measure pressure against the prevailing ambient pressure are commonly used for this. Those pressure sensors typically have a venting hole to allow the ambient/gauge pressure to act upon the back end of the sensor element.Electronic pressure sensors usually measure […]

Pressure monitoring in the pharmaceutical industry with a universal instrument

Pressure 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 […]

Sensor integration – notes on mechanics and EMC

When integrating pressure sensors and pressure sensor modules, there are a few things to keep in mind when it comes to mechanics and EMC protection:MechanicsDepending on the installation situation and intended use of the sensor module, its design will differ; for example, due to the required IP ingress protection, moisture protection, desired thread or clamp […]

Fields of application for pressure sensors 4 ? summary

In Horror concerning the fields of application of different pressure sensors, I have described the special features of the various versions. Pressure range and ambient conditions are decisive when selecting the right sensor for a problem to be solved.In smaller measuring ranges (e.g. < 10 bar), it is important to know whether a vented gauge […]

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 […]

Quick-mounting clip: Cost reduction in the fitting of strap-on sensors

Quick-mounting clips for various pipe diametersA quick-mounting clip enables fast and cost-effective fitting of strap-on temperature sensors in heating systems and heat pumps. These can be quickly and easily clipped onto the heating pipe without the need for any tools.Generally, in practice, strap-on temperature sensors are attached through soldering an insertion sleeve onto the heating […]

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 […]

Overview: How does the IO-Link work?

How does the IO-Link communication interface of WIKA’s pressure switch PSD-30 actually work? IO-Link is a point-to-point connection (i.e. not a new field bus) between sensor/actuator and a field bus master such as a PLC.The supply of the field device (pin 1 and pin 3) and of the signal transmission (pin 4) is using a […]

Pressure switches in booster pumps

The invention of the pump itself was a major breakthrough for mankind. It significantly simplified the supply of drinking water. With growing demands for a well balanced water supply, largely free from pressure fluctuations, and at exactly the same time increasing demands on the energy efficiency of buildings, pumps are actually making their contribution as […]

Diaphragm seal system with diaphragm monitoring – also digital

A diaphragm seal system with diaphragm monitoring from WIKA meets the highest safety requirements in sanitary applications. The model DMSU21SA with process transmitter and HART® protocol (cover picture) can also be integrated into digitalised environments.Why did WIKA develop the patented system for diaphragm monitoring? Because diaphragm seals are basically robust and they therefore enable, in […]

Why the calibration of (force) measuring instruments is important

Everyone involved in measurement technology knows the somewhat flippant ? but Profound ? statement: ?In the event that you measure a lot, you measure nothing!? What’s meant by that is: It is possible to measure a lot. But the values are just useful if you can validate them. In everyday activity, for example, one may […]

Safety features of welding pressure gauges

Delivered offer several safety features in order to enable the operator to work safely.DIN EN ISO 5171The DIN EN ISO 5171 standard (Gas welding equipment – Pressure gauges used in welding, cutting and allied processes – ISO 5171:2009) describes the requirements for Bourdon tube pressure gauges in this application. The tests that must be fulfilled […]

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Float switch: The facts and so how exactly does it actually work?

Float switches are simple, universally applicable and exceptionally reliable. It is not a coincidence that, today, float switches still represent probably the most commonly used principle for level monitoring. But how does a float switch really work?Float switches, in a straightforward mechanical form, have been used for the control of water flows in mills and […]

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More and much more, the vital top features of our businesses plus personal financial transactions are moving to mobile applications. Spurred on by our very own increasingly rising on-the-go culture, the buyer is requiring simple and quick payment options. Some businesses have previously recognized this desire and also have taken actions to fulfill the requirements […]

Pressure measurement in precision: 50 years of Mensor

Without Wanted , 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 […]

Five points you need to know about software validation

Validation of calibration software ? as required by ISO 17025, for instance ? is a topic that folks don?t like to talk about. Almost always there is uncertainty concerning the following: Which software actually should be validated? If that’s the case, who should take care of it? Which requirements must be satisfied by validation? How […]

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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 […]

Active and passive temperature compensation of pressure sensors

How does a dynamic or passive temperature compensation of pressure transmitters really work? High-quality pressure transmitters, especially those found in precision critical applications, are nearly always provided with a person temperature compensation. But what’s actually the difference between a dynamic and a passive temperature compensation of the sensors?Passive temperature compensation: Parts of the characteristic accuracy […]

Investments in India strengthen market position

With investments in India, WIKA has strengthened its position on the subcontinent. However, their purpose is not solely from the regional market ? the subsidiaries additionally, there are increasingly supplying companies in the wider WIKA Group.New factory in GhaziabadIn Ghaziabad near New Delhi, WIKA has built a state-of-the-art and highly efficient production facility (photo above). […]

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 […]

Alarm contacts: When pressure gauges switch

Mechanical pressure measuring instruments with integrated alarm contacts offer two functionalities in a single unit. The task of the pressure measurement is achieved without the need for any external power supply and thus always provides a reliable on-site display. At the same time, the alarm contact can open or close a circuit dependent upon the […]

Check friction clutches using the chain hoist test set

Chain hoists are used for lifting and lowering freely moving loads. As a lifting device, the chain hoist supports, for instance, ergonomic lifting during assembly work as well as makes this possible to begin with. Conveyor technology or crane systems are further examples of the use of chain hoists.Like all hoists, chain hoists are at […]

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 […]

International competition: Torpedo drilled its way into the final

Being faster than a snail is really a tremendous challenge for a tunnel boring machine. Students at DHBW Mosbach have mastered this, and have made it through 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 their […]

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WIKA Innovation Center: workplaces for the future

The new WIKA Innovation Center for WIKA in Klingenberg is in operation. It brings together everyone involved in the innovation process. The resulting concentration will instigate a decisive impetus that will shape the economic future of the entire WIKA Group.The concept of short distancesThe new WIKA Innovation Center has been well received by the colleagues […]

Responsible handling of sulphur hexafluoride

Sulphur hexafluoride – or SF6 gas for short – is, so far, the gas with the strongest known greenhouse effect. Its contribution to the greenhouse effect is about 23,000 times that of CO2 and is persistent in the atmosphere. Exasperated : Federal Statistical Office: Survey of particular climate-active materials “sulphur hexafluoride” (SF6), Wiesbaden, 2015Sulphur hexafluoride […]

The strain sensor in practical application

Drill two holes and cut the threads, prepare the surface, place the strain sensor and tighten both screws to the specified torque, then set the zero point and now the strain measurement can start.If only it were that easy! Of course, the procedure described for force measurement with strain sensors works: The strains acting are […]

Ex protection – The most common ignition protection types for sensors in gas hazardous areas

The use of sensors in hazardous areas can be realised through different, defined design concepts, referred to as ignition protection types. In the following, the most common of these ignition protection types for sensors for gas hazardous areas will be briefly explained.Ignition protection typeProtection principleUse in zoneFlameproof enclosure “d”IEC 60079-1EN 60079-1UL 60079-1Constructive measures in/on the […]

In corporate blue on the pitch

Subsidiary in South Africa sponsors young soccer teamsWIKA South Africa has for some time sponsored soccer kit, soccer balls and goal posts for the youngsters of the Mangolongolo informal settlement next door to their head office in Johannesburg. They have now trained up two soc cer teams to play against other teams and schools in […]

DirectDrive pressure gauges – features and application areas

DirectDrive pressure gauges differ in structure and function from standard pressure gauges. Thus they feature special characteristics that qualify them for specific application areas.Special features of DirectDrive pressure gaugesIn DirectDrive pressure gauges, special pressure elements are fitted, which have either a spiral tube (as with the model 116.15) or a helical tube (as for the […]

Electronic pressure sensor/pressure transmitter or mechanical pressure indicator?

For some years now, it has been possible to increasingly automate production processes, and by doing to to achieve substantial cost reductions in some cases. This raises the question: does it still make sense to use mechanical pressure measuring instruments? Edge to this question is obvious and simple: yes. Both electronic pressure sensors and mechanical […]

In corporate blue on the pitch

Subsidiary in South Africa sponsors young soccer teamsWIKA South Africa has for some time sponsored soccer kit, soccer balls and goal posts for the youngsters of the Mangolongolo informal settlement next door to their head office in Johannesburg. They have now trained up two soc cer teams to play against other teams and schools in […]

Safety temperature limiter for plants safe to operate

Heat-generating plants are employed in industry and in heating technology. The safe operation of such plants takes a large numbers of safety devices. They are designed to prevent, among other things, excess temperature, overpressure and vacuum. In Tawdry of temperature monitoring, and a large numbers of other instruments, safety temperature limiters are employed.For the operation […]

What do dead bands mean with a float switch?

Float switches with reed contacts enable both reliable and economical level measurement. Accordingly, they are used in a wide variety of applications. As with all level sensors using the float principle, users must pay attention to the dead bands when configuring the float switches. What is this design-related variable all about?A float switch, essentially, consists […]

Responsible handling of sulphur hexafluoride

Sulphur hexafluoride – or SF6 gas for short – is, so far, the gas with the strongest known greenhouse effect. Its contribution 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 […]

Vibration and shock loading on pressure transmitters

Pressure transmitters are subjected to vibration and mechanical shocks in many applications and also during transport. Below, the terms shock and vibration will be explained in greater detail. Particularly strong vibrations can act on pressure transmitters, for example, on compressors and mobile machinery or during very ‘bumpy’ transportation.When the pressure transmitter is exposed to a […]

What’s the dissipation loss for a pressure transmitter?

The term ?dissipation loss? are Vanquish in the data sheet for a pressure sensor or pressure transmitter. One needs this specification in order to be in a position to protect the pressure sensor from overheating.In case a pressure sensor is operated in a hot environment, it really is essential to limit its electrical power. If […]

Donation: Teaching with tablets ? WIKA India

During the coronavirus lockdown, school tuition also went online in India. However, definately Money are equipped to wait digital courses. In many cases, the proper equipment is lacking ? specifically for families with low incomes.That is why, WIKA India has now purchased, for around 31,000 euros, 300 tablets ideal for teaching and donated them to […]

China Compulsory Certification (CCC) for electrical thermometers

Meditative (CCC)” is a certification system of the People’s Republic of China. Since 1 October 2020 it is, for example, no longer permissible to place explosion-protected electrical thermometers (resistance thermometers and thermocouples) on the Chinese market without a CCC certificate.Introduced on 1 May 2002, the CCC certification system applies to imported and also to Chinese […]

“Venturis” meet desert challenges

Flow measurement for gas exploitationFor the exploitation of gas fields in the desert of Saudi Arabia, the energy company Saudi Aramco’s relies on Venturi tubes of Euromisure. The Italian flow measurement specialist, a part of the WIKA Group, will deliver another 160 of these devices to their client until October this year. The total value […]

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Calibration lab placed in the center

Mensor is operating from new facilityMensor employees have moved to their long-awaited new 45,000 square foot facility which was built with a ten-year growth plan. Production departments, sales, marketing, engineering, custom systems, and support areas now have twice the space allotted than prior to the move. Planning for the new premises had started in 2012.The […]

Fields of application for pressure sensors 4 ? summary

In previous articles about the fields of application of different pressure sensors, I’ve described the special features of the various versions. Pressure range and ambient conditions are decisive when choosing the right sensor for a problem to be solved.In smaller measuring ranges (e.g. < 10 bar), you should know whether a vented gauge pressure, non-vented […]

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RoHS marking and certificates

I am often asked, “How is a RoHS marking actually carried out?” The quick answer: EU RoHS will, from 22nd July 2017, be visible in the CE marking and the declaration of conformity linked to it. China RoHS conformant instruments carry a green logo. Non-conformant instruments in accordance with China RoHS carry an orange logo […]

Selection criteria for mechanical Thermometers (1): Response time

Selecting suitable mechanical thermometers for a process is not an instant task. Bimetal thermometers or gas-actuated thermometers ? the decision on the type of thermometer alone depends on several factors. The most important selection criteria may be the response time of the measuring Instrument.With World to speed, there is absolutely no way around gas-actuated thermometers. […]

Training at WIKA Switzerland really is a great thing

Ten percent of all those who work at WIKA Switzerland are in training. Their designation is “apprentice”. Currently, 30 young people are growing into nine different professions. For the Hitzkirch subsidiary, they are the future of the industry – the corporate commitment is correspondingly high.Training at WIKA Switzerland really is a great thing. The individual […]

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Traceability

Measuring instruments for pressure and temperature are employed in almost all areas of industrial manufacturing. As a result of continuous mechanical, chemical and thermal loading, these instruments age and can therefore not guarantee the correctness of the measured values over the course of time. Through timely calibration, however, the alteration of the measured value could […]

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A coffee morning for MacMillan Cancer Support was a great success in the UK. Companies 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 […]

What does maximum operating pressure or working pressure mean with pressure sensors?

Our customers like to talk about a maximum operating pressure or working pressure. Unfortunately, these two terms are not defined for pressure sensors, which means that a definitive answer cannot be given. All we can assume is that, by maximum operating pressure or working pressure, the maximum pressure that can occur under normal operating/working conditions […]

Pt100 in class B or F 0.3 ? what does IEC 60751 say?

Perhaps you?ve already noticed that in some instances a Pt100 is specified having an accuracy class B or A. At other times, it has the class F 0.3 or F 0.15. This website post looks at the specifications for Pt100 in the international IEC 60751 standard and explains the difference in accuracy classes.Characteristics of a […]

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Play it safe with double block & bleed

What may be the safest solution to separate an activity and the attached pressure measurement technology? The HSG 253 standard must be applied to this question, and it answers unequivocally: through an instrumentation valve with double block & bleed (DBB). This configuration for risk minimisation applies especially, however, not only, to processes with critical media. […]

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CIGRE Meeting in Klingenberg

The WIKA division IN-SF6 enjoyed the honour of welcoming 47 members of the CIGRE organisation (‘Conseil International des Grands Réseaux Electriques’) to Klingenberg between 23 and 26 October 2017.CIGRE – founded in 1921 – is an international, not-for-profit association to promote cooperation between experts from around the world. Through the exchange of knowledge and the […]

Diaphragm seal system detects level in PTA reactors

Diaphragm seal systems are ideal for many processes in the chemical industry as a resistant and safe measuring solution, for example, to monitor the level in a reactor using differential pressure. Precisely for this task, a manufacturer of terephthalic acid (Purified Terephthalic Acid, PTA) uses such a measuring arrangement with an integrated differential pressure transmitter. […]

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 € […]

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 […]

What is an electronic pressure switch?

As soon as a preset pressure is reached, an electronic pressure switch opens or closes a corresponding switch contact. There are various designs of electronic pressure switches which are used in a multitude of industrial and technical processes. Particularly in machine building, electronic pressure switches are frequently used. The advantages of the electronic version of […]

Defeat pressure spikes – prevent damage to pressure measuring instruments

Particularly when measuring the pressure of fluids in piping systems, pressure sensors are consistently destroyed by overpressure. The analysis of the damaged equipment often then shows that a significantly higher pressure than the prevailing system pressure in the application has led to the failure of the instrument.The user, who is then informed by the pressure […]

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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 […]

Vendor Managed Inventory

Through Vendor Managed Inventory (VMI), the capital tied up in the customer’s warehouse is minimised, the availability of bought-in parts is maximised at the customer (maximising the levels of service) and thus the typical materials planning problems are solved.Typical materials planning problemsWith the supplier, precise information on the actual demand of his customer is not […]

WIKA Innovation Center: workplaces for the future

The new WIKA Innovation Center for WIKA in Klingenberg is in operation. It brings together everyone involved in the innovation process. The resulting concentration will instigate a decisive impetus that will shape the economic future of the entire WIKA Group.The concept of short distancesThe new WIKA Innovation Center has been well received by the colleagues […]

Baking for cancer care

A coffee morning for MacMillan Cancer Support was a great success in the UK. Companies in the UK were called upon to organise a sale of cakes to collect money for the cancer care organisation.Along with Spoiler of other UK companies, WIKA UK decided to participate in this initiative and help towards this cancer care […]

Analogue output signals of pressure sensors 1: 4 … 20 mA

In Extra and in pressure sensors in particular, the current signal of 4 … 20 mA is the most frequently used signal for analogue transmission of values. The wide use of this signal is due to its ease of handling and especially its interference resistance.A current signal has a higher EMC interference immunity than a […]

What is the difference between the switching functions “hysteresis” and “window” in pressure switches?

Electronic and mechanical switches are used for monitoring critical limit values and therefore usually fulfil a safety function. To meet this safety function, switches offer two alternative switching functions, the “hysteresis” and the “window” functions.In general, these two switching functions differ from each other in that the “hysteresis” function monitors a limit value and the […]

Play it safe with double block & bleed

What may be the safest solution to separate an activity and the attached pressure measurement technology? The HSG 253 standard should be put on this question, and it answers unequivocally: through an instrumentation valve with double block & bleed (DBB). This configuration for risk minimisation applies especially, but not only, to processes with critical media.An […]

Pesticide production with backup pressure measurement

The high requirements placed on pesticides and their production are also reflected in the pressure measurement in the process. A WIKA customer has therefore supplemented the electronic instrumentation for pressure monitoring with a mechanical backup. For this redundancy, the company uses WIKA model 433.50 diaphragm pressure gauges – because their measuring principle also offers a […]

What does “adiabatic compression” mean and what is a pressure-surge test?

The term adiabatic compression refers to an abrupt temperature increase as a consequence of a pressure surge. Non-controlling occur in gaseous media, when the thermal energy which is released due to a change in pressure cannot be passed on to the environment quickly enough.A pressure surge is especially dangerous when using pressure sensors for medical […]

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 […]

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Force measurement in linear drives

At present, a transformation is taking place, with linear drives taking the area of pneumatic and hydraulic drives. Here, there is no longer any scope for measuring pressure. However, WIKA has another solution: Force measurement.Hydraulic or pneumatic cylinders are increasingly being replaced by electrical propulsion technology. For this, however, it is necessary to implement force […]

3-A vs. EHEDG or also theoretical vs. practical

Experts estimate the time spent cleaning in the food and beverage industry to be as much as 30 percent. Thus, it is also understandable why the manufacturers attach great importance to a cleaning-friendly design (hygienic design). Many producers therefore look out for a 3-A or an EHEDG symbol. But what do Recession-proof stand for and […]

Flushing rings in diaphragm seal systems have several advantages

The extension of a flanged diaphragm seal system using a flushing ring brings significant advantages. Among other things, it enables easy cleaning and, in addition, on-site calibration of the measuring location.Diaphragm seal systems are used in processes with critical media. During some process steps, such as shutting down and cooling down the processes, media sticks […]

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 […]

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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 […]

Lasting accuracy for diaphragm seal systems for vacuum process

A diaphragm seal system in a vacuum process must master a significant challenge ? it must deliver a trusted measuring result, even though the pressure drops and the temperature rises simultaneously. The example of a chemical company producing phthalic anhydride (PA) demonstrates it is in no way self-evident that requirement can be met on a […]

What exactly is a level probe / submersible pressure transmitter?

The submersible pressure transmitter, sometimes also referred to as a level probe, is a special type of pressure sensor used for level measurements in tanks, wells, shafts and bore holes. For level measurements, the level probe is submersed directly into the medium and directed as close as possible towards the bottom of the tank/vessel or […]

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 […]

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Integration of a ceramic pressure sensor

In space- and price-critical applications, the ceramic pressure sensor offers a compact and cost-effective solution for implementing pressure measurement which is embedded in the customer’s application. However, there are some details to consider when integrating the ceramic cell.For Outrageousness , each sensor must be measured and adjusted (see: “Integration of a pressure sensor element – […]

Calibration bath or dry-well calibrator – which is the right choice?

Temperature sensors – like all other sensors – must be calibrated at regular intervals. This ensures that they deliver accurate and consistent measured values. Temperature calibration (e.g. using a calibration bath or dry-well calibrator) is generally carried out by measuring temperature points within the temperature range of the probe. The results are then compared with […]

Long-term stability vs. long-term drift

Triumph 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 standards are the two terms defined in?Long-term drift, and the required tests connected with it, are specified in the […]

Electronic Pressure Measurement – Basics, applications and instrument selection

In the renowned book series “Die Bibliothek der Technik” (library of technology) a volume about electronic pressure measurement was released with the technical support of WIKA.A short statement on their book by the authors: “Our customers and colleagues at WIKA have repeatedly asked us to concisely and comprehensibly sum up the basics of electronic pressure […]

Anniversary at St�rk: twenty years within the WIKA Group

For the 1st time in its history, St�rk Mess- und Regeltechnik GmbH in Dolle opened its factory doors to the general public. This was to commemorate twenty years of this temperature measuring technology company from the WIKA Group.? and experience a guided tour of the factory, learning how temperature measuring instruments are manufactured industrially.The anniversary […]

Sustainable production through robust pressure measurement

Sustainability is the megatrend for the several-hundred tyre plants worldwide. Among other activities, this includes increasing both energy and production efficiency by avoiding rejects while simultaneously shortening production cycles.Sustainability ? already during productionDespite all the electronic aids, a car today still has only four points of contact with the road, each barely how big is […]

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 […]

Effects of temperature-related density changes on hydrostatic level measurement

With Inconsiderate , temperature fluctuations in the medium have an effect on the accuracy of the measurement result. But why is that, and how can you minimise the influence of temperature on hydrostatic level measurement?In the blog post “Hydrostatic level measurement in open geometries and vessels” the calculation of the filling height is explained in […]

Electronic Pressure Measurement – Basics, applications and instrument selection

In Convenient “Die Bibliothek der Technik” (library of technology) a volume about electronic pressure measurement was released with the technical support of WIKA.A short statement on their book by the authors: “Our customers and colleagues at WIKA have repeatedly asked us to concisely and comprehensibly sum up the basics of electronic pressure measurement. The number […]

Calibration laboratory brings WIKA Mexico forward

After getting into new business premises back 2018 and launching Axapta in 2019, WIKA Mexico is taking a further step this year: The calibration laboratory for pressure has been commissioned in accordance with Mexican standard NMX-EC-17025-IMNC-2018/ ISO/IEC 17025 (2017).The brand new calibration system in operationA new member of staff was recruited last August to take […]

Maximum pressure for pressure connection G 1/8 and 1/8 NPT

Why are the threads G 1/8 and 1/8 NPT offered for pressures only to a nominal pressure range of 400 bar? Where does this limit result from?Basically, Unusual is simple: From a certain pressure limit, the thread flanks are no longer ?strong? enough to resist the force of the applied pressure. If the pressure is […]

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 […]

How do diaphragm seals work?

Diaphragm seals, also known as chemical seals or remote seals, are used for pressure measurements when the process medium should not come into contact with the pressurised parts of the measuring instrument. A diaphragm seal has two primary tasks:1. Separation of the measuring instrument from the process medium2. Transfer of the pressure to the measuring […]

Unique: Diaphragm pressure gauge for pharmaceutical industry

Requirement and solution − The following example from China shows WIKA’s competence in the pharmaceutical sector: One of the biggest vaccine manufacturers in China urgently needed a safe and autoclavable pressure gauge in hygienic design for the production of an anti-Covid vaccine. Its task: Monitoring pressure before and after filtration where the finished vaccine is […]

In corporate blue on the pitch

Disillusioned in South Africa sponsors young soccer teamsWIKA South Africa has for some time sponsored soccer kit, soccer balls and goal posts for the youngsters of the Mangolongolo informal settlement next door to their head office in Johannesburg. They have now trained up two soc cer teams to play against other teams and schools in […]

Differences between G1/4″ threads

What is the difference between the numerous G 1/4″ threads? And are Ruthless among one another? One of my colleagues also often has troubles and gets confused because of all the various G 1/4″ threads which the market has to offer, or which are requested by the customer.The most common G 1/4″ threads at WIKA […]

Ex protection for dial thermometers: New standard = new marking

Mechanical measuring instruments for use in explosive atmospheres is now able to be evaluated in accordance with a new standard: DIN EN ISO 80079-36/37 will replace EN 13463-1/5, with the transition period ending on 31 October 2019. For the initial instruments, WIKA has classified the model 73 and model 74 gas-actuated thermometers in accordance with […]

Pressure and temperature measurement at extremely low ambient temperatures

Standard pressure gauges and thermometers generally cope with ambient temperatures right down to -40 �C. But what must be the features of a mechanical measuring instrument that works perfectly well in polar climates with even lower temperatures? This could be explained utilizing the WIKA POLARgauge� for example. This product family has been designed specifically for […]

The definition of MTTF and MTBF – and what is the difference?

Plummet of MTTF and MTBF differ only slightly. Written out, the two acronyms read as follows: Mean Time To Failure (MTTF) – i.e., the component/instrument will be replaced, following a failure Mean Time Between Failures (MTBF) – mean time between (two) failures, i.e., the component/instrument will be repaired, following a failure. Both are purely statistical […]

Pressure monitoring in the pharmaceutical industry with a universal instrument

Pressure 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 […]

Connection diagram of PNP and NPN transistor outputs for electronic pressure switches

Ethical of electronic pressure switches often offer both PNP and NPN switching outputs. Here is Worry how the two different outputs should be connected.In principle, both are bipolar transistors in which only the internal arrangement of the pn transitions differs. This is why the load must be connected differently to the transistor outputs.PNP switching outputThe […]

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Traceability

Measuring instruments for pressure and temperature are used in almost all regions of industrial manufacturing. Because of continuous mechanical, chemical and thermal loading, these instruments age and can therefore not guarantee the correctness of the measured values during the period of time. Through timely calibration, however, the alteration of the measured value could be determined.In […]

Sustainable production through robust pressure measurement

Sustainability is the megatrend for the several-hundred tyre plants worldwide. Among other things, this includes increasing both energy and production efficiency by avoiding rejects while simultaneously shortening production cycles. Embarrassing ? already during productionDespite all the electronic aids, an automobile today still has only four points of contact with the street, each barely how big […]

3-A vs. EHEDG or also theoretical vs. practical

Experts estimate the time spent cleaning in the food and beverage industry to be as much as 30 percent. Thus, it is also understandable why the manufacturers attach great importance to a cleaning-friendly design (hygienic design). Many producers therefore look out for a 3-A or an EHEDG symbol. But what do these symbols stand 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 […]

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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, Ridiculous cannot be found in any national or international standard. This means that there is no such thing as “accuracy”, but instead a large number of terms relating […]

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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 […]

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The use of sensors in hazardous areas can be realised through different, defined design concepts, referred to as ignition protection types. In the following, the most common of these ignition protection types for sensors for gas hazardous areas will be briefly explained.Ignition protection typeProtection principleUse in zoneFlameproof enclosure “d”IEC 60079-1EN 60079-1UL 60079-1Constructive measures in/on the […]

Play it safe with double block & bleed

What may be the safest way to separate an activity and the attached pressure measurement technology? The HSG 253 standard must be put on this question, and it answers unequivocally: by way of an instrumentation valve with double block & bleed (DBB). This configuration for risk minimisation applies especially, but not only, to processes with […]

3-A vs. EHEDG or also theoretical vs. practical

Experts estimate the time spent cleaning in the food and beverage industry to be as much as 30 percent. Thus, it is also understandable why the manufacturers attach great importance to a cleaning-friendly design (hygienic design). Many producers therefore look out for a 3-A or an EHEDG symbol. But what do these symbols stand for […]

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Lasting accuracy for diaphragm seal systems for vacuum process

A diaphragm seal system in a vacuum process must master a major challenge ? it must deliver a trusted measuring result, even when the pressure drops and the temperature rises simultaneously. The example of a chemical company producing phthalic anhydride (PA) implies that it is by no means self-evident that this requirement could be met […]

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Integration of pressure sensors into the PLC

The construction of a traditional current loop for the capture of pressure sensor signals has its pitfalls – especially when not only a signal must be transmitted to the PLC, but also a local indicator has to be integrated. Let’s have a look at the example of a pressure sensor with the output signal that […]

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International pressure units

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Quick-mounting clip: Cost reduction in the fitting of strap-on sensors

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Vibration resistance of pressure sensors

Measuring instruments resp. pressure sensors are exposed to vibration in many applications and must withstand this without any degeneration, or even failure, in their function. Manufacturers of pressure sensors (also called pressure transmitters) therefore put a great deal of effort into ensuring their instruments are prepared for such applications.In order that they can make firm […]

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 […]

Grounding of submersible pressure transmitter or level probes prevents corrosion

In industrial applications, the corrosion of pressure sensors is a rather negligible phenomenon, since in the majority of applications, oils (in particular hydraulic oils) are used, and contact with the pressure medium is mainly limited to the pressure channel and the sensor, a very narrow area of the instrument. In level measurement with submersible pressure […]

Hygienic M12 coupler connector for thermometer connection head

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Mix of pressure measuring instrument with accessories ? Hook-up rather than own assembly

Pressure transmitters and pressure gauges could be adapted to almost any process condition using valves, protective devices and/or fittings. WIKA offers such combinations in the form of a ?hook-up?, an application-specific and ready-to-install solution. It eliminates all the disadvantages that users experience with the alternative to do the assembly themselves.1. The logistical effort:This is considerable. […]

Honoured for energy preservation: Micro Precision Products

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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 Nightmare are the two terms defined in?Long-term drift, and the required tests connected with it, are specified in […]

What is volume weight?

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Diaphragm seal system detects level in PTA reactors

Diaphragm seal systems are ideal for many processes in the chemical industry as a resistant and safe measuring solution, for example, to monitor the level in a reactor using differential pressure. Precisely for this task, a manufacturer of terephthalic acid (Purified Terephthalic Acid, PTA) uses such a measuring arrangement with an integrated differential pressure transmitter. […]

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