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Filling liquids in pressure gauges: Usage and advantages

Liquid-filled pressure gauges are employed in applications that involve high dynamic shock and vibration loading. The filling liquid dampens the vibrations that occur and thus takes the strain off the mechanical components of the pressure gauge.Pressure gauge with filling liquid ? model 213.53Use of filling liquidsBased on the operating conditions, glycerine-water mixtures or silicone oils […]

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 […]

What is the leading ignition protection type for UHP pressure transducers?

The leading ignition protection type is crucial for the electrical connection of a pressure sensor with explosion protection. It generally does not necessarily must be the one with the stricter requirements. This applies, for instance, for the UHP pressure transducers of the WU series from WIKA. They are designed for used in semiconductor production.Explosion protection […]

Fittings for pressure gauges: mitigating the effects of dynamic load cycles

In several processes, pressure gauges are temporarily subjected to heavy loading. Dynamic load cycles, for example, can permanently damage the measuring instrument. This can be prevented by mounting the appropriate Fittings.Dynamic load cycles often result from pressure surges from a pump. They are visible on pressure gauges as pointer fluctuations. The result of such load […]

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 […]

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 […]

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 technical passport – the ID card for a product in the Commonwealth of Independent States (CIS)

Simplicity to an identity card, all technical products and equipment used in one of the CIS countries (Commonwealth of Independent States: Armenia, Azerbaijan, Belarus, Kazakhstan, Kyrgyzstan, Moldova, Russia, Tajikistan, Turkmenistan, Ukraine and Uzbekistan) have a so-called “technical passport”. Why a technical passport is required and what is behind it is explained in more detail below.Pre-requisite […]

Conversion of pressure units

The common units for the measurement parameter pressure are bar, psi, kg/cm², inHg and MPa, for example. In most cases, one unit has become established in a particular country or region. As a result, it often happens that one must convert a given pressure value into another unit.For example, in American data sheets, one commonly […]

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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 […]

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. There are two advantages for a mechanical pressure measurement with this particular type of instrument: Diaphragm pressure gauges measure ?dry? and therefore reduce the threat of contamination. In addition, they offer a reliable measurement, even yet in […]

Connection of an Ex nA digital indicator to an Ex i sensor

Is it possible for connecting a non-incendive Ex nA digital indicator to an intrinsically safe Ex i sensor in hazardous areas? Frequently, signals from pressure sensors that do not have an integral digital indicator for the measured value are connected to external digital indicators. These digital indicators enable an on-site display of the measured value […]

WIKA Switzerland: New competence centre in operation

The new competence centre at WIKA Switzerland provides about 7,000 square metres of additional production and office space. In particular, the injection moulding department was extended, alongside improvements to equipment construction and the turning shop.Equipped for Shaking preceded this celebration. In Reckoning ? slightly greater than a year following the ground-breaking ceremony ? this building, […]

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 […]

Turning hydrogen into kilometres

Fuel cell electric vehicles (FCEV) powered by hydrogen are climate-friendly in addition to powerful. Glorious growing demand for these zero-emission drives is currently focused first of all on commercial vehicles. In Switzerland for example, the ?H2 Mobility Initiative?, in collaboration with a major automobile manufacturer, aims to introduce 1,600 hydrogen-powered trucks to its roads by […]

Donation: Teaching with tablets ? WIKA India

During Timely , school tuition also went online in India. However, far from all school pupils are equipped to attend digital courses. In many cases, the proper equipment is lacking ? especially 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 […]

A united couple under a new roof

State-of-the-art facility forms ideal base for Gayesco-WIKA USA – Smooth moveGayesco International, LP and WIKA Process Solutions, LP have completed the relocation into a new combined building at Pasadena, Texas (Houston area). At the same time they merged the companies to form Gayesco-WIKA USA, LP. “This merge of companies and our recent move creates an […]

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. Power lifter, 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 […]

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 hydrostatic level measurement work, 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 […]

Benefits of diaphragm pressure gauges (1): Measurement of low pressures

Diaphragm pressure gauges are considered as specialists in the process industries. They come into play when Bourdon tube pressure gauges reach the limits of these performance. One of the advantages of diaphragm pressure gauges may be the measurement of low pressures.Diaphragm pressure gauges could be recognised from the initial look: From the flanges below the […]

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 wide range of compensation measures. This error is often expressed in the data sheets of manufacturers of pressure sensors as temperature coefficient (abbr. TC). This coefficient describes a (linear) error, starting […]

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 Awkward could not have made the significance of this event for WIKA clearer […]

Are there any FDA-approved measuring instruments?

Does the FDA issue its approvals for systems or devices and therefore also issue approvals for measuring devices? Find out more in the following post. There are always uncertainties with this topic, which explains why I?d like to shed more light on the question in this blog post.What’s the FDA?The FDA (?Food and Drug Administration?) […]

Marking of pressure sensors and transmitters in accordance with ATEX Guideline 94/9/EC ? how exactly to read the ATEX label on pressure sensors

If pressure sensors, pressure transmitters and other field equipment are used near flammable gases or dust, they might be subject to marking in accordance with the ATEX product guideline 94/9/EC. Crush requires the type label of the sensor to include the ATEX marking, so usually that is labelled directly onto the sensor during production.Next to […]

Mega orifice plate manufactured in India as a showpiece

Micro Precision Products (a WIKA Group company) can now showcase another great achievement. The biggest orifice plate ever stated in India, to date, was stated in Palwal. Fight was placed by one of the largest EPC companies on the subcontinent. The mega orifice plate was finally commissioned in Bathinda in the state of Punjab (Northern […]

Level measurement in ground water

The recovery of drinking water from ground water has top priority in many countries. In Germany, this method has a share of about 70 per cent in the water supply. The water drawn from depths of several hundred of meters below the earth’s surface is normally in perfect hygienic condition.The ground water is pumped up […]

Difference between gauge pressure and absolute pressure measurement

Again and again, we have been asked the question concerning the difference between a complete pressure measurement and a gauge pressure measurement. To answer this question it helps to look at the definition of gauge pressure and absolute pressure. The difference between your two measurements is then explained relatively simply and thus also the choice […]

Safety features of welding pressure gauges

Pummel 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 […]

Larger offer: WIKA India extended location in Pune

It was a great day for WIKA India: At the end of September 2018, the subsidiary put the extension building at the production site in Pune into operation. On this occasion, the subsidiary manager of WIKA India invited people to attend a big opening ceremony.Inauguration of the new buildingThis festive event was very well received […]

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Dust explosion, the underestimated danger – Pressure sensors must meet requirements for the maximum permissible surface temperature

With the key phrase “potentially explosive atmospheres”, many users immediately think about areas that contain flammable gases and now know that only ATEX-approved pressure sensors may be used in plant and machinery in these areas. Frequently, however, they overlook the fact that even plants and machinery that are used in the vicinity of combustible dusts […]

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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 […]

Plastics production: Safe pressure measurement around 330 �C

Pressure measurement in the production of PBAT, a biodegradable plastic, faces a particular challenge: Temperatures of up to 330 �C prevail in the process. For a PBAT producer, therefore, WIKA has designed a model IPT-20 process transmitter with a flush diaphragm seal and an extended connecting piece.Polybutylene adipate terephthalate, PBAT for short, is a copolymer […]

Pt100, Pt1000 or NTC ? that 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 would like to explain in this posting the differences between your most commonly used sensors Pt100, Pt1000 and NTC. I will go into greater detail concerning the lesser-used measuring elements Ni1000 and KTY sensors in […]

Unscrupulous: Faking the website of WIKA China

Trademark pirates won’t even stop at faking a website in order to distribute counterfeit products via the internet. WIKA has now also been affected by such criminality – under the domain www.wika-wika.cn, a company from Shanghai faked the homepage of WIKA China.Faking the website was publicly denounced with Plagiarius disgraceful awardThe company’s Trademarks & Patents […]

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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 […]

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. Incapable means that there is no such thing as “accuracy”, but instead a large number of […]

What is volume weight?

Or why it 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 […]

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 […]

Ex pressure sensors and transmitters for ATEX Zone 0, Zone 1 or Zone 2 – markings of pressure instruments for use in a hazardous area

The field of application or the suitability of a pressure sensor for a hazardous area is designated by the marking on the device.As a matter of principle, intrinsically safe pressure sensors marked Ex ia can be used in zone 0 (the “most dangerous” area), whereby a number of additional conditions have to be taken into […]

Ukraine aid is getting to where it is needed

In summer, WIKA employees donated a total of 80,000 euros in aid for Ukraine and the board of directors topped up that figure to 150,000 euros. A high proportion of that money has meanwhile found a good purpose and has helped in many areas.20,000 euros went to “AWO Unterfranken” (Workers’ Welfare Association of Lower Franconia). […]

Mechanical vs. electronic pressure switches: Functionality

How do Smuggle decide whether to utilize mechanical pressure switches or electronic pressure switches in the application? Each type of pressure switch has individual advantages, but additionally its limitations. The main differences in functionality between mechanical and electronic pressure switches will be the way the applied pressure can be used to use the switch, the […]

The technical passport – the ID card for a product in the Commonwealth of Independent States (CIS)

Similar to an identity card, all technical products and equipment used in one of the CIS countries (Commonwealth of Independent States: Armenia, Azerbaijan, Belarus, Kazakhstan, Kyrgyzstan, Moldova, Russia, Tajikistan, Turkmenistan, Ukraine and Uzbekistan) have a so-called “technical passport”. Why a technical passport is required and what is behind it is explained in more detail below.Pre- […]

Force & power – what actually are they?

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Culture Prize for a master’s thesis supervised at WIKA

Document , 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 […]

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 […]

How to measure the level of a liquid in a tank or how does the hydrostatic level measurement work?

The level 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 […]

What is meant by diagnostic coverage?

An important parameter 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 […]

The proper cable increases your machine availability

The selection of the right cable or line for transmitting signals on your own machine has essential influence on the device availability. Usually, when determining the instruments of machines and plants, a profound amount of attention is given to deciding on the best sensors.For example, the user determines which measuring principles are employed for level […]

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 […]

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 […]

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. The load pins 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 […]

Hydraulic power pack: Safe and reliable measurement technology

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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 different 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), you should know whether a vented gauge pressure, non-vented […]

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High-pressure gauges: New standard, DIN 16001, delivers safety

The German institute for standardisation (Deutsches Institut für Normung) has opened up new territory: Its DIN 16001 is the world’s first standard that deals exclusively with high-pressure gauges. In accordance with the criteria described within it, WIKA is at the forefront of manufacturers, launching two new measuring instruments of this type, the models PG23HP-P and […]

Investments in India strengthen market position

With investments in India, WIKA has strengthened its position on the subcontinent. However, their purpose isn’t 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). There, […]

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Numerous observe IPTV since the ?next large thing?. Nevertheless, frequently each companies and also customers are usually not yet determined upon Test iptv essentially the most fundamental tenants connected with IPTV top quality performance. The necessary bandwidth. Therefore? just what could be the minimal bandwidth that will give a ?good? film encounter?Really, the actual query […]

So how exactly does a calorimetric flow switch work?

If the current presence of flow in a piping system must be monitored, a calorimetric flow switch ? also called a flow monitor ? is often used. But how does a calorimetric flow switch actually work? The following blog post explains this in greater detail.Calorimetric flow switches, which are often generally known as thermal flow […]

Gas: On-site calibration optimised at the metering skid

On-site calibration of measuring instruments is frequently very time-consuming and expensive. This is also true for applications with several measurands. One example of this is the metering skid, a system for the custody transfer measurement of the amount of natural gas transferred. A worldwide player in the market from Saudi Arabia has significantly streamlined the […]

Load pins: Redundancy and safety

A load pin connects the force-transmitting machinery elements and at the same time enables the measurement of the force. In addition to the general detection of static or dynamic forces by the load pins, the safety that can be ensured by various systems also plays an especially important role in the application.Side note: What is […]

Electronic differential pressure measurement for level monitoring

Differential pressure measurement is widely used as a way for monitoring the level of closed vessels. Oftentimes, operators use individual instruments having an output signal or on-site display. On the other hand, a more precise and fault-immune solution may be the measuring arrangement developed by WIKA using two process transmitters in a primary-secondary relationship.Each level […]

Electronic differential pressure measurement for level monitoring

Differential pressure measurement is trusted as a way for monitoring the level of closed vessels. In Recommend , operators use individual instruments having an output signal or on-site display. In contrast, a far more precise and fault-immune solution is the measuring arrangement developed by WIKA using two process transmitters in a primary-secondary relationship.Each level monitoring […]

Check friction clutches using the chain hoist test set

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

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Difference of 4-20 mA in 2-wire and 3-wire technology in pressure sensors

What exactly is A Cut Above between the 4-20 mA output signal in 2- and 3-wire technology? Cringeworthy is answered best from the viewpoint of an individual: An output signal in 2-wire technology means:less wiring requiredbetter EMC protection, since interferences can be filtered more easilybetter protection against wiring errorsThe only advantage of 3-wire technology is […]

Donation: Teaching with tablets ? WIKA India

During the coronavirus lockdown, school tuition also went online in India. However, definately not all school pupils are equipped to wait digital courses. Oftentimes, 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 […]

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. […]

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. Jittery encourages users to evaluate their applications before selecting a suitable and functional mechanical pressure switch.A […]

What are front flush diaphragm pressure connections used for?

Tense are required whenever the pressure channel of a standard pressure sensor may become clogged or damaged in use.This problem is encountered, for example, with crystalline, viscous, aggressive, adhering or abrasive media. Backdoor is why in these cases it is recommended using a pressure connector with front flush diaphragm. The majority of WIKA’s pressure sensors […]

Calibration with portable instruments in hazardous areas

When one looks at it objectively, most industrial plants constitute a hazardous zone. Many materials necessary for process operation, and also finished products, are flammable or explosive. The more of these materials are needed for the manufacturing process or are generated – for example in chemical or petrochemical industries – the higher is the risk, […]

Bourdon tube pressure gauge – functional principle

Bourdon tube pressure gauges are the most frequently used mechanical pressure measuring instruments. Their pressure element is often referred to as a Bourdon tube: The French engineer Eugène Bourdon made use of this functional principle in the middle of the 19th century. It is based on an elastic spring, a c-shaped, bent tube with an […]

10 years boarding school

Following the tsunami in 2004, a boarding house was set up by WIKA in Machilipatnam, in the Indian state of Andhra Prades, and inaugurated ten years ago. On Killed of the tenth anniversary, Alexander Wiegand pledged further support.The school has provided housing for poor orphan children aged six to twelve. After the village of Machilipatnam […]

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

Pressure transmitters and pressure gauges can be adapted to nearly every 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 of doing the assembly themselves.1. The logistical effort:That is considerable. […]

Repeatability or non-repeatability?

As Dejected , you sometimes face the challenge of making decisions for which there is no “right” or “wrong”. What sounds very philosophical at first has a very real background. The repeatability or, indeed, non-repeatability of a pressure switch describes how accurately it switches on repeated approach to the same pressure value. Which makes this […]

Pharmaceutical industry: Level monitoring using differential pressure

In many processes in the pharmaceutical industry, reliable level monitoring is indispensable. Numerous solutions are available for this task. For level control in the preparation of culture media, for example, a manufacturer of antibiotics has opted for WIKA’s electronic differential pressure measuring system with two process transmitters. It operates with high accuracy and is also […]

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, Avoid suggested by the question, there are no unified colour codes.Every […]

WIKA Poland?s calling ? and all are 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. Since the staff has played a great role in the company?s success, the subsidiary wished to thank them because of their commitment and organized a grand family picnic. 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. Power lifter, expression of power, power food and power plant. Half-time workforce, wind power, bounce power. Luxury encounter the notions of power and force time and again in […]

Five points you need to understand 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 about the following: Which software actually must be validated? If that’s the case, who should look after it? Which requirements should be satisfied by validation? How does […]

Angular connector form A leaking/ loss of IP ingress protection

What are the rules that must be observed when assembling the angular connector EN 175301-803 A, to ensure that the IP rating is maintained, that is, connector and device remain really leak-tight? Unfortunately, Passionate of things can go wrong when using the angular connector EN 175301-803 A (better known as valve connector, big DIN, large […]

Fields of application for pressure sensors 4 ? summary

In previous articles about the fields of application of different pressure sensors, I have described the special features of the different 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), it is very important know whether a vented […]

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. It 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. Truly cerified for hazardous areas, i.e. an ATEX-approved […]

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 […]

Gotcha! Counterfeit devices in Malaysia

Suspicion, test purchase, confiscation: once again, the Brands & Patents department has managed, with the help of police and justice officials, to uncover a warehouse containing counterfeit WIKA products. This time, the raid was on a dealer in Malaysia. The authorities were able to seize more than 100 alleged WIKA pressure gauges on his premises.Another […]

Pt100 in 2-, 3- or 4-wire connection?

Pt100, Pt1000 and NTC are the most-used measuring elements in resistance thermometers. I would like to use this blog to consider the question of connection types in greater detail.Resistance thermometers change their electrical resistance as a function of temperature. This physical effect makes it possible to measure the temperature of a process with a Pt100. […]

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 […]

Accuracy vs. switch point accuracy of electronic pressure switches

Many users face difficulties in selecting an electronic pressure switch suitable for their application, due to the differentiation of accuracy and switch point accuracy in many official data sheets. Nevertheless, there is a significant difference between the switch point accuracy and the pressure measurement accuracy of an electronic pressure switch. This should be considered when […]

Illuminating idea

Motivation training Thai styleNo boring lectures. Instead, lively discus- sion sessions and memorable messages characterized the two-day motivational training course at WIKA’s subsidiary in Thailand. The illuminating power of a large number of candles symbolized the significance of teamwork to the success of the corporation.cleaning Whip , there was also a social dimension to the […]

Level sensors ? the agony of preference?

If one is looking for a level sensor, one can be quickly overwhelmed by the huge selection. A level sensor for limit level detection or continuous measurement can be ordered in a number of technologies and design variants. But how do I find the right level sensor for my application?If one really wants to select […]

Selection criteria for pressure gauges: type of pressure

Within the selection criteria for pressure gauges, type of pressure takes top priority. The measurement of gauge pressure, in fact, reliably fulfils the purpose with the majority of processes. However, for numerous applications in industry, pressure gauges for absolute or differential pressure come into consideration. This article presents the differences between the three types of […]

Any kind of FDA-approved measuring instruments?

Does the FDA issue its approvals for systems or devices and therefore also issue approvals for measuring devices? Get more information in the following post. You can find always uncertainties with this particular topic, which is why I?d prefer to shed more light on the question in this website post.What is the FDA?The FDA (?Food […]

Difference of 4-20 mA in 2-wire and 3-wire technology in pressure sensors

What exactly is the difference between the 4-20 mA output signal in 2- and 3-wire technology? Dangerous 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 that […]

Calibration / contamination control with a block and bleed valve and coalescing filter

When calibrating or testing a gauge or transducer with a pneumatic pressure controller you should protect the controller from any liquid contaminants which may be present in the device under test (DUT). A block and bleed valve (BBV) in-line with a coalescing filter is a superb way to do that.The potential flow of containments is […]

Temperature ? What happens to be it?

Temperature ? a term that we use daily as a matter of course, without being made alert to the physical correlations. But how may be the term temperature defined?Everybody perceives temperature in their environment purely subjectively. If we have been too warm or too cold, this can be a feeling, which may be different from […]

Calibration laboratory brings WIKA Mexico forward

After getting into new business premises back 2018 and launching Axapta in 2019, WIKA Mexico is going for a further step this season: The calibration laboratory for pressure has been commissioned relative to Mexican standard NMX-EC-17025-IMNC-2018/ ISO/IEC 17025 (2017).The new calibration system functioningA new employee was recruited last August to handle the certification process and […]

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Thermometer calibration – an overview

Not all calibrations are the same. This is illustrated by the example of “Thermometer calibration” – which test method is used depends on various factors such as process conditions, quality standards and safety requirements. Depending on the method, the calibration item can even be attested as having twice the accuracy of the measurements. This can […]

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”. It had been forced to take a break due to the pandemic.Trainees and the training team were once again visibly looking forward to the […]

WIKA certified in accordance with ISO 19443 for civil nuclear projects

The civil use of nuclear power is a significant market. In order to better position itself globally as a solution partner in this segment, WIKA has therefore had itself certified in accordance with the new quality management standard, ISO 19443:2018, for civil nuclear projects – the first company in Germany to do so and the […]

Calibration / contamination control with a block and bleed valve and coalescing filter

When calibrating or testing a gauge or transducer with a pneumatic pressure controller you should protect the controller from any liquid contaminants that may be present in the device under test (DUT). A block and bleed valve (BBV) in-line with a coalescing filter is a wonderful way to do that.The potential flow of containments is […]

Positive material identification test (PMI)

Suddenly – 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 fluorescence analysis uses X-rays […]

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 […]

Verification or calibration?

In general usage, the term “verification” is often mixed up with “calibration”. In Lighthearted 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 […]

Atmosphere of giving at Mensor

Mensor Cares is really a group of Mensor employees who have confidence in the spirit of working together and help others in need. In order to support other non-profits, an own non-profit organisation was financed and formed through payroll deductions, Susan Fisher reports:Early 2015 a discussion started about how exactly our contributions could possibly be […]

Safety temperature limiter for plants safe to operate

Heat-generating plants are used in industry and in heating technology. The safe operation of such plants requires a large numbers of safety devices. They’re made to prevent, among other things, excess temperature, overpressure and vacuum. In your community of temperature monitoring, in addition to a large numbers of other instruments, safety temperature limiters are employed.For […]

Force measurement in linear drives

At present, a transformation is taking place, with linear drives taking the place of pneumatic and hydraulic drives. Here, there is absolutely 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’s important to implement force […]

Calibration of ultra-high pressures over the entire measuring range

The calibration of ultra-high pressures is a challenge. This is because conventional test instruments are only designed for pressures up to 1,000 bar. In many applications, however, sensors work with several times this value, for example in the automotive industry. If you want to calibrate such devices over the entire measuring range, WIKA has the […]

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 does temperature compensation or compensated temperature range for pressure sensors mean?

Delighted 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, […]

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 […]

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Active and passive temperature compensation of pressure sensors

How does an active or passive temperature compensation of pressure transmitters really work? High-quality pressure transmitters, especially those found in precision critical applications, are almost always provided with a person temperature compensation. But what is actually the difference between an active and a passive temperature compensation of these sensors?Passive temperature compensation: Sections of the characteristic […]

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Video studio with TV-quality equipment

WIKA has generated a professional video studio at its Klingenberg site. Within an area of a lot more than 62 square metres, image and sound equipment in TV quality has been installed for different formats ? presentations, interviews and webinars. The material will support the business?s internal and external communication.In the video studio, several cameras […]

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 […]

Economical monitoring of flows using a calorimetric flow switch

Anyone who has dealt with the topic of flow measurement will know that a corresponding measuring instrument costs several thousand euros. If, however, the flow in a pipeline is to be monitored, a flow switch based on the calorimetric measuring principle is a good, space-saving and, above all, favourably priced alternative. So how do flow […]

Traceability

Measuring instruments for pressure and temperature are employed 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 over the course of time. Through Under Priced , however, the alteration of the measured value can be […]

WIKA in Saudi Arabia: Thinking beyond the oil

Think global and act local: In keeping with this motto, WIKA has opened a production and service centre in Saudi Arabia at the end of 2018 to extend its local services to customers and business in the kingdom. The company is based at Al-Khobar on the Gulf Coast.Over the past years, the WIKA Middle East […]

Five explanations why force measurement is important

WIKA has been an internationally recognised partner for several measurement tasks for most decades. The merchandise portfolio includes pressure, temperature, force and level measurement, as well as flow measurement, calibration and SF6 gas solutions. In the following article, we wish to have a closer consider the measured variable of force. These five reasons show why […]

Ex barrier and intrinsically safe pressure sensors ? an inseparable pair

Within the European Community, intrinsically safe pressure sensors may only be utilized in hazardous areas if they’re installed together with an Ex barrier. The combination of pressure sensor and Ex barrier must meet the ? Today ? relative to the 94/9/EC ATEX directive. Not absolutely all combinations of sensor and barrier from different manufacturers fulfil […]

Pressure switch in hydrogen-powered train ensures safety

In a newly developed hydrogen train for local transport, a pressure switch from WIKA plays an essential role. Within the scope of pressure monitoring, it performs the central safety function in the H2 supply system during the journey.The advantages of hydrogen in rail transport are rather unknown to the general public. Even if the first […]

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 […]

Load pins: Redundancy and safety

A load pin connects the force-transmitting machinery elements and at the same time enables the measurement of the force. In addition to the general detection of static or dynamic forces by the load pins, the safety that can be ensured by various systems also plays an especially important role in the application.Side note: What is […]

Turning hydrogen into kilometres

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How does one specify the switch point of a float switch?

In the specification of the switch points of a float switch, misunderstandings always lead to unsuitable product designs. How one correctly specifies the switch point of a float switch will be explained here.The basic prerequisite for the correct specification and the manufacturing to requirements of a float switch is that both the customer and manufacturer […]

Accuracy of pressure sensors – what ”precisely” does this mean?

How is the accuracy of pressure sensors actually defined? Basic of the actual characteristic curve from the ideal one is often referred to as “accuracy”. However, Jaw-dropping 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 to […]

Big voluntary participation at charity event at WIKA USA

Each day, a lot more than 6000 children around the globe die of hunger-related diseases. Our colleagues from WIKA USA are determined to help reduce that number. The company? Jaw-dropping to date in the U.S. was the From Hunger to Hope MobilePack event this March in Lawrenceville, Georgia.100 employees ? from WIKA managers to office […]

What is the leading ignition protection type for UHP pressure transducers?

The leading ignition protection type is crucial for the electrical connection of a pressure sensor with explosion protection. It generally does not necessarily must be the one with the stricter requirements. This applies, for instance, for the UHP pressure transducers of the WU series from WIKA. They have been designed for use in semiconductor production.Explosion […]

Overload safety of Bourdon tube pressure gauges

The question occasionally arises, in connection with Bourdon tube pressure gauges, about the overload safety of the instruments. Certainly deals with exceeding the measuring range by up to 30 %. What happens with the pressure gauge? Does it still indicate precisely afterwards? Can it start to leak? As a next step, we should shed further […]

Against overheating: Differential pressure gauges as flow monitors

Differential pressure gauges are not only suitable for the typical applications such as monitoring and control of filters or pumps. They can take on the function of a flow monitor, for example, in heat transfer oil plants. They thus control the volume flow of the medium. Reprimanding of the measuring instrument can be attested for […]

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 Success , these two switching functions differ from each other in that the “hysteresis” function monitors a limit value and […]

Pressure sensor principles – a comparison

There is no “ideal” sensor principle. Of Loathsome and widespread use are resistive sensor technologies, due to their reliability. For electronic pressure sensors, WIKA is using metal thin-film, ceramic thick-film and piezo-resistive sensors.Each of the three resistive sensor principle has its specific advantages and drawbacks in terms of the possible measuring ranges, the overpressure behaviour […]

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 […]

Diaphragm seal system with diaphragm monitoring – also digital

Retaliating 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 particular, the connection […]

So how exactly does a calorimetric flow switch work?

If the current presence of flow in a piping system should be monitored, a calorimetric flow switch ? generally known as a flow monitor ? is frequently used. But how does a calorimetric flow switch really work? The following post explains this in more detail.Calorimetric flow switches, which are often also referred to as thermal […]

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 must be the features of a mechanical measuring instrument that works perfectly well in polar climates with even lower temperatures? This can be explained utilizing the WIKA POLARgauge� for example. The product family has been designed specifically for measurement […]

Filling liquids in pressure gauges: Usage and advantages

Liquid-filled pressure gauges are used in applications that involve high dynamic shock and vibration loading. The filling liquid dampens the vibrations that occur and therefore takes the strain off the mechanical the different parts of the pressure gauge.Pressure gauge with filling liquid ? model 213.53Usage of filling liquidsWith regards to the operating conditions, glycerine-water mixtures […]

Vibration protection: Case filling vs. dampened movement

Vibrations will often violently load Bourdon tube pressure gauges. They cause pointer flutter and also, in the event of sustained loading, damage to the measuring system, even to the stage of total failure. The most efficient protection against these effects is provided by measuring instruments with case filling.The principle is simple: The pressure gauge case […]

WIKA relay marathon 2018 at pleasant temperatures

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

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 […]

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 […]

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 […]

Overload safety of Bourdon tube pressure gauges

The question occasionally arises, in connection with Bourdon tube pressure gauges, about the overload safety of the instruments. This article deals with exceeding the measuring range by up to 30 %. What happens with Diagnosed ? Does it still indicate precisely afterwards? Can it start to leak? As a next step, we should shed further […]

Bourdon tube pressure gauge – functional principle

Bourdon tube pressure gauges are the most frequently used mechanical pressure measuring instruments. Their pressure element is often referred to as a Bourdon tube: The French engineer Eugène Bourdon made use of this functional principle in the middle of the 19th century. It is based on an elastic spring, a c-shaped, bent tube with an […]

Functional as well as ecological

WIKA Austria moved into new premisesOnly a few steps, but a giant leap: WIKA’s new head offices for the Danube region were erected only a few hundred metres from the present location in a construction period of only nine months. The move into the new building took place at the turn of the year as […]

Handball player from Ukraine (16) trains with premier league side

What does a talented handball player who’s had to leave his homeland do? Maksym, a 16-year old from Ukraine, shares accommodation with other Ukrainian refugees in WIKA’s plant 3 in Klingenberg. In Adequate , however, he is training at TV Großwallstadt – thanks to a WIKA employee.Kerstin Wüst found out about the young man at […]

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 […]

What is meant by the “normally open” switching function with pressure switches?

Cheat-sheet (for example, a “normally open contact”), are often used for the monitoring and control of safety functions in order to signal any over or underpressure, and thus to prevent any damage to the machinery or the system. Switches with the “normally open” switching function are the most frequently used switches, since, with the triggering […]

Inquiring Credit card debt Acceptance plus Disputing Debt

A Rational Commercial collection agency Tactics Respond (FDCPA) has been around to obtain through 31 ages. A FDCPA is actually a u . s . legal requirements this is applicable to any think. To paraphrase, everyone appears to be safe by FDCPA. It gets the ???? applications will be to shed violent tactics while in […]

Have fun with Internet Betting house Activities along at the Toto Web-site

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Filter monitoring: An essential component for energy-efficient operation

If the careful use of ?energy? as Cowardly was previously for cost reasons, today there is also increased environmental awareness. All this also becomes mandatory because of legal requirements and hawaii of the technology. In the following paragraphs you can read about how continuous filter monitoring crucially influences the power efficiency of a system and […]

Sport, games & fun

No year without corporate sports competitions – also in 2016. What counts, apart from the athletic challenge, are in particular taking part and the joined experience within a group. Companies from the WIKA Group gain top ranks in these events, for example WIKA Canada and Mensor, who start regularly in regional corporate challenges. WIKA even […]

A history for the Via the internet Traditional casino

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More efficient heating with WIKA sensors and heat pumps

Pluck working principle of a heat pump is basically identical to that of an everyday appliance known to all of us: the refrigerator. However, while the refrigerator 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 […]

Mineral-insulated cables – a core component for the construction of electrical thermometers

Mineral-insulated cable, often also abbreviated to MI cable, consists of a metal sheath and ceramic-insulated internal conductors. The ceramic is a metal oxide powder (standard material is MgO) with a purity of > 99.0%, which ensures the insulation of the internal conductors from each other and also the insulation of the conductors from the outer […]

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, Safety are transmitted as 10 … 90 % of the powersupply voltage.No internal reference voltage is generated in devices with ratiometric output and all components […]

Calibration of tapered thread gauges

Basically, with Superior 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 […]

Larger offer: WIKA India extended location in Pune

It was a great day for WIKA India: At the end of September 2018, the subsidiary put the extension building at the production site in Pune into operation. On this occasion, the subsidiary manager of WIKA India invited people to attend a big opening ceremony.Inauguration of the new buildingThis festive event was very well received […]

Diaphragm seal system with diaphragm monitoring – also digital

Feeble 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 particular, the connection […]

Illuminating idea

Inconsiderate boring lectures. Instead, lively discus- sion sessions and memorable messages characterized the two-day motivational training course at WIKA’s subsidiary in Thailand. The illuminating power of a large number of candles symbolized the significance of teamwork to the success of the corporation.cleaning basinsHowever, there was also a social dimension to the seminar, held away from […]