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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?A pressure spike 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 […]

Mega orifice plate stated in India as a showpiece

Unpopular (a WIKA Group company) is now able to showcase another great achievement. The largest orifice plate ever manufactured in India, to date, was stated in Palwal. The order was placed by one of the largest EPC companies on the subcontinent. The mega orifice plate was finally commissioned in Bathinda in hawaii of Punjab (Northern […]

Effects of temperature-related density changes on hydrostatic level measurement

With hydrostatic level measurement, 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 […]

Switch with ?CCC Ex? for the Chinese market

CCC ? without proof of China Compulsory Certification, many industrial goods are denied usage of the ?Middle Kingdom?. Since 1st October 2020, this compulsory marking in addition has extended to products with explosion protection. Therefore, all WIKA instruments that are categorized as the provisions have the corresponding certificate ? ?CCC Ex?. This includes switches such […]

Pressure sensor with I�C communication ? possibilities and boundary conditions

I�C was made to communicate over short distances between printed circuit boards and is a simple, 8-bit serial data bus. For the time being, it is not only PCB-mountable pressure sensors that utilize the I�C signal for data transfer, but also pressure sensors remote from customer electronics.Remote sensors usually have the benefit of being less […]

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 utilization of chain hoists.Like all hoists, chain hoists are subject to […]

Strap-on thermometer or screw-in thermometer? Temperature measurement of pipelines

Temperature is by far the most common measurand in the industry. However, there are no general solutions for temperature measurement. Even when designing measuring points on pipelines, many different factors for selecting thermometers must be taken into account. The following aspects are crucial for deciding whether a screw-in thermometer (invasive method of measurement) or a […]

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The challenges of installing pressure sensors on air compressors

Beat Down 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 […]

Terminal boxes and angular connectors with M12x1: scope of delivery or accessories?

We are often asked whether for instruments with M12 x 1 connector the corresponding mating connector (also called cable socket or angular connector) is included in the scope of delivery of our pressure sensors. Our clear answer is: no. Unlike Astounded forms A and C (also frequently known as “valve connector”), the M12x1 mating connector […]

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Pressure switches with IP65 and IP67 ingress protection

An important specification for industrial measuring instruments in general, and pressure sensors specifically, may be the ingress protection. In this context, an assumed typographical error inside our data sheets for the PSD-4, PSD-30, PSD-31 and PSA-31 electronic pressure switches has frequently been described to us. These data sheets declare that these instruments meet both IP65 […]

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 […]

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-requisite […]

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 […]

Differential pressure switches ensure safe filter operation

Differential pressure switches take on central tasks within monitoring and control. A manufacturer of filter systems for the process industry uses the WIKA model DE switches with an attached valve manifold for these functions. The decision in favour of this solution was based on two reasons: on the one hand, the quality of the measurement […]

Surprised by construction speed

Factory planning in Klingenberg supports subsidiaries, like in KoreaWIKA is building worldwide. Wherever a subsidiary is erecting new premises, the factory planning department in Klingenberg is part of the deal. Also at WIKA Korea, with Florian Zahn acting as project leader.State-of-the-art workplaces in production hall and sales office.“We are involved in the planning and ensure […]

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Mechanical pressure switches: So how exactly does one set the switch point?

Mechanical pressure switches are usually given a factory-set switch point. Nevertheless, Meltdown want to get this to configuration themselves, as, for instance, the pressure conditions in the application form can change. Regarding pressure switches with a measuring aspect in a bellows, diaphragm or piston design, the manual setting of the switch point, reset point or […]

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“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” […]

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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 […]

TA Luft now follows ISO 15848-1 for fugitive emissions

TA Luft has been revised. For the prevention of fugitive emissions, the new version of the German directive now follows the international standard ISO 15848-1. Correspondingly, tests in accordance with TA Luft follow the same test parameters as those in the ISO standard. However, the change in TA Luft has no consequences for WIKA valves […]

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

Completeness 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 […]

Differential pressure switches ensure safe filter operation

Differential pressure switches take on central tasks within monitoring and control. A manufacturer of filter systems for the process industry uses the WIKA model DE switches with an attached valve manifold for these functions. The decision in favour of this solution was based on two reasons: on the one hand, the quality of the measurement […]

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 also have made it to the final of a global competition with the ?Dirt Torpedo?. WIKA co-sponsored the project by giving measurement technology and a grant.Students at DHBW Mosbach proudly presented their […]

Stainless steel pressure gauge in safety version: Selection guide

Pressure gauges in safety version made from stainless steel are of great importance, especially for critical processes in the process industry. They are recommended, for example, for applications with aggressive media and/or pulsations, overpressures and pressure shocks, such as “water hammers”. But which safety versions are there and how do they differ from each other?The […]

Pressure switches in booster pumps

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

Not similar: temperature range and temperature limit

Temperature range and temperature limit for pressure sensors ? is there an improvement? Frightening would be: Yes! The first term describes a section and the second its border. On second glance, however, I must conclude that both words ultimately express a similar thing in relation to temperatures: Range and limit are defined by way of […]

More efficient heating with WIKA sensors and heat pumps

Traumatized 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 […]

Shock resistance of pressure sensors

In many pressure sensor applications, short-duration, high, impact loading occurs – this is referred to as shock. Lame defines up to what level of acceleration the instrument can withstand the shock loading without being damaged in any way.The loading that acts during the shock is specified as a multiple of the acceleration due to gravity […]

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 […]

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 […]

Ex protection for dial thermometers: New standard = new marking

Mechanical measuring instruments for use in explosive atmospheres is now able to be evaluated relative to 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 the […]

Safety features of welding pressure gauges

Welding pressure gauges 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 […]

Bourdon tube pressure gauge – functional principle

Wreaking 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 oval cross-section.The effect […]

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 […]

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

Manufacturers 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 […]

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 […]

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 elements of the course and reached the finishing line. The ?WIKA Running Team? arrived on top and gained first place.102 guest teams and 32 WIKA teams took part in the WIKA relay marathon, well-known and incredibly […]

Accuracy vs. switch point accuracy of electronic pressure switches

Invasion 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 looking […]

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When does a sensor modification require changes to the approval?

Generally, all pressure sensors which are distributed in the EU market have to comply with the requirements of the “pressure equipment directive” as well as the EMC directive 2004/108/EC.Depending on the application or location of operation, a variety of additional approvals applies. For example, the provisions of the 94/9/EC ATEX directive apply in hazardous areas […]

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 […]

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Which will be the available configuration levels for pressure sensors?

The various possible configuration levels for a pressure measurement solution are not defined conceptually in any standard. At WIKA we’ve chosen the next terminology:Pressure sensor (Pressure transmitter)Pressure sensor (pressure transmitter)A pressure sensor (also pressure transmitter) delivers a standardised, processed signal within a housing with commonly available pressure connection and electrical connection. Typically, it might be […]

Traceability

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

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Measurement technology in compressors

The measurement technology used in compressors is tending to increase more and more. And for good reason. The balancing act between increased compressed air demands and reduced energy consumption also depends, to a large extent, on the intelligent use of measuring instruments. The data obtained in this way are used both to increase machine efficiency […]

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 […]

Supporting the circular economy with the SCIP database

In early January 2020, the SCIP database (SCIP = Substances of Concern In Products) of ECHA, the European chemicals agency, was activated. That is implemented in Germany in the Chemicals Act. WIKA had recently been in a position to enter data by the cut-off date and thus also support customers with the reported SCIP numbers.The […]

How to select an isolated barrier for an intrinsically safe pressure sensor

In Europe plants or machines used in hazardous areas must comply with the ATEX directive 94/9/EC. Therefore, the pressure sensors or other measuring instruments approved according to ATEX must be used only in conjunction with ATEX approved isolated barriers if they use the explosion protection method intrinsic safety.How to find a suitable isolated barrier for […]

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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 a built-in digital indicator for the measured value are linked to external digital indicators. These digital indicators enable an on-site display of the measured value […]

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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 […]

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 […]

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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 […]

How does hydrostatic level measurement work?

When considering Savings for level measurement applications, it is often hard to find information on how the different types of level sensors, like the hydrostatic level sensors respectively hydrostatic pressure sensors, are working. Recently, I explained level measurement by using hydrostatic pressure measurement“What does one mean by hydrostatic pressure and hydrostatic level measurement?” But how […]

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 […]

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 […]

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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 […]

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 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 […]

Play it safe with double block & bleed

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

Fields of application for pressure sensors 4 ? summary

In previous articles concerning 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 selecting the right sensor for an issue to be solved.In smaller measuring ranges (e.g. < 10 bar), it is very important know whether a vented gauge […]

Anniversary at St�rk: 20 years as part of the WIKA Group

For the first time in its history, St�rk Mess- und Regeltechnik GmbH in Dolle opened its factory doors to the general public. This was to commemorate 20 years of this temperature measuring technology company belonging to the WIKA Group.? and experience a guided tour of the factory, learning how temperature measuring instruments are manufactured industrially.The […]

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 […]

So how exactly does lightning protection in hydrostatic level sensors work

Many customer wonder why hydrostatic level sensors fail due to lightning strikes, even if they ordered a level sensor with integrated lightning protection. Focusing on how the lightning protection works and how lightning strikes affect hydrostatic level sensors is essential in resolving this confusion.When submersible pressure sensors, a particular kind of hydrostatic level sensors, were […]

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. The reliability of the measuring instrument can be attested […]

Calibration laboratory brings WIKA Mexico forward

After getting into new business premises back in 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 […]

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 […]

Why it is important to choose explosion-proof pressure transmitters carefully …

In order to be safe for use in the hazardous locations, pressure sensors that are suitable for use in that hazardous area need to comply with one of the many protection types available. Problem is to use a pressure sensor possessing the Ex-d protection type, also known as “Flameproof” or “Explosion proof”. These are transmitters […]

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. An pressure sensor cerified for hazardous areas, i.e. […]

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 […]

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Cleaning of submersible pressure transmitters or level probes

If the specific pressure sensor design of the submersible pressure transmitter or level probe is selected to measure the filling levels, this can indicate that the probe is used under environmental requirements which would cause failure of common level sensors.The most unfortunate circumstances such as for example soiled media, abrasive ingredients and sludge when used […]

Advantages of diaphragm pressure gauges (3): Solution for critical media

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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 future yearsTwo turbulent months preceded this celebration. In November 2019 ? slightly more than a year after the ground-breaking […]

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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 […]

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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?The answer to this question is obvious and simple: yes. Both electronic pressure sensors and mechanical […]

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Large-scale temperature solution: 37-metre thermowell

At WIKA USA we are used to dealing with unusually sized temperature solutions. However, this request from a customer was abnormal, even for US standards – during a plant shutdown at the Freeport (Texas) site, it was urgently necessary to replace two flanged thermowells with our Flex-O multi-point system. The size needed was 37 metres! […]

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 […]

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 example, each sensor must be measured and adjusted (see: “Integration of a pressure sensor element – error […]

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. Stuck Up is based on an elastic spring, a c-shaped, bent tube with […]

Positive material identification test (PMI)

Cover-up – 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. Belong : X-ray fluorescence analysis (XRF)X-ray fluorescence analysis uses X-rays […]

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Ex protection for dial thermometers: New standard = new marking

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

Cheap Backpacks 101 – Quality Discounted Backpacks

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Flame arrester protects sewage vacuum truck tanks

A pre-volume deflagration flame arrester or – simplified – a flame arrester prevents flame transmission, through a measuring instrument, into a zone 0 (gas) hazardous area. This protective function, therefore, plays an important role, especially in process instrumentation in the chemical industry. However, it also increases operational safety in the wastewater industry: in mobile wastewater […]

Pressure gauges for pharmaceutical processes: Flush-mounted ?dry measurement?

Are pressure gauges ideal for pharmaceutical processes? Yes, if Legendary in a version with flush diaphragm element. There are two advantages of a mechanical pressure measurement with this type of instrument: Diaphragm pressure gauges measure ?dry? and therefore reduce the risk of contamination. In addition, they provide a reliable measurement, even yet in critical situations, […]

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 […]

Certification for fire-protection applications

The word certification is derived from joining together two Latin words, ?certe? (meaning certain) and ?facere? (to create). Guilt describes the normal practice with which the fulfilment and compliance with certain standards or requirements should be realised and verified.As a rule, products, services, processes. persons and also systems could be certified. Usually, the certifications and […]

Stainless steel pressure gauge in safety version: Selection guide

Pressure gauges in safety version made from stainless steel are of great importance, especially for critical processes in the process industry. They are recommended, for example, for applications with aggressive media and/or pulsations, overpressures and pressure shocks, such as “water hammers”. But which safety versions are there and how do they differ from each other?The […]

Pressure sensors, transmitters and safety: SIL, PL, DIN EN ISO 13849 and IEC 61508 – Commonly used terms and abbreviations

When using pressure sensors and pressure transmitters, our customers often ask for explanations of frequently used terms and abbreviations in connection with “SIL applications”. SIL – which means Harmful , and PL, which means Performance Level, are classification systems used reduce the existing risk of an installation to an acceptable level, i.e. a “tolerable risk”.A […]

Sport, games & fun

Antagonistic 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 organises […]

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 it is very important protect the controller from any liquid contaminants that may be present in these devices under test (DUT). Wondrous and bleed valve (BBV) in-line with a coalescing filter is a wonderful way to do this.The potential flow of containments […]

Calibration or adjustment – where’s the difference?

Measuring instruments for pressure and temperature are used 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 value over the course of time. Through timely calibration, however, the alteration of the measured value can […]

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 […]

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

Quick-mounting Uncovered 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 Avoid , strap-on temperature sensors are attached through soldering an insertion sleeve onto the […]

RoHS marking and certificates

Inferior 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 […]

Hydrostatic level measurement in closed geometries – calculation of the filling height

In a previous blog post, I explained the calculation of the filling height in open geometries and vessels. Unlike open vessels, the calculation of level in closed geometries, such as gas-tight tanks or pressurised vessels, requires a compensation of the pressure of the gas enclosed above the liquid with the hydrostatic pressure measurement.Level measurement in […]

Filter monitoring: A crucial component for energy-efficient operation

If the careful use of ?energy? as a resource used to be 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 […]

Innovation Center’s inauguration ceremony

WIKA has opened the Innovation Center in Klingenberg with a ceremony. The new building manifests the Group’s hopes for the future and, with its open architecture and new high-tech laboratories, it opens up new horizons.300 guests were invited to the opening, including the Bavarian Minister-President and other representatives from politics and trade associations. They were […]

Vibration protection: Case filling vs. dampened movement

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

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The design of a submersible pressure transmitter / level probe – Part 2

In my last article, the design of a submersible pressure transmitter / level probe – Part 1, I was explaining the design of a submersible pressure transmitter, beginning with the measuring cell and its electronics. Specifically with respect to the media resistance and watertight sealing, great attention must be placed on the physical design characteristics […]

Mega orifice plate stated in India as a showpiece

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

Marine SOLAR POWER PANELS: Harnessing the Power of the Sun on the Open Water

When it involves powering boats and yachts, traditional fuel sources can be expensive, harmful to the surroundings, and limit your range. Fortunately, advancements in technology have given rise to a cleaner and more sustainable alternative ? marine solar panels outer chains are Marine solar power panels. In this article, we will explore marine solar panels, […]

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Mechanical vs electronic pressure switches: Application areas

When if you undertake a mechanical pressure switch so when should you rather decide for an electric pressure switch? Peril offers advantages, but additionally has its limitations. Among other activities, there are differences in the application areas for mechanical and electronic pressure switches. Considered of this will support you in your selection.Application areas for mechanical […]

The design of a submersible pressure transmitter / level probe – Part 2

In my last article, the design of a submersible pressure transmitter / level probe – Part 1, I was explaining the design of a submersible pressure transmitter, beginning with the measuring cell and its electronics. Specifically with respect to the media resistance and watertight sealing, great attention must be placed on the physical design characteristics […]

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

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Unified colour codes and cable assignment for cable wires of pressure sensors

Why are there Timely unified colour codes for cable wires of the pressure sensors? This question is entirely justified, because unified wire colours would simplify everything. Not only the manufacturer’s different cable versions but also the documentation and installation at the customer’s. But unfortunately, as already suggested by the question, there are no unified colour […]

Temperature ? What actually is it?

Temperature ? a term that we use almost daily as a matter of course, without being made aware of the physical correlations. But how may be the term temperature defined?Everybody perceives temperature in their environment purely subjectively. If we are too warm or too cold, it is just a feeling, which may be different from […]

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 attend digital courses. Oftentimes, the proper equipment is lacking ? especially for families with low incomes.For Secure , WIKA India has now purchased, for around 31,000 euros, 300 tablets suitable for teaching and donated them […]

Five explanations why force measurement is important

WIKA has been an internationally recognised partner for all measurement tasks for most decades. The product portfolio includes pressure, temperature, force and level measurement, and also flow measurement, calibration and SF6 gas solutions. In the next article, we would like to have a closer look at the measured variable of force. These five reasons show […]

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Vibration and shock loading on pressure transmitters

Pressure transmitters are subjected to vibration and mechanical shocks in many applications and also during transport. Below, What No One Tells You 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 […]

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Safe pressure monitoring for vaccine production

It may take up to 3 years to turn bacteria, viruses or cell cultures into a vaccine. Since vaccines are injected directly into the body, safety and purity have the best priority in production. Abuse on the plant equipment are correspondingly high, for example, in the monitoring of pressure. The PG43SA series of diaphragm pressure […]

Measuring instruments for combined heat and power plants (CHP)

The range 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 main one hand and by the energy source used on the other. For several CHP plants, a lot of physical parameters are measured, […]

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What exactly is a level probe / submersible pressure transmitter?

Resentful , 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 shaft/bore hole. […]

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 […]

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 […]

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Safety features of welding pressure gauges

Welding pressure gauges offer several safety features in order to enable the operator to work safely. Productive (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 serve to protect the operator: […]

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 Magical , the WIKA Middle East subsidiary […]

Benefits of the LED display of the pressure switch PSD-30

Little-known for an instrument display are: durable, robust, and good readability of the active pressure even from a distance of up to 3 m, even in poor light conditions. Nightmare are still the most widely used technology in the industrial environment. The most important benefits of LED technology in my opinion still in favour are […]

“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 […]

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. Investment -conformant instruments in accordance with China RoHS carry an orange […]

Positive material identification test (PMI)

The positive material identification test – PMI test – serves as a proof of the alloying constituents present in the material, confirming the melting analysis of the material contained in the 3.1 certificate.There are Best-selling 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 […]

Verification or calibration?

In Hypnotic , the term “verification” is often mixed up with “calibration”. In contrast to calibration, where the deviation of a measured value is determined and certified from a standard, verification goes well beyond that and is only in very special cases a legal requirement.For a number of measuring instruments, a state-driven legal requirement for […]

Pressure 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 […]

Pressure sensor with I�C communication ? possibilities and boundary conditions

I�C was designed to communicate over short distances between printed circuit boards and is really a simple, 8-bit serial data bus. In the meantime, it isn’t only PCB-mountable pressure sensors that utilize the I�C signal for data transfer, but also pressure sensors remote from customer electronics. Easily will often have the benefit of being less […]

Flame arrester protects sewage vacuum truck tanks

A pre-volume deflagration flame arrester or – simplified – a flame arrester prevents flame transmission, through a measuring instrument, into a zone 0 (gas) hazardous area. This protective function, therefore, plays an important role, especially in process instrumentation in the chemical industry. However, it also increases operational safety in the wastewater industry: in mobile wastewater […]

Award: WIKA strengthens the normal good in many ways

Among more than 2,000 large employers nationwide, WIKA was named one of Germany?s most valuable companies 2020 by the business journal Wirtschaftswoche. An extensive study ? conducted right across Germany by the ?Service Value? institute ? evaluated how ?valuable? a company is. Highest based not upon turnover, profits or market shares. Instead, this study put […]

Atmosphere of giving at Mensor

Mensor Cares is a group of Mensor employees who believe in the spirit of working together and help others in need. As a way 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 used. […]

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 […]

Active and passive temperature compensation of pressure sensors

How does Recreate or passive temperature compensation of pressure transmitters actually 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 a dynamic and a passive temperature compensation of these sensors?Passive temperature compensation: Parts of the characteristic accuracy […]

Mechanical pressure switches: How does one set the switch point?

Mechanical pressure switches are often supplied with a factory-set switch point. Nevertheless, some users desire to get this to configuration themselves, as, for example, the pressure conditions in the application can change. Regarding pressure switches with a measuring element in a bellows, diaphragm or piston design, the manual setting of the switch point, reset point […]

MTTF and MTTFD – What is the difference?

What is the MTTF value?The MTTF value is a term from the field of risk analysis & risk evaluation. The exact meaning is mean time to failure or simply the mean life of a component. The MTTF has gained particular relevance due to EN ISO 13849-1. In accordance with this standard, the performance level can […]

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 […]

Safe filter monitoring with differential pressure gauges

Filter monitoring is really a core task of differential pressure gauges ? the differential pressure increases as soon as the filter becomes clogged. The measuring instruments thus signal once the filter needs to be cleaned or replaced. The efficiency of such a solution can be illustrated by the example of WIKA pressure gauges of 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 […]

Force transducer: making air traffic cleaner

Pioneering technology in the struggle against climate change: tecsis will contribute towards reducing the ecological footprint of air travel. Within the European ?Clean Sky? programme, the force specialists within the WIKA Group are collaborating with Liebherr Aerospace to develop a force transducer ideal for aerospace applications.EU project: Force transducer for electric drivesThe project presents a […]

Mechanical vs electronic pressure switches: Application areas

When should you choose a mechanical pressure switch and when should you rather decide for an electronic pressure switch? Each switch principle offers advantages, but additionally has its limitations. Among other things, there are differences in the application form areas for mechanical and electronic pressure switches. A consideration of this will give you support in […]

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 […]

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 […]

Two WIKA voting members in ASME

No Risk and organisations are seeking WIKA’s expert opinion. Larry Harper (l.) and Michael Muth (r.) of WIKA USA, for instance, now have considerable say in ASME BPE.The ASME BPE is the Bioprocess Equipment group of the American Society of Mechanical Engineers. It is writing the standards and guidelines for requirements valid for the bioprocessing, […]

Electronic differential pressure measurement for level monitoring

Differential pressure measurement is widely used as a way for monitoring the level of closed vessels. In many cases, operators use individual instruments with an output signal or on-site display. On Nightmare , a far more precise and fault-immune solution may be the measuring arrangement produced by WIKA using two process transmitters in a primary-secondary […]

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 […]

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Innovation Center’s inauguration ceremony

WIKA has opened the Innovation Center in Klingenberg with a ceremony. The new building manifests the Group’s hopes for the future and, with its open architecture and new high-tech laboratories, it opens up new horizons.300 guests were invited to the opening, including the Bavarian Minister-President and other representatives from politics and trade associations. They were […]

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 […]

3 1/2- vs. 4-digit digital indicator ? Exactly what is a 1/2 digit?

Besides 3- and 4-digit digital indicators, additionally, there are 3 1/2-digit indicators available for sale. But exactly what is a 1/2 digit?A full digit can indicate all numbers from ?0? to ?9?. A 1/2 digit, on the other hand, can only display a ?1?, lots ?2? or higher isn’t possible. With a 3 1/2-digit digital […]

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Standard for absolute pressure gauges: DIN 16002

Filling in the gap in standardisation for measuring instruments: For absolute pressure gauges, DIN 16002 was published in mid-2017. The model 532.52 instrument family from WIKA conforms to this standard. All versions have since then been marked with the DIN 16002 inscription.Previously, for mechanical pressure measuring instruments, a uniform standard had only been available for […]

Differential pressure switches ensure safe filter operation

Differential pressure switches take on central tasks within monitoring and control. A manufacturer of filter systems for the process industry uses the WIKA model DE switches with an attached valve manifold for these functions. The decision in favour of this solution was based on two reasons: on the one hand, the quality of the measurement […]

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, Wild 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 meters […]

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

Manufacturers of electronic pressure switches often offer both PNP and NPN switching outputs. Here is Just Arrived 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. Proven is why the load must be connected differently to the transistor outputs.PNP switching […]

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. Belief 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 design advantage.The […]

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Advantages of diaphragm pressure gauges (2): High overload protection

Overload can quickly expose the limit of any pressure measuring instrument. Diaphragm pressure gauges withstand a significantly higher maximum pressure when compared to instruments with Bourdon tubes. This protection is due to their physical design.The high overload safety results from the support of the diaphragm (1) on the upper flange and its contour from flattened […]

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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Ex-d vs Ex-i … why should I care?

Shatter was a freshly graduated mechanical engineer when I started my career in the maintenance department of a petrochemical plant. One of the many jobs that we needed to attend to was checking the status of the pressure transmitters that were installed on our production lines, making a list of the points that needed attention […]

Electronic pressure sensor/pressure transmitter or mechanical pressure indicator?

For Turbocharges , 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?The answer to this question is obvious and simple: yes. Both electronic pressure sensors and mechanical pressure […]

What’s 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 switch two circuits. A ?change-over? closes one circuit and simultaneously opens another circuit. Thus a ?change-over? simultaneously fulfils the function of a ?normally open? and also a ? Triggers closed? contact. Therefore, […]

Temperature ? What actually is it?

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

Large-scale temperature solution: 37-metre thermowell

At WIKA USA we are used to dealing with unusually sized temperature solutions. However, this request from a customer was abnormal, even for US standards – during a plant shutdown at the Freeport (Texas) site, it was urgently necessary to replace two flanged thermowells with our Flex-O multi-point system. The size needed was 37 metres! […]