Defeat pressure spikes – prevent damage to pressure measuring instruments

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

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Temperature calibration with reference probes, dry-well calibrators and baths

Can dry-well calibrators and calibration baths be used as internal references? Temperature dry-well calibrators and baths are a practical solution for temperature calibrations. This is true both in the field and in laboratories, as they provide a free-standing, stable temperature source with a built-in platinum resistance thermometer (PRT).The PRT measures the temperature inside the dry-well …

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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. pressure gauge 10 bar of …

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Heat dissipation

?At best, a thermometer only ever measures its own temperature?. digital pressure gauge to is therefore to equalise the temperature of the sensor element compared to that of the medium to be measured. Only then will the thermometer display the specific medium temperature.Principles to be consideredThe heat always flows from the warmer body to the …

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Objectives of the VDMA specification sheet for fluid sensors, Part 1 pressure switches

As WIKA representative, I have made a contribution to the preparation of the “VDMA Specification Sheet for Fluid Sensors 24574-1 Part 1 Pressure Switches”. What were the objectives of this VDMA committee? ไดอะแฟรม : The objective of the VDMA specification is to simplify the use of pressure switches by standardising menu structure, operation and display.This …

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

ไดอะแฟรม 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. pressure gauge octa are still the most widely used technology in the industrial environment. The most important benefits of LED technology in my opinion still in …

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Pressure sensor principles – a comparison

There is no “ideal” sensor principle. Of ไดอะแฟรม ซีล 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 …

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

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

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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 prefer to talk about. Often there is uncertainty concerning the following: Which software actually should be validated? If that’s the case, who should look after it? Which requirements should be satisfied by validation? How can เกจวัดแรงดัน …

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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 …

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