How does hydrostatic level measurement work?

When considering a new level sensor 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 […]

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Fields of application for pressure sensors 3 – Absolute pressure sensors: why is it necessary to use absolute pressure sensors or pressure transmitters

Electronic pressure sensors usually measure the change in pressure through the deformation of a diaphragm. If this diaphragm is exposed to the process pressure on one side and “vented” on the other side (and thus exposed to the ambient pressure), the deformation is reduced (because it is counterbalanced) by exactly this ambient pressure. Therefore, the

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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, diaphragm seal from a customer was abnormal, even for US standards – during a plant shutdown at the Freeport (Texas) site, it was urgently necessary to replace two flanged thermowells with our Flex-O multi-point system. The size needed was 37 metres!

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Dual range pistons for pressure calibration

Dual piston deadweight testers can greatly enhance a lab?s ability to calibrate wide pressure ranges with the best accuracy. With เพรสเชอร์เกิจ and devices under test (DUTs) which have a broad measuring range, calibration can be quite a lengthy process, as you need to change pistons among test points so as to calibrate its entire range.However,

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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? Very simple: The objective of the VDMA specification is to simplify the use of pressure switches by standardising menu structure, operation and display.

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

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

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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

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Pressure switches with IP65 and IP67 ingress protection

An important specification for industrial measuring instruments generally, and pressure sensors in particular, 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 pointed out to us. These data sheets declare that these instruments meet both

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