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Know-how

Low Pressure Gauges: For Very Low and Vacuum Pressure Measurements

Hardy Orzikowski | Know-how, Pressure

To accurately measure pressure below 10 psi (690 mbar), mechanical gauges use a capsule element. Capsule gauges are found in applications that operate in a vacuum or pressures as low as 1" water column.   In most Bourdon tube pressure gauges , the range …

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Hydrogen Vehicles’ Pressure Sensors Are Key to Safety

Jeff Placek | Know-how, Pressure

The hydrogen tanks of fuel cell electric vehicles are under very high pressure. For safety and reliability, the pressure sensors and pressure transmitters in FCEVs must be able to withstand corrosion, vibration and shock, and hydrogen permeation/embrittlement.  …

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Hydrogen Mobility: The Future of Clean Engines Meets Today’s Standards

Jeff Placek | Know-how

For powering on-road and off-road electric vehicles, hydrogen fuel cells hold key advantages over batteries. To ensure safety, governments and standardizing bodies around the world continue to establish and update guidelines, codes, and regulations for hydrogen …

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Introduction to Differential Pressure Measurement

Hardy Orzikowski | Know-how, Pressure
Differential pressure measurement

By measuring differential pressure, users are able to easily and accurately monitor filter conditions, liquid levels in closed tanks, liquid flow rates inside a pipe, and even the output torque of hydraulic motors. There are three methods of measuring pressure. The …

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Frequently Asked Questions about Gall-Resistant Fittings

Patrick McGrath | Know-how, Pressure
Metal nuts

Fittings that flake silver are a major concern in ultra-high purity (UHP) processes. That’s why WIKA has developed gall-resistant nuts made of UNS S21800 stainless steel, a chromium–iron alloy with inherent lubricity and self-mating characteristics to reduce the …

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Welcome to the WIKA blog

In our WIKA US blog you can expect many interesting articles on pressure, temperature, level and flow measurement, and also on the subject of calibration technology. Furthermore, there are various insights into the world of the WIKA group of companies – seen from different angles.

Most-read articles
  • 8 Common Reasons For Pressure Gauge Failure

  • Pressure Gauge Know-How: Difference Between NPT and G Connections

  • Pt100 and Pt1000 Sensors: Important Facts and Differences


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