Application Of Absolute Pressure Gauge

  •   When selecting a pressure measuring instrument, in addition to the pressure range, connection type, and output signal, other standards need to be considered. Choosing between measuring absolute pressure and measuring gauge pressure may affect the quality and accuracy of the process.

      Absolute pressure gauge and gauge pressure measurement

      The pressure is usually measured by quantifying the deformation of the sensing element, where one side of the sensing element is in contact with the process medium and the other side is exposed to the reference pressure. If the reference pressure is ambient pressure, the measurement is called gauge pressure. If the inside of the sensor is in a vacuum state, the measured value is called absolute pressure. The gauge pressure is zero relative to the ambient air pressure, and the absolute pressure is zero relative to the vacuum. As a result, absolute pressure is equal to gauge pressure plus atmospheric pressure.

      Application of absolute pressure gauge

      If the pressure to be measured or controlled is not affected by changes in atmospheric pressure, for example, when measuring hydraulic pressure, air pressure, or liquid level in an open tank, you need to use a gauge pressure sensor. For example, if you want to measure the pressure that is affected by atmospheric pressure-in closed systems or closed vessels, when evaluating altitude in aviation applications, or when you need to measure atmospheric pressure itself-for example, you need an absolute pressure gauge. Absolute pressure gauges are commonly used in research and scientific laboratories. In these studies, fluctuations in atmospheric pressure can become a problem; in the aviation industry, accurate measurement is essential for determining altitude. The food packaging industry widely uses absolute pressure gauges to evaluate vacuum independently of atmospheric pressure. This is a vital application because only very good vacuum packaging can ensure food quality within a certain period of time. Use a reliable and accurate Air manometer suitable for your application conditions to ensure correct measurement and process integrity. WIKA Wika 516 series absolute pressure gauges are suitable for clean and dry gaseous media and will not corrode copper alloys and aluminum. Stainless Steel An accurate absolute pressure gauge that meets your application conditions will ensure correct measurement and process integrity. WIKA Wika 516 series absolute pressure gauges are suitable for clean and dry gaseous media and will not corrode copper alloys and aluminum. Stainless Steel An accurate absolute pressure gauge that meets your application conditions will ensure correct measurement and process integrity. WIKA Wika 516 series absolute pressure gauges are suitable for clean and dry gaseous media and will not corrode copper alloys and aluminum. The stainless steel 532 series absolute pressure gauge is more suitable for gaseous and liquid corrosive media.