Many instruments have been invented to measure pressure, and each instrument has its
very own set of pro’s and con’s, advantages and disadvantages when is comes to Pressure range, sensitivity, dynamic response and cost. But one thing reamins the same- calibration for pressure instruments is necessary to ensure a proper resullts.
Many techniques and pressure instruments have been developed for the measurement of pressure and vacuum. Some of these pressure instruments would include a manometer, which usually measures pressures near to atmospheric, or a vacuum gauge which is used to measure the pressure in a vacuum- both high and low.
In terms of pressure measurment instruments, there are a few terms you need to know:
- Absolute pressure is zero-referenced against a perfect vacuum, so it is equal to gauge pressure plus atmospheric pressure.
- Gauge pressure is zero-referenced against ambient air pressure, so it is equal to absolute pressure minus atmospheric pressure.
- Differential pressure is the difference in pressure between two points.
e2b calibration provides expert calibration and repair services covering a broad range of test and measurement instrumentation including calibration of pressure instruments. All calibrations are performed using standards traceable to the National Institute of Standards and Technology (NIST).