Calibration of the Full Span of a Negative Pressure Digital Gauge in Cities Above The Mean Sea Level

Mayckol J Morales C, Jorge E Gomez H

Abstract

In Colombia, there are many industries and technological centers located in cities several meters above the sea level (> 1 000 m), this condition restrict the scope for the negative pressure gauge calibrations to the local atmospheric pressure, as no all accredited laboratories have the negative pressure calibration branch, the costumer may need to send the device to a city where could not be possible to reach the device full span, typically (~-101 kPa to 0 kPa). But for a a digital negative pressure gauge there is an alternative way, by using absolute pressure gauges to reach a pressure higher than the local pressure and zeroing the device under calibration and then covering the desired calibration span. In this work we show the results of calibrate a digital negative pressure gauge by the classical and the proposed method.

Keywords

digital pressure gauge, negative gauge, indirect calibration

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IMEKO-TC16-2017-003.pdf

DOI

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IMEKO TC

TC16 - Pressure and Vacuum Measurement

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