What is a self-recording pressure gauge?

A self-recording pressure gauge is a device for measuring the pressure of gas and liquid passing through a pipe. Is used to detect. There are other manometers for measuring pressure, but while self-recording pressure gauges that record absolute values ​​are used to judge abnormalities in pipes, etc., manometers measure the difference in pressure between two points. Due to its nature, it is used for function measurement such as clean room and air conditioning.

Application of self-recording pressure gauge

The most popular use of self-recording pressure gauges is the airtightness test of piping. The pressure generator and the self-recording pressure gauge are connected via the pipe to be inspected, and the substance for applying the specified pressure is supplied. If the recorded value is kept within the specified range for a certain period of time, it is judged that there is no gas or liquid leakage, and the result is passed. The recorded pressure needs to be corrected because it is affected by temperature changes, etc., but recently, there are products that output the result of temperature correction, mainly for digital methods.

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