What is a meter and secondary instrument - Solutions - Huaqiang Electronic Network

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In the automatic detection and automatic adjustment system, the instrument first contacts the measured parameters (such as pressure, differential pressure, liquid level, flow rate, temperature, etc.), and converts the measured parameters into a side signal or standard signal, and then according to the detection. The requirements of the adjustment system are sent to the relevant unit for display or adjustment.

There are many types of instruments at one time, such as pressure transmitters, liquid level transmitters, temperature transmitters, target flow transmitters, remote rotor flow meters, and elliptical gear flow meters. In recent years, various special primary instruments have also appeared, such as Hall pressure transmitters, Karman vortex flow transmitters, etc.

Most of the instruments are scattered and installed on site. In order to facilitate on-site observation, some primary instruments also have a mechanism for displaying the measured parameters, but most of them convert the measured parameters into standard output signals and send them to the display instrument. The display instrument indicates, records, alarms or accumulates, so the display The instrument is also called a secondary instrument relative to the primary instrument, and it is generally installed on the instrument panel of the control room. When using, consider the proper cooperation of the primary instrument and the secondary instrument.