Do pressure transmitters belong to electric remote pressure gauges?
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Do pressure transmitters belong to electric remote pressure gauges?
A pressure transmitter is a specialized device that converts pressure into a standard signal for transmission to secondary instruments, while an electric remote pressure gauge adds an electrical conversion module to a conventional pressure gauge in order to send the pressure signal to secondary instruments. Their structures are different. In the past, in order to meet market demands, pressure gauge manufacturers expanded the functions of these devices, giving rise to electric remote transmission pressure gauges; however, today large-scale production facilities rarely use such electric remote transmission pressure gauges.
The original poster’s description is not very accurate; a pressure transmitter is not a simple pressure gauge. It belongs to the category of pressure measurement instruments, specifically a transduction unit that converts the signals from sensing elements into signals suitable for display on a gauge. The output signal is usually in the form of an electrical current, and it has the capability for remote transmission.
This name for LZ is long outdated.
Electro-transmitted pressure gauges are basically no longer in use; most of them simply add an electrical contact that serves only as a switch. The transmitter, on the other hand, has a full-range transmission capability.
An electric remote transmission pressure gauge likely refers to a resistive remote transmission pressure gauge – that is, a gauge with a dial for displaying pressure, which outputs a resistance value (it can also output 4–20mA or voltage). Such gauges are quite widely used, especially in water treatment plants. A pressure transmitter, on the other hand, is a specialized device that converts pressure into a standard signal for use in secondary instruments; the two operate on different principles and belong to different categories.
Most people do not use electric remote pressure gauges due to their poor reliability. With the advancement of pressure transmitter technology and falling prices, pressure gauges are now rarely used by companies that are of a decent standard.