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Gas measurement:
When measuring the gas flow, the pressure tap should be opened on the
top or side of the process piping. And the transmitter should be mounted
beside or above the process piping so that the accumulated liquid can easily
flow into the process piping.
Steam measurement:
When measuring the steam flow, the pressure tap should be opened on
the side of the process piping and the transmitter is installed below the
pressure tap so that the pressure tube can be filled with the collected cold
liquid. It should be noted that when measuring steam or other high temperature
media, the temperature should not be higher than the limiting operating
temperature of the transmitter. When the measured medium is steam, the
pressure tube should be filled with water to prevent the steam from directly
contacting the transmitter so that the volume change of the transmitter is
negligible when the transmitter is working, and there is no need to install a
condensing tank.
Level measurement:
The differential pressure transmitter used to measure the liquid level is
actually the static head that measures the liquid column. This pressure is
determined by the level and the specific gravity of the liquid, and it’s equal to
the liquid level above the pressure tap multiply by the specific gravity of the
liquid, regardless of the volume or shape of the container.
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Liquid level measurement of open containers
When measuring the liquid level of the open container, the transmitter is
mounted close to the bottom of the container to measure the pressure
corresponding to the liquid level above the transmitter. The pressure of liquid
level in the container acts on the high-pressure side of the transmitter while the
