Pressure transmitters are widely used for pressure measurement in liquid, gas, and process industries. Absolute pressure, negative pressure, and gauge pressure can be tested according to different models. A pressure transmitter is a precision instrument, and there are ten precautions that need to be noted and understood throughout the use of the pressure transmitter.
Firstly, before installing the pressure transmitter, check for any interference around it. If there is a hidden danger of interference, it should be eliminated as much as possible or installed away from interfering equipment.
Secondly, when wiring the pressure transmitter on site, thread the cable through the waterproof joint (accessory) or flexible pipe and tighten the sealing nut to prevent rainwater and other leakage into the transmitter housing through the cable.
Thirdly, a voltage higher than 36V cannot be used on the pressure transmitter, as it may cause damage.
Fourthly, when measuring gas pressure with a pressure transmitter, the pressure tap should be located at the top of the process pipeline, and the transmitter should also be installed on the top of the process pipeline to facilitate the accumulation of liquid into the process pipeline.
Fifth, when measuring liquid pressure, the pressure tap should be opened on the side of the process pipeline to avoid sediment accumulation.
Sixth, when measuring steam or other high-temperature media, it is necessary to connect a condenser such as a buffer tube (coil), and the working temperature of the transmitter should not exceed the limit. And the buffer tube needs to be filled with an appropriate amount of water to prevent overheating steam from coming into contact with the transmitter. And the buffer heat dissipation pipe should not leak air.
Seventh, when freezing occurs in winter, anti freezing measures must be taken for the transmitter installed outdoors to prevent the liquid in the pressure inlet from expanding due to freezing volume and causing damage to the sensor.
Eighth, it is necessary to regularly clean the installation holes to ensure their cleanliness and prevent the pressure transmitter from coming into contact with corrosive or overheated media; Regularly clean the installation holes of the pressure transmitter to ensure their cleanliness.
Ninth, the medium measured by the pressure transmitter should not freeze or freeze. Once frozen, it can easily damage the diaphragm, as the diaphragm is generally very thin.
Tenth, the pressure pipe of the pressure transmitter should be installed in a place with small temperature fluctuations.
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