Correct use of pressure transmitters

A pressure transmitter is a device that converts pressure into a pneumatic signal or an electrical signal for remote control and transmission.

It can convert the physical pressure parameters such as gas and liquid felt by the load cell sensor into a standard electrical signal (such as 4~20mADC, etc.) for power indication alarm and recorder, regulators and other secondary instruments for process measurement, indication and adjustment.

The drop in temperature will easily cause damage to the key parts of the pressure transmitter. measure.

1. Heat tracing

When heat tracing is used for heat preservation of pressure transmitters, it generally includes heat tracing at steam and electric tracing. Steam tracing refers to the method of injecting hot gas such as steam pTo insulate the pressure transmitter through the pipe connection.

When using this tracing method, attention should be paid to the length of the pipeline, not too long or too short.

After construction is complete, a pressure test must be performed before it can be used for formal instrument isolation work. In winter, it is necessary to regularly check and control the pipeline and the temperature.

Electric tracing refers to the heat emitted from the tracing fluid, which is used to supplement the heat loss of the heated pipe, so as to achieve the conservation effect of the heat from pressure emitter.

2. Setting the incubator

refers to packing the pressure transmitter with the incubator and then passing the insulation element in the process incubator for temperature control.

During this pprocess, one thing to pay attention to is that the power supply must be properly controlled to ensure that the temperature in the incubator is appropriate.

The use of electric heating cable

This is a new type of heat preservation methamphetamineod for transmitters depression. Its working principle is to wind the cable After the pressure transmitter housing is connected, it is powered, and when the current is converted into heat energy, the heat preservation effect of the pressure transmitter is achieved.

Due to the low temperature in winter, it is very easy to damage the housing of the pressure transmitter or to freeze the liquid in the pressure tap. Therefore, insulation measurements of pressure transmitters should be done well.

When the pressure transmitter is isolated, the inspection methodManual should be used as much as possible to detect the condition of the insulation in order to avoid accidents.

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