What factors should be taken into account when using compact pressure transmitters?

Publish Time: 2024-06-24
When using a compact pressure transmitter, you need to pay attention to the following key factors to ensure its normal operation and extend its service life:

Voltage limit:

Do not use a voltage higher than 36V on the compact pressure transmitter, otherwise it may cause damage to the device.

Avoid collision and contact with hard objects:

Do not touch the diaphragm of the pressure transmitter with hard objects to avoid damaging the diaphragm.

Media conditions:

The measured medium cannot freeze, otherwise the isolation diaphragm of the sensor element is easily damaged, resulting in damage to the transmitter.

When measuring steam or other high-temperature media, ensure that the temperature does not exceed the limit temperature of the transmitter when used. If the limit temperature is exceeded, a heat sink is required.

Installation and connection:

When measuring steam or other high-temperature media, a heat sink is required to connect the transmitter and the pipeline together, and the pressure on the pipeline is transmitted to the transmitter. An appropriate amount of water should be injected into the heat sink to prevent the superheated steam from directly contacting the transmitter and damaging the sensor.

During the pressure transmission process, the connection between the transmitter and the heat dissipation pipe must not leak; be careful when opening the valve to avoid the measured medium directly impacting and damaging the sensor diaphragm; the pipeline must be kept unobstructed to prevent the sediment in the pipeline from popping out and damaging the sensor diaphragm.

Maintenance and care:

Regularly check and clean the housing and connection parts of the pressure transmitter to keep them unobstructed and dry. Wipe the transmitter with a clean cloth to avoid dust and foreign matter from contaminating the sensor.

The output signal of the pressure transmitter may offset and drift, and needs to be calibrated regularly. First, the transmitter needs to be zero-calibrated and full-scale calibrated to accurately measure the pressure signal.

Environment and safety:

Check whether there is signal interference around the pressure transmitter and try to eliminate it. If it cannot be avoided, you can try to connect the sensor shielding wire to the metal housing to enhance the anti-interference ability.

When performing maintenance, avoid impact or collision of the transmitter to avoid damage to the sensor and circuit board. At the same time, when replacing the power line, make sure that the power is turned off to avoid the risk of electric shock.

Precautions for use:

When freezing occurs in winter, antifreeze measures must be taken for transmitters installed outdoors to prevent the liquid in the pressure inlet from expanding due to freezing and causing damage to the sensor.

When measuring liquid pressure, the installation location of the transmitter should avoid liquid impact (water hammer phenomenon) to prevent overpressure damage to the sensor.

The pressure pipe should be installed in a place with small temperature fluctuations to prevent residue from depositing in the pipe.

When using a compact pressure transmitter, it is necessary to comprehensively consider factors such as voltage, medium conditions, installation and connection, maintenance and care, environment and safety, and precautions for use to ensure its normal operation and extend its service life.

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