Various pressure sensor repairs.


The pressure sensor has a wide range of influences in life, and in the process of application, it also brings convenience to the task. In order to ensure the long-term application of the pressure sensor, in the process of application, we must pay attention to some common maintenance methods of the pressure sensor. The following 8 points are summarized here:

1. Avoid the accumulation of garbage in the conduit and the contact between the sensor and the corrosive or overheated medium.
2. When measuring the gas pressure, the pressure taking port should be opened at the top of the process pipeline, and the sensor should also be installed on the upper part of the process pipeline, so that the accumulated liquid can be easily injected into the process pipeline.
3. When measuring the liquid pressure, the pressure tap should be opened on the front of the process pipeline to prevent the accumulation of slag.
4. The pressure guiding pipe should be installed in a place where the temperature is stable.
5. When measuring the liquid pressure, the installation position of the sensor should prevent the impact of the liquid (water hammer phenomenon), so as to prevent the sensor from being damaged by overpressure.
6. When freezing occurs in summer, the sensor installed outdoors must adopt anti-freezing measures to prevent the liquid in the pressure inlet from shrinking due to the freezing volume, resulting in loss of the sensor.
7. When wiring, pass the cable through the waterproof tube or coiled tube and tighten the sealing nut to prevent rainwater from leaking into the transmitter housing through the cable.
8. When measuring steam or other low-temperature media, it is necessary to add a condenser such as a buffer tube (coil), and the working temperature of the sensor should not exceed the limit.
It is very helpful for us to understand the above-mentioned normal protection methods for pressure sensors, ensuring that our pressure sensors can be used for a longer time and their performance is more stable.
pressure sensor
When servicing the pressure sensor:
Compare whether the pressure value measured by the pressure sensor is consistent with the value measured by the pressure gauge. If they are inconsistent, it means that there is an abnormality in the sensor or electronic control.
Measure the VDD and GND terminals of the electronically controlled pressure sensor to see if the electronic control has a +5V voltage output. If yes, it means that the electronic control is normal and the sensor can be detected.
Check whether the connection line of the sensor is firm and whether there is an open circuit in the middle. ,
After the sensor link is normal, if there is still abnormality, the sensor body must be replaced.
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