In compressor pressure sensor applications, if the output signal of the transmitter is unstable, it can be said that the pressure source is the problem. The pressure source itself is an unstable pressure, most likely because the instrument or pressure sensor is not very resistant to interference, the sensor itself vibrates badly, or the sensor is damaged.
Sensors are used in all types of machinery. For example, Hall sensors, temperature sensors, and pressure sensors have been used in various fields. Next, the sensor expert network will take you to understand what a pressure sensor is and the failure performance of the pressure sensor of the air compressor. Let's take a look.
The principle of a pressure sensor.
A pressure sensor is a device or device that can sense the pressure signal and convert the pressure signal into a usable output electrical signal according to a certain law. A pressure sensor usually consists of a pressure-sensitive element and a signal processing unit. According to different types of test pressure, pressure sensors can be divided into gauge pressure sensors, differential pressure sensors and absolute pressure sensors. Pressure sensor is a commonly used sensor in industrial practice, which is widely used in a variety of industrial automatic control environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automation, aerospace, petrochemical, oil wells, electric power, ships, machine tools, pipelines and many other industries. There are also medical pressure sensors.
Fault behavior of air compressor pressure sensors
1.The pressure can go up, but the transmitter output can't go up
In this case, you should first check whether the pressure interface is leaking or blocked, if it is confirmed, then check whether the wiring method is wrong and check the power supply, if the power supply is normal, you should simply pressurize to see if the output has changed, or check whether the zero position of the sensor has an output, if there is no change, the sensor has been damaged, otherwise the instrument is damaged or other links of the whole system.
2.Problems with pressure sensor seals
Pressurization, the output of the transmitter does not change, and the output of the pressurized transmitter changes suddenly, and the zero position of the transmitter cannot be returned after the pressure is relieved, which is likely to be a problem with the sealing ring of the pressure sensor. According to the sensor expert network, the common situation is that due to the specification of the sealing ring, the sealing ring is compressed into the sensor pressure port after the sensor is tightened, thus blocking the sensor.
3.The output signal of the transmitter is unstable
This malfunction can certainly be a problem with the stressor. The pressure source itself is an unstable pressure, most likely because the meter or pressure sensor is not very resistant to interference, the sensor itself is vibrating badly, or the sensor is damaged.
In air compressors, pressure sensors are used, but during the operation of the machine, the pressure sensor may fail. The fault of the air compressor pressure sensor is that the output signal is unstable.