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Importance and Cautions of Pressure Differential Sensor

Jun. 23, 2022

If the exhaust pipe pressure differential sensor is broken, it will cause the fault light to turn on, and the car computer will limit the engine torque. The signal collected by the engine control unit will be wrong, which will eventually lead to the abnormal operation of the engine. Pressure difference sensor has a wide range of applications in the automobile field. Today, let's take a look at how the differential pressure sensor works.

 

Working principle

The working principle of the pressure difference sensor is that the measured pressure acts directly on the diaphragm of the sensor, which makes the diaphragm form a micro-displacement proportional to the water pressure, changes the capacitance of the sensor, and detects this change with electronic circuits. and output a standard accurate measurement signal of the corresponding pressure.

 

Importance and Cautions of Pressure Differential Sensor

 

Where is the sensor installed?

1. The sensor should be installed as high as possible.

2. The sensor should be installed in a vertical direction and the pressure input port is facing down. The installation tilt angle of the pressure inlet should be less than 15 °.

3. The first installation mode of the pressure port is recommended: the maximum allowable radial installation force is 80N at the high voltage end and 40N at the low voltage end. The maximum allowable radial force of the sensor is 40N at the high pressure end and 20N at the low pressure end.

4. The sensor should be installed in the appropriate position or on the designated bracket. The sensor should be installed with M6 fastening screw.

5. The rubber hose and metal conduit connected to the sensor should drop continuously, and the U-shaped structure should not occur.

6. Ensure that no water vapor and other impurities accumulate in the sensor.

7. The electrical connection of the sensor should avoid exposure to excessive temperature.

8. The sensor should be installed in a position where dust and soil pollution can be avoided.

 

Importance and Cautions of Pressure Differential Sensor

 

What is the impact of failure?

1. When the pressure difference sensor is broken, the fault light will be on and the engine torque will be limited. In addition, if the pressure difference sensor is broken, the signal collected by the engine control unit will be wrong, and the signal error will make the calculated air intake inaccurate, resulting in abnormal engine operation.

2. The pressure difference sensor is a sensor used to accurately measure the pressure difference between two parts, which is generally used to measure the pressure difference between the front and rear of equipment or components. The measured pressure acts directly on the diaphragm of the sensor, which makes the diaphragm form a micro-displacement proportional to the water pressure, changes the capacitance of the sensor, and detects its change electronically. The integrated circuit converts and outputs the quasi-accurate measurement signal of the corresponding pressure in the standard.

3. The sensor is a kind of detection device, which can feel the accurately measured information, and can transform the felt information into electrical signals or other required forms of information output according to a certain law. in order to meet the requirements of information transmission, processing, storage, display, recording and manipulation.

 


With the rapid development of modern science and technology, the performance of pressure difference sensor is becoming more and more stable and perfect. In the future, it will have more and more functions and various pressure difference sensors will be launched, and will make more outstanding contributions to various fields. Please contact RUOXUN to find more customized vehicle accessories.

 

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