1.Filter sensor has the characteristics of weather-proof, it mainly works in the condition of engine vibration, oil vapor, dust and bad working condition

2.The performace index of filter sensor accords to the standard, the key points is to measure the accuary and reliability, or the sensor would have error and then cause the engine broken

3.Filter sensor can reflect the vechile operation failure directly and it can reduce the exhaust discharge in the largest extent and save oil

1. The sensitivity of the filter sensor is mainly decided by the chip itself. Electromechanical coupling factor is higher, the sensitivity og the filter sensor is higher, conversly the filter sensitivity is lower.

2. The working frequency of the filter sensor, piezoelectric crystal plate resonance frequency. When reaches to the alternating voltage frequency and equals to the resonance frequency of the crystal plate. When the output power reaches the highest, the sensitivity of the filter sensor reaches the highest.

3.The working temperature of the filter sensor: as the piezoelectric material distance is usually higher, especially ultrasonic probe service power is samll, so its working temperature is low,. The temperature of the ultrasonic probe which is used in medical treatment is high, so it needs special  refrigeration device.