对于内燃机排气管来说,气体瞬时温度有时高达1000 K 以上,因此,由高温引起的压力传感器零漂以及非线性不得不予以考虑。带有适当长的测量通道,可以减轻气体的直接热冲击,并能使传感器与炽热的管壁保持一定的距离。但传感器通道往往使测量结果发生高频振荡,如果过长还会使结果失 For the exhaust pipe of an internal combustion engine, the instantaneous temperature of the gas is sometimes as high as 1000 K or above. Therefore, the zero drift of the pressure sensor caused by the high temperature and the nonlinearity have to be taken into account. With a suitably long measuring channel, you can reduce the direct thermal shock of the gas and keep the sensor at a distance from the hot tube wall. But the sensor channel often makes the measurement result of high-frequency oscillation, if too long will result in loss