论文部分内容阅读
在红外气体分析器中，微机测控系统对改善仪器性能、提高仪器精度都具有重要作用。分析了传感器的非线性误差和温度效应误差对测量精度的影响，提出了三点定标修正接收器非线性误差，用二次拟合多项式补偿温度效应误差的方法，从而使传感器非线性误差减少到2％以下，温度每10℃变化，温度漂移小于满全程浓度的4‰[1]
In infrared gas analyzer, microcomputer control system to improve the performance of the instrument, improve the accuracy of the instrument has an important role. The influence of sensor nonlinearity error and temperature effect error on measurement accuracy is analyzed. A three-point calibration method is proposed to correct the receiver nonlinear error and the quadratic fitting polynomial to compensate the temperature effect error, so that the sensor nonlinearity error is reduced To 2%, the temperature changes every 10 ℃, the temperature drift is less than 4 ‰ of the full range of concentration [1]