Performance Test Method of Humidity Sensitive Capacitance Sensor
In order to get meteorological humidity observation data more accurately,it is particularly important to eval-uate the performance of humidity sensitive capacitance sensor.The HMP155 humidity sensitive capacitance sensors were selected as the test object,the full range test was carried out at specified temperature points,the test data were analyzed and verified.To reduce the indirect factors and improve the accuracy of the test results,the relative humidi-ty calculation was used as the calculated value innovatively.The indication error,repeatability,hysteresis,stability were confirmed as humidity performance test indicators emphatically.Therefore the performance test method of humidity sensitive capacitance sensor is as follows:select 30％RH,50％RH,60％RH,80％RH,90％RH as the necessary test points,other test points can be selected according to the technical documents or the requirements from users.Standard values and sensor values are read every 2 min after each test point is stabilized.Each test point should read ten times and calculate the average.The indication error data which in the last three years can be used as stability data.Calculate the indication error,repeatability,hysteresis,stability based on the method to evaluate the performance.The sensor is judged to be good performance if the results are within the range of performance evaluation criteria.
万方数据
维普
