Inclination sensor accuracy calibration test

1. Ambient temperature ：

normal atmospheric temperature （25±15℃）, The specified measuring temperature of the tested part shall prevail .

2. Product status ：

Normal working condition .

3. Experimental method

According to the provisions in the relevant documents of the test article , It is installed on the high-precision turntable with the theoretical output as the zero degree position , Adjust the turntable , Make the output value of inclination sensor zero , At this time, clear the angle value displayed on the turntable . Within the measuring range of the inclination sensor , Select at least five measurement points , And record the readings of the inclination sensor at the test point . In all test points , From a small angle （ Or negative angle ） To a large angle （ Or positive angle ） Measure... In turn , Is the positive stroke , Otherwise, it is the reverse stroke , Each sensor measures a positive or negative stroke , Of all test points , The maximum absolute value of error is determined as accuracy .

4. Be careful

①. When the product output beats irregularly, it is electrically closed , Change to manual test , Reduce external interference

②. Install according to the installation method specified in the relevant documents of the test object , The installation surface is horizontal with the horizontal plane / vertical /

Other angles are sensor zero （ Such as ：ZCT210M-JHY、ZCT190K-LAR-A-2807）.

③. Test time ≥ After zero temperature drift 12 Hours

④. Accuracy ≥0.02°, After zero temperature drift 12 You can test the accuracy by yourself in hours ; accuracy

degree ＜0.02°, After zero temperature drift 12 After the confirmation of the R & D Engineer in the small age, the accuracy of the test .

Definition ： The consistency between the measured result and the measured true value .

explain : The change of the minimum input that makes the output change meaningfully at any point within the operating range .

Indicator using unit : degree （°）degree.

Scope of indicators :

The use accuracy of the inclination sensor output in the form of digital interface ;

The inclination sensor output in the direct display mode of the display screen uses the indication error .

Reference standard ：GB/T 7665-2005

Judging standard

During the experiment, the tested part can meet the specified requirements （ The test result is less than or equal to the specified value ）, There is no wrong action and damage .