This part of the national standard 5170 specifies the inspection items of the damp heat test equipment, the main instruments and requirements for inspection, the test load, the test conditions, the test methods, the data processing results and test results, and the inspection cycle.
The constant temperature and humidity test chamber inspection items are: humidity, relative humidity deviation; temperature, relative humidity fluctuation; temperature, relative humidity uniformity; average temperature change rate every 5 minutes; wind speed; temperature rise and fall characteristics; temperature, relative humidity indication error; Temperature, relative humidity overshoot; temperature, relative humidity overshoot recovery time and noise.
The main instruments for constant temperature and humidity test chamber inspection:
Temperature measuring instrument: It is a widely used detecting device in industrial production;
Humidity measuring instrument: a physical property analysis instrument for measuring gas humidity;
Wind speed measuring instrument: It is a tester with multi-function professional measurement and alarm function;
Noise measuring instruments: There are many types of noise measuring instruments. The most basic and most commonly used are sound level meters and spectrum analyzers.
Number and location of test calibration points: According to the size of the test equipment, the workspace is divided into upper, middle and lower layers. The middle layer passes through the geometric center point of the workspace, and a certain number of temperature and relative humidity sensors are placed in the specified In position, the sensor should not be exposed to direct heat from a source of heat.
Test the constant temperature and humidity test chamber: Install the temperature and relative humidity measurement sensor according to the specified position. Under no-load and room temperature conditions, the anemometer's sensor is placed at each measurement point, and the wind speed at each point is measured, and the maximum value is taken as the wind speed at the measurement point.
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