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?Qualification  certificate

Description

1. Technical basis and calibration method of the test:

GB10586-89 Damp heat test box technical conditions (for constant temperature and humidity chamber)

GB/T5170.5-96 Electrical and electronic products environmental test equipment basic parameters verification method

― Temperature and humidity test equipment (for constant temperature and humidity chamber)

GB10589-89 Low temperature test chamber technical conditions (for low temperature equipment)

GB11158-89 high temperature test box technical conditions (for high temperature equipment)

GB10592-89 High and low temperature test chamber technical conditions (for high and low temperature equipment)

GB/T5170-96 Electrical and electronic products environmental test equipment basic parameters verification method

          ― Temperature test equipment (for high temperature, low temperature, high and low temperature equipment)

1. The main measuring instrument for calibration

1. Calibration location, environmental conditions.

Location: Our factory laboratory temperature 26 °C Relative humidity 55 % R.H

Placement of each temperature probe：

upper layer:A.B.C.D

Middle layer: O

Lower layer:E.F.G.H

Humidity measurement point:

geometric center point of the workspace

                        Test Results

Table 1 Table of measured temperature values for the lowest and highest temperature detection points in each space

Temperature setting: 85°C Indication: 84.9°C～85.2°C      Temperature setting: 150°C Indication: 149.9 °C to 150.2 °C   

Table 2 Actual temperature measurement table of the lowest and highest temperature detection points in each space

Left：Temperature setting: -60°C Indication: 59.5°C～-60.5°C

Right：Temperature setting: 0°C Indication: 0.6 °C to -0.9 °C    

Table 3 The actual temperature measurement and humidity value table of each space intermediate temperature detection point

Temperature setting: 85 °C Indication: 84.7 °C ~ 85.2 °C

Humidity setting (2) 85 %RH indication: 83.3%RH ~86.4%RH(B)

Overall conclusion:

The main technical indicators of the temperature equipment meet the corresponding technical requirements, meet the factory technical standards, and are allowed to leave the factory.

Additional information:

1. When the measuring body is in the air, the machine is running normally under no-load condition.

2. The position of each temperature detection point, the upper test point is 10cm away from the top wall, the lower test point is 10cm away from the bottom wall, the upper and lower points are 10cm away from the box wall, the center point, and the humidity measurement point is the geometric center point of the box work space.

3. Each test point is the highest temperature point of the equipment, the intermediate temperature point and the lowest temperature point for performance testing. The humidity measurement is the humidity of the intermediate temperature.

4. The above measured data is the data measured after the temperature reaches the set value for the first time and stabilized for 30 minutes, and is recorded continuously for 15 times. That is, it is measured once every 2 minutes, and 15 times are measured.