Environmental testing method for low air pressure altitude testing machine
【Dongguan Huanyi Instrument Technology Co., Ltd.】
Meet: GJ B 150. 2-86 Military Equipment Environmental Test Method
Direct selling manufacturer: Dongguan Huanyi Instrument Technology Co., Ltd.
A. Low air pressure (altitude) testing machine
It is suitable for the equipment used as cargo transported in the pressurized cabin on the plane, and the equipment installed and working in high altitude areas.
B. Test conditions
2.1 Test pressure
2.1.1 Storage test: 57kPa (4550m)
2.1.2 Working test: 57kPa (4550m)
2.1.3 Rapid decompression test: 18.8kPa (12200m)
2.2 Test duration
2.2.1 Storage test: not less than 1h
2.2.2 Work test: the time required to complete the performance test
2.2.3 Rapid combat pressure test: not less than 10nin
2.3 Pressure change rate
2.3.1 Storage test: not more than 10kPa/mnin
2.3.2 Working test: not more than 10k Pa/min
2.3.3 Rapid decompression test: a. Decompression time: no more than 15s, b. Pressure recovery speed: no more than 10kPa/mnin
3.1 Storage test
The storage test is applicable to equipment stored in high altitude areas or transported in the state of transportation and/or storage structure.
3.1.1 Pretreatment
Make the test sample reach a stable temperature under the specified normal test atmospheric conditions.
3.1.2 Initial inspection
Carry out in accordance with the regulations in the relevant standards or technical conditions.
4.1 Test
4.1.2 Make the test sample in the storage and (or) transportation structure state, according to the standard in the low-pressure box. During the entire test period, the temperature in the low-pressure box is maintained at the normal test atmospheric temperature.
4.1.3 Reduce the pressure in the box to 57kPa at a rate not greater than 10kPa/min, and keep this pressure not less than 1h.
4.1.4 Restore the pressure in the box to the normal test atmospheric pressure at a rate not greater than 10kPa/min.
5.1 Recovery
The test sample is taken out of the box, and the temperature is stable under normal test atmospheric conditions.
C. Dongguan Huanyi Instrument Technology Co., Ltd.
