Regarding the operating conditions of the low-pressure test chamber
Product name: Low-pressure test chamber
A. Requirements for the use of low-pressure test chambers
Many product test reports and field visits have reflected the impact of reduced air pressure on performance. Therefore, it is necessary to use a low-pressure test chamber, and the direct impact of the pressure drop on the product is mainly the effect of the pressure difference generated by the pressure change. This will produce a pressure on the shell of the sealed product, under the action of this pressure, the seal will be broken. However, the idea effect of the air pressure drop is that the air pressure drop is accompanied by a decrease in the atmospheric density and an increase in the average free path of the air, which sometimes greatly affects the performance of the product. Therefore, in order to test the influence of low pressure on the test sample, we will use a low-pressure test chamber for testing. So what are the requirements for using a low-voltage test chamber?
Manufacturer: Dongguan Huanyi Instrument
B. Environmental conditions
Temperature: 15℃~35℃; relative humidity: no more than 85%; atmospheric pressure: 80kPa ~ 106kPa; no strong vibration around, no corrosive gas; no direct sunlight or direct radiation from other cold or heat sources; no strong airflow around, When the surrounding air needs to be forced to flow, the air flow should not be directly blown on the box; there is no interference from the magnetic field of the control circuit of the test box around: there is no high concentration of dust and corrosive substances around.
C. power supply conditions
AC voltage: 220V±22V or 380V±38V; frequency: 50HZ±0.5HZ;
D. water supply conditions
It is advisable to use tap water or circulating water that meets the following conditions: water temperature: not less than 30°C; water pressure: 0.1MPa~0.3MPa; water quality: meets industrial water standards.
E. Test load conditions
The load of the test chamber shall meet the following conditions every week:
1. The total mass of the load is not more than 80KG per cubic meter of studio volume;
The total volume of the load is not more than 1/5 of the volume of the working chamber; on any section perpendicular to the main wind direction, the sum of the load area should not be greater than 31 of the cross-sectional area of the working chamber, and the air flow must not be blocked when the load is placed. The above are the three major types of use conditions for the use of low-pressure test chambers, which provide a reference for users with low-pressure test requirements!
