We all know that the manufacturer will say the conditions of use when buying any items. For example, the seller who buys a down jacket will say that this cannot be hand-washed and should be placed in a dry place. When buying appliances, this thing is not water-filled. It depends on whether the voltage is stable. Are there any dangers such as peeling and leakage of electric wires? Similarly, when we purchase test instruments, we use them as a kind of scientific experimental testing instruments. In the high and low temperature test chamber standards, we clearly stipulate the use conditions of the test chamber: high and low temperature test chamber standards Limited use conditions
The first is the environmental conditions for placement:
Temperature: 15 ℃ ~ 35 ℃;
Relative humidity: not more than 85%;
Atmospheric pressure: 80kPa ~ 106kPa;
No strong vibrations around;
No direct sunlight or direct radiation from other heat sources;
No strong airflow around: When the surrounding air needs to be forced to flow, the airflow should not be blown directly onto the box;
There is no strong electromagnetic field around;
There is no high concentration of dust and corrosive substances around.
Second is the power supply / water supply conditions:
Power supply conditions:
Voltage: 220V ± 22V or 380V ± 38V;
Frequency: 50Hz ± 0.5Hz.
Water supply conditions:
Tap water or circulating water that meets the following conditions can be used:
Water temperature: not higher than 30 ℃;
Water pressure: 0.1MPa ~ 0.3MPa;
Water quality: meets industrial water standards.
Finally, the load conditions (load refers to load bearing and placement space):
The load of the test chamber should also meet the following conditions:
The total mass of the load should not exceed 80kg per cubic meter of working empty volume;
The total volume of the load is not greater than 1/5 of the studio volume;
On any cross-section perpendicular to the prevailing wind direction, the sum of the load areas should not be greater than 1/3 of the cross-sectional area of ​​the working room at that location, and the flow of airflow should not be blocked when the load is placed.
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