High and low temperature test chamber specification inspection conditions and inspection instruments
The high-low temperature test chamber specification inspection conditions include: climate conditions, power conditions, water conditions, and other conditions, the following are introduced one by one:
1. Climatic conditions: temperature 15 ～ 35 ℃, relative humidity not more than 85% RH, air pressure 80kPa ～ 106kPa (Note: For large equipment or for some reason, the equipment cannot be tested under the above conditions, the actual climate should be recorded In the inspection report, when the relevant standard requires strict control of environmental conditions, it shall be separately specified in the standard).
2. Power supply condition: Just meet the power requirements of the equipment. The domestic standard power supply is AC220V ± 10% 50Hz, AC380V ± 10% 50Hz;
3. Water conditions: meet the water requirements related to the equipment, mainly tap water, purified water (just reach the drinking standard), distilled water, etc .;
4. Other conditions: There is no strong impact, vibration, electromagnetic field and corrosive gas around the equipment. The equipment should avoid direct sunlight or other cold and heat sources;
High and low temperature test chamber specification inspection instrument: the measurement system used has an expanded uncertainty (K = 2) of no more than one-third of the allowable deviation of the measured parameter. The secondary instrument and the primary instrument should be inspected in one week, normal The equipment used should be inspected once a year at most. After repairing or replacing important parts of the equipment (referring to the parts that have a direct impact on the performance of the equipment), they should be used after passing the inspection. The unsealed should be inspected before reuse.
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