The performance and index requirements of the high and low temperature and low pressure test chamber are as follows:
Temperature grade: high temperature 30 ℃, 40 ℃, 55 ℃, 70 ℃, 85 ℃, 100 ℃, 125 ℃, 155 ℃, 175 ℃, low temperature 5 ℃, -5 ℃, -25 ℃, -30 ℃, -40 ℃ , -55 ℃, -65 ℃.
Temperature deviation: ± ℃ during normal pressure temperature test; ± 3 ℃ when temperature and low pressure comprehensive test is ≤100 ℃, ± 5 ℃ when> 100 ℃ ～ 200 ℃
Temperature gradient: ≤2 ℃
Temperature fluctuation: ≤1.0 ℃
The difference between the temperature of the working chamber wall and the temperature of the working space: at high temperature level, it should not be higher than 3% of the temperature of the high and low temperature and low pressure test chamber; at low temperature level, it should not exceed 8% of the temperature of the test chamber.
Air pressure level: 84kPa, 79.5 kPa, 70 kPa, 61.5 kPa, 55 kPa, 40 kPa, 25 kPa, 15 kPa, 8 kPa, 4 kPa, 2 kPa, 1 kPa.
Air pressure deviation: ± 2 kPa for 84kPa ～ 40 kPa; ± 0.5 kPa for 25kPa ～ 40kPa; ± 0.1kPa for ≤2kPa.
Rising and cooling rate: Calculated every 5 minutes, the average rate is not more than 1 ℃ / min; or specify the fastest rising and cooling time.
Pressure change rate: ≤10 ℃ kPa
Wind speed: ≤1m / s or adjustable.
Note: If the air pressure is lower than 10 kPa during the low temperature and low pressure test, or if the air pressure is lower than 4 kPa during the high temperature and low pressure test, the temperature deviation can be appropriately relaxed; the manufacturer shall specify the fastest heating time and Cooling time; the manufacturer shall specify the adjustable range of wind speed in the product technical document.
LCD Hair Dryer,Digital Hair Dryers,lcd display hair dryer,Hair Dryers
Zhejiang Hisun Electrical Appliance Co.,Ltd , https://www.cn-hisun.com