High and low temperature environmental chamber in a high rate of conversion of low temperature

　　Lin Frequency Instrument: Original Source: high and low temperature environmental chambers in the rate of high and low temperature conversion of the original author
　　when high and low temperature environmental chamber testing the middle of the high and low temperature, the conversion has a crucial effect at the time of operation, which are high and low temperature environmental chamber operation the key rationale belongs, but what kinds of high conversion efficiency is considered good it?

　　ultra-low temperature heat chamber temperature raised temperature and speed reduction measure to be carried out under full load preconditions raised temperature and temperature reduction rate: Average change in per 5min rate of 5 ± 1 ℃ / min or high environmental chamber symmetry transition speed. Test cases included in the work of the interior space geometry Zhongyangzhengfu point.
　　The key consists of the following two of the more critical processes:
　　1, high and low temperature environmental chamber in the tester adjustable temperature range, low temperature tolerance choose Save low isothermal temperature, high temperature high raised temperature tolerance temperature.
　　2, open the cold source, so that the indoor temperature is lowered tester desuperheater low temperature, at least not relief, After 3h, the raised temperature was raised to a high temperature, at least not fluctuation, 3h after the temperature dropped to a low temperature reduction. Provide gentle desuperheating period, record 1 per minute until the whole test process is completed.
　　The key to grasp the high and low temperature environmental chambers running regarded as critical.