First, the power supply has two domestic voltages, namely 220V for civil power and 380V for industrial use. The voltage of standard test chamber is 380V. If there is no 380V voltage on the customer side and the temperature is below -40 degrees, 220V can be used. Voltage, other models of test box voltage requirements can be changed directly to the manufacturer (contact phone) if you want to change. The manufacturer recommends to choose a 380V four-phase power interface, because the power consumption of the entire laboratory is relatively stable, and it is also beneficial to the life of the device itself.
Second, air-cooled and water-cooled selection of constant temperature and humidity test chambers are generally air-cooled, the use of water-cooled is generally a large-scale constant temperature and humidity test room or a large box of rapid rise and fall test chamber, the general thermal shock test chamber is water-cooled More.
Third, the safety protection system selection, especially the reliability test, the test period is long, the test object is sometimes a high value military product. During the test, the test personnel often have to operate or test around the site, so the environmental test equipment is required. It must have the characteristics of safe operation, convenient operation, reliable use and long working life to ensure the normal operation of the test itself. The various protection, warning measures and safety interlocking devices of the test equipment should be perfect and reliable to ensure the safety and reliability of the test personnel, the tested products and the test equipment itself.
Fourth, the choice of studio size Constant temperature and humidity test chamber studio size is determined according to the size of the test workpiece size, in general, the size is selected based on the test of the largest workpiece volume accounted for one-third of the test chamber volume , can not exceed two-thirds, the test box in the constant temperature and humidity test, the studio reserves the front and rear, left and right, up and down each size of about 5CM, to ensure that the test system's circulation system can work normally, thus ensuring the temperature of the test box at work Uniformity and volatility.
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