Constant temperature and humidity testing machine, also known as environmental testing machine, test a variety of materials, heat, cold resistance, dry and wet performance. Suitable for electronic, electrical, food, vehicles, metals, chemicals, building materials factory use. Meet the following criteria: GB2423.1-89 cryogenic test methods, GB2423.2-89 high temperature test methods, GB2423-93 test D6 Damp heat test method, IEC68-2-30 test methods changed. Control mode and features: Balancing thermostat humidity control system (BTHC), with PID controlled SSR, the heated humidification system is equal to the amount of heat and moisture loss, so the use of long-term stability. Studio Size: 80L, 120L, 150L, ??225L, 408L, 800L, 1000L, or customized according to requirements, walk-in constant temperature and humidity chamber up to 100 cubic meters. Temperature range: low temperature 0 ℃ - -70 ℃, the lowest up to -150 ℃; high temperature 150 ℃, up to 200 ℃. Humidity range: 20-98% RH, can be customized according to the requirements of 10-98% RH Temperature fluctuation: ± 0.5 ℃ temperature uniformity: ± 2 ℃ heating rate:> 3 ℃ / min cooling rate:> 1 ℃ / min fastest up to 5 ℃ / min humidity fluctuation: ± 0.5% RH humidity uniformity: ± 2.5% RH inside the box material: SUS # 304 stainless steel mirror Carton Material: SUS # 304 stainless steel oven has rippled height The adjustable stainless steel shelves; bottom of the fuselage or the installation of polyurethane wheels universal activity level height adjustable foot cups water; automatic water pump; two vacuum window glass to increase, electric automatic defrost protection devices: the zero-crossing thyristor power controller, heating air burning protection switch, compressor overpressure protection switch, compressor overload current protection switch, phase protection switch, no fuse overload protection, water protection switch tanks, heated humidification fast insurance major Configuration: Imported French "Taikang" brand hermetic compressors, South Korea imported TEMI850N touchscreen controllers, control systems and refrigeration systems are used mainly in Italy, Denmark or Japan parts.