Programmable Temperature and Humidity Testing Machine is designed for testing the capability of heat-endurance, cold-endurance, dryness-endurance, and humidity-endurance, suitable for quality control of the industries of electron, electrical equipment, vehicle, metal, foodstuffs, chemistry, building materials, luggage, adhesion tape, printing, packaging, etc.
Features:：
　　 1、The separation of humidifier circuit from electric circuit improves safety and protects the circuit against the leakage of water supply line.
　　 2、Available in Chinese and English LCD touch screen, easy operation and program.
　　 3、Able to display the relative date and information of the whole operating system in running mode, graphic display. Precautions, maintenance and troubleshooting appear on the screen instantly.
　　 4、The Sirocco fan motor provides greater cyclic airflow to avoid dead corner in the chamber so as to obtain an uniform distribution of temperature and humidity.
　　 5、The system of heating up, heating down, dehumidifying, and humidifying can be operated independently so as to reduce the cost of testing, extend the operating life of the machine and decrease the failure rate.
　　 6、 Water Supply adopts automatic watering System, Circulating water supply together with water filter.
Touch screen functions：
　1、High sensible touch screen, easy to operate.
　2、Automatic save in real time, display PV and SP of temperature and humidity, saved curves, group curve and working status via the MV curve.
　3、Can display the number, segment, remaining time and cycle times of the current working program.
　4、Time accumulating function.
　5、Can display temperature`s set value and value via a curve.
　6、Can edit temperature, humidity and time up to 4 sets in one page.
　7、Can dynamically display the program action.
　8、16-segment backlight adjustment.
　9、Can set screensaver time or manually disable screensaver.
　10、Standby function, can save power.
　11、The display device is separated from the controller.
Standards implemented and met：
　GB-2423.1-89（IEC68-2-1）Low temperature test Aa and Ab；
　GB-2423.2-89（IEC68-2-2）Higt temperature test Aa and Ab；
　GBJ150.3(MIL-STD-810D)；GJB150.4(MIL-STD-810D)；
　GB2423.3-93（IEC68-2-3）；Constant moisture-heat tast Ca；
　GB2423.4-93（IEC68-2-30）Mmoisture-heat test；
　GJB150.9-93（MIL-STD-810D）humiture combined circulation test；
Model and Temperature Range:
　DH-HP80A　　-40℃ to 150℃
　DH-HP80B　　-60℃ to 150℃
　DH-HP80C　　-20℃ to 150℃
　DH-HP80D　　-70℃ to 150℃
　DH-HP80E　　0℃ to 150℃
　etc.