Scope of Application

【Operating Instructions】

**YS751T-80/800/1000 Constant Temperature and Humidity Test Chamber****【Scope of Application】**This series of constant temperature and humidity test chambers is mainly used tosimulate the harsh high‑temperature, low‑temperature, or damp‑heat environments thatelectronic i

**YS751T-80/800/1000 Constant Temperature and Humidity Test Chamber**

**【Scope of Application】**  

This series of constant temperature and humidity test chambers is mainly used to 

simulate the harsh high‑temperature, low‑temperature, or damp‑heat environments that 

electronic instruments, new materials, electrical products, vehicles, metals, electronic 

products, aerospace materials, etc., may encounter during transportation, storage, 

and use. It is also used to test the resistance of materials, components, or equipment 

to high temperature, low temperature, and damp‑heat conditions under alternating

 temperature and humidity environments, as well as to assess potential damage and lifespan reduction.

**【Instrument Features】**  

1. Uses a highly stable platinum PT‑100 temperature sensor.  

2. LCD touch screen with Chinese/English display.  

3. Equipped with multi‑group PID control functions.  

4. Provides RS‑232C/485C interface for computer connection and control.  

5. Capable of simulating different environmental conditions such as high temperature/high humidity, 

high temperature/low humidity, low temperature/high humidity, high temperature, and low temperature.  

6. Features an easy‑to‑operate and learn high‑accuracy programmable control and 

set‑point control system, ensuring reliable test performance.

**【Technical Parameters】**  

1. **Temperature/Humidity Controller:** LED display  

2. **Resolution:** 0.1°C, 1%, PID control  

3. **Temperature range:** 20°C to 150°C  

4. **Humidity range:** 20% to 98% RH  

5. **Temperature/humidity accuracy:** ±0.5°C, ±2.5% RH  

6. **Heating time:** –20°C to 100°C — approximately 35 minutes  

7. **Cooling time:** 20°C to –20°C — approximately 40 minutes  

8. **Inner chamber dimensions:** 40 × 50 × 40 cm  

9. **Outer dimensions:** 92 × 160 × 87 cm  

10. **Inner chamber material:** SUS#304 mirror‑finished stainless steel  

11. **Outer chamber material:** SUS#304 stainless steel  

12. **Insulation material:** Rigid polyurethane foam  

13. **Refrigeration system:** Single‑stage air‑cooled, fully hermetic compressor (imported from

 Europe/America), environmentally friendly refrigerant  

14. **Protection devices:** Compressor overload protection switch, refrigerant high‑pressure 

protection switch, ceramic fuse, water tray low‑water protection switch, electromagnetic

 switch, dry‑heating protection switch, alarm  

15. **Models:** YS751T‑80, YS751T‑150, YS751T‑225, YS751T‑408, YS751T‑800, YS751T‑1000  

16. **Internal volume (L):** 80, 150, 225, 408, 800, 1000  

17. **Internal dimensions H × W × D (cm):** 50×40×40, 60×50×50, 75×50×60, 85×60×80, 100×100×80, 100×100×100  

18. **Temperature/humidity control method:** Balanced Temperature and Humidity Control (BTHC) system  

19. **Operating environment:** +5°C to +35°C  

20. **Heater:** Nickel‑chromium alloy wire heater  

21. **Humidifier:** Surface evaporation type  

22. **Fan:** Centrifugal fan  

23. **Airflow mode:** Broadband forced airflow circulation (upper outlet, lower inlet)  

24. **Condensation method:** Air‑cooled or water‑cooled  

25. **Accessories:** Observation window, 2 adjustable shelves, interior lamp  

26. **Weight:** Approximately 95 kg  

27. **Power supply:** Single phase, AC 220V ±10%, 50/60 Hz