User-Friendly Design
- The new CFC-free design keeps you at the forefront of healthy living;
- The multi-segment programmable PID controller uses balanced temperature and humidity regulation for accurate control with low fluctuation;
- The imported mirror-finished 304 stainless steel chamber has rounded corners and freely removable shelf supports for easy cleaning;
- A Φ50mm test port is supplied as standard on the left side for convenient operation and testing;
Quality Assurance
- User settings are automatically stored during a sudden power failure, and the original program resumes when power is restored;
- An internationally branded compressor and circulating fan, together with efficient, low-energy environmentally friendly refrigerant (R134a), promote energy savings;
- The unique circulating air duct system ensures uniform chamber temperature and humidity;
Imported Humidity Sensor
- A humidity sensor suitable for high-temperature operation eliminates frequent replacement of wet-bulb wicks for more convenient use;
Energy-Saving Refrigeration Control Technology
- Automatic cold-balance PID electronic expansion valve regulation provides high efficiency, low energy consumption, low temperature fluctuation and energy savings. It effectively prevents evaporator frosting and temperature/humidity changes caused by defrosting. Overall energy savings exceed 30% compared with conventional refrigeration technology;
Color Touchscreen Controller
- The large touchscreen is easy to operate and program;
- The controller interface offers Chinese and English options, and real-time operating curves can be displayed on screen;
- Capacity for 100 programs, 1000 segments and 999 cycle steps, with a maximum segment time setting of 99 hours 59 minutes;
- After data and test conditions are entered, screen locking prevents shutdown caused by accidental touch;
- Automatic P.I.D calculation immediately corrects changing temperature and humidity conditions for more accurate, stable control;
- An RS-232 or RS-485 communication interface enables computer-based programming, test monitoring and start-up/shutdown control (optional);
Safety Functions
- The independent temperature-limit alarm system automatically interrupts operation above the limit and gives audible and visual warnings to ensure safe experiments and prevent accidents;
- High, low and overtemperature alarms, compressor overheating/overcurrent/overload protection, fan overheating protection and low-water protection;
- Password protection of the control panel prevents incorrect operation by unauthorized personnel;
Convenient Data Processing (Optional)
- A printer or 485 communication interface can be connected for computer display and printing of temperature, humidity and time curves, providing reliable support for test data storage and playback;
Tiered Access Management (Optional)
- Multiple assignable accounts allow controller permissions to be allocated to administrator, operator and guest accounts according to equipment management needs. The touchscreen supports Chinese and English input so operators can log in using their actual names. The system also records detailed operating logs for each user, with a log query function for maintenance management and audit trails;
Technical Specifications
| Technical Specification / Model | BH-60CL BH-60CA |
BH-120CL BH-120CA |
BH-250CL BH-250CA |
BH-500CL BH-500CA |
BH-800CL BH-800CA |
|---|---|---|---|---|---|
| Temperature Control Range | CL:-10~100°C CA:-20~100°C | ||||
| Capacity | 72L | 120L | 248L | 495L | 786L |
| Temperature Fluctuation / Uniformity | High temperature: ±0.5°C; low temperature: ±1°C | ||||
| Temperature Precision | 0.1°C | ||||
| Humidity Range / Deviation | 10%~95%RH/ ±3%RH | ||||
| Sensor Type | Temperature: PT100 Humidity: imported capacitive humidity sensor | ||||
| Applicable Standards | General Standards | ||||
| Refrigeration System | One original imported hermetically sealed compressor | ||||
| Number of Shelves | 2 | 2 | 3 | 4 | 4 |
| Chamber Dimensions WxDxH (mm) | 400x400x450 | 500x400x600 | 550x600x750 | 670x725x1020 | 700x860x1250 |
| Exterior Dimensions WxDxH (mm) | 590x885x1380 | 690x905x1530 | 740x1105x1680 | 850x1095x1935 | 860x1340x1995 |
| Supply Voltage | AC220V/50HZ | AC380V/50HZ | |||
| Product Power | 2250W | 3650W | 3950W | 4150W | 4550W |
| Safety Devices | Compressor overheating protection, fan overheating protection, overtemperature protection, compressor overpressure protection, overload protection, low-water protection and a wired alarm system. | ||||
Optional Accessories
1. Built-in printer / printer
2. RS485 interface and communication software
3. Wireless alarm system (SMS alarm system)






