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| Brand | All Precision Instrument |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Model | BHG-9102 |
| Internal Dimensions (D×W×H) | 400 × 450 × 550 mm |
| Temperature Range | −40 °C to +150 °C (unloaded) |
| Humidity Range | 20–98 %RH (no active thermal load) |
| Temperature Uniformity | ±2 °C (unloaded) |
| Temperature Fluctuation | ≤±0.5 °C (unloaded) |
| Humidity Fluctuation | ≤±3 %RH |
| Heating Rate | ≤40 min (20 °C to 100 °C) |
| Cooling Rate | ≤30 min (20 °C to −20 °C) |
| Control Accuracy | ±2 °C / ±3 %RH |
| Sensor Type | PT100 armored resistance thermometers (temperature & humidity), dry-wet bulb principle for RH calculation |
| Refrigeration System | Single-stage, imported Tecumseh (France) compressor, R404A refrigerant (DuPont), Danfoss (Denmark) expansion valve, Parker (USA) filter-drier, Castel (Italy) solenoid valve |
| Humidification System | Built-in stainless steel water tank with Taiwan-imported electronic level controller, visual glass water-level indicator |
| Controller | Programmable high-resolution color touchscreen HMI, bilingual (English/Chinese), PID + BTHC balanced temperature-humidity control, 10 program groups × 16 segments (160 total), max segment time 99 h 59 min, up to 999 full cycles, USB data logging support |
| Safety Protections | Over-temperature alarm (chamber & compressor), over-current/overload protection, phase failure & ground fault detection, fan motor thermal protection, dry-run prevention for humidifier, fuse and SSR-based zero-crossing power control, leakage current protection |
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