| Model | SN887B-64L | SN887B-80L | SN887B-150L | SN887B-200L |
| Inner chamber material (W*H*D) | 400×400×400 | 400×500x400 | 600×500×500 | 750×600×600 |
| External chamber material (W*H*D) | 1440×1910×1825 | 1450×2040×2000 | 1620×2040×2100 | 1870×2100×2140 |
| Heater | Nickel alloy electric heater |
| Condenser | Shell-tube condenser(water-cooled) |
| Evaporator | High-performance fin type with automatic load capacity adjustment, which can be used for a long time under low temperature and high humidity conditions without frosting |
| Controller | 7-inch color LCD touch control screen + PLC module |
| Program capacity | Usable program capacity: 120 groups at most; time setting: 99 hours and 59 minutes per segment; |
| Operating power | About 9～30KW (Automatically turn on heating and cooling system according to PID calculation) |
| Power supply | 380V±10%V; 50Hz; three-phase four-wire + grounding wire, protective grounding resistance is less than 4Ω |
| Safety equipment | Over-temperature protection, motor overload protection, compressor high-voltage protection switch, compressor over-heat protection switch, compressor over-current protection, over-voltage under-reverse phase protection switch, leakage circuit breaker, cooling water abnormal protection. |
| Temperature shock range | -40～+150℃ |
| Cold storage temperature range in low temperature zone | -10℃～-50℃ |
| Heat storage temperature range in high temperature zone | +50℃～+180℃ |
| Impact reset time | About 5 mins |
| The constant temperature time of high-low temperature shock | Above 30 mins |
| Conversion time | ≤10s |
| Temperature fluctuations in the sample area | ±0.5℃ (at constant temperature) |
| Temperature accuracy range | Setting accuracy: ±0.1℃, indication accuracy: ±0.1℃, resolution: ±0.1℃ |
| Temperature variation | ±2°C (no load, at constant state) |
| Temperature sensor | High-precision A grade PT100 temperature |
| The refrigerant | R404a, R23 |
| Chamber structure | With independent product test area, high temperature storage area, low temperature storage area |
| Inner chamber material | SUS304 stainless steel plate |
| External chamber material | Cold rolled board baking varnish |
| Insulation material | Rigid polyurethane foam + insulation cotton |
| Circulation method | Multi-wing fan |
