Table of Specifications of each model:
| Model | Internal Volume (L) | Inner Dimension (W×H×D, mm) | Temperature Rising and Cooling Rate (°C/mins) | Power (kW) | Maximum Current (A) | Weight (kg) |
|---|---|---|---|---|---|---|
| STH300-70W5N | 300 | 700 × 700 × 600 | 5 | 30 | 45 | 850 |
| STH500-70W5N | 500 | 800 × 900 × 700 | 5 | 32 | 50 | 900 |
| STH1000-70W5N | 1000 | 1000 × 1000 × 1000 | 5 | 37 | 63 | 1050 |
| STH420-70W10N | 300 | 700 × 700 × 600 | 10 | 37 | 63 | 930 |
| STH676-70W10N | 500 | 800 × 900 × 700 | 10 | 40 | 65 | 1000 |
| STH1000-70W10N | 1000 | 1000 × 1000 × 1000 | 10 | 60 | 92 | 1180 |
| STH420-70W15N | 300 | 700 × 700 × 600 | 15 | 40 | 65 | 1050 |
| STH676-70W15N | 500 | 800 × 900 × 700 | 15 | 40 | 68 | 1150 |
| STH1000-70W15N | 1000 | 1000 × 1000 × 1000 | 15 | 68 | 105 | 1320 |
Notes:
All models support an operating temperature range from –70 °C to +150 °C and humidity range from 20–98% RH.
Models with suffixes W5N / W10N / W15N correspond to thermal change rates of 5°C/min, 10°C/min, and 15°C/min, respectively.
All models require a 3-phase 380V, 50Hz power supply, a circulating cooling water system, and a pure water supply.
Temperature & Humidity Range
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Operating temperature: –70 °C to +150 °C
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Humidity range: 20% – 98% RH (at 20 – 85 °C)
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Temperature fluctuation: ±0.5 °C
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Temperature deviation: ±2.0 °C
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Humidity deviation: ±3% (>75%RH) or ±5% (≤75%RH)
Control System
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7” touch screen with 800×480 resolution, integrated PLC
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Supports 3 operating modes: timed, manual (fixed setpoint), and automatic programmed cycles
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Stores up to 32,000 program cycles; data export via USB or PC
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Continuous data logging with 3-month storage capacity (1-minute recording interval)
Cooling System
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Equipped with imported piston or scroll compressors (Copeland, Bitzer, Bock)
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Uses R404A and R23 eco-friendly refrigerants
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All condensers include filters to enhance system longevity
Materials & Safety Features
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Inner chamber: SUS304 stainless steel
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Outer body: Galvanized steel with electrostatic powder coating
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Insulation: Heat-resistant fiberglass and PU foam
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Safety protection: Phase loss, overheat, overcurrent, electric leakage, overvoltage, compressor protection, water shortage protection, etc.
Power & Consumption
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Power supply: 3-phase, 380 V, 50 Hz
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Power consumption: 30 kW – 68 kW
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Max current: 45 A – 105 A
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Weight: 850 kg – 1320 kg (depending on model)
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Requires cooling water circulation (5–18 m³/h) and pure water supply system
Standard & Optional Accessories
Standard:
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Heated glass observation window
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Two cable ports (Ø50 mm)
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Two sample trays
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Four casters for mobility
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Full protection system with alarm light and buzzer
Optional:
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Automatic water supply system
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External mobile sensors
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Remote monitoring software
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Sample trolleys
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Ultra-dry environment generator (5 °C/5% RH)
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Data loggers and more
