High Low Temperature Alternating Test Chamber
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| Brand | Other Brands |
|---|---|
| Origin | Imported |
| Manufacturer Type | General Distributor |
| Price | USD 14,000 (Reference Only) |
| Temperature Range | −70 °C to +150 °C |
| Humidity Range | 20–98% RH (optional: 5–98% RH) |
| Rapid TC Range | −45 °C to +85 °C or −20 °C to +85 °C |
| Ramp Rates | 5–25 °C/min (customizable) |
| Temperature Uniformity | ±2 °C |
| Temperature Stability | ±0.5 °C |
| Humidity Uniformity | ±3.0% RH (at ≥75% RH) |
| Humidity Stability | ±2.5% RH |
| Interior Material | SUS#304 Stainless Steel |
| Refrigeration System | Hermetic Dual-Stage Compressor with Eco-Friendly Refrigerants (R404A/R23) |
| Controller | Touchscreen LCD with English/Chinese Interface |
| Power Supply | AC 380 V ±5%, 50 Hz ±0.5 Hz, 3-Phase 5-Wire |
| Brand | Yi Heng (Shanghai Yi Heng) |
|---|---|
| Origin | Shanghai, China |
| Model | BPH Series / BPHJ Series |
| Temperature Range | −20 °C to 130 °C (A), −40 °C to 130 °C (B), −60 °C to 130 °C (C) |
| Temperature Uniformity | ±2 °C |
| Temperature Fluctuation | ±0.5 °C |
| Refrigerant | R134a (non-ozone-depleting) |
| Internal Chamber Material | AISI 304 mirror-finish stainless steel |
| Control System | Microprocessor-based digital controller (BPH) or 7-inch color TFT touchscreen with programmable logic (BPHJ) |
| Programmability | Up to 120 programs × 99 segments × 999 cycles |
| Communication Interface | RS-232 / RS-485 standard |
| Safety Protections | Independent over-temperature cut-off, compressor overheat/overcurrent/overload protection, fan overheat protection, dual-stage temperature deviation alarms |
| Brand | YiHeng (Shanghai Yi Heng) |
|---|---|
| Origin | Shanghai, China |
| Model | BPHJS Series |
| Temperature Range | −60 °C to +130 °C |
| Humidity Range | 30–95 %RH |
| Temperature Uniformity | ±2 °C |
| Temperature Fluctuation | ±0.5 °C |
| Humidity Fluctuation | ±3 %RH |
| Refrigerant | R134a (ozone-friendly) |
| Inner Chamber Material | AISI 304 mirror-finish stainless steel |
| Control System | Color TFT touchscreen with programmable logic (120 programs × 99 segments, up to 999 cycles) |
| Communication Interface | RS-232/RS-485, USB data export (SD card), optional 485 printer interface |
| Safety Protections | Independent over-temperature cutoff, compressor overheat/overcurrent/overload protection, fan overheat protection, low-water alarm |
| Power Supply | AC 380 V, 50 Hz (models with −40 °C or −60 °C capability) |
| Brand | Yoyi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | GDW-225L(A/B/C) |
| Temperature Range | A: −20 °C to 150 °C |
| B | −40 °C to 150 °C |
| C | −60 °C to 150 °C |
| Humidity Range | 20–98% RH |
| Humidity Deviation | ±3–5% RH |
| Temperature Fluctuation | ±0.5 °C |
| Temperature Uniformity | ±2 °C |
| Temperature Resolution | 0.1 °C |
| Heating Method | Nickel-Chromium Alloy Heater |
| Refrigeration System | Hermetic Imported Compressor with Eco-Friendly Refrigerant (R404A/R23) |
| Control System | TEMI PID-Based Intelligent Controller |
| Programmability | 100-Stage Multi-Segment Program |
| Power Supply | AC380V 50Hz |
| Internal Volume | 225 L |
| Internal Dimensions (W×D×H) | 600×500×750 mm |
| External Dimensions (W×D×H) | 1115×1085×1885 mm |
| Standard Accessories | 2 Fixed + 10 Adjustable 304 Stainless Steel Shelves, Left-Side Test Port, Triple-Layer Insulated Observation Window with Defrosting & Illumination, Silicone Door Seal, RS485/USB Interface (Optional) |