Standard Temperature and Humidity Test Chamber

Product Details

Temperature and Humidity Range:

• Temperature Range: Typically between -70℃ to 150℃. Common ranges include RT+10℃～100℃, -20℃～150℃, -40℃～150℃, -60℃～150℃, and -70℃～150℃.

• Humidity Range: Usually from 20% to 98% RH. Some units, with added dehumidifiers, can reach humidity levels as low as 5% RH.

Temperature and Humidity Control Precision:

• Temperature Fluctuation: Generally required to be ≤ ±0.5℃.

• Temperature Deviation: Typically ≤ ±2℃.

• Humidity Fluctuation: Typically ≤ ±3% RH.

• Humidity Deviation: Usually ≤ ±2.5% RH.

Temperature Rise and Fall Rate:

• Heating Rate: For example, from room temperature to 150℃, typically takes 20 to 30 minutes. Some units have a heating rate of ≥ 2-3℃/min.

• Cooling Rate: For example, from room temperature to -20℃, takes about 40 minutes. To -40℃, about 60 minutes. To -70℃, about 100 minutes.

Chamber and External Dimensions:

• Chamber Size: Common sizes include 400×400×500mm, 450×450×500mm, 500×600×750mm, 800×700×900mm, and 1000×800×1000mm.

• External Dimensions: Vary significantly between models, such as 900×900×1650mm, 1020×880×1580mm, and 1070×1030×1825mm.

Cooling and Heating Systems:

• Cooling System: Typically uses mechanical refrigeration, such as steam compression refrigeration. Low-temperature areas use low-temperature refrigerants, while high-temperature areas use medium-temperature refrigerants.

• Heating System: Often employs nickel-chromium alloy electric heaters, with a fully independent system. Some models may also have additional heaters in the bottom of the test chamber.

Control System:

• Controller: Typically uses imported microcomputer-based temperature and humidity integrated controllers with multi-group PID control functions.

• Sensors: Temperature sensors often use platinum-platinum resistance PT100Ω, while humidity is usually measured with solid-state electronic sensors.

Safety Protections and Other Features:

• Safety Protections: Includes over-temperature protection, power failure protection, fuse-less switches, compressor overload protection, high refrigerant protection, temperature limit protection, and failure alarm systems.

• Power Supply: Typically AC220V/380V ±10%, 50/60Hz.

• Power Consumption: Varies depending on the model and specifications, ranging from 2.8KW to 4.5KW.