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Constant Temperature and Humidity Test Chamber









Temperature range



Constant Temperature And Humidity Test Chamber is designed for testing the capability of heat-endurance, cold-endur


Constant temperature and humidity test chamber provides a wide temperature and humidity control range. It is using to simulate severe high temperature, low temperature or damp heat environment .Customer can select suitable models based on performance and test area capacity.
It is widely used in various industries, such as electronic instruments and meters, new materials, electricians, vehicles, metals, electronic products, aerospace materials , which may encounter environmental condition during transportation, storage, and in-using


Model HD-E702-100 HD-E702-150 HD-E702-225 HD-E702-408 HD-E702-800 HD-E702-1000
Internal dimension 400*500*500mm 500*500*600mm 500*600*750mm 600*800*850mm 1000*800*1000mm 1000*1000*1000mm
External dimension 900*1070*1400mm 1000*1070*1500mm 1000*1170*1650mm 1100*1370*1750mm 1500*1180*1900mm 1500*1380*1900mm
Voltage(V) Sigle Phase 220V Sigle Phase 220V Sigle Phase 220V Three Phase 380V Three Phase 380V Three Phase 380V
Temperature range -20℃,-40℃,-70℃~150℃
Temp.& Humi.Adjust Way Balanced Temperature Humidity Control System(BTHC),Intelligent PID Regulation
Temperature fluctuations ≤±0.7℃ (without load and temperature stable)
Internal Chamber Material Stainless Steel 304
External Chamber Material Stainless steel or paint spray
Temperature uniformity ≤±0.7℃    (without load and temperature stable)
Temperature deviation ≤±1.0℃/ ±2.0℃  (without load and temperature stable)
Heating rate 3℃/min in average
Cooling rate 1℃/min in average
Humidity range  20%~98%RH
Humidity deviation 1 、≥75%RH:≤±3%RH ;2 、≤75%RH :≤±7%RH
Cooling Method Single-stage compression,Second-stage Compression;
Refrigerator Hermertically Sealed France Tecumseh Compressor or Semi-hermetic BOCK Compressor
Cooling Method Air-cooled



Compatible test standards

IEC60068-2-1 : Cold
IEC60068-2-2 : Dry heat
IEC60068-2-14 : Change of temperature with specified rate of change
IEC60068-30 : Damper heat, cyclic (Rapid-Rate Temperature Cycle Type)
IEC60068-2-38 : Composite temperature/ humidity cyclic test
IEC60068-2-78 : Damp heat, steady state
IEC61747(5.2.7) : Liquid crystal and solid-state display devices Environmental, endurance and mechanical test (Rapid-Rate Temperature Cycle Type)
ISO16750-4 5.3 : Road vehicles (temperature cycling)

Cooling system

1.The refrigerating system equips France Tecumseh, and uses environmentally friendly refrigerant (R404a). Adopting binary low temperature circuit system design, it is convenient to use different compressors for work in different temperature regions.
2.Temperature and humidity control using P.I.D + S.S.R system coordinated control with the same channel. It has the function of automatic calculation, which can immediately modify the temperature and humidity change conditions to make the temperature and humidity control more accurate and stable.
3.High-precision controllers of temperature and humidity. The relative temperature and humidity performance is accurately set and displayed with a resolution of 0.1℃.

Temperature and Humidification System

1.Temperature system using Nickel-chromium alloy high-speed heating electric wire;
2.High temperature system is completely independent;
3.The humidity system using stainless steel tube built-in nickel-chromium alloy high-speed heating electric wire and high-temperature magnesium oxide powder, which has fast response and long life;
4.The temperature and humidification system is completely independent, and humidity has automatic water supplement device.

Chamber Design Features

1. High performance and quiet operation (68 dBA)
2. Space-saving designed for flush installation to wall
3. Full thermal break around doorframe
4. One 50mm diameter cable port o left, with flexible silicone plug
5. Accurate wet/dry-bulb humidity measurement system for easy maintain

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