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Temperature & Humidity Test Chamber

Torontech offers climate and humidity test chambers are available in a variety of sizes and configurations.


TT-TH Series of Temperature Humidity Test Chamber is widely used in testing various types of materials for their tolerances of heat, cold, dry and humidity. It is designed for quality inspection for all types of electronic products, electric appliance, and products from communication, instruction, automobile, plastic, metal, food, chemical, building materials, medical and aerospace industries. Unique design with high-quality material, whether you’re testing aerospace products, electronic instrumentation, materials, electrical and electronic products and various electronic components, our High low alternating temperature and humidity test chamber can give you a perfect solution.

TT-TH Series is able to simulate a wide range of temperature and humidity environments, that temperatures ranging from -86°C to +150°C and humidity range from 20% to 98% RH. Torontech can also offer you the best solutions based on your own requirements.

Test Area

  • Cabinet made of high-quality SUS304 stainless steel
  • Test hole) sealed with silicone screw plug
  • PT100 platinum temperature sensor
  • 2 pieces of adjustable and removable shelves

Air Circulation

  • 3 air circulations fans
  • The real panel of test area equipped with chip-type wind board, air flowing out from top of wind board and return into air inlet to achieve air circulation.

Cooling System

  • Mechanical compression refrigeration system
  • 2 cascade compressor
  • Environment friendly refrigerant R404a for first stage, R23 for the second stage

Humidity System

  • External isolation, stainless steel surface evaporation humidifier
  • Automatic water supply

Control Panel

  • PLC controller
  • Programmable color display touch screen controller.
  • 999 groups/sections programs
  • RS-232 /RS-485 interface, PC Link, LAN network


  • Over temperature protection and water shortage protection
  • Humidifier dry combustion protection and refrigerant high-pressure protection
  • Over current protection
  • Earth leakage protection


2.Sample Shelf

3.Cable Hole

The internal material is 304 stainless steel, mirror surface, rust-proof to high and low temperature and moisture


Nice ruggedness and long life

SUS304 stainless steel punching sample shelf 2pcs;

Standard load of 50KGS for each layer of sample shelf;

The height of the shelf is adjustable and can be removed

directly to facilitate the various sizes of test samples. Conducive to the air circulation

A standard test hole, located at the left side of the work room, is provided with a sleeve inside to prevent moisture from entering the insulation layer. Equipped with flange. The standard inner hole diameter is 50mm. Soft silicone plug seal; Metal enclosure closed, beautiful designed

A picture containing oven, kitchen, microwave, window

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A picture containing building

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4.Viewing Window


6.Water Re-circulation

Double layer insulating glass 8cm thick, made of tempered glass. The conductive film is located on the interior glass to prevent window frosting, built-in LED light for the work room lighting ;can clearly observe samples. The light control button is located below the controller

PID programmable color touch screen controller, network connection computer. Can edit 100 programs 100 segment. LIB also can preset program into the controller based on user testing requirements. The set system language is English for standard.

Water purifier: mainly purification from water source to water tank. The filter element is suggested to be replaced once a year. Water re-circulation system that reduced water use and a series of water pipes

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7.Automatic Water Inlet



Automatic control of the water intake of equipment, the customer can be directly connected to the laboratory faucet, so as to achieve automated testing; Automatic inlet diameter 1/2 inch (13.5MM); High and low water level alarm, water shortage lights and sound. Standard 2 meter drain pipe

Install 4 castors for ease moving, and with brakes function. Caster height adjustable

10cm thick polyurethane foam and insulation cotton; Better insulation performance, degradation resistance, environmental protection, noise reduction.

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10. .External Materials



A3 steel plate with galvanized coating;

Electrostatic treatment; High and low temperature

corrosion resistance; High hardness, anti - impact

Very high safety factor;

Color can be customized.




Core Function

Cooling System

After the liquid refrigerant absorbs the heat of the cooled object in the evaporator, it is vaporized into low-temperature and low-pressure steam, sucked by the compressor, compressed into high-pressure high-temperature steam, discharged into the condenser, and radiated to the cooling medium in the condenser, condensed into a high-pressure liquid, throttling through a throttle valve into a low-pressure low-temperature refrigerant, and againentering the evaporator to absorb heat and vaporize, to achieve the purpose

of cycle refrigeration.

In this way, the refrigerant completes a refrigeration cycle through four basic

processes of evaporation, compression, condensation, and throttling in the


Humidity System

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When the current humidity is less than the set point humidity, the equipment is automatically humidified. The humidification of is automatically heated by the humidification tank. When the water is heated, steam is generated, and then the steam is injected into the working room to increase the test humidity.

Air Circulation

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The centrifugal fan is installed at the rear of the chamber body, and the air is uniformly distributed through the air outlet. Air circulation adopts air outlet at top and air return at bottom, and the wind speed and pressure are in compliance with the test standard, and the temperature is stabilized at the moment of switching. The high-quality centrifugal fan is used to strongly supply air circulation, making the temperature distribution in the test area uniform.

Controller System

The PID controller as the main control unit to command, operate, detect and redistribute the various components of the equipment to achieve maximum effective use. The temperature control adopts P.I.D. S.S.R. system synchronous coordinated control, which can improve the stability and life of the control components and interface. Screen display function: LCD display, which can display test conditions (including temperature section, cycle number, running time and remaining time, etc.).

Temperature and Humidity Sensor

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PT-100 Class A sensor, real-time accurate detection and display of temperature changes at 0.001 degrees. A wet gauze and a real-time temperature, converted by temperature difference, showing real-time relative humidity.

Wiring System

A circuit board

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Voltage 380V 50Hz 3 phase. L1, L2, L3, PE, N, grounding protection. Standard 2m long cable

Protection System

Over Temperature Protection

Over Current Protection

Humidifier Dry Combustion Protection

Water Shortage Protection

Earth Leakage Protection

Refrigerant High Pressure Protection


Phase Sequence Protection










Interior Volume









dimension (mm)









dimension (mm)








Heat load




A: -20-150°C

B: -40-150°C

C: -70-150°C

D: -86-150°C



± 0.5°C



± 2.0°C

Humidity Range

20% ~ 98% RH

Heating rate

3°C / min

Cooling rate

1°C / min

Cooling system

Mechanical compression refrigeration system

Refrigerating unit

French TECUMSEH compressor


R404A, R23

Heating Element

Nichrome heater


Programmable color LCD touch screen controller, Ethernet connection, PC Link

Water supply system

Automatic water supply, Water purification system


External isolation, stainless steel surface evaporation humidifier



Temperature Sensor

PTR Platinum Resistance PT100Ω/MV A-class

Humidity Sensor

Dry and wet bulb sensor

Air circulation

Centrifugal wind fan

Safety device

Humidifier dry-combustion protection; over-temperature protection; over-current protection; Refrigerant high-pressure protection; Water shortage protection; Earth leakage protection

Build-in Water Tank(mm)











Exterior material

Steel Plate with protective coating

Interior material

SUS304 stainless steel

Thermal insulation

Polyurethane foam and insulation cotton

Observation window

Interior lighting, double-layer thermo stability silicone rubber sealing

Standard configuration

1 Cable hole (Φ 50) with plug; 2 shelves

Maximum Noise

65 dBA

Power Supply

220V 50HZ

380V 50HZ

Environmental Conditional

5°C +35°C   ≤85% RH

ú   Low temperature can cool down to -86°C

ú   The Refrigerant can be replaced by R449A/R508B

ú   The heat load can absorb 1000W in -20°C

ú   Standard & customized

* pay attention to the environmental condition during installing