Skip to main content

Benchtop Environmental Chamber

Benchtop Environmental Chamber 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.


TTTH-50 Bench Temperature Humidity Test Chamber are 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, and 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.

Test Area

  • Material of the test cabinet is high quality SUS304 stainless steel.
  • Test hole, sealed with silicone screw plug.
  • Temperature sensor Pt100 platinum
  • Humidity sensor dry and wet bulb
  • 2 pieces of adjustable and removable shelves

Air Circulation

  • Air circulation fans in the workroom of the chamber.
  • The real wall of test area equipped with chip-type wind board. Air flowing from top of wind board which control air direction return to air inlet to achieve air circulation.

Cooling System

  • Mechanical compression refrigeration system
  • Refrigerating unit is French TECUMSEH compressor.
  • Two 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.
  • Programs reach to 999 groups and 999 sections
  • RS-232 interface, PC Link, LAN network

Safety Protection

  • Over temperature protection
  • Water shortage protection
  • Humidifier dry combustion protection
  • Refrigerant high pressure protection
  • Over current protection
  • Earth leakage protection


A screenshot of a computer

Description automatically generated



2.Sample Shelf

3.Cable Hole

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

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 strainer

Description automatically generated

A close up of a device

Description automatically generated

4.Viewing Window


6.Build-in Water Tank

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 segments.

LIB also can preset program into the controller based on user testing requirements.

The set system language is English for standard.

The water stored in the built-in water tank meets the needs of the test. When there is a low water level, it will alarm to indicate that water needs to be added. At this time, it is necessary to add enough water till to the high water level.

A close up of a blue door

Description automatically generated

A picture containing grass, monitor

Description automatically generated



89.External Materials

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.

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.

A close up of a window

Description automatically generated


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 again entering 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 system

Humidity System


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


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.)