If the samples you need to test will not fit through the door of a bench-top unit — a complete vehicle dashboard, a battery module or pack, a pallet of finished goods, a full rack of control electronics — a walk-in temperature humidity test chamber is the practical answer. The GAG-E201 series is a room-sized environmental chamber built to be entered, with an insulated panel body, a full-height door and a floor you can load with a trolley. We build it around your test standard and your largest sample, not around a fixed catalogue size. Three standard working volumes of 8 m³, 12 m³ and 20 m³ cover most laboratories; dimensions beyond those are manufactured to order.

This product family is specified under many names in RFQs: walk-in environmental test chamber, walk-in climate chamber, walk-in temperature and humidity test room, walk-in damp heat / thermal cycling chamber, aging test room, burn-in room, environmental simulation room, large high-low temperature chamber and constant temperature room. They all refer to the same category of equipment. If your enquiry uses one of these terms, send it to us as written and our engineers will work from it directly.

Key Advantages

• Built around the sample, not the catalogue. Inner width, depth and height are configurable. Tell us the largest item you need to load plus the clearance required for airflow, and we draw the chamber around it. The 8 / 12 / 20 m³ sizes are starting points, not limits.

• Uniform conditions in a large space. Holding ±0.5°C fluctuation and ≤±2°C uniformity across a room-sized volume is harder than in a 100 L box. Air distribution is designed for the actual room geometry, with multi-point sensor monitoring so you can verify deviation with your own instruments rather than only the controller reading.

• SUS 304 stainless working space. The interior is full SUS 304 stainless steel with argon-arc welded seams. The outer shell is anti-corrosion electrolytic steel plate finished with a high-temperature coating. Both matter when the room runs at 95%RH for weeks at a time.

• Cascade refrigeration with water cooling. A cascade compressor set paired with a water-cooled condenser handles the -40°C and -60°C ranges without the heat rejection problems an air-cooled unit would create indoors. Compressors are selected from Tecumseh, Copeland and Bitzer, so spare parts can be sourced locally in most markets years after installation.

• Programmable control with exportable records. A colour touchscreen handles fixed-value operation, multi-segment programmes and real-time curve display. Test data downloads through USB or network port for audit filing and customer reports.

• Factory-direct supply. We design, fabricate, assemble and run no-load verification on every chamber in our own plant before packing. OEM and ODM builds, custom sizes and third-party witness testing are all supported.

Technical Specifications — Model Range

Model

Inner Size W×D×H (cm)

Working Volume

Remark

Working volume is stated as the usable clear space inside the insulated panels. When you size the room, allow at least 100 mm of airflow clearance around every specimen and keep the total sample load below roughly one fifth of the volume; a densely packed room will give you gradients the controller cannot correct.

Performance Parameters

Item

Specification

Application Scenarios

The GAG-E201 walk-in environmental test chamber is used for heat-resistance and cold-resistance testing, steady damp heat exposure, temperature cycling and long-duration aging on complete assemblies rather than small coupons. Typical applications include:

• Defence and aerospace. Environmental qualification of onboard equipment, connectors, optical units and ground support hardware under combined temperature and humidity.

• Automation components. Endurance runs on industrial controllers, sensors, servo drives and complete control cabinets, powered and monitored during the test.

• Automotive parts. Full dashboards, door modules, lamp assemblies, wiring harnesses and HVAC units tested as assembled parts, not cut samples.

• Electronics and electrical appliances. Damp heat and dry heat testing referenced to IEC 60068-2-2, IEC 60068-2-78 and IEC 60068-2-30 for PCBAs, racks, power supplies and finished devices.

• Battery packs and energy storage. Climate conditioning ahead of UN 38.3 transport testing, plus storage and cycling checks on modules and cabinets that will not fit a bench chamber.

• Plastics, rubber and polymers. Heat aging, humidity-driven degradation studies and dimensional stability checks on large moulded parts.

• Chemicals and pharmaceuticals. Stability and storage conditioning of drums, cartons, coatings, adhesives and packaged product under controlled climate.

• Packaging and finished goods. Shelf-life and transit climate simulation on palletised loads, with trolley access through the full-height door.

Construction, Control and Refrigeration

Chamber body. Insulated panels form the walls, ceiling and floor, with SUS 304 stainless on the inner face and anti-corrosion electrolytic steel with high-temperature coating outside. The full-height door carries a defrost vacuum observation window so you can watch the samples without opening the room, plus energy-saving interior lighting. A cable / test port brings power and signal lines to specimens under test, and the port diameter can be specified at order.

Control system. The colour touchscreen controller supports fixed-value running, multi-segment programming and real-time curve display. Setpoints, alarm history and measured data can be downloaded via USB or network port and exported for quality records. Multi-point temperature monitoring lets you document uniformity across the room with your own sensors — useful when a customer or third-party lab audits the report.

Refrigeration and humidification. A cascade compressor set with a water-cooled condenser covers the -40°C and -60°C configurations. Compressors are Tecumseh, Copeland or Bitzer units selected for local serviceability. Humidification uses a stainless steam generator with low-water protection and automatic water supply; the low-humidity dehumidifying system is available where the test standard calls for 10%RH. Every chamber runs a no-load temperature and humidity verification before it leaves our factory.

Installation and Site Requirements

A walk-in climate chamber is shipped as insulated panels and assembled on site, not delivered as one crate. Before we release a drawing we confirm four things with you: the access route and doorway width the panels must pass through; floor loading and levelness; the electrical supply (220V or 380V, specified at order); and the water supply and drain for the water-cooled cascade unit. We provide the layout drawing, panel assembly guidance, commissioning procedure and operator training. For export orders our engineers can supervise installation on site or work alongside your local contractor — tell us which you prefer when you request the quotation.

Which Size Should You Choose?

As a working rule, the 8 m³ room suits single large assemblies, control cabinets and battery modules; the 12 m³ room suits vehicle interiors, racked electronics and multi-pallet loads; the 20 m³ room is for full vehicle sub-systems, large battery cabinets and palletised goods that need trolley access. If your schedule involves fast cycling between -40°C and +85°C, specify the ≥3°C/min cooling option — the standard 1°C/min machine will stretch each cycle into hours in a volume this large. If you only need temperature and no humidity control, tell us; the humidity section, boiler and water treatment can be removed and the price adjusted accordingly.

About Gaoge-Tech Instrument Co., Ltd

Gaoge-Tech Instrument Co., Ltd has specialised in the design, manufacture and sale of professional testing equipment for 16 years. Our product lines cover environmental test chambers, battery testing instruments, tensile and mechanical testing machines, furniture, paper and packaging, luggage and footwear, bicycle and home appliance testing equipment. Machines are built to meet ISO, ASTM, SATRA, TAPPI, EN, AATCC, ANSI, CSA, UL, JIS, DIN, GB, CNS and other international standards. We provide lifetime technical advice and after-sales service, from installation guidance and operator training to spare parts supply, and support OEM and ODM customization for laboratories, factories and third-party testing institutions worldwide. Every walk-in chamber is built in our own workshop, so the drawing, the bill of materials and the test record all come from one source.

Request a Quotation

Send us the test standard you work to, the dimensions of the largest sample, the temperature and humidity range, and your available floor space. Our engineers will return a recommended size, a layout drawing and a quotation within one working day. Custom volumes, -60°C cascade configurations, low-humidity systems and on-site commissioning are all available factory-direct.