Temperature and Humidity Alternating Test Chamber
The Temperature and Humidity Alternating Test Chamber is a large-capacity environmental simulation system designed for reliability testing under constant and alternating temperature and humidity conditions. With an effective volume of approximately 1000 L, it supports constant high/low temperature tests, gradual temperature ramp tests, constant damp heat tests, and alternating damp heat tests.
You can use this chamber to simulate real environmental stresses such as heat, cold, humidity, and cyclic climate changes. The equipment adopts modular structural design, cold balance refrigeration control, and precision PID regulation to ensure stable, energy-efficient, and reliable operation.
Application
You can use this chamber for environmental reliability testing of:
(1) Electrical and electronic products
(2) Automotive components
(3) Industrial parts and assemblies
(4) Communication equipment
(5) Materials and components requiring climate simulation testing
Test sample restrictions:
(1) Flammable, explosive, or volatile substances are prohibited.
(2) Corrosive or biological samples are prohibited.
(3) Samples with strong electromagnetic emission sources are prohibited.
Standards
The chamber complies with:
(1) GB/T 2423.1-2001 — Low Temperature Test (Partial)
(2) GB/T 2423.2-2001 — High Temperature Test (Partial)
(3) GB/T 2423.3-2006 — Constant Damp Heat Test
(4) GB/T 2423.4-1993 — Alternating Damp Heat Test
(5) GB/T 2423.34-2005 — Temperature and Humidity Combination Test
(6) QC/T 413-2002 — Automotive Product Temperature/Humidity Cycle Test
(7) GB/T 5170.2-2008 — Temperature Test Equipment Inspection
(8) GB/T 5170.5-2008 — Damp Heat Test Equipment Inspection
Parameters
| Parameter | Specification |
|---|---|
| Effective Volume | Approx. 1000 L |
| Internal Dimensions | 1100 × 950 × 950 mm (W × H × D) |
| External Dimensions | 1400 × 1950 × 1750 mm (W × H × D) |
| Temperature Range | -40°C to +150°C |
| Humidity Range | 10%–98% RH |
| Temperature Fluctuation | ±0.5°C |
| Humidity Fluctuation | ±2.5% RH |
| Temperature Uniformity | ≤ 2°C |
| Heating Rate | ≥ 3°C/min (-40°C to +100°C, no-load) |
| Cooling Rate | ≥ 1.5°C/min (+20°C to -40°C, no-load) |
| Humidity Conversion Time | ≤ 40 min |
| Noise Level | ≤ 65 dB |
| Power Supply | 380V |
| Power | Approx. 4 kW |
Features
(1) Large 1000 L chamber suitable for medium and large test samples.
(2) Wide temperature range from -40°C to +150°C.
(3) Humidity range from 10% to 98% RH.
(4) Modular structural design separating electrical, refrigeration, and water systems for safety.
(5) SUS304 mirror-finish stainless steel inner chamber with seamless welding.
(6) 100 mm rigid polyurethane insulation for thermal stability.
(7) Cold balance refrigeration system reduces power and water consumption.
(8) Multi-layer vacuum observation window with anti-condensation heating.
(9) PID-controlled refrigerant flow for efficient cooling.
(10) RJ45 and USB communication interfaces.
(11) 100 mm sealed test port for cable routing.
(12) Five adjustable shelves, 20 kg load per layer.
(13) Ramp control in 5°C increments.
(14) Low-noise design with vibration-damping compressor system.
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Main Material List |
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Name |
Specification (W × H × D) |
Origin |
Quantity |
Remarks |
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A. Structural Components |
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Enclosure |
Integrated type |
China |
Type 1 |
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Air conditioning unit |
Stainless steel |
China |
Type 1 |
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Unit and control box |
Cold-rolled steel plate with painted finish |
China |
Set 1 |
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Single door |
Stainless steel with iron plate reinforcement |
China |
Type 1 |
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Circulation motor |
0.3HP |
China |
Set 4 |
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B. Refrigeration Components |
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Compressor |
Third generation scroll cooling |
Guangzhou, China |
2 units |
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Condenser |
Air-cooled |
China |
1 set |
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Evaporator |
3/8 finned type |
Mexico |
1 set |
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Oil Separator |
AW series |
Denmark |
Type 1 |
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Dryer |
DML |
Japan |
2 sets |
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Solenoid Valve |
SEV/EVR |
Denmark |
Type 9 |
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Expansion Valve |
TES |
United States |
Type 2 |
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Refrigerant and Consumables |
R404A R23 |
Guangzhou, China |
Type 2 |
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C. Control Components |
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Controller |
V1.0 |
China |
1 unit |
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Phase sequence protector |
PH Series |
China |
1 piece |
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Switching power supply |
DC24V2.1A |
China |
Type 1 |
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Sensor |
PT100 |
Joint Venture |
Type 1 |
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Power switch |
3P 32A |
China |
Type 1 |
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Contactor |
AX Series |
Sweden |
Type 5 |
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Heating element |
Fin-type Ni-Chromium Alloy |
China |
3 pieces |
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Solid-state relay |
SSR 0.75~6 square millimeters |
China |
3 sets |
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Cable |
V1.0 |
China |
1 set |
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D. Humidification Components |
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Humidification Hardware System |
20*35cm |
China |
1 |
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Humidification Pipe |
220V 1.5kW |
China |
1 |
|
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Water Pump |
24V 35W |
Joint Venture |
1 |
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Water Level Sensor |
24v 50w |
China |
2 |
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120# Wet Cloth |
70*100mm |
China |
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FAQ
(1) What is this product?
It is an environmental simulation chamber used for temperature and humidity reliability testing.
(2) What is this product used for?
You use it to test how products perform under constant or alternating high/low temperature and humidity conditions.
(3) What is the working principle of this product?
It uses PID-controlled heating, refrigeration, humidification, and dehumidification systems to accurately simulate environmental conditions inside a sealed chamber.
(4) Why is this product important?
It verifies product durability, reliability, and compliance with environmental testing standards before market release.
(5) What industries is this product suitable for?
It is suitable for electronics, automotive, materials, communication equipment, and research laboratories requiring environmental testing.
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