Combined environmental chamber G-ETM3

The G-ETM3 Combined Environmental Chamber is a multifunctional test system integrating temperature, humidity, and vibration to simulate comprehensive environmental conditions encountered during product transportation, storage, and operation. It is suitable for evaluating the reliability of electronic components, automotive parts, aerospace materials, and military equipment under combined stress environments.

The chamber can operate as an independent temperature & humidity chamber or as a combined system when interfaced with a vibration test bench.

Application

The chamber is designed for environmental reliability testing across various industries, including:

(1) Electronics & Semiconductors: PCBs, sensors, modules, semiconductor devices

(2) Automotive Components: ECUs, connectors, lighting products, wiring harnesses

(3) Aerospace & Defense: avionics systems, structural composites, military electronics

(4) Telecommunication Devices: base station modules, insulated enclosures

(5) Industrial Machinery: actuators, motors, mechanical assemblies

(6) Battery & Energy Systems: lithium battery packs, power modules

(7) General Environmental Stress Screening (ESS) for reliability improvement

Specimen Restrictions (Not allowed):

Flammable, explosive, volatile materials

Corrosive substances

Biological samples

Strong electromagnetic radiation sources

Standards

This chamber meets or supports the following national and military environmental testing standards:

(1) GB/T 2423.1-2001 – Test A: Low Temperature

(2) GB/T 2423.2-2001 – Test B: High Temperature

(3) GB/T 2423.3-2001 – Test Ca: Constant Damp Heat

(4) GB/T 2423.4-2001 – Test Db: Alternating Damp Heat

(5) GJB 150.3-86 – High Temperature Test

(6) GJB 150.4-86 – Low Temperature Test

(7) GJB 150.9-86 – Humidity Test

(8) GB/T 5170.2-2008 – Verification of Temperature Test Equipment

(9) GB/T 5170.5-2008 – Verification of Damp Heat Test Equipment

Features

(1) Three-in-one system: temperature, humidity, and vibration integration

(2) Wide temperature range: –50°C to +150°C

(3) Humidity range: 10–98% RH (no active heat load)

(4) High accuracy control: temperature fluctuation ≤ ±0.5°C; humidity deviation ≤ ±3–5% RH

(5) Excellent thermal insulation: PU foam + fiberglass structure

(6) Large viewing window: heated, anti-fog laminated glass

(7) Dual cable ports: Ø100 mm on the right side

(8) Touchscreen controller: 7-inch TFT color LCD, programmable up to 50 programs × 50 steps

(9) Vibration table interface: adjustable moving system for precise alignment

(10) Robust refrigeration system: dual-stage cascade refrigeration with imported compressors

(11) High reliability safety protections including over-temperature, phase loss, compressor protection

(12) Mobility: manual casters or optional motorized traction system with automatic positioning

(13) Independent humidification system: stainless-steel boiler, SSR control, anti-dry protection

(14) RS-485 & USB interface: supports data export and remote monitoring

(15) Can operate independently as a temperature and humidity chamber when vibration table is removed

Parameters

Technical Specifications Table

Accessories

(1) Power cable (custom length)

(2) Operation manual

(3) Warranty card & inspection certificate

(4) USB storage/export support

(5) Water treatment system (RO purifier with pressure tank)

(6) Internal illumination lamp

(7) Vibration table interface kit

(8) Drain pipes & water supply accessories

Optional Accessories:

(a) Temperature recorder (SH560-NDN)

(b) Additional cable ports (Ø50–Ø120 mm)

(c) Motorized traction system with automatic positioning

(d) Customized water-cooling kit

Test Procedures

(1) Preparation

Ensure chamber is installed correctly and water supply is connected

Confirm no restricted test specimens are used

Power on the chamber and perform system self-check

(2) Specimen Installation

Place test item on the test shelf or vibration table

Route wires through cable ports if needed

(3) Parameter Setting

Set temperature, humidity, time, and vibration mode (if applicable)

Select or create multi-step program using the 7-inch controller

(4) System Operation

Start chamber; heating, cooling, and humidification systems operate automatically

Controller stabilizes desired environmental conditions

(5) Combined Testing

Align chamber to vibration table (manual or motorized)

Lock positioning mechanism

Start vibration + temperature/humidity combined test

(6) Monitoring

Observe test progress via touchscreen and observation window

Data logged automatically for real-time and historical review

(7) Completion

System returns to standby after program ends

Remove specimen after conditions return to a safe level

Maintenance Information

(1) Daily Maintenance

Check water tank and humidifier water level

Ensure door seal integrity; clean viewing window

Verify temperature & humidity readings for stability

(2) Weekly Maintenance

Clean condenser fins and drainage system

Inspect cable ports and sealing plugs

Check lubrication of fan bearings

(3) Monthly Maintenance

Test safety protections (over-temperature, leakage, phase loss)

Inspect electrical terminals for looseness

Replace humidifier cotton and check water filter condition

(4) Annual Maintenance

Full calibration of temperature, humidity, and vibration systems

Replace aging seals and insulation materials

Comprehensive refrigerant leak inspection

Service compressors and PLC modules