Environmental Test Chamber

Product Specifications

Technical details and manufacturing context for Environmental Test Chamber

Definition

An environmental test chamber is a specialized laboratory equipment designed to create and maintain precise environmental conditions such as temperature, humidity, vibration, and other climatic factors to evaluate the performance, reliability, and durability of products, components, and materials under simulated real-world or accelerated stress conditions. The chamber typically features a stainless steel interior (SUS304) and insulated panels to ensure thermal stability and corrosion resistance. It operates within a temperature range of -70 to 150 °C and a relative humidity range of 20 to 98 %RH, with temperature uniformity of ±2.0 °C and temperature fluctuation of ±0.5 °C. The heating rate averages 3.0 °C/min, and the cooling rate averages 2.0 °C/min. The interior volume ranges from 225 to 1000 liters, depending on the test specimen size. Temperature accuracy is ±0.1 °C, and humidity accuracy is ±2.5 %RH within the specified humidity range. The chamber requires a three-phase 380 V AC power supply (50/60 Hz) and consumes between 8 and 15 kW, depending on the model and operating conditions. The weight varies from 300 to 800 kg. The chamber is designed to comply with relevant IEC standards, including IEC 60068-2-1, IEC 60068-2-2, IEC 60068-2-78, and IEC 60068-3-5, which serve as procurement and verification references. However, these standards do not imply certification or compliance of any specific unit. For accurate selection and application, it is essential to verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The chamber operates by using a closed-loop control system where sensors monitor internal conditions and feed data to a controller. The controller compares actual values with setpoints and activates appropriate systems (heating, cooling, humidification, dehumidification) to achieve and maintain the desired environmental parameters within the test volume. This ensures that the specified temperature and humidity conditions are maintained consistently throughout the test period, allowing for reliable evaluation of product performance under controlled stress.

Common Materials

Stainless Steel, Insulated Panels

Technical Parameters

Parameter	Typical range	Notes & selection driver
Temperature RangeRequired	-70–150 °C	Minimum to maximum temperature that can be achieved and maintainedIEC 60068-2-1, IEC 60068-2-2
Humidity RangeRequired	20–98 %RH	Minimum to maximum relative humidity that can be achieved and maintainedIEC 60068-2-78
Temperature UniformityRequired	±2.0 °C	Maximum temperature variation within the working volume at steady stateIEC 60068-3-5
Temperature FluctuationRequired	±0.5 °C	Maximum temperature deviation from setpoint over timeIEC 60068-3-5
Heating RateRequired	3.0 °C/min	Average rate of temperature increase from minimum to maximumIEC 60068-3-5
Cooling RateRequired	2.0 °C/min	Average rate of temperature decrease from maximum to minimumIEC 60068-3-5
Interior Volume	225–1000 L	Select based on test specimen size
Temperature Accuracy	±0.1 °C	At sensor; overall system accuracy
Humidity Accuracy	±2.5 %RH	Within 20–98 %RH range
Power Supply	380 V AC	Three-phase, 50/60 Hz
Power Consumption	8–15 kW	Depends on model and operating conditions
Interior Material	SUS304	Stainless steel; corrosion resistantASTM A240
Weight	300–800 kg	Varies with chamber size

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Test Chamber
Insulated enclosure that contains the test specimens and maintains environmental conditions

Material: Stainless steel interior with insulated walls
Temperature Control System
Heats and cools the chamber interior to achieve desired temperature setpoints

Material: Electric heaters and refrigeration compressor
Humidity Control System
Adds and removes moisture from the chamber air to achieve desired humidity levels

Material: Steam generator and dehumidification coil
Controller
Programmable interface for setting test parameters, monitoring conditions, and recording data

Material: Electronic components with touchscreen display
Air Circulation System
Ensures uniform distribution of temperature and humidity throughout the chamber volume

Material: Fan and ducting system
Observation Window
Allows visual inspection of test specimens during operation without disturbing conditions

Material: Multi-pane insulated glass
Sensors
Monitor the internal temperature and humidity and feed the data to the controller.

Application & selection

Application Fit & Sizing Matrix

Operational Limits

pressure:	Atmospheric to 2 bar
temperature:	-70°C to +180°C
cooling rate:	3°C/min
heating rate:	5°C/min
humidity range:	10% to 98% RH

Media Compatibility

✓ Electronic Components ✓ Automotive Parts ✓ Pharmaceutical Products

Unsuitable: Highly Corrosive Chemical Testing

Sizing Data Required

Maximum Product Dimensions (LxWxH)
Required Temperature Ramp Rates
Test Duration and Cycle Requirements

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause

Temperature control system failure

Cause: Compressor wear from continuous cycling, refrigerant leaks due to vibration-induced joint fatigue, or sensor drift from thermal stress and contamination.

Humidity system malfunction

Cause: Steam generator scaling from hard water deposits, humidifier element corrosion from chemical exposure, or condensation drain blockages from microbial growth and debris accumulation.

Maintenance Indicators

Temperature fluctuations exceeding ±1°C of setpoint during stable operation
Unusual compressor noises (knocking, grinding) or excessive vibration during cycling

Engineering Tips

Implement predictive maintenance with vibration analysis on compressors and motors, and regular calibration of temperature/humidity sensors using NIST-traceable standards
Use deionized water in humidity systems to prevent scaling, install pre-filters on intake air, and maintain clean condenser coils with scheduled compressed air or soft brush cleaning

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards

ISO 17025:2017 - General requirements for the competence of testing and calibration laboratories ASTM E595-15 - Standard Test Method for Total Mass Loss and Collected Volatile Condensable Materials from Outgassing in a Vacuum Environment IEC 60068-2-1:2007 - Environmental testing - Part 2-1: Tests - Test A: Cold

Quoted from the published standard.

Manufacturing Precision

Temperature Uniformity: ±0.5°C across working volume
Humidity Control: ±2% RH at specified setpoint

Quality Inspection

Temperature and Humidity Calibration Verification
Leak Testing for Chamber Integrity

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Environmental Test Chamber

12 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Yuanyao Technology

Dongguan, Guangdong (contact address), CN

The official website lists the YTH-080 to YTH-1000 programmable temperature-humidity chambers with air circulation, heating, refrigeration, humidification and dehumidification for electronics, automotive parts and materials. Match configuration to sample space, heat load and cycle profile and check the temperature-humidity envelope and full-load performance; vibration, salt spray, vacuum or pressure testing is not covered.