Editorial Technical Reference

Thermal Chamber Assembly

This page explains how Thermal Chamber Assembly is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A controlled-environment enclosure designed to subject computer motherboards to precise temperature cycling during burn-in testing.

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Product Specifications

Technical details and manufacturing context for Thermal Chamber Assembly

Definition
The Thermal Chamber Assembly is a critical subsystem within the Automated Computer Motherboard Burn-In Tester that creates and maintains specific temperature profiles to stress-test motherboards, ensuring reliability by simulating extreme operating conditions and accelerating potential failure mechanisms. This component is engineered to accommodate standard ATX motherboard fixtures within its internal dimensions of 600 x 600 x 600 mm (W x D x H). It operates across a temperature range of -40 to 85 °C, with a temperature uniformity of ±2 °C measured at steady state per IEC 60068-3-5. The chamber achieves temperature ramp rates of 5 to 15 °C/min under no-load conditions, supported by heating power of 3 to 6 kW and cooling capacity of 2 to 5 kW at -40 °C with 40 °C ambient. Temperature sensing relies on Class A PT100 sensors with an accuracy of ±0.5 °C per IEC 60751, and control accuracy is maintained at ±1 °C at steady state. The assembly requires a three-phase power supply of 380–415 V AC (50/60 Hz) per IEC 60038, with electrical load capacity of 10–30 A per output socket, configurable. It operates within a relative humidity range of 20–80% RH (non-condensing) and offers ingress protection ratings of IP54 to IP65 per IEC 60529. The chamber housing is constructed from 304 stainless steel per ASTM A240, with corrosion-resistant interior, and the unit weighs between 150 and 300 kg depending on configuration. This directory entry provides reference values; actual model-specific parameters must be verified with the legal manufacturer or supplier. The assembly is intended for integration into burn-in test systems, and its performance should be validated against the specific test protocols and environmental conditions required for the target motherboard models.
Working Principle
The Thermal Chamber Assembly operates by using heating elements and refrigeration systems to rapidly cycle between high and low temperature setpoints. A programmable logic controller (PLC) monitors temperature sensors and adjusts heating or cooling output to follow predefined test protocols. The chamber's insulation and heat exchange surfaces ensure uniform temperature distribution, while the PLC maintains control accuracy within ±1 °C at steady state. The system is designed to accommodate standard ATX motherboard fixtures, and its performance parameters, such as ramp rate and uniformity, are specified under no-load conditions. Verification of actual performance should be conducted according to the manufacturer's specifications and relevant standards.
Common Materials
Stainless steel (chamber housing), Insulation materials (thermal barriers), Copper/aluminum (heat exchange surfaces), High-temperature plastics (internal fixtures)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Internal Dimensions (W x D x H)600 x 600 x 600 mmAccommodates standard ATX motherboard fixtures
Temperature Range-40–85 °CExtended range available on request
Temperature Uniformity±2 °CMeasured at steady state per IEC 60068-3-5
Temperature Ramp Rate5–15 °C/minUnder no-load conditions
Heating Power3–6 kWDepends on chamber size and insulation
Cooling Capacity2–5 kWAt -40°C with 40°C ambient
Temperature Sensor Accuracy±0.5 °CClass A PT100 sensorsIEC 60751
Control Accuracy±1 °CAt steady state
Power Supply380–415 V ACThree-phase, 50/60 HzIEC 60038
Electrical Load Capacity10–30 APer output socket, configurable
Relative Humidity Range20–80 % RHNon-condensing
Ingress ProtectionIP54–IP65Higher IP on requestIEC 60529
Chamber Material304 Stainless SteelCorrosion-resistant interiorASTM A240
Weight150–300 kgDepends on configuration

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
  • Insulated Chamber Housing
    Provides thermal isolation and structural integrity
    Material: Stainless steel with polyurethane insulation
  • Heating Element Array
    Raises chamber temperature according to programmed profiles
    Material: Nickel-chromium alloy heating wires
  • Refrigeration System
    Cools chamber to sub-ambient temperatures
    Material: Copper tubing with refrigerant
  • Temperature Sensors
    Monitor chamber temperature at multiple points for feedback control
    Material: Platinum resistance thermometers (PT100)
  • Air Circulation System
    Ensures uniform temperature distribution throughout chamber
    Material: Aluminum fan blades with brushless DC motor
  • Motherboard Fixture Tray Part
    Secures motherboards in position during testing
    Material: High-temperature resistant polymer
  • PLC Controller
    Runs the temperature profile and holds the ±1 ℃ steady-state band.

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 1.5 bar (sealed chamber operation)
other spec: Temperature ramp rate: 5-10°C/min, Humidity control: 20-80% RH (if equipped)
temperature: -40°C to +150°C (typical range for motherboard testing)
Media Compatibility
✓ Dry air/nitrogen environment ✓ Inert gas atmosphere (Argon) ✓ Low-concentration cleanroom air
Unsuitable: Corrosive chemical vapor environments (acid/alkali mists)
Sizing Data Required
  • Maximum motherboard dimensions (LxWxH)
  • Required temperature cycling profile (min/max temps, dwell times)
  • Number of units to be tested simultaneously

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Heating Element Degradation
Cause: Cyclic thermal stress and oxidation from repeated heating/cooling cycles, leading to element embrittlement, hot spots, and eventual burnout.
Seal Failure (Door or Chamber)
Cause: Compression set and hardening of elastomeric seals due to prolonged exposure to high temperatures, combined with mechanical wear from frequent door operation, resulting in loss of thermal integrity and temperature uniformity.
Maintenance Indicators
  • Significant temperature overshoot/undershoot or inability to maintain setpoint (±5°C or more deviation under stable conditions)
  • Audible arcing, buzzing from electrical components, or unusual mechanical noises from fans/blowers during operation
Engineering Tips
  • Implement a controlled cooldown protocol after high-temperature cycles to minimize thermal shock on heating elements and refractory materials, extending their fatigue life.
  • Establish a preventive maintenance schedule for seal inspection and replacement based on cumulative operational hours at elevated temperatures, rather than waiting for visible failure.

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 DIN 12880:2007 - Laboratory equipment; electrical heated drying ovens; safety requirements and testing

Quoted from the published standard.

Manufacturing Precision
  • Temperature Uniformity: +/-1.0°C across working volume
  • Chamber Door Seal Gap: ≤0.5mm when closed
Quality Inspection
  • Thermal Cycling Endurance Test (500 cycles minimum)
  • Leak Detection Test (helium mass spectrometry for vacuum chambers)

Manufacturers of Thermal Chamber Assembly

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Frequently Asked Questions

What is the internal dimension of the Thermal Chamber Assembly?

The internal dimensions are 600 x 600 x 600 mm (W x D x H), accommodating standard ATX motherboard fixtures. Confirm compatibility with your specific motherboard size.

What temperature range does the chamber support?

The chamber operates from -40 to 85 °C, with extended range available on request. Verify the required range for your test protocol with the manufacturer.

What is the temperature uniformity and control accuracy?

Temperature uniformity is ±2 °C at steady state per IEC 60068-3-5, and control accuracy is ±1 °C at steady state. These values are reference; actual performance may vary with load and configuration.

What power supply is required?

The chamber requires a three-phase power supply of 380–415 V AC (50/60 Hz) per IEC 60038. Electrical load capacity is 10–30 A per output socket, configurable. Ensure your facility meets these requirements.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

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