Thermal Shock Test Chamber – Generic Brand (Imported, TEMI Controller Equipped)

Overview

The Thermal Shock Test Chamber is an engineered environmental simulation system designed to evaluate material and component reliability under rapid, repetitive transitions between extreme high- and low-temperature conditions. It operates on the principle of dual-zone or single-chamber thermal shock methodology—where specimens are subjected to abrupt temperature shifts (typically −65°C to +150°C, dependent on configuration) within defined dwell times and transfer intervals. This accelerates failure mechanisms related to coefficient-of-thermal-expansion (CTE) mismatch, interfacial delamination, solder joint fatigue, and seal integrity degradation. The chamber meets foundational requirements for qualification testing in aerospace, automotive electronics, semiconductor packaging, and medical device manufacturing—where product resilience across operational thermal envelopes must be empirically verified prior to field deployment.

Key Features

• Two controller options: TEMI880 full-color touchscreen with bilingual interface (English/Chinese) and real-time trend graphing; or TEMI300 membrane keypad unit with English-only display and deterministic PID tuning.
• Robust refrigeration architecture featuring original Tecumseh hermetic compressors and optimized two-stage or single-stage air-cooled refrigerant circuits—ensuring stable low-temperature performance down to −70°C (optional) and minimizing maintenance frequency.
• Balanced Temperature & Humidity Control (BTSC) system enables precise coupling of heating, cooling, and humidification functions—critical for combined thermal-humidity shock protocols per IEC 60068-2-30.
• Forced-air circulation via multi-vane centrifugal blower and axial fans ensures ≤±0.5°C temperature uniformity (at steady state) across the working volume, validated per IEC 60068-3-5.
• Full-suspension inner chamber fabricated from fully welded AISI 304 stainless steel, sealed with dual silicone gaskets and insulated with low-conductivity mineral wool—achieving thermal loss <0.8 K/h at −40°C ambient.
• Integrated safety logic monitors compressor discharge temperature, refrigerant pressure, heater current, chamber over-temperature, and humidifier water level—triggering automatic shutdown and fault logging.

Sample Compatibility & Compliance

This chamber accommodates standard test specimens up to 300 mm × 300 mm × 300 mm (custom volumes available). The φ50 mm left-side cable port supports thermocouple feedthrough, power leads, or sensor signal transmission without compromising chamber integrity. All internal surfaces are electropolished and non-outgassing—suitable for cleanroom-adjacent use and compliant with ISO 14644-1 Class 8 requirements when operated in controlled environments. The system architecture supports audit-ready operation: event logs, setpoint history, alarm records, and user access levels are retained locally and exportable via USB or serial interface. While not pre-certified to FDA 21 CFR Part 11, the control software architecture permits integration with third-party electronic lab notebook (ELN) systems supporting ALCOA+ data governance principles.

Software & Data Management

The included PC-based control suite provides remote monitoring, script-based test sequencing (e.g., 100-cycle shock profile with variable dwell/transfer times), and real-time parameter overlay (chamber temp, humidity, compressor amps, etc.). Data is logged at user-defined intervals (1 s to 60 min) and exported in CSV or Excel-compatible formats. Firmware updates are performed via SD card or Ethernet connection. Audit trail functionality includes timestamped operator login/logout events, parameter modification history, and calibration verification records—supporting GLP/GMP-aligned validation documentation packages.

Applications

• Qualification of PCB assemblies and IC packages per JEDEC JESD22-A104 (Temperature Cycling) and A106 (Thermal Shock).
• Validation of adhesive bonds, conformal coatings, and potting compounds used in avionics enclosures.
• Accelerated life testing of lithium-ion battery modules under cold-start and hot-soak conditions.
• Stability assessment of pharmaceutical primary packaging (e.g., blister foil seals) under cyclic thermal stress.
• Material screening for automotive under-hood components exposed to diurnal thermal gradients.

FAQ

What is the typical temperature transition time between extremes?
Transition time depends on chamber volume and configuration—standard models achieve −40°C ↔ +85°C in ≤15 seconds (internal basket transfer) or ≤3 minutes (single-chamber air-shock mode), per IEC 60068-2-14 Annex B.
Can this chamber perform humidity-controlled thermal shock?
Yes—when equipped with the surface-evaporation humidifier and TEMI880 controller, it supports combined thermal-humidity shock profiles per IEC 60068-2-30, with RH control range 20–98% RH at +25°C to +85°C.
Is calibration traceability provided?
The chamber ships with a factory calibration certificate referencing NIST-traceable standards for temperature sensors (Pt100 class A) and humidity transducers (capacitive polymer). On-site calibration services and IQ/OQ documentation support are available upon request.
What electrical supply is required?
Standard configuration requires 3-phase 380 VAC ±10%, 50 Hz, with dedicated grounding. Voltage and phase tolerance specifications are documented in the technical manual to ensure compressor and heater stability.
How is data integrity ensured during long-duration tests?
Non-volatile memory retains all operational logs and alarm histories even during power interruption. Scheduled auto-backup to external USB storage is configurable, and checksum-verified data export prevents corruption during transfer.