OK KS-TH-408 Rapid Temperature Change Chamber

Overview

The OK KS-TH-408 Rapid Temperature Change Chamber is an engineered environmental test system designed for accelerated thermal stress evaluation of electronic components, automotive modules, aerospace hardware, and industrial materials under controlled, repeatable, and traceable conditions. It operates on a dual-stage cascade refrigeration principle—utilizing independent high- and low-temperature circuits—to achieve precise, stable, and rapid thermal transitions across a wide operational envelope (−70°C to +150°C). The chamber supports both standard thermal cycling and high-speed ramp testing, with programmable linear or non-linear profiles ranging from 5°C/min to 30°C/min (model-dependent). Its aerodynamic airflow architecture—featuring multi-blade centrifugal circulation fans and optimized inlet/outlet ducting—ensures uniform temperature distribution (±2.0°C) and rapid recovery (<3 min) following door opening, critical for high-throughput qualification protocols.

Key Features

• Dual-stage cascade refrigeration system with Tecumseh (France) hermetic compressors and water-cooled condensation for consistent low-temperature performance down to −70°C
• Programmable ramp rates: selectable A–F configurations (5–30°C/min), configurable as linear or non-linear profiles via embedded controller
• High-efficiency air circulation: multi-wing centrifugal blower delivering laminar, turbulence-minimized flow—eliminating thermal stratification and ensuring spatial uniformity per IEC 60068-3-5
• Robust chamber construction: 1.2 mm SUS304 stainless steel inner liner; outer shell in cold-rolled steel with corrosion-resistant epoxy-powder coating
• Advanced insulation: 120 mm thick CFC-free polyurethane foam (thermal conductivity ≤0.022 W/m·K) minimizing heat leakage and energy consumption
• Comprehensive safety architecture: integrated refrigerant high/low pressure monitoring, compressor thermal overload cutoff, over-temperature/over-humidity interlock, water shortage detection, and real-time fault diagnostics with LED status indicators

Sample Compatibility & Compliance

The KS-TH-408 accommodates test specimens up to 600×850×800 mm (W×H×D), with load capacity optimized for electronics enclosures, PCB assemblies, battery packs, and small mechanical subassemblies. Optional humidity control (20–98% RH) enables combined temperature-humidity stress testing per MIL-STD-810H Method 507.6 and IEC 60068-2-30. All units are factory-calibrated and verified against national metrological standards (GB/T 5170.2–1996 and GB/T 5170.5–1996). The chamber meets structural and performance requirements of GB 11158–2006 (High-Temperature Test Chambers), GB/T 2423.1–2001 (Cold Testing), GB/T 2423.2–2001 (Dry Heat), and GB/T 2423.3–1993 (Damp Heat, steady state). Documentation includes full traceable calibration certificates and compliance declaration files suitable for internal QA audits and third-party certification submissions.

Software & Data Management

The chamber integrates a 7-inch color touchscreen HMI with embedded PID+FF (feedforward) control algorithm, supporting up to 99 programmable segments per profile and 100 stored test routines. Optional PC-based software (OK-EnviroLink™) provides remote monitoring, real-time data logging (sample interval: 1–60 sec), CSV export, and automated report generation compliant with GLP and ISO/IEC 17025 documentation requirements. Audit trail functionality records all user actions—including parameter changes, start/stop events, and alarm acknowledgments—with timestamp and operator ID. Data integrity safeguards include password-protected configuration modes and optional 21 CFR Part 11-compliant electronic signature modules for regulated environments.

Applications

• Qualification testing of automotive ECUs, ADAS sensors, and power electronics per AEC-Q200 and ISO 16750-4
• Thermal shock validation of solder joints, conformal coatings, and MEMS devices per IPC-9701 and JESD22-A104
• Reliability screening of lithium-ion battery cells and modules under dynamic thermal loading
• Material compatibility assessment for aerospace composites and adhesives exposed to extreme thermal gradients
• Process validation of reflow soldering equipment and thermal interface material (TIM) performance
• Accelerated life testing of medical device housings and sterilizable components per ISO 13485 Annex C

FAQ

What is the standard delivery lead time for the KS-TH-408?
Standard lead time is 6–8 weeks after order confirmation and deposit receipt, subject to final configuration review and factory scheduling.

Is humidity control included by default?
No—humidity capability is an optional add-on. Standard KS-TH-408 units operate as dry thermal chambers. Humidity range (20–98% RH) requires installation of steam generator, water purification module, and dedicated humidity sensor calibration.

Can the chamber be customized for non-standard ramp profiles or extended temperature ranges?
Yes. OK Instruments offers engineering customization including ultra-low ramp tolerance (±1.0°C), extended low-temp operation (−80°C), nitrogen purge integration, and ESD-safe configurations upon request.

What electrical infrastructure is required for installation?
AC 380 V ±10%, 3-phase 5-wire, 50/60 Hz. Minimum circuit breaker rating: 63 A. Water cooling requires continuous supply at 15–30°C, 3–5 bar pressure, and ≥2.5 m³/h flow rate with conductive grounding.

Does the system support IQ/OQ/PQ documentation packages?
Yes. Factory-applied IQ/OQ protocols (per ASTM E2500) are available as optional deliverables. PQ execution support—including sensor mapping, stability verification, and uncertainty analysis—is provided by OK’s certified field service engineers.