JianHu JH Series High-Low Temperature & Humidity Environmental Test Chamber

Overview

The JianHu JH Series High-Low Temperature & Humidity Environmental Test Chamber is an engineered solution for controlled thermal and hygrothermal stress testing of materials, components, and finished products across electronics, automotive, aerospace, pharmaceutical, and academic research applications. Based on dual-refrigerant cascade compression refrigeration and precision PID-controlled steam humidification, the chamber delivers stable, repeatable conditioning over a wide operational envelope—from cryogenic -70 °C to elevated +150 °C, with programmable relative humidity ranging from 10% to 98% RH (model-dependent). Its robust stainless-steel inner chamber, double-wall insulation, and leak-tested sealing system ensure long-term stability and minimal energy drift during extended test cycles. The chamber is designed for compliance-driven environments—supporting qualification protocols that require documented traceability, calibration validity, and environmental reproducibility under GLP, GMP, and ISO/IEC 17025 frameworks.

Key Features

• Wide temperature range: -70 °C to +150 °C, with optional humidity control (10–98% RH) for combined thermal-hygric stress testing
• High-precision temperature regulation: ±0.5 °C fluctuation, ±2.0 °C uniformity, and ±2.0 °C deviation across the working volume
• Cascade compressor refrigeration system enabling rapid cooling rates—down to -70 °C in as little as 45 minutes (standard configuration)
• Explosion-proof variants available (certified to IECEx and CNEx standards) for use with flammable solvents or volatile organic compounds
• Stainless-steel interior (SUS304), insulated double-wall construction, and reinforced observation window with anti-fog heating
• Programmable controller with 30-stage ramp-soak profiles, real-time data logging, and USB/Ethernet export capability
• Integrated safety systems: over-temperature protection, refrigerant pressure monitoring, door interlock, and emergency power cutoff

Sample Compatibility & Compliance

The JH Series accommodates a broad spectrum of test specimens—including PCB assemblies, lithium-ion battery cells, polymer composites, medical device housings, and optical sensors—without compromising thermal integrity or measurement fidelity. Internal dimensions are customizable per client specification (standard ranges from 100 L to 1000 L working volume), with options for cable/port penetrations, load-bearing shelves, and internal lighting. All models comply with core international environmental test standards, including IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-14 (thermal shock), ASTM D4332 (conditioning of plastics), and GB/T 2423 series (Chinese national equivalents). For regulated industries, optional validation packages include IQ/OQ documentation, sensor mapping reports (per ISO 17025 Annex A.4), and electronic audit trails compliant with FDA 21 CFR Part 11.

Software & Data Management

The embedded controller supports multi-segment temperature/humidity programming, real-time graphing, and event-triggered alarms. Optional PC-based software (JianHu TestSuite™) enables remote monitoring via TCP/IP, automated report generation (PDF/CSV), and integration with LIMS or MES platforms through OPC UA or Modbus TCP. All logged parameters—including chamber setpoint, actual temperature/humidity, compressor status, and alarm history—are time-stamped and cryptographically signed to satisfy data integrity requirements under GLP and GMP. Calibration certificates for integrated Pt100 sensors are NIST-traceable and provided with each unit; annual recalibration services are supported globally through JianHu’s certified service network.

Applications

• Electronics reliability: Thermal cycling of semiconductors, solder joint fatigue analysis, and moisture sensitivity level (MSL) testing per JEDEC J-STD-020
• Automotive component validation: Under-hood thermal endurance, battery thermal management system (BTMS) performance under extreme ambient conditions
• Pharmaceutical stability: ICH Q1A(R2)-compliant long-term and accelerated stability studies (25 °C/60% RH, 40 °C/75% RH)
• Material science: Glass transition temperature (Tg) screening, polymer aging kinetics, and coating adhesion assessment under cyclic humidity
• Aerospace qualification: Component screening per MIL-STD-810H methods 502.6 (cold), 503.6 (temperature shock), and 507.6 (humidity)
• Academic research: Controlled-environment experimentation in physics, chemistry, and biophysics laboratories requiring precise environmental replication

FAQ

What is the standard warranty period for the JH Series chamber?
JianHu provides a 12-month parts-and-labor warranty from commissioning date, extendable to 24 or 36 months under service agreement.
Can the chamber be validated for ISO 17025 accreditation?
Yes—factory-installed calibrated sensors, as-built drawings, uncertainty budgets, and IQ/OQ documentation packages are available upon request.
Is remote diagnostics supported?
All Ethernet-enabled units support secure remote access for firmware updates, parameter review, and diagnostic log retrieval via JianHu’s authorized service portal.
How is temperature uniformity verified during installation?
A 9-point sensor mapping test is performed at three load conditions (empty, 1/3 loaded, full load) per ISO 17025 Annex A.4, with results reported in the final commissioning certificate.
Are custom port configurations and internal modifications possible?
Yes—JianHu offers engineering consultation for non-standard penetrations, internal mounting rails, vacuum feedthroughs, and inert gas purge interfaces.