Jianhu JTH-100P-ER Environmental Stress Screening Chamber — High-Low Temperature & Humidity Cycling Test System

Overview

The Jianhu JTH-100P-ER Environmental Stress Screening (ESS) Chamber is an engineered solution for accelerated reliability testing under controlled thermal and hygrothermal stress conditions. Designed in accordance with the fundamental principles of thermodynamic equilibrium and psychrometric control, it employs a balanced heating–cooling–humidification methodology to achieve precise, repeatable environmental profiles. Unlike open-loop or on/off-controlled chambers, this system dynamically modulates refrigerant flow, electric heater output, and steam-based humidification to maintain target setpoints without overshoot or prolonged stabilization delays. Its architecture supports both steady-state and cyclic test protocols—including temperature cycling (TC), humidity cycling (HC), and combined high-low temperature/humidity (HLTH) sequences—making it suitable for qualification testing per MIL-STD-810G Method 502.6 (Low Temperature), Method 501.6 (High Temperature), and Method 507.6 (Humidity). The chamber’s operational envelope spans –70°C to +150°C and 20–98% RH, enabling simulation of real-world field exposures across aerospace, automotive electronics, medical device packaging, and semiconductor manufacturing supply chains.

Key Features

• Double-walled construction with outer cold-rolled steel (powder-coated) and inner SUS304# mirror-finish stainless steel—corrosion-resistant and non-outgassing for cleanroom-compatible operation.
• High-efficiency insulation using dual-layer thermal barrier: rigid polyurethane (PU) foam (≥30 mm thickness) + high-density fiberglass matting—minimizes heat leakage and improves energy efficiency by >22% vs. conventional single-layer designs.
• Triple-pane vacuum-insulated observation window with integrated ITO (indium tin oxide) electrothermal defogging film and LED backlighting—ensures unobstructed visual monitoring during condensing or sub-zero operations.
• 7-inch TFT-LCD touchscreen HMI with intuitive graphical interface; supports up to 99 programmable segments per cycle, 100 stored profiles, and real-time trend logging of T/RH/pressure/dew point.
• Intelligent PID+ fuzzy logic controller with auto-tuning capability and self-diagnostic fault codes—reduces setup time and eliminates manual parameter optimization.
• Modular refrigeration architecture: independent heating and cooling circuits prevent thermal cross-interference; optional dual-stage cascade system available for extended low-temperature performance down to –70°C.
• Forced-air circulation via multi-blade centrifugal fan (frequency-inverter driven) with side-intake/side-exhaust airflow path—ensures uniformity of ≤±1.0°C and ≤±3% RH across the working volume (per IEC 60068-3-5).

Sample Compatibility & Compliance

The JTH-100P-ER accommodates samples up to 15 kg mass and 35 L volume within its 100 L internal workspace. Its non-reactive stainless-steel interior and segregated humidification circuitry eliminate contamination risks for sensitive substrates such as PCB assemblies, lithium-ion battery cells, optical coatings, and polymer-based medical components. All electrical and mechanical subsystems comply with CE marking requirements (EMC Directive 2014/30/EU, Low Voltage Directive 2014/35/EU). The chamber meets full traceability requirements for GLP and GMP environments when paired with optional 21 CFR Part 11-compliant software modules—supporting electronic signatures, audit trails, and data integrity validation per ALCOA+ principles. It is certified to execute standardized test methods including GB/T 2423.1 (cold), GB/T 2423.2 (dry heat), GB/T 2423.3 (constant damp heat), GB/T 2423.4 (cyclic damp heat), and IEC 60068-2-30 (damp heat, cyclic).

Software & Data Management

Equipped with RS-232 and optional RS-485/Ethernet interfaces, the JTH-100P-ER integrates seamlessly into centralized lab management systems (LIMS) and MES platforms. Standard firmware includes built-in data logging at user-defined intervals (1 s to 60 min), with CSV export capability and timestamped event tagging (e.g., door opening, alarm activation, profile completion). Optional Jianhu ESS-Link™ software provides remote monitoring, multi-chamber synchronization, automated report generation (PDF/Excel), and compliance-ready documentation packages aligned with ISO/IEC 17025 Clause 7.7. Audit trail records capture operator ID, parameter changes, calibration events, and system errors—with immutable storage and password-protected access levels (administrator/operator/viewer). Raw sensor data is retained for ≥18 months without compression, satisfying long-term retention mandates for automotive AEC-Q200 and aerospace AS9100D audits.

Applications

This chamber serves as a core tool in product development, quality assurance, and failure analysis workflows. Typical use cases include: thermal shock screening of BGA solder joints; moisture ingress evaluation of conformal-coated electronics; accelerated aging of elastomeric seals under combined thermal-hygric stress; validation of thermal interface materials (TIMs) across operating temperature bands; environmental stress screening (ESS) of avionics modules prior to HALT/HASS; and qualification testing of EV battery packs per UN38.3 Section 38.3.3 (temperature cycling). It is widely deployed in Tier-1 automotive suppliers, defense contractors certified to AS9100, and ISO 13485-certified medical device manufacturers performing biocompatibility-related environmental conditioning.

FAQ

What standards does the JTH-100P-ER meet for temperature and humidity uniformity?

Per IEC 60068-3-5, the chamber achieves ≤±1.0°C spatial uniformity and ≤±3% RH deviation across the working volume at steady state—verified during factory acceptance testing with NIST-traceable PT100 probes.

Can the system be validated for IQ/OQ/PQ protocols?

Yes. Comprehensive validation documentation—including URS, FDS, SAT, and protocol templates—is provided. Optional third-party IQ/OQ services are available through Jianhu’s ISO/IEC 17025-accredited partner network.

Is remote firmware update supported?

Firmware updates require local USB connection and administrator-level credentials; no over-the-air (OTA) functionality is implemented to ensure cybersecurity compliance per IEC 62443-3-3.

What is the expected service life of the refrigeration system?

With scheduled preventive maintenance (biannual oil analysis, filter replacement, leak detection), the compressor and refrigerant loop are rated for ≥15,000 operational hours—equivalent to ~8 years of continuous 8-hour/day usage.

Does the chamber support ramp-soak-dwell profiles with humidity modulation?

Yes. Full 3D profile programming allows independent scheduling of temperature ramps, dwell periods, and concurrent RH transitions—including dew point tracking and condensation control modes.