HESON HS-1000B Large-Scale Temperature and Humidity Controlled Environmental Test Chamber

Overview

The HESON HS-1000B is a large-volume upright environmental test chamber engineered for precise, long-duration simulation of temperature and humidity stress conditions in accordance with international reliability testing standards—including MIL-STD-810G, IEC 60068-2, and GJB 150A-2009 (specifically Methods 3 and 4 for temperature and humidity exposure). It operates on a dual-stage refrigeration architecture—employing either single-stage or cascade compression systems—to achieve stable thermal-hygrometric control across wide operational ranges. The chamber’s core function is to subject electronic components, automotive subsystems, polymer composites, metallic alloys, and elastomeric materials to accelerated aging, condensation cycling, and steady-state environmental stress, thereby enabling quantitative assessment of functional integrity, dimensional stability, corrosion resistance, and interfacial adhesion under defined climatic profiles.

Key Features

• Robust structural design with inner chamber constructed from SUS#304 stainless steel and outer enclosure combining SUS#304 with powder-coated finish and high-density PU insulation (≥100 mm thickness) for minimized thermal bridging and energy loss.
• Dual independent control loops: PID-regulated heating via high-efficiency stainless-steel sheathed heaters; precision humidity modulation via surface-evaporation humidification system with auto-water-level monitoring and anti-dry-burn protection.
• Cascade refrigeration system utilizing original French Tecumseh or German Copeland semi-hermetic compressors (R134a/R404a/R23 compliant), optimized for extended service life and reduced maintenance frequency over conventional single-stage configurations.
• High-uniformity air distribution achieved through axial-flow fans and side-blow/recirculating airflow path—ensuring ≤±2.0°C temperature uniformity and ≤±3.0% RH uniformity across the full 100 × 100 × 100 cm working volume.
• Integrated safety architecture including over-temperature/over-humidity cutoff, compressor high-pressure and overheat protection, fan motor thermal cutout, leakage current interruption, and fuse-based overload safeguards—all logged with nine diagnostic fault codes displayed in real time.
• RS-232 serial interface supporting bidirectional communication with Windows-based control software for remote program editing, real-time data logging, event-triggered alarms, and automated start/stop sequencing.

Sample Compatibility & Compliance

The HS-1000B accommodates bulky or multi-unit test specimens—including ECUs, battery modules, HVAC housings, and structural composite panels—via its 1 m³ internal workspace and standard 50 mm cable port. Internal shelving (2× adjustable stainless-steel racks) supports flexible load configuration without compromising airflow integrity. All operational parameters comply with traceable calibration protocols aligned with ISO/IEC 17025 requirements. The controller firmware supports audit trail generation and user-access-level management—facilitating GLP/GMP-aligned validation documentation per FDA 21 CFR Part 11 when paired with validated software packages.

Software & Data Management

The standard color touchscreen controller features bilingual (English/Chinese) programmable logic with up to 999 segments per test profile, including ramp-soak cycles, step changes, and humidity-temperature correlation modes. Optional PC software enables export of time-stamped CSV datasets with timestamp resolution ≤1 second, linear analog outputs (0–10 V DC) for external dataloggers, and configurable alarm thresholds with email/SMS notification integration (via optional gateway module). Raw sensor data—including chamber air temperature, relative humidity, and compressor discharge pressure—is archived with metadata (operator ID, test ID, version stamp) to support ISO 9001 clause 8.5.2 and IATF 16949 clause 8.5.1.2 traceability mandates.

Applications

• Accelerated life testing of printed circuit board assemblies (PCBAs) under combined thermal-hygric stress per IPC-9592B.
• Validation of sealant and gasket performance in automotive lighting modules per SAE J2044.
• Pre-conditioning of lithium-ion battery cells prior to cycle-life evaluation (UN 38.3 Section 38.3.4).
• Material compatibility screening for aerospace fasteners exposed to tropical maritime environments (MIL-STD-810G Method 507.6).
• Stability assessment of medical device enclosures per ISO 11607-1 Annex C during packaging validation.
• Environmental stress screening (ESS) of avionics hardware per RTCA DO-160G Section 4 and 5.

FAQ

What is the maximum allowable ambient operating temperature for the HS-1000B?

The unit must be installed in an environment maintained between +5°C and +30°C, with relative humidity not exceeding 85% RH non-condensing.
Does the chamber support programmable humidity ramping independent of temperature?

Yes—the controller permits decoupled humidity ramp rates (e.g., 10% RH/min) within the 20–98% RH range, synchronized or asynchronous with thermal profiles.
Is third-party calibration certification available upon delivery?

HESON provides NIST-traceable factory calibration reports for temperature and humidity sensors; on-site UKAS or A2LA-accredited calibration services are available as an add-on option.
Can the analog output signals be configured for custom DAQ systems?

The 0–10 V DC outputs are assignable to any combination of chamber temperature, relative humidity, or compressor status—configurable via the controller’s I/O setup menu.
What refrigerant options are supported for export-compliant installations?

Standard configurations use R134a (for -20°C models) or R404a/R23 blends (for -40°C and -70°C variants), all compliant with EU F-Gas Regulation (EU) No 517/2014 and EPA SNAP Program requirements.