HAIDA HD-E702-100B60 Programmable Temperature and Humidity Environmental Test Chamber

Overview

The HAIDA HD-E702-100B60 Programmable Temperature and Humidity Environmental Test Chamber is an engineered benchtop climatic test system designed for precise simulation of dynamic thermal and hygrometric stress conditions. It operates on the principle of controlled convective air circulation combined with dual-stage mechanical refrigeration, resistive heating, and steam-based humidification—enabling reproducible generation of temperature profiles from −60 °C to +150 °C and relative humidity levels from 20% to 98% RH. This chamber is purpose-built for accelerated environmental stress testing in compliance with internationally recognized standards including IEC 60068-2-1 (cold), IEC 60068-2-2 (dry heat), IEC 60068-2-3 (damp heat, steady state), and MIL-STD-810G Method 502.6 (low temperature) and Method 507.5 (humidity). Its architecture supports both static (constant) and dynamic (cyclic) test protocols, making it suitable for reliability validation of electronic components, polymer composites, automotive ECUs, aerospace fasteners, and medical device packaging under real-world transport and operational exposure scenarios.

Key Features

• Robust dual-wall construction: Interior and exterior chambers fabricated from 1.0 mm SUS304 stainless steel for corrosion resistance, cleanability, and long-term dimensional stability under thermal cycling.
• High-efficiency insulation: 100 mm polyurethane rigid foam core combined with 100 mm high-density glass fiber blanket, minimizing thermal bridging and ensuring low standby energy consumption.
• Dual-stage refrigeration system: Equipped with two imported Tecumseh (France) hermetic compressors and a mixed-refrigerant circuit (R404A/R23), enabling stable sub-zero operation down to −60 °C without liquid nitrogen or cascade dependency.
• Precision climate control: Digital PID + SSR coordinated control algorithm with auto-tuning capability; achieves temperature resolution of 0.01 °C and humidity resolution of 0.1% RH, with real-time deviation compensation.
• Intelligent humidification: Stainless-steel immersion heater with MgO-insulated NiCr element and automatic water replenishment via front-mounted reservoir; isolation-type design prevents contamination of test space.
• Human-centric interface: 7-inch full-color capacitive touchscreen controller supporting bilingual (English/Chinese) operation, graphical curve preview, segment-by-segment program editing, and up to 1200 programmable steps across 120 stored profiles.
• Comprehensive safety architecture: Includes overtemperature cutoff, fan overheat protection, phase failure detection, refrigerant high-pressure shutdown, leakage current monitoring, and automatic fault-triggered power-off with event logging.

Sample Compatibility & Compliance

The HD-E702-100B60 accommodates standard test specimens up to 20 kg distributed evenly across two adjustable stainless-steel wire mesh shelves (SUS304, perforated, load-rated). A Ø50 mm pass-through port with insulated plug enables external sensor cabling or power feedthrough without compromising chamber integrity. The double-layer vacuum-insulated observation window features integrated ITO conductive film for anti-fog operation during high-humidity cycles. The chamber meets structural and performance requirements of GB/T 2423.1–2008 (cold), GB/T 2423.2–2008 (dry heat), GB/T 2423.3–2016 (damp heat, cyclic), GJB 150.3A–2009 (low temperature), and GJB 150.4A–2009 (operating temperature). While not certified to ISO/IEC 17025, its metrological traceability supports GLP-compliant test documentation when operated with calibrated PT100 sensors and validated SOPs.

Software & Data Management

Data acquisition and reporting are facilitated through embedded firmware with built-in 2 GB SD card logging (expandable), supporting time-stamped CSV export of temperature/humidity/time series at user-defined intervals (1–600 seconds). The controller provides real-time graphical overlay of setpoint vs. actual values, residual time countdown per segment, and cumulative cycle tracking. RS232 and RS485 interfaces allow integration into centralized lab management systems (LIMS) or SCADA networks. Optional PC software (Windows 10/11 compatible) enables remote monitoring, multi-chamber synchronization, audit trail generation (with operator ID and timestamp), and report generation compliant with FDA 21 CFR Part 11 requirements—including electronic signatures, change history, and locked archival export.

Applications

This chamber is routinely deployed in quality assurance laboratories for: thermal shock pre-screening of PCB assemblies prior to burn-in; humidity-induced corrosion testing of metallic coatings per ASTM B117-derived protocols; shelf-life acceleration studies of pharmaceutical blister packs under ICH Q1A(R3) conditions; validation of adhesive bond strength retention in composite laminates after 1000-hour damp heat exposure; and functional verification of IoT sensor modules under combined low-temperature/high-RH storage conditions. Its rapid ramp rates (≥3 °C/min heating, ≥1 °C/min cooling) support MIL-STD-810G Method 511.6 (explosive atmosphere) preconditioning and automotive OEM thermal cycling specifications such as GMW14872 and Ford CETP 00.00-L-467.

FAQ

What is the maximum allowable sample volume inside the working chamber?
The internal workspace measures 400 mm × 500 mm × 500 mm (100 L), with usable volume reduced by airflow obstructions. For optimal uniformity, samples should occupy no more than 30% of total chamber volume and be placed centrally on the provided shelves.
Can this chamber operate continuously at −60 °C and 98% RH simultaneously?
No. Due to thermodynamic constraints, the achievable humidity range contracts at extreme temperatures. At −40 °C, maximum RH is limited to ~50%; at −60 °C, only dry cold operation is supported. Full 20–98% RH functionality is specified between −20 °C and +85 °C.
Is the controller firmware upgradeable in the field?
Yes. Firmware updates are delivered via USB flash drive using the built-in “System Update” utility. Version history and release notes are available upon request from HAIDA Technical Support.
Does the unit include NIST-traceable calibration documentation?
Factory calibration certificates (as-found/as-left) are supplied with each shipment. For ISO/IEC 17025-accredited calibration, third-party service is recommended annually using accredited labs with accredited PT100 probes and chilled mirror hygrometers.
What maintenance intervals are recommended for the refrigeration system?
Compressor oil and refrigerant charge require verification every 24 months under continuous operation. Desiccant filters should be replaced every 18 months. Full preventive maintenance—including evaporator coil cleaning, condenser fin inspection, and SSR contact resistance testing—is advised quarterly.