Derui Testing DR-H202-V25 Walk-in Environmental Test Chamber

Overview

The Derui Testing DR-H202-V25 is a high-capacity, floor-standing walk-in environmental test chamber engineered for rigorous thermal validation, reliability screening, and accelerated aging of industrial components, automotive modules, aerospace subsystems, and large-scale electronic enclosures. It operates on the principle of forced-air convection with dual-duct air distribution and precision PID-controlled heating/cooling loops, enabling stable, repeatable temperature profiles across its 11 m³ internal volume (2500 × 2200 × 2000 mm). Designed to meet the physical and operational demands of ISO/IEC 17025-accredited laboratories and production QA facilities, the chamber supports both steady-state and dynamic thermal cycling protocols—including rapid ramping at up to 3 °C/min—while maintaining uniformity within ±2 °C throughout the working space. Its structural architecture complies with mechanical load-bearing requirements per GB/T 2423.1–2001 (cold), GB/T 2423.2–2001 (heat), and GJB 150.3/150.4 (military-grade thermal extremes), making it suitable for pre-compliance verification prior to formal certification testing.

Key Features

• Robust structural frame fabricated from welded channel steel, rated for static loads exceeding 1,500 kg—including operator ingress/egress and heavy test fixtures
• Double-wall construction: inner liner of brushed 304 stainless steel (SUS304) and outer cladding in galvanized color-coated steel or optional 304 stainless finish
• High-efficiency insulation using rigid polyurethane foam (density ≥40 kg/m³, thermal conductivity ≤0.022 W/m·K) with seamless joint sealing to minimize thermal bridging
• Modular air-handling unit housing all critical climate control components—centrifugal circulation fans, finned-tube electric heaters, and direct-expansion refrigeration coils—with SUS304 enclosure and surface hairline finish
• Dual-door access system with dual-action handles (internal/external release), magnetic gasket seals, and integrated anti-fog viewing window (400 × 500 mm, tempered glass with resistive heating element)
• Standard 50 mm diameter test port with brass flange, silicone O-ring seal, and removable blanking plug; configurable for signal feedthrough, sensor cabling, or compressed air supply
• Comprehensive safety suite: high/low pressure cutouts for refrigerant circuit, overtemperature protection (independent bimetal switch), phase failure detection, compressor overload relay, and audible/visual fault alert system

Sample Compatibility & Compliance

The DR-H202-V25 accommodates full-size automotive ECUs, server racks, HVAC assemblies, battery packs (up to 1.2 m tall), and multi-unit consumer electronics configurations. Its open-floor layout and 1,800 mm clear doorway height permit forklift-assisted loading without disassembly. The chamber is fully compliant with national and international environmental stress standards, including GB/T 2423.1–2001 (cold), GB/T 2423.2–2001 (heat), GB/T 2423.4–2008 (damp heat, cyclic), and GJB 150.3–1986 / GJB 150.4–1986. While not certified to IEC 60068-2-1/-2 by default, its performance envelope aligns with the test severity levels defined in those standards. For GLP/GMP-regulated environments, optional audit-trail-enabled controllers support 21 CFR Part 11 compliance when paired with validated software packages.

Software & Data Management

Equipped with a 7-inch color LCD programmable controller (standard), the system supports up to 99 programmable segments per profile, with ramp/soak logic, loop repetition, and real-time deviation alarms. Optional Ethernet or RS485 interfaces enable integration into centralized MES or LIMS platforms via Modbus RTU/TCP. Data logging resolution is configurable down to 1-second intervals, with onboard storage for ≥30 days of continuous timestamped temperature records (CSV export via USB). Third-party SCADA compatibility is verified for Ignition, Siemens Desigo CC, and Schneider EcoStruxure Building Operation systems. Calibration reports—including as-found/as-left data and uncertainty budgets—are generated per ISO/IEC 17025 Annex A.3 guidelines upon request.

Applications

• Thermal endurance validation of EV battery modules under ISO 16750-4 and UN ECE R100 thermal shock conditions
• Pre-shipment burn-in testing of telecom base station cabinets per Telcordia GR-3108
• Environmental stress screening (ESS) of avionics LRUs per MIL-STD-810H Method 501.7 and 502.7
• Long-duration humidity exposure testing of medical device enclosures (IEC 60601-1 Clause 11.2)
• Material coefficient-of-thermal-expansion (CTE) characterization of composite laminates and PCB substrates
• Stability assessment of calibration standards and reference materials in metrology labs

FAQ

What is the standard refrigeration configuration for the DR-H202-V25?
Water-cooled R404A/R23 cascade refrigeration system with dual compressors, condenser water inlet temperature range 10–32 °C, and flow rate ≥12 L/min.
Can the chamber be configured for combined temperature/humidity testing?
Yes—optional humidification system (steam generator + dry/wet bulb RH control) extends capability to 20–95% RH at temperatures between +10 °C and +85 °C; full spec sheet available upon technical inquiry.
Is remote monitoring supported out of the box?
The base controller includes local Ethernet port; remote access requires optional secure gateway module and TLS-enabled firmware update.
What maintenance intervals are recommended for long-term reliability?
Refrigerant oil change every 36 months; condenser coil cleaning quarterly; door gasket inspection biannually; annual NIST-traceable sensor recalibration.
Does Derui Testing provide installation and commissioning services internationally?
Yes—factory-trained engineers offer turnkey site commissioning, IQ/OQ documentation support, and on-site operator training packages for APAC, EMEA, and LATAM regions.