Yoyi GDW-1000L(A/B/C) High-Low Temperature and Humidity Cycling Environmental Test Chamber

Overview

The Yoyi GDW-1000L(A/B/C) High-Low Temperature and Humidity Cycling Environmental Test Chamber is an engineered solution for accelerated environmental stress testing of industrial components, electronic assemblies, optical devices, and material specimens under rigorously controlled thermal and hygrothermal conditions. Based on the principle of forced-air convection combined with precision vapor compression refrigeration and PID-regulated steam humidification, this chamber replicates real-world climatic extremes—including rapid temperature transitions, sustained high/low humidity exposure, and cyclic combinations thereof—to evaluate product reliability, functional integrity, and long-term storage stability. Designed in accordance with IEC 60068-2 series standards for environmental testing of electrotechnical products, the GDW-1000L supports both steady-state and dynamic test profiles required by automotive OEM specifications (e.g., GMW3172, Ford CETP), aerospace qualification protocols (MIL-STD-810H), and component-level validation per JEDEC JESD22-A104 and A119.

Key Features

• 100-segment programmable controller (TEMI brand) enabling complex multi-step temperature/humidity ramp-hold cycles with automatic transition logic and user-defined dwell times;
• Full-color 7-inch capacitive touch interface with intuitive graphical navigation, real-time trend visualization of temperature and humidity curves, and event logging;
• Triple-layer vacuum-insulated observation window with electric defrosting and interior LED lighting—ensuring unobstructed visual monitoring without thermal bridging or condensation interference;
• Robust thermal architecture: imported hermetic scroll compressor with R407C/R134a refrigerant blend, nickel-chromium alloy heating elements, and high-efficiency centrifugal circulation fan delivering ≤±2°C uniformity across the 1000 L working volume;
• Sealed chamber design featuring food-grade silicone gaskets rated for continuous operation from −60°C to +150°C, maintaining integrity without hardening, cracking, or adhesive migration;
• Structural durability: exterior cold-rolled steel with epoxy-polyester powder coating; interior 304 stainless steel with radius-cornered welds and removable adjustable shelves (standard configuration: 2 fixed + 13 sliding positions);
• Integrated safety system including independent over-temperature cutoff, audible/visual alarm triggers, timed power-off function, and automatic shutdown upon sensor failure or door-open detection.

Sample Compatibility & Compliance

The GDW-1000L accommodates a wide range of test specimens—from printed circuit boards and LED lighting modules to polymer composites and medical device housings—without requiring sample-specific fixtures. Its 1000 × 1000 × 1000 mm internal cavity provides ample clearance for stacked racks, vibration-isolated platforms, or cable-access configurations via the standard left-side Ø50 mm test port (sealed with silicone plug when unused). The chamber complies with ISO/IEC 17025 calibration traceability requirements when operated with NIST-traceable reference sensors. It supports GLP/GMP-aligned test execution through optional audit trail functionality (when paired with TEMI’s extended firmware package), meeting documentation expectations for FDA 21 CFR Part 11–governed validation studies in pharmaceutical packaging and biocompatibility assessment.

Software & Data Management

While the onboard TEMI controller delivers autonomous operation, optional RS485 or USB connectivity enables integration into centralized laboratory data acquisition networks. Compatible with Yoyi’s proprietary LabControl Suite (Windows-based), users can remotely configure test sequences, monitor live parameter streams, export CSV-formatted time-series logs with timestamps, and generate compliance-ready reports—including deviation alerts, cycle completion certificates, and statistical summaries (mean, min/max, standard deviation per segment). All data files are timestamped, digitally signed, and stored with immutable metadata—facilitating review during regulatory audits or internal quality reviews.

Applications

• Temperature cycling validation of automotive ECUs and ADAS sensors per ISO 16750-4;
• Humidity resistance testing of conformal-coated PCBs under 85°C/85% RH bias conditions (JEDEC J-STD-020);
• Accelerated aging of elastomeric seals and gasket materials per ASTM D395;
• Storage stability assessment of active pharmaceutical ingredients (APIs) and sterile barrier systems;
• Qualification of military-grade connectors and avionics enclosures under MIL-STD-810H Method 502.7 (Low Temperature) and Method 507.6 (High Humidity);
• Thermal shock screening of solder joints using programmable ramp rates (0.5–10°C/min) between extreme setpoints.

FAQ

What is the maximum allowable ramp rate between temperature setpoints?
The GDW-1000L supports programmable linear ramp rates from 0.5°C/min up to 10°C/min, depending on selected temperature range and load mass. Actual achievable rate may vary slightly under full-load or high-humidity conditions due to thermal inertia and latent heat absorption.
Can the chamber maintain 98% RH at −40°C?
No. Humidity control is physically limited above 0°C. At sub-zero temperatures, the chamber operates in dry-cold mode only; humidity functionality is disabled below +5°C to prevent ice formation on sensors and humidifier elements.
Is third-party calibration certification available?
Yes. Yoyi offers optional factory calibration with ISO/IEC 17025-accredited certificate (NIST-traceable), including as-found/as-left data for all primary temperature and humidity sensors, valid for 12 months.
Does the system support Ethernet or Wi-Fi connectivity?
Standard configuration includes RS485 and USB interfaces. Ethernet or Wi-Fi modules are available as custom-engineered add-ons subject to firmware compatibility verification and site-specific network security review.
What maintenance intervals are recommended for optimal performance?
Compressor oil inspection every 24 months; humidifier tank cleaning weekly; air filter replacement every 3 months; full system performance verification annually—especially prior to critical qualification runs or regulatory submissions.