Programmable Temperature and Humidity Controlled Chamber – OEM/ODM Customizable Environmental Test Chamber

Overview

The Programmable Temperature and Humidity Controlled Chamber is an engineered environmental test system designed for precise, repeatable simulation of climatic conditions across defined temperature and relative humidity (RH) ranges. Based on the principle of balanced heating, cooling, humidification, and dehumidification—implemented via a Bi-Directional Thermal & Humidity Control (BTHC) architecture—the chamber maintains setpoint stability through proportional-integral-derivative (PID) control of solid-state relays (SSRs). It operates under ISO/IEC 17025-aligned calibration traceability frameworks and meets the metrological verification requirements specified in GB/T 5170.2 (temperature) and GB/T 5170.5 (humidity), ensuring data integrity for quality assurance, product validation, and regulatory submissions.

Key Features

• Full-arc ergonomic enclosure design with high-gloss finish and flush-mount, non-reactive door handles for enhanced operator safety and cleanroom compatibility.
• Imported multi-function touchscreen controller with intuitive navigation, real-time trend logging, and dual-language UI (English/Chinese) — supporting up to 99 programmable segments per test profile.
• BTHC control algorithm dynamically balances thermal load and moisture mass transfer, minimizing overshoot and stabilizing chamber conditions at ±0.3°C / ±2% RH (typical, unloaded, 25°C ambient).
• Capillary-tube-based refrigeration circuit with automatic capacity modulation — superior to thermostatic expansion valve (TXV) systems in transient response, long-term reliability, and low-maintenance operation.
• Modular construction enables fully customizable internal dimensions, door configuration, observation windows, and I/O ports for sensor integration or external monitoring interfaces.
• Cooling water interface compliant with 10–28°C inlet temperature and 0.1–0.3 MPa pressure range — optimized for stable sub-zero operation down to –70°C.

Sample Compatibility & Compliance

This chamber accommodates a broad spectrum of physical samples including electronic assemblies, polymer components, pharmaceutical packaging, battery modules, and aerospace composites. Its performance envelope conforms to internationally recognized environmental stress screening (ESS) and qualification testing standards, including but not limited to:

• IEC 60068-2-1 (Cold Test), IEC 60068-2-2 (Dry Heat), IEC 60068-2-30 (Damp Heat, Cyclic)
• ASTM D4332 (Conditioning Containers and Packages)
• USP and environmental monitoring prerequisites for sterile compounding facilities
• ISO 14644-1 Class 8 (100,000) cleanroom-compatible airflow management

All reported temperature ramp rates (e.g., 3°C/min average from –40°C to +85°C) are measured under no-load, ambient-conditioned (25°C ±6°C) reference states per GB/T 5170.2. Actual performance varies with specimen thermal mass, surface emissivity, and internal airflow obstruction.

Software & Data Management

The embedded controller supports USB export of time-stamped CSV logs (temperature, RH, setpoints, alarm events) with optional Ethernet/Wi-Fi connectivity for remote supervision. Optional PC-based software provides advanced analysis tools—including deviation mapping, statistical process control (SPC) charts, and automated report generation compliant with GLP/GMP audit trails. Data integrity safeguards include password-protected user roles, electronic signature support, and immutable event logs aligned with FDA 21 CFR Part 11 requirements when configured with validated firmware.

Applications

• Accelerated life testing of consumer electronics under combined thermal-hygric stress
• Stability studies for medical devices and active pharmaceutical ingredients (APIs)
• Validation of packaging barrier properties (e.g., moisture vapor transmission rate)
• Pre-compliance screening for automotive ECUs per ISO 16750-4
• Material characterization of hygroscopic polymers and composites
• Environmental qualification of avionics per RTCA DO-160 Section 4 & 5

FAQ

What is the lowest operational temperature achievable with this chamber?
Standard configurations support –70°C; extended low-temperature variants with cascade refrigeration are available upon request.
Does the chamber meet international calibration traceability requirements?
Yes — factory calibration certificates reference NIST-traceable standards, and third-party verification per ISO/IEC 17025 is available as an add-on service.
Can the chamber be integrated into a central laboratory monitoring network?
Yes — Modbus TCP, RS-485, and optional OPC UA protocols enable seamless integration with LIMS or SCADA platforms.
Is validation documentation (IQ/OQ/PQ) provided?
Comprehensive validation templates and on-site protocol execution support are offered as part of the commissioning package.
What maintenance intervals are recommended for optimal performance?
Compressor oil and refrigerant checks every 12 months; capillary filter replacement every 24 months; annual recalibration of humidity sensors using saturated salt solutions.