Programmable Touchscreen Temperature and Humidity Environmental Test Chamber

Overview

The Programmable Touchscreen Temperature and Humidity Environmental Test Chamber is an engineered environmental simulation system designed for rigorous reliability validation of electronic components, aerospace subsystems, automotive ECUs, industrial coatings, and advanced materials under controlled thermal and hygrothermal stress conditions. Based on the principle of forced-air convection combined with precision vapor compression refrigeration and steam-based humidification, this chamber delivers stable, repeatable, and traceable environmental profiles compliant with international test standards. Its architecture integrates a dual-stage cascade refrigeration system for extended low-temperature capability down to -70 °C, alongside PID-controlled steam humidification and dehumidification via refrigerant coil cooling — enabling precise replication of real-world climatic exposure sequences including steady-state, cycling, and gradient profiles. The chamber serves as a foundational tool in design verification, accelerated life testing, and qualification per MIL-STD-810, IEC 60068, and automotive OEM-specific protocols.

Key Features

• 7-inch high-resolution color TFT touchscreen controller with intuitive graphical interface and bilingual (English/Chinese) language support — supporting up to 99 programmable segments, 999 cycles, and user-defined ramp/soak profiles
• Full-spectrum temperature range options: standard models from 0 °C to +150 °C; extended-range variants down to -70 °C using R404A/R23 eco-friendly refrigerants in a hermetically sealed, low-noise dual-stage cascade compressor
• SUS#304 stainless steel construction for both interior and exterior chambers — corrosion-resistant, non-outgassing, and compatible with cleanroom-grade maintenance protocols
• Multi-layer tempered observation window with integrated conductive film heating to prevent condensation — ensuring unobstructed visual monitoring during high-humidity operation
• Dual-seal door system featuring high-tensile silicone gaskets and magnetic latching — achieving leak rate <0.5 cm³/min at 1 kPa differential pressure (per ISO 10137)
• Standard Ø50 mm test port on left wall with stainless steel flange and removable plug — facilitating external signal/power feedthrough without compromising chamber integrity
• Comprehensive safety architecture: real-time fault diagnostics, over-temperature/over-humidity cutoff, compressor high-pressure protection, and emergency power disconnect relay

Sample Compatibility & Compliance

This chamber accommodates diverse sample geometries — from PCB assemblies and battery modules to polymer specimens and coated metal panels — via configurable internal dimensions (40–100 L volume range) and two-tier stainless steel shelves with load capacity up to 30 kg per shelf. It meets structural and performance requirements of key military, industrial, and regulatory standards, including GJB 150.3 (high-temperature), GJB 150.4 (low-temperature), GJB 150.9 (damp heat), GB/T 2423.1–4 (IEC 60068-2 series equivalents), and ISO 16750-4 (road vehicles). All units undergo factory calibration against NIST-traceable references, with optional certification reports available for GLP/GMP environments. Humidity control accuracy and stability are validated per ISO 12100 and ASTM E145 Annex A3 methodologies.

Software & Data Management

The embedded controller logs timestamped temperature and humidity data at user-selectable intervals (1–600 seconds), storing up to 30 days of continuous records internally. Optional Ethernet or RS485 interfaces enable integration with centralized lab management systems (LIMS) or SCADA platforms. Data export is supported in CSV format for post-test statistical analysis (e.g., Cp/Cpk, Weibull modeling). For regulated industries, optional software add-ons provide 21 CFR Part 11-compliant audit trails, electronic signatures, and role-based access control — satisfying FDA, ISO 13485, and IATF 16949 documentation requirements.

Applications

• Qualification testing of avionics hardware per DO-160 Section 4 (temperature) and Section 10 (humidity)
• Accelerated aging of lithium-ion battery cells under combined thermal-hygrometric stress
• Coating adhesion and blistering evaluation per ASTM D714 and ISO 4628-2
• Thermal shock pre-conditioning prior to HALT/HASS execution
• Validation of IP67 enclosure integrity under cyclic damp heat (IEC 60529 + IEC 60068-2-30)
• Material compatibility screening for medical device packaging (ISO 11607-1)

FAQ

What temperature and humidity uniformity specifications are guaranteed across the working volume?

Uniformity is maintained at ±0.5 °C for temperature and ±2.5 %RH for humidity (measured per ISO 10137 at 15 points using calibrated reference sensors).

Can the chamber be integrated into an automated test cell with PLC-level control?

Yes — standard Modbus RTU (RS485) and optional Ethernet/IP or Profibus-DP interfaces support seamless integration with industrial control systems.

Is third-party calibration certification available upon delivery?

Factory calibration certificates traceable to national metrology institutes are included; UKAS or DAkkS-accredited calibration reports are available as an add-on service.

What is the expected mean time between failures (MTBF) for the refrigeration system?

The dual-stage hermetic compressor assembly has an MTBF rating of ≥15,000 hours under continuous operation at nominal load conditions.

Does the controller support custom test profile import via USB or network?

Yes — profiles can be imported/exported via USB flash drive in proprietary .PRF format or converted CSV files using the included PC configuration utility.