Yuelian PW-CTH32-40 Benchtop Temperature and Humidity Controlled Chamber

Overview

The Yuelian PW-CTH32-40 Benchtop Temperature and Humidity Controlled Chamber is an engineered environmental test system designed for precise, repeatable simulation of thermal and hygrothermal stress conditions in laboratory and quality assurance settings. Based on forced-air convection with independent PID-controlled heating, refrigeration, and humidification subsystems, the chamber delivers stable, programmable climate profiles across a wide operational envelope. Its compact footprint (W450 × H850 × D750 mm external) enables integration into space-constrained labs while maintaining compliance with key international environmental testing standards—including GB/T 2423.1, 2423.2, 2423.3, 2423.4, and 2423.34—as well as QC/T 413 and GB/T 5170.2–5170.5 verification protocols. The system employs a mechanical compression refrigeration cycle using R404A refrigerant (ODP = 0), air-cooled condensation, and chilled-coil dehumidification—ensuring traceable, low-drift control of both dry-bulb temperature and wet-bulb humidity without cross-interference between thermal and moisture regulation.

Key Features

• Compact benchtop architecture with stainless steel 304 inner chamber (8K mirror finish, seamless TIG welding) and structural aluminum frame for long-term corrosion resistance and dimensional stability.
• Dual-sensor PT100 platinum resistance thermometers and high-accuracy humidity transducers enable real-time feedback control with 0.1 °C/0.1 % RH resolution and ≤±1 °C / ≤±2 % RH deviation under standard ambient conditions (10–28 °C).
• Intelligent cold/hot balance control: Refrigeration and heating circuits operate independently via SSR-driven output; no simultaneous heating/cooling or humidifying/dehumidifying—reducing energy consumption by up to 35% versus conventional thermal-hydraulic balancing methods.
• 7-inch TFT color touchscreen controller (800 × 480 resolution) supporting up to 50 multi-segment programs (999 segments total), loop nesting (max 10-step chaining), and slope-based ramp/soak profiles with user-defined rate limits.
• Integrated noise suppression: Compressor mounted on vibration-damping springs; insulated refrigeration compartment lined with Class 0 FOAMGLAS® acoustic insulation; flexible refrigerant hoses and optimized piping layout minimize mechanical resonance.
• Full safety redundancy: Independent over-temperature protection for test samples and heaters; high-pressure and overload cutoffs for compressors; dry-run prevention for humidifiers; leak-proof water filtration (RO + activated carbon); and dual-level grounding (<4 Ω).

Sample Compatibility & Compliance

The PW-CTH32-40 supports non-hazardous, non-corrosive, non-biological, and non-EMI-emitting specimens only—strictly excluding flammable, explosive, volatile, or chemically aggressive materials per IEC 60068-3-5 and ISO 16750-4 safety guidelines. Its 32 L working volume accommodates small electronic components, PCB assemblies, polymer samples, optical sensors, and medical device subassemblies—provided loading does not obstruct airflow (minimum 10 cm clearance from inlet/outlet vents). All operational parameters meet GLP-aligned calibration traceability requirements, with factory-certified verification reports issued per GB/T 5170.2 and GB/T 5170.5 test procedures. Optional audit-ready data logging complies with FDA 21 CFR Part 11 when paired with validated software export functions.

Software & Data Management

The embedded controller firmware includes native data logging (24-hour continuous storage for 300 days), automatic XLS-formatted curve generation, and USB/LAN/RS-485 connectivity. Local USB ports support direct printing and U-disk-based data extraction; LAN interface enables centralized monitoring of up to 16 units via standard TCP/IP without dedicated server infrastructure. Remote diagnostics are supported through browser-accessible web interface (IE/Chrome/Firefox) using static or DHCP-assigned IP. All logged datasets include timestamped metadata (setpoint, actual value, alarm status, output power %), and feature configurable retention policies. Optional software validation packages available for GMP environments requiring IQ/OQ documentation and electronic signature capability.

Applications

This chamber serves critical roles in product development, incoming inspection, and reliability qualification workflows—particularly for automotive electronics (per QC/T 413 thermal cycling), consumer IoT modules, printed circuit board solder joint integrity assessment, battery cell shelf-life modeling, and packaging material permeability evaluation. It is routinely deployed for accelerated aging per ASTM D4332 (conditioning of plastics), preconditioning prior to mechanical shock/vibration tests, and stabilization of reference standards before metrological calibration. Its ability to maintain stable 10–85 °C / 20–98 % RH operating zones—without evaporator defrost interruption—makes it suitable for extended steady-state humidity exposure studies required in IPC-9701 and JEDEC JESD22-A101.

FAQ

What is the maximum sample weight the chamber can support?

The internal shelf is rated for 10 kg distributed load, provided placement maintains ≥10 cm clearance from all air inlets and outlets.

Does the unit comply with FDA 21 CFR Part 11 for electronic records?

Out-of-the-box USB/LAN data export meets basic ALCOA+ principles; full Part 11 compliance requires installation of validated third-party audit-trail software and administrative controls.

Can the chamber perform rapid temperature transitions?

Yes—achieving −40 °C to +100 °C in ≤35 minutes (heating) and +20 °C to −40 °C in ≤45 minutes (cooling), both measured under no-load conditions per GB/T 5170.2.

Is external water supply required for operation?

No—the integrated 10 L reservoir with RO + activated carbon filtration supports fully autonomous operation; distilled or deionized water (≥500 MΩ·cm resistivity) is recommended.

What maintenance intervals are recommended?

Bi-weekly cleaning of humidifier basin and water tank; quarterly inspection of condenser coil and compressor mounting; annual recalibration of PT100 and humidity sensors using NIST-traceable references.