Yuelian PW-CTS2-19-40A Dual-Chamber Air-Cooled Thermal Shock Test Chamber

Overview

The Yuelian PW-CTS2-19-40A is a compact dual-chamber air-cooled thermal shock test chamber engineered for R&D laboratories and reliability engineering teams requiring precise, repeatable, and energy-efficient temperature cycling validation. Unlike conventional single-chamber or liquid-cooled systems, this model implements a physically separated high-temperature reservoir (+60 °C to +150 °C) and low-temperature reservoir (−40 °C to 0 °C), enabling rapid, deterministic thermal transitions without thermal inertia interference. Its core operation relies on pneumatic basket transfer between chambers—fully compliant with IEC 60068-2-14 (Test N: Change of Temperature) and aligned with ASTM D5229/D5229M for composite material qualification. The system employs on-demand refrigeration via pulse-width modulated compressor control, eliminating continuous high-power heating/cooling conflict and reducing operational energy consumption by up to 35% compared to legacy “freeze-balance” architectures. All thermal performance metrics—including stability, uniformity, and transition time—are verified under no-load, ambient 25 °C conditions per IEC 60068-3-5.

Key Features

• Dual independent chambers: Stainless steel (SUS 304) hot and cold reservoirs with separate insulation—24k glass wool for high-temp zone; PU foam + glass wool composite for low-temp zone.
• Energy-optimized thermal regulation: Patented on-off refrigerant flow control using Danfoss expansion valves and Tecumseh/Tecumseh-type hermetic compressors (R404A/R23 blend), eliminating wasteful simultaneous heating/cooling.
• High-speed pneumatic actuation: Basket transfer completed in ≤5 seconds; chamber switching achieved in ≤15 seconds—critical for qualifying solder joints, MEMS packaging, and PCB interconnect integrity.
• Robust mechanical architecture: Teco motor-driven forced-air circulation with extended stainless shaft and backward-curved SIROCCO fan; double-sealed silicone gasket doors with embedded SUS 304 handles.
• Comprehensive safety redundancy: 12-layer protection including compressor high-pressure cutout, heater dry-run prevention, phase failure detection, overcurrent circuit breakers, and independent overtemperature limiters.
• Modular service design: Nitrogen-purged brazed refrigeration loop; vacuum-pumped dual-stage rotary vane evacuation; condensate drainage via rear-mounted external outlet.

Sample Compatibility & Compliance

The PW-CTS2-19-40A accommodates electronic assemblies (PCBs, BGAs, QFNs), polymer components, optical housings, and small-scale automotive sensors (up to 300 mm diagonal). Its 19 L internal volume supports standard JEDEC trays and MIL-STD-883 sample fixtures. Temperature sensor placement follows IEC 60068-3-5 Annex B—RTD probes mounted at air outlet locations ensure traceable thermal mapping. The chamber meets ISO/IEC 17025 prerequisite conditions for accredited environmental testing labs and supports GLP-compliant audit trails when paired with optional data logging software. While not certified to UL 61010-1 out-of-box, its electrical architecture complies with EN 61000-6-3 (EMC emission) and EN 61000-6-2 (immunity) standards.

Software & Data Management

The integrated 7-inch true-color LCD PLC controller (800×480 resolution) runs a deterministic real-time OS with multi-loop PID tuning. It supports 127 programmable profiles, each with up to 99 segments and 32,000-cycle repetition depth. Temperature resolution is 0.1 °C; time resolution is 1 minute. Data logging includes timestamped PV/SV traces at user-defined intervals (30–300 sec), stored internally in battery-backed RAM (90-day continuous history at 1-min sampling) and exportable via hot-swappable USB 2.0 (1–32 GB). RS-232/RS-485 interfaces enable SCADA integration, remote monitoring, and synchronized multi-chamber control. Optional Windows-based PC software (compatible with Win10/11) provides curve overlay, statistical deviation analysis (±σ reporting), and PDF report generation—fully compatible with FDA 21 CFR Part 11 requirements when configured with digital signature and audit trail modules.

Applications

This chamber serves critical qualification workflows across aerospace electronics (DO-160 Section 25), automotive ECUs (ISO 16750-4), medical device sterilization packaging (ISO 11607), and semiconductor reliability screening (JESD22-A104). Typical use cases include: accelerated life testing of conformal coatings under thermal fatigue; validation of adhesive bond strength in optoelectronic subassemblies; assessment of CTE mismatch failure modes in heterogeneous packaging; and verification of thermal cycling endurance for Li-ion battery management ICs. Its compact footprint and air-cooled design make it suitable for cleanroom-adjacent R&D labs where water infrastructure or floor loading constraints prohibit chiller-based systems.

FAQ

What is the minimum dwell time required per temperature stage?

The system supports configurable dwell times from 1 minute upward; default factory setting is 5 minutes per stage, aligning with IEC 60068-2-14 recommended practice.

Does the chamber support automated defrost cycles?

Yes—defrost is triggered automatically based on evaporator coil temperature differential and runtime thresholds; operator notification appears on screen with recommended action.

Can the controller log data during power interruption?

Battery-backed RAM retains all active setpoints, real-time values, and timestamps for ≥72 hours after AC loss; upon recovery, the system resumes operation per pre-configured restart mode (hot start/cold start/abort).

Is calibration certificate included with shipment?

A factory-as-built temperature uniformity report (per IEC 60068-3-5) is provided; NIST-traceable calibration certificates are available as an optional add-on with third-party lab documentation.

What compressed air specifications are required for pneumatic actuation?

Clean, oil-free, dry air at ≥0.6 MPa (87 psi) and ≤5 µm particulate filtration is mandatory; moisture content must comply with ISO 8573-1 Class 3.1.3.