Website: Sanwood
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Double-layer Temperature Humidity Test Chamber

Running simultaneous but distinct parallel batches for high-throughput electronic quality assurance eats up valuable laboratory square footage. Buying multiple standalone testing enclosures forces facility managers to sprawl across cleanrooms, blowing out real estate overheads and routing separate utility infrastructure drops.

Sanwood's Double-layer Temperature Humidity Test Chamber eliminates this layout inefficiency. Engineered as a vertically stacked, space-saving environmental test chamber, it houses two completely decoupled testing compartments within the physical footprint of a single unit.

Functioning as a high-precision dual climatic test chamber, each layer executes completely asynchronous profiles—allowing one tier to flash-bake components at 150°C while the adjacent tier runs a sub-zero damp heat cycle, doubling laboratory throughput without a single millimeter of thermal bleeding between chambers.

Dual-Chamber Climatic Test Chamber

Double-Layer Temperature Humidity Test Chamber (Independent Dual-Chamber Stacked Configuration)

Double-layer Temperature Humidity Test Chamber

Advanced Technical Advantages


  • Stacked Dual-Zone Asynchronous Topology: Houses two completely autonomous thermodynamic loops managed by isolated microprocessor cores, enabling separate temperature and humidity test profiles to run concurrently.
  • Zero-Crosstalk Structural Thermal Break: Integrates a heavy-gauge composite barrier panel lined with high-density vacuum-insulated panels between chambers, blocking thermal bleeding even during maximum temperature deltas.
  • Decoupled Dual-Chassis Condensation Drainage: Deploys independent micro-grooved evaporator pans and separate sealed gravity drainage manifolds, eliminating any risk of top-tier humidity overflow or cross-contamination affecting the lower unit.

  • Acoustically Dampened Decoupled Compressor Base: Features individual anti-vibration structural spring mounts under each compressor group, preventing mechanical resonance from vibrating from one tier to the other.


Double-layer Temperature Humidity Test Chamber

Multi-Industry Application Matrix


  • High-Volume Consumer Electronics & Smart Wearables QA: Runs simultaneous but separate temperature profiles on smartphone sub-assemblies and fitness tracker lots to accelerate factory line validation schedules inside the compact temperature humidity test chamber frame.

  • Automotive Sensor Swarms & Micro-ECU Lots: Executes high-temperature reliability bakes on engine management nodes in the top tier while concurrently subjecting cockpit display chips to damp-heat testing below.

  • Medical Electronics Packaging & Clinical Diagnostic Hardware: Validates hermetic sealing properties and material decay tracks for insulin pumps and clinical monitors across distinct, independent environmental profiles.

  • Semiconductor IC Lot Sampling & Multi-Batch Passives: Enables parallel testing of separate manufacturing wafer runs or passive component lots under distinct JEDEC baselines without stand-by scheduling overheads.

Double-layer Temperature Humidity Test Chamber

International Standards & Compliance Matrix


  • IEC 60068-2-38: Composite Temperature/Humidity Cyclic Test (Governs standardized rapid temperature cycling combined with sub-zero breathing cycles inside the space-saving environmental test chamber layout).
  • MIL-STD-202G Method 103B: Moisture Resistance Validation for Components (Outlines extended continuous damp heat storage profiling inside the dual-tier climatic test chamber boundaries to analyze component corrosion boundaries).
  • JEDEC JESD22-A101C: Steady-State Temperature Humidity Bias Life Test (Regulates steady-state accelerated humidity aging profiles inside the environmental test chamber enclosure to isolate semiconductor parametric drift).
  • ISO 16750-4 Section 5.3: Road Vehicles - Climatic Loads (Damp Heat) (Dictates temperature and humidity cycling profiles for electronic components mounted in road vehicles to evaluate parametric drift constraints under severe automotive environments).

  • IEC 60068-2-78: Environmental Testing - Damp Heat, Steady State (Benchmarks spatial air temperature and relative humidity stability across the climatic test chamber workspace during prolonged steady-state storage verification).
Double-layer Temperature Humidity Test Chamber

Control System Of The Test Chambers

The control system of the Sanwood test chamber adopts the world's leading software and hardware system to ensure that the test chamber operates under preset conditions, provide accurate and reliable experimental data, and help users achieve precise control and data collection of various experimental conditions.

  • Controller: It adopts the controller imported from South Korea Sanwon and the self-developed control system, which can be equipped with Siemens control system and equipped with RS232, RS485 and Ethernet communication ports.
  • Programmable control: It supports setting experimental programs, such as heating, cooling, constant temperature time, etc., and can execute multiple program settings, and supports advance reservation startup function.
  • Multiple languages optional: English, Korean, Russian, Chinese and Japanese.
  • Remote monitoring: Using network remote technology to achieve remote control, the test chamber can be monitored at any time, and the current data can be viewed through the user's PC and mobile phone, which improves the convenience of testing.

The specific control system of the test chamber will vary depending on the model. Please read the "Sanwood Environmental Test Chamber Manual" carefully before use and comply with the safety operating procedures.

Double-layer Temperature Humidity Test Chamber

Refrigeration System Of The Test Chamber

The refrigeration system of the test chamber is a complex and important system. The stability of the refrigeration system is crucial to the accuracy and reliability of the test results.

  • Sanwood Technology has developed a refrigerant hot gas defrosting technology, which effectively melts the frost on the evaporator by injecting high-temperature and high-pressure refrigerant steam into the heat exchanger in the test chamber. This not only ensures that the evaporator does not frost, but also greatly reduces the energy consumption of the equipment.
  • The refrigeration unit adopts an internationally renowned brand.
  • Optimize the layout of the refrigeration system, and adopt VRF (refrigerant flow control) technology based on the PID cold end output principle to achieve low-temperature energy-saving operation, which can reduce energy consumption by 30% under low-temperature conditions.
  • The refrigeration system adopts a modular design, with low failure rate, few welding points, high refrigeration efficiency, good reliability, simple maintenance, and low maintenance cost.


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Temperature Humidity Test Chambers
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