Benchtop Temperature Cycling Chamber for Environmental Stress Screening ESS

LIB's Benchtop Temperature Cycling Chamber for Environmental Stress Screening ESS is available in compact capacities such as 50 L and 80 L, making it suitable for testing PCBs, semiconductor devices, sensors, medical electronics, communication modules, and laboratory samples. The chamber can be positioned directly on laboratory benches or beneath workstations, helping laboratories maximize space efficiency while maintaining full environmental simulation capability. A 7-inch intelligent touchscreen controller supports up to 120 programmable test profiles with 100 steps each, allowing automatic execution of long-term thermal cycling sequences. Ethernet communication and real-time data logging simplify integration with laboratory management systems and quality traceability platforms.

Working Principle

1. Quiet Refrigeration and Airflow Circulation System: The benchtop ESS chamber uses a compressor-based refrigeration system combined with centrifugal airflow circulation to create stable environmental conditions throughout the workspace. Cold and warm air are evenly distributed through optimized air ducts and precision baffle structures, minimizing temperature gradients and ensuring uniform exposure for all samples. This design not only improves testing consistency and repeatability but also keeps operating noise at ≤65 dBA, allowing the chamber to run continuously in laboratories, offices, and shared R&D spaces without disrupting daily work.

2. Rapid Heating and Cooling Control Mechanism: The equipment integrates responsive electric heaters with an efficient refrigeration unit to achieve rapid temperature transitions required for Environmental Stress Screening (ESS). Intelligent PID control continuously adjusts heating and cooling output according to real-time sensor feedback, supporting heating rates up to 3 °C/min and cooling rates of 1 °C/min. Faster ramp rates reduce waiting time between cycles, improve testing throughput, and help engineers quickly identify potential product weaknesses under accelerated thermal stress conditions.

3. High-Precision Temperature and Humidity Regulation: PT100 Class A sensors with 0.001 °C resolution continuously monitor chamber conditions and transmit data to the intelligent control system. The PID algorithm dynamically regulates heating, cooling, and humidification processes to maintain temperature stability within ±0.5 °C and humidity accuracy within ±2 % RH. This high level of precision ensures reliable and repeatable ESS testing results for electronics, semiconductors, batteries, sensors, and other sensitive components requiring strict environmental control.

4. Intelligent Humidification and Moisture Simulation: A closed-loop humidification system automatically supplies and recycles water during damp heat testing. The chamber accurately reproduces high-humidity, condensation, and moisture exposure environments commonly encountered in tropical, coastal, or high-moisture applications. By recycling condensate water, the system significantly reduces water consumption while maintaining stable humidity conditions during long-duration testing, improving both operational efficiency and environmental sustainability.

5. Programmable ESS Automation System: The chamber features a 7-inch touchscreen programmable controller capable of storing up to 120 test programs with 100 steps each. Users can create complex environmental stress screening sequences combining temperature cycling, humidity exposure, dwell periods, and repeated transitions in a single automated program. Real-time monitoring, Ethernet communication, and data logging simplify long-term unattended operation while improving testing efficiency and traceability.

6. Protective Structural and Safety Design: The chamber interior is manufactured from corrosion-resistant SUS304 stainless steel to withstand continuous high-temperature and high-humidity operation. Reinforced A3 steel outer panels provide strong mechanical durability for long-term laboratory use. Comprehensive safety protections, including over-temperature alarms, leakage current protection, compressor overload protection, grounding protection, and phase-sequence monitoring, ensure reliable chamber operation while protecting both operators and valuable test samples during demanding ESS cycles.

Technical Specifications

Compliance with International Environmental Testing Standards

LIB Benchtop ESS chambers comply with a broad range of international environmental testing standards, including IEC 60068-2-1 and IEC 60068-2-2 for low- and high-temperature testing, IEC 60068-2-14 for thermal cycling, IEC 60068-2-30 and IEC 60068-2-78 for damp heat testing, JESD22-A104 for semiconductor thermal cycling, JESD22-A101 for steady-state humidity reliability testing, ISO 16750 for automotive electronics environmental validation, ASTM D4332 for conditioning procedures, UN38.3 for lithium battery transport simulation, and other environmental test standards. Typical conditions include thermal cycling between –40 °C and +85 °C for PCB reliability testing, humidity exposure at 85 °C/85 % RH for electronic component durability, low-temperature storage at –55 °C for aerospace modules, and high-temperature aging at +125 °C for automotive electronic systems.

Reliable Global Support

LIB provides comprehensive global after-sales support including a 3-year warranty, lifetime technical assistance, and rapid spare-parts delivery within 7–15 days. English-speaking technical engineers are available 24/7 to support installation, calibration, maintenance, and operational guidance. With compact size, precise control, rapid cycling capability, and reliable environmental simulation performance, the LIB Benchtop Temperature Cycling Chamber for ESS helps laboratories accelerate product validation while maintaining accurate, repeatable, and internationally compliant testing results.