When choosing a test chamber to check how products perform under different temperatures and humidity, it's important to look at key features like how wide the temperature range is, how fast the chamber heats up or cools down, how well it controls humidity, and how durable the structure is.
LIB's Temperature and Humidity Environmental Chamber is built to meet all these needs. It provides fast, accurate, and stable control of both temperature and humidity, making it ideal for many industries - including electronics, aerospace, automotive, and materials testing. The chamber is designed to recreate real-life environments, helping users test how their products will hold up in extreme heat, cold, or moisture.
LIB's Temperature and Humidity Environmental Chamber :
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Efficient Heating and Cooling System
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Precision Sensing and Control
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Sustainable Structural Design and Insulation
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Consistent Air Circulation and Temperature Uniformity
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-40℃ to +150℃
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20%-98%RH
1. Efficient Heating and Cooling System
Wide Temperature Range: A typical chamber can operate from –70 °C up to +150 °C, enabling rigorous testing across a broad spectrum. Whether simulating arctic cold or desert-like heat, this range ensures compatibility with applications in electronics, aerospace, automotive, and materials science.
High-Performance Compressor & Heater: At the heart of rapid temperature transitions is a high-efficiency compressor (for cooling) paired with a precision heater (for heating). The compressor rapidly removes heat from the chamber interior, achieving a cooling rate around 1 °C per minute, while the heater can raise internal temperatures at 3 °C per minute. This dual-system design guarantees quick environmental shifts without excessive overshoot or undershoot.
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Feature |
Specification |
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Temperature Range |
Model A: –20 °C to +150 °C |
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Temperature Ramp Rates |
Heating: 3 °C/min, Cooling: 1 °C/min |
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Temperature Stability |
± 0.5 °C |
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Temperature Deviation |
± 2.0 °C |
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Sensors |
PT-100 Class A (± 0.001 °C accuracy) |
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Humidity Range |
20 % to 98 % RH |
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Humidity Deviation |
± 2.5 % RH |
2. Precision Sensing and Control
Precise PT100 Class A Sensors: Every chamber relies on PT100 Class A temperature sensors that offer ±0.001 °C resolution. These sensors continuously monitor the chamber air, feeding real-time data to the control system. High-accuracy sensing is critical for applications where even a 0.5 °C fluctuation can impact product performance.
Intelligent PID Control Algorithms: The chamber's microprocessor-based controller utilizes PID algorithms to compare the actual temperature against the setpoint. If the internal temperature deviates beyond ±0.5 °C, the controller adjusts heating or cooling power automatically. This closed‑loop approach ensures a temperature deviation no greater than ±2.0 °C, even during prolonged tests.
Digital Touch-Screen Interface: A multi-language touch screen lets you program multi-step temperature profiles, hold times, and safety limits. Data can be saved to USB or accessed via computer for remote, multi-chamber control. Built-in alarms alert you if conditions go out of range, protecting samples and operators.
3. Sustainable Structural Design and Insulation
Corrosion-Resistant Interior: The chamber's workroom is fabricated from SUS304 stainless steel, which resists corrosion, withstands repeated thermal cycling, and simplifies cleaning. In environments prone to humidity or cyclic condensation, a stainless interior avoids rust and preserves sensor accuracy over time.
Insulated Material & Sealed Doors: 10 cm of polyurethane foam with reflective insulation cotton surrounds the interior, reducing heat loss, improving energy efficiency, and speeding temperature control. A silicone‑rubber door seal prevents thermal leakage and keeps the internal climate stable.
Rigid Exterior Construction: To protect internal components, the outer cabinet is built from A3 steel with a durable plastic coating, resisting dents and scratches in laboratory or industrial settings. Heavy-duty castors with locking brakes allow for easy relocation, while also stabilizing the chamber once installed.
4. Consistent Air Circulation and Temperature Uniformity
Centrifugal Fan System: Uniform temperature distribution is achieved through centrifugal fans positioned at the top or sides of the workroom. These fans circulate heated or cooled air evenly across all chamber surfaces, eliminating "hot spots" or "cold spots."
Even‑Angle Airflow Configuration: By using an even number of fans (e.g., 2, 4, or 6), air is pushed in multiple directions. For example, two fans might blow from opposing corners, while four fans direct air toward the center from each side. This arrangement ensures every test sample experiences the same temperature and minimizes gradients, which is crucial for consistent, repeatable results.
Low‑Noise Operation: Modern chamber fans are designed to operate quietly-often below 65 dB-reducing ambient laboratory noise and preventing vibration-induced errors during delicate measurements.
5. Efficient Humidity Control & Automatic Water Recycling System
Water Purification & Recycling: A built-in automatic water filtration unit removes impurities and recycles condensate, providing clean water for the humidity generation loop. This minimizes scale buildup in pipes and extends component life.
Efficient Humidifier: Precise valves and flow sensors ensure humidity can be maintained between 20% RH and 98% RH with ±2.5% RH accuracy, providing a comfortable and stable environment that enhances product quality and user well-being.
Wet‑Bulb Gauze Sensor Assembly: Combined with the PT100 dry‑bulb sensor, a wet‑bulb gauze tracks relative humidity by measuring evaporative cooling. The control system then adjusts heat or humidity input to maintain stable conditions, even during temperature ramps.
6. Advanced Safety Protections & Customizable Services
Advanced Safety Protections: Chambers are equipped with leakage current protection, phase‑sequence monitors, and ground‑fault interrupters to protect both operators and test equipment. If an electrical fault or over‑temperature event occurs, the system triggers an immediate shutdown and alarm.
Customizable Services: Multiple cable holes (standard 50 mm diameter) allow power lines and so on to pass through the chamber door without compromising integrity. Cable holes can be customized in size to accommodate larger connectors. Sample shelves and the overall structure can also be tailored to meet specific requirements.
LIB's reliable and Efficient Services
Efficient Global service: 3-year warranty life-long service, equipment problems can not be solved free of charge to send a new test chamber. 24 hours of technical professional English team after-sales service, lifelong maintenance of equipment, spare parts global speed. Spare parts are stocked, with fast shipping in 7–15 days and full guidance for secure delivery and installation.
Boost your testing precision with LIB's smart Temperature & Humidity Chamber-offering reliable accuracy, efficiency, and durability. Contact us today for a customized solution tailored to your unique testing needs.
