Views: 0 Author: Site Editor Publish Time: 2026-03-11 Origin: Site
A Temperature Humidity Chamber is a high-precision device that simulates
controlled temperature and humidity for product reliability testing. Industries like electronics, automotive, aerospace, renewable energy, and battery manufacturing rely on it to evaluate product performance under extreme environmental conditions. By recreating real-world stresses in a lab, engineers can identify potential failures before products reach the market.
Recently, our Canadian customer, Keyhan Laboratory, reported that the LIB Temperature Humidity Chamber has been operating smoothly since last week. They praised its stable performance, ease of use, and consistent test results. Regular maintenance, as suggested in our processing list, helps the chamber maintain reliability and extend its lifespan.
With precise control of temperature and humidity, LIB Temperature Humidity Chambers enable laboratories to conduct a wide range of environmental tests—from high/low temperature aging to humidity freeze cycles—helping engineers accelerate product validation, improve quality, and ensure durability under harsh conditions.
Before operating a Temperature Humidity Chamber, it is important to understand how the equipment functions. The chamber controls temperature and humidity through integrated environmental control systems.
The chamber maintains stable conditions through integrated systems:
Temperature control system: Heating and refrigeration units enable precise temperature management.
Humidity generation system: Maintains relative humidity from 20% to 98% RH.
Air circulation system: Multi‑directional fans ensure uniform airflow, keeping internal variation under ±1.5 °C.
Programmable controller: Store up to 120 test protocols with 100 steps each.
Environmental sensors: PT100 Class A probes for ±0.001 °C resolution; humidity sensors accurate to ±2.5 % RH.
These systems work together to create stable, repeatable test conditions for reliable results.
Unlike basic equipment operation, using a Temperature Humidity Chamber requires attention to environmental uniformity, humidity control, and system stability. The following steps focus specifically on proper chamber operation.
Humidity control is a key feature of a Temperature Humidity Chamber. Before starting the test, ensure the water tank is filled with purified or distilled water, the humidifier and water supply pipeline are working properly, and the drainage system is clear.
Calibrate humidity sensors so that relative humidity remains stable within ±2.5 % RH throughout the test. Proper preparation ensures consistent humidity control and reliable test results.
Air circulation is crucial for maintaining uniform temperature and humidity.
When placing samples inside the chamber:
Leave 5–10 cm space between items.
Avoid blocking air outlets or return vents.
Do not place samples against chamber walls.
Ensure even airflow across all test specimens.
With correct placement, the chamber can maintain temperature uniformity within ±1.5 °C and consistent humidity across all samples, eliminating hot or cold spots.
A Temperature Humidity Chamber uses a programmable controller that allows engineers to set precise environmental cycles.
Common settings include:
Target temperature (from –70 °C to +150 °C)
Relative humidity (20–98 % RH)
Temperature ramp rate (heating at 3 °C/min, cooling at 1 °C/min)
Humidity stabilization time (typically 15–30 minutes)
Test duration or number of cycles
For example, a Humidity Freeze Test may alternate between high humidity (~95 % RH) and freezing temperatures (–40 °C) to simulate harsh environmental conditions.
Before starting the official test cycle, the chamber should reach stable conditions.
Operators should confirm:
Temperature has reached the setpoint, remaining within ±0.5 °C
Relative humidity is stable within ±2.5 % RH
Air circulation is functioning normally
Stabilization ensures the test begins under accurate and repeatable conditions.
During operation, monitor the chamber to ensure stable performance.
Important factors include:
Temperature fluctuations staying within ±0.5 °C
Humidity consistency within ±2.5 % RH
Air circulation performance
Condensation inside the chamber
Modern LIB Temperature Humidity Chambers include real-time data logging, enabling engineers to track trends and verify stability throughout the test cycle.
A Temperature Humidity Chamber supports multiple environmental test methods commonly used across industries. Each test can be performed with precise control of temperature (±0.5 °C) and humidity (±2.5 % RH) to ensure reliable results.
| Test Name | Purpose | Typical Conditions |
|---|---|---|
| High/Low Temperature Aging Test | Evaluate product durability under prolonged extreme temperatures | –70 °C to +150 °C |
| Thermal Abuse Test | Battery safety evaluation | Up to +85 °C or higher |
| Humidity Freeze Test | Test product durability under condensation and freezing | –40 °C, up to 95 % RH |
| Damp Heat Test | Assess corrosion resistance and moisture protection | +85 °C, 85 % RH |
| Low Temperature Test | Verify operation under extreme cold | As low as –70 °C |
The High/Low Temperature Aging Test evaluates product durability under prolonged exposure to extreme temperatures, ranging from –70 °C to +150 °C. The chamber maintains stable conditions over long durations, allowing engineers to simulate months or years of real-world thermal stress within hours.
The Thermal Abuse Test is commonly used for battery safety evaluation. Batteries are exposed to elevated temperatures, typically up to +85 °C or higher, to observe potential failure risks. The chamber ensures uniform temperature distribution within ±1.5 °C, preventing localized overheating during testing.
The Humidity Freeze Test simulates condensation followed by freezing conditions. Relative humidity can reach 95 % RH, while temperatures drop to –40 °C, mimicking harsh climate cycles. Consistent airflow ensures uniform conditions across all test samples for reliable durability assessment.
The Damp Heat Test exposes products to high temperature and high humidity to evaluate corrosion resistance and moisture protection. Typical conditions include temperatures of +85 °C combined with 85 % RH, maintained for long durations without drift, allowing accurate assessment of material and product longevity.
The Low Temperature Test ensures products operate reliably under extremely cold conditions, as low as –70 °C. The chamber maintains precise temperature stability and even airflow, so all samples experience identical conditions, verifying cold-start performance and operational reliability.
LIB environmental testing equipment is designed to provide reliable, high-performance environmental simulation for a wide range of industries.
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Temperature range | -20℃ ～+150 ℃ | ||||
Low type | A: -40℃ B:-70℃ C -86℃ | ||||
Humidity Range | 20%-98%RH | ||||
Temperature deviation | ± 2.0 ℃ | ||||
Heating rate | 3 ℃ / min | ||||
Cooling rate | 1 ℃ / min | ||||
Controller | Programmable color LCD touch screen controller, Multi-language interface, Ethernet , USB | ||||
Refrigerant | R404A, R23 | ||||
Exterior material | Steel Plate with protective coating | ||||
Interior material | SUS304 stainless steel | ||||
Standard configuration | 1 Cable hole (Φ 50) with plug; 2 shelves | ||||
Timing Function | 0.1~999.9 (S,M,H) settable | ||||
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Touch screen controller Holds up to 120 test programs with 100 steps each, making it well suited for complex multi‑stage profiles such as temperature–humidity shock or soak cycles. | The compressor The compressor rapidly removes heat from the chamber interior, achieving a cooling rate around 1 °C / 5 °Cper minute. | Robust Anti-Corrosion Workroom The chamber's interior is built from SUS304 stainless steel, offering outstanding resistance to heat and corrosion for long-lasting performance. | Integrated Power Access hole Allows test specimens to stay powered during experiments, enabling performance evaluation under varying temperature and humidity. Standard 50 mm diameter; quantity and size customizable. |
LIB chambers cover a broad testing range from –70 °C to +150 °C and 20% to 98% relative humidity, enabling simulation of extreme climate conditions. This allows engineers to replicate real-world environments from arctic cold to tropical heat and humidity in one chamber.
Advanced control systems maintain temperature within ±0.5 °C and relative humidity within ±2.5 % RH. This precision ensures that test results are consistent and repeatable, even during long-duration or complex environmental cycles.
Optimized air circulation ensures uniform conditions across all samples, keeping temperature variation under ±1.5 °C and humidity stable throughout the chamber. This eliminates hot/cold spots and ensures each sample experiences the same test conditions.
LIB chambers are constructed with SUS304 stainless steel interiors and A3 coated steel exteriors, resistant to corrosion and mechanical wear. High-quality refrigeration systems and robust components allow long-term operation without performance degradation.
The programmable controller supports complex cycles, including temperature-humidity ramping, humidity freeze tests, and long-term aging tests. Engineers can store up to 120 test programs with 100 steps each, enabling fast switching between different test protocols while maintaining precision and repeatability.
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| Name | Small Climatic Test Chamber | Standing Climatic Test Chamber | Walk-In Climatic Test |
| Capacity | TH-50: 800x1050x950 mm TH-80: 900×1100×1000mm | Capacity: 100L; 225L; 500L; 800L; 1000L | ＞20m³ |
| Throughput | Ideal for small components, sensors, boards | Subassemblies or mid-volume batches | Bulk testing of items or vehicles as a whole |
LIB provides different types of environmental test chambers tailored to the size of the test specimens.
Operating a Temperature Humidity Chamber involves preparing the humidity system, arranging samples properly, setting environmental parameters, stabilizing conditions, and monitoring environmental performance during testing.
Environmental tests include High/Low Temperature Aging Test, Thermal Abuse Test, Humidity Freeze Test, Damp Heat Test, and Low Temperature Test.
Industries such as electronics, automotive, renewable energy, aerospace, and battery manufacturing rely on Temperature Humidity Chambers.
Proper operation ensures stable environmental conditions and accurate testing results.
Learning how to correctly operate a Temperature Humidity Chamber is essential for reliable environmental testing. Whether conducting High/Low Temperature Aging Tests, Thermal Abuse Tests, or Damp Heat Tests, the Temperature Humidity Chamber provides a controlled environment for evaluating product durability.
With advanced design and precise environmental control, LIB Temperature Humidity Chambers provide reliable testing for modern laboratory needs. Contact LIB Industry today to schedule a demo, discuss customization, or learn how our chambers can improve your testing efficiency.
