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Humidity Calibration Chamber

Name: Humidity Calibration Chamber
Brand: Xi'an LIB Environmental Simulation Industry

LIB Humidity Calibration Chamber provides a stable and uniform environment for calibrating temperature and humidity sensors, hygrometers, data loggers, and other measuring instruments.Available in 50L and 80L volumes, it provides a space-saving solution for laboratories and quality control departments with limited installation space.

With temperature ranges down to -70°C and up to +150°C, and humidity control from 20%RH to 98%RH, the climate calibration chamber can generate stable environmental conditions for calibration across a wide range of operating points. Equipped with a high-accuracy PT100 temperature sensor and capacitive humidity sensor, it ensures precise control, excellent uniformity, and reliable traceable calibration results.

Model: THC-50, THC-80

Standard: AAMA501, ASTM D4169-16, IEC 61215, IEC 61646, IEC61108, IEC62688, MIL-STD-812D,SAE J575

Humidity Calibration Chamber Features and Benefits

1. Compact Benchtop Design

Available in 50L and 80L configurations, the chamber occupies minimal laboratory space while providing sufficient room for sensor and instrument calibration.

2. Wide Temperature and Humidity Range

Temperature ranges from -70°C to +150°C and humidity control from 20%RH to 98%RH allow calibration across a wide variety of environmental conditions.

3. High-Precision Sensing System

Equipped with a Class A PT100 temperature sensor and a capacitive humidity sensor, ensuring accurate monitoring and stable environmental control.

4. Uniform Test Environment

The optimized airflow circulation system distributes temperature and humidity evenly throughout the workspace, helping improve calibration consistency and repeatability.

5. Multi-Device Calibration Capability

Removable shelves and flexible workspace configuration allow multiple sensors, transmitters, and data loggers to be calibrated simultaneously.

6. Smart Control and Connectivity

The programmable touch-screen controller supports Ethernet communication, remote monitoring, data storage, and PC connectivity for efficient calibration management.

Specifications of Humidity Calibration Chamber

Parameter / Specification	THC-50	THC-80
Internal Dimension (mm)	320 × 350 × 450	400 × 400 × 500
Overall Dimension (mm)	800 × 1050 × 950	900 × 1100 × 1000
Interior Volume / Max Heat Load	50L / 1000W	80L / 1000W
Temperature Range	A: -20℃ ～ +150 ℃ B: -40℃ ～ +150 ℃ C: -70℃ ～ +150 ℃
Temp. Fluctuation / Deviation	± 0.5 ℃ / ± 2.0 ℃
Humidity Range / Deviation	20% ~ 98% RH / ± 2% RH
Heating / Cooling Rate	3 ℃ / min / 1 ℃ / min
Controller	Programmable color LCD touch screen (Ethernet, PC Link)
Cooling System	Mechanical compression (French TECUMSEH compressor, R404A/R23)
Sensors	PT100Ω Platinum Resistance (Accuracy 0.001℃) / Capacitive humidity sensor
Air Circulation	Centrifugal wind fan forced circulation
Chamber Material	Exterior: Coated steel plate / Interior: SUS304 stainless steel
Insulation & Sealing	Polyurethane foam & insulation cotton; Double-layer silicone sealing
Built-in Water Tank (mm)	150 × 350 × 180
View Window (mm)	120 × 150 (with interior lighting)
Standard Configuration	1 Cable hole (Φ 50mm) with plug; 2 shelves
Max Noise / Power Supply	≤65 dBA / 220V 50Hz or 380V 50Hz
Environmental Condition	5℃ ～ +35 ℃, ≤ 85% RH
Safety Devices	Humidifier dry-combustion, over-temp, over-current, refrigerant high-pressure, water shortage, and earth leakage protection

Details of Humidity Calibration Chamber

High-Precision Measurement System

Equipped with an A-class PTR Platinum Resistance PT100Ω sensor (boasting a resolution of 0.001°C) and high-sensitivity capacitive humidity sensors,satisfying the most stringent calibration and metrology standards.

Efficient Heating and Cooling Performance

Features a French-imported TECUMSEH compressor utilizing an environmentally friendly R404A/R23 dual-refrigerant setup. Paired with a high-efficiency Nichrome heater for minimized stabilization downtime.

Uniform Air Circulation System

Engineered with heavy-duty centrifugal wind fans that drive forced air circulation. This ensures optimal thermal and moisture uniformity throughout the entire SUS304 stainless steel interior, preventing localized micro-climates that could compromise calibration accuracy.

Data Integration & Smart Control

The programmable color LCD touch screen controller supports comprehensive multi-segment profiling. Equipped with built-in Ethernet and PC Link interfaces, enabling automated data logging, real-time graphing, and seamless remote monitoring from your PC.

FAQ On Humidity Calibration Chamber

Q1: Why is this chamber specifically recommended for sensor and logger calibration over standard test chambers?

A: With a 0.001°C sensor resolution and an advanced external isolation humidifier, it minimizes the minor fluctuations that often distort calibration readings for precision data loggers and thermo-hygrometers.

Q2: How does the chamber guarantee stable humidity control at extreme setpoints?

A: Stability is achieved via our high-end capacitive humidity sensor paired with a smart PID controller. The external evaporation system injects precise mist increments, while the centrifugal air circulation guarantees that the ±2% RH deviation is maintained evenly across all test shelves, avoiding condensation or dry zones.

Q3: What instruments can be calibrated in the chamber?

The temperature humidity calibration chamber is suitable for temperature and humidity sensors, hygrometers, transmitters, data loggers, environmental monitoring devices, and other measuring instruments.

Q4: Can multiple sensors be calibrated at the same time?

Yes. The removable shelves and flexible workspace allow multiple sensors or data loggers to be calibrated simultaneously, improving laboratory efficiency.

LIB has a 3-year extended warranty period and lifelong service, and five service centers around the world ensure that customers can get timely and professional technical services to guarantee your testing. If you are interested, please let us know your requirements and the LIB team will give you the latest information and the best offer.

For large-scale calibration projects, you may also be interested in LIB's Temperature and Humidity Chambers and Walk-In Environmental Chambers, offering larger workspace capacities for batch calibration of multiple sensors and instruments.

Send Inquiry

LIB Team will send you specs and quote today.