Standard models TH-50,TH-80L, featuring a temperature range of -20/-40/-70℃ to +150℃, humidity range of 20%–98% RH, temperature stability of ±0.5℃, and humidity stability of ±2% RH,suitable for electronics, plastics, and component testing.
Equipped with a user-friendly programmable controller, the machine supports 120 test programs with 99 segments, allowing automated cyclic testing and long-term stress experiments. The stainless-steel interior resists corrosion and is easy to clean, while the sample shelf accommodates multiple items with adjustable height. Optional features include observation windows, test ports, and remote monitoring via PC or mobile devices, enabling seamless integration into modern laboratory workflows.
Why Choose LIB Industry's Benchtop Programmable Constant Temperature Humidity Testing Machine
Ultra-Precise Performance – Maintains temperature within ±0.5℃ and humidity within ±2.5% RH, ensuring your tests deliver consistently accurate, repeatable results.
Fully Programmable & Automated – Supports up to 120 test programs with 99 segments, making complex thermal and humidity cycles effortless and reliable.
Durable, Space-Saving Design – Compact benchtop footprint with corrosion-resistant stainless-steel SUS304 workroom, ideal for modern labs without compromising sample capacity.
Globally Compliant – Built to meet ASTM D4332, MIL-STD-811D,and IEC 60068-3-5 standards, giving your tests worldwide credibility.
Smart & Flexible Operation – Optional observation windows, test ports, and PC/mobile remote monitoring allow convenient inspection and control anytime, anywhere.
Tailored to Your Needs – Easily adjustable shelves and optional accessories let you customize the setup for various samples and testing scenarios.
What Are the Technical Specifications You Need to Know?
|
Model |
TH-50 |
TH-80 |
|
Internal Dimension (mm) |
320*350*450 |
400*400*500 |
|
Overall Dimension (mm) |
820*1160*950 |
900*1210*1000 |
|
Interior Volume |
50L |
80L |
|
Heat load |
1000W |
|
|
Temperature Range |
A : -20℃ ~ +150 ℃ B : -40℃ ~ +150 ℃ C: -70℃ ~ +150 ℃ |
|
|
Temperature Fluctuation |
± 0.5 ℃ |
|
|
Temperature Deviation |
± 2.0 ℃ |
|
|
Humidity Range |
20% ~ 98% RH |
|
|
Humidity Deviation |
± 2.5% RH |
|
|
Cooling Rate |
1 ℃ / min |
|
|
Heating Rate |
3 ℃ / min |
|
Design Highlights of Benchtop Programmable Constant Temperature Humidity Testing Machine
Work Chamber
Corrosion-resistant SUS304 interior and standardly equipped with a double-layer movable perforated sample holder.
Insulation: 100 mm thick polyurethane foam for minimal heat loss and precise control.
Sloped floor ensures efficient condensation drainage and prevents water pooling.

Humidity Control System
20%–98% RH precise control, suitable for a wide range of lab testing.
Water Handling: Closed-loop humidification with level sensors for safe operation and easy maintenance.Manual water addition.

Cooling System
Compressor: High-efficiency semi-hermetic compressor for reliable performance.
Cooling Rate: 1°C/min, programmable for different testing profiles.

Sample Ports & Accessories
Standard Port: Ø50 mm insulated test port, optional Ø100 mm.
Customization: Shape, position, and number of ports configurable for special testing needs.
Supports sensor cables, power lines, and communication probes for in-situ monitoring.

Control & Data Management
7-inch color touchscreen with multilingual interface and intuitive navigation.
Programming: Supports up to 120 programs × 99 segments with ramp/soak/cycle functionality.
Real-time logging with USB export and optional remote monitoring via Ethernet.

Essential FAQs – Benchtop Programmable Constant Temperature Humidity Testing Machine
1. What materials are used? Are they resistant to extreme temperature and humidity?
The interior is made of high-quality SUS304, ensuring corrosion resistance under high or low humidity and temperature conditions. The exterior uses durable cold-rolled steel with powder coating, providing robust protection and long-term reliability in laboratory environments.
2. How does its performance compare to large-scale temperature humidity chambers?
While more compact, this benchtop programmable constant temperature humidity testing machine delivers high-precision temperature and humidity control, supporting programmable cycles and automated testing, offering lab-grade reliability similar to larger chambers but with a smaller footprint and lower operating cost.
3. What is the maximum load for the sample shelf? Can its height be adjusted?
The sample shelf supports up to 50 kg and features adjustable height, allowing flexible arrangement for different sample sizes and testing requirements. Optional multi-layer shelves are available to maximize capacity.
Upgrade Your Lab Efficiency With LIB Industry
The Benchtop Programmable Constant Temperature Humidity Testing Machine offers a compact, reliable, and highly programmable solution for precise environmental testing.
Fast reply within 1–3 hours
Worldwide shipping in 7–15 working days
3-year warranty + lifetime technical support
Rapid-response service and expert guidance
Contact LIB industry at sales@libtestchamber.com today to customize your testing solution and optimize your lab workflow.
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