Views: 0 Author: Site Editor Publish Time: 2026-03-17 Origin: Site
When testing electronics, materials, or biological samples, even a small deviation—just 1 °C or 3% RH—can lead to completely different results. Engineers and lab technicians often ask: Can a small humidity chamber truly match the accuracy of a full-size system?
Recently, a German electronics company shared their experience after installing a LIB small humidity chamber. As Ralf Hinnerichs, Head of QS & Engineering, noted: “Until now everything is ok, no question… good to know that I can return back to you in case of questions.” This kind of real-world feedback highlights not only stable performance, but also the confidence users have in long-term operation and support.
LIB small humidity chambers are built around this exact expectation—delivering precise, stable, and repeatable environmental control in a compact format. By integrating high-accuracy sensors, intelligent PID control, and standards-based engineering, they provide laboratory-grade performance for modern R&D and quality assurance environments.
Accuracy in a humidity chamber is not just about numbers—it depends on sensor quality, airflow design, and compliance with international standards.
1. Temperature stability: ±0.5 °C
2. Temperature uniformity: ≤ ±1.5 °C
3. Humidity deviation: ±2.5% RH
4. Sensor resolution: up to 0.001 °C (PT100 Class A)
These performance levels are designed in accordance with widely recognized standards such as: IEC 60068-2-78 (constant humidity testing), IEC 60068-2-30 (humidity cycling), IEC 60068-2-67 (85°C / 85%RH), JEDEC JESD22-A101 (semiconductor reliability)
1. Multi-directional airflow systems to eliminate hot and wet zones
LIB Installed Small Humidity Chambers for an Automotive Company
2. PID intelligent control algorithms for real-time adjustment
3. Pre-conditioning stabilization before test start
The result is a small chamber that delivers lab-grade precision comparable to large walk-in systems.
A humidity chamber is a controlled system designed to simulate specific temperature and moisture conditions in order to evaluate how products perform in real-world environments. Typical operating ranges cover temperatures from –70 °C to +150 °C and humidity levels from 20% to 98% RH. These chambers are widely used in electronics reliability testing, pharmaceutical stability studies, and material aging or corrosion analysis, where consistent environmental control is critical for accurate results.
A standard humidity chamber consists of several core systems working together to ensure precision and stability:
Temperature System: Heaters and compressors regulate heating and cooling performance.
Humidity System: Includes water tank, humidifier, and dehumidification unit to control moisture levels.
Sensors: High-accuracy PT100 temperature probes and humidity sensors provide real-time monitoring.
Air Circulation: Fans ensure uniform temperature and humidity distribution throughout the chamber.
Controller: Programmable PID touchscreen controller enables complex test cycle setup and automation.
Each component directly contributes to accuracy, stability, and repeatability of test results.
Humidity chambers are generally classified into three types:
Capacity: 50L–150L; ideal for R&D labs and small sample testing; compact, quiet (<65 dB), and space-saving.
Medium capacity; suitable for production and routine testing; offers a balance between performance and volume.
Designed for large-scale testing of full systems or assemblies; widely used in automotive and aerospace industries.
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| Name | Small Humidity Chamber | Standing Humidity Chamber | Walk-In Small Humidity Chamber |
| 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 |
| Energy Saving | Automatic Moisture Circulation in Humidity System
| Automatic Moisture Circulation in Humidity System
| Automatic Moisture Circulation in Humidity System
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| Operational Cost | Lowest | Medium | Highest |
| Standards Coverage | Full IEC / ISO / ASTM compliance | ||
| Noise Level | ≤ 65 dBA | ||
A common test method follows IEC 60068-2-30.
Step 1: Ramp from 25 °C to 55 °C
Step 2: Increase humidity to 95% RH
Step 3: Hold for 6–12 hours
Step 4: Cool down to 25 °C
Step 5: Repeat cycle (2–10 cycles)
Temperature: 85 °C
Humidity: 85% RH
Duration: 168h / 500h / 1000h
PCB reliability
Battery safety
Semiconductor aging
LIB small humidity chambers support fully programmable cycles (up to 120 programs with 100 steps each), enabling fully automated multi-stage testing. This allows users to simulate complex real-world environments—such as temperature ramping, humidity soaking, and cyclic stress tests—within a single continuous process.
| Name | small humidity chamber |
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| Model | td-50 | td-80 | |
| Internal dimension (mm) | 320x350x450 | 400x400x500 | |
| Overall dimension (mm) | 800x1050x950 | 900×1100×1000 | |
| Temperature range | -20℃ ~+150 ℃ | ||
| Low type | Ⅰ: -40℃ Ⅱ: -70℃ Ⅲ: -86℃ | ||
| Temperature fluctuations | ± 0.5 ℃ | ||
| Humidity Range | 10%/20%~95% | ||
| Temperature deviation | ± 2.0 ℃ | ||
| Heating rate | 3 ℃ / min | ||
| Cooling rate | 1 ℃ / min | ||
| Temperature Sensor | PTR Platinum Resistance PT100Ω/MV A-class | ||
| Temperature Resolution | ± 0.001 ℃ | ||
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Power Supply Cable Hole | Temperature and Humidity Sensor | Air circulation |
Operating at ≤60 dBA, this benchtop chamber runs quieter than most office equipment. It allows continuous testing without disturbing sensitive experiments, team communication, or online meetings—even during intensive temperature and humidity cycles.
With a footprint of only 820 × 1160 × 950 mm, the TH-50 is designed to fit easily next to a workstation or under a lab hood. It maximizes space efficiency while still delivering full environmental testing capabilities.
Supporting temperature control from –86 °C to +150 °C and humidity from 10% to 98% RH, the chamber can replicate extreme cold storage, high-heat conditions, and humid climates. Its compressor-based cooling and electric heating system ensure fast and reliable environmental transitions.
Equipped with PT100 Class A sensors offering up to 0.001 °C resolution, the system maintains temperature stability within ±0.5 °C and humidity accuracy within ±2% RH. Optimized airflow design with centrifugal fans ensures consistent conditions across all test samples, eliminating variation within the chamber.
The chamber supports rapid transitions with cooling rates of 1 °C/min and heating rates of 3 °C/min. Pre-programmed test profiles allow users to run complex multi-step cycles automatically, reducing setup time and increasing throughput.
The interior is made of corrosion-resistant SUS304 stainless steel, while the exterior features a durable A3 steel structure with protective coating. Integrated safety systems—including leakage protection, grounding, phase monitoring, and over-temperature shutdown—ensure safe and stable operation in demanding lab environments.
Yes. With proper airflow design and PID control, small chambers can achieve ±0.5 °C and ±2.5% RH, matching industry requirements.
The 85°C / 85%RH test is the most widely used for reliability evaluation.
LIB chambers support long-term tests up to 1000 hours or more with stable conditions.
Yes. It is suitable for electronics, pharmaceuticals, automotive parts, and material testing.
Any customization can be made. LIB offers a 3-year warranty and lifetime service. Any issues that cannot be resolved during the warranty period will be replaced free of charge. 24/7 English-speaking after-sales team. Fast shipping within 7-15 days.
A small humidity chamber is no longer just a compact alternative—it is a high-precision testing tool engineered for modern laboratories. With standards-based design, advanced control systems, and stable performance, LIB chambers ensure that every test result is accurate, repeatable, and reliable.
Contact LIB Industry to learn more about small humidity chambers and customized testing solutions.
