Which Methods Are Used in a Benchtop Temperature Humidity Test Chamber?

In modern laboratory environments, efficiency, precision, and repeatability are key. Researchers and QA teams require equipment that delivers accurate environmental simulations without dominating precious workspace or generating excessive noise. The LIB Benchtop Temperature Humidity Test Chamber, such as the TH‑50, offers an ideal solution by combining compact design with advanced temperature and humidity control.

LIB's Benchtop Temperature Humidity Test Chamber provides laboratories with full-spectrum environmental testing, supporting electronics, automotive parts, medical products, and more. With temperature ranges from –86 °C to +150 °C and humidity levels between 10 %–98 % RH, this chamber adheres to major standards including UL 2580, UL 2271, IEC 62660‑2, UL 1642, UL 1973, SAE J2929, IEC 60068‑2‑30 for batteries; IEC 61215 for photovoltaic modules; SAE J2334 and VW 80000 for automotive testing; and IEC 62717 for luminaire materials. High-accuracy PT100 Class A sensors and advanced PID control ensure precise, uniform conditions for reliable testing across diverse applications.

The primary method used in a benchtop temperature humidity test chamber is precise environmental simulation. This is achieved through integrated heating, cooling, and humidification systems. A compressor-based cooling system provides rapid low-temperature conditions, while electric heaters enable high-temperature exposure. Centrifugal fans circulate air to maintain uniform temperature and humidity, eliminating gradients across all specimens. Humidity control uses a closed-loop water recycling system, reusing up to 60 % of condensate for eco-friendly operation.

Applications span multiple industries:

Electronics: Thermal shock, cycling, heating, low/high temperature tests, humidity, vibration, altitude/low pressure, and shelf-life testing.

Photovoltaics: Thermal cycling, damp heat at 85 °C/85 % RH, and humidity freeze tests.

Automotive: High/low temperature aging, thermal shock, vibration, and material durability testing.

Medical & Cosmetic: Shelf-life, stability, and aging tests.

Textiles & Food: Hydrolysis aging, storage, and stability tests under high humidity.

Benchtop chambers save valuable lab space with a compact footprint of 820 × 1160 × 950 mm. They can be placed next to benches or under fume hoods, avoiding the need to move samples back and forth.

Operation is ultra-quiet at ≤60 dBA, softer than an office printer, ensuring minimal disruption to sensitive experiments or discussions.

Despite their small size, they match large units in performance. Heating rates reach 3 °C/min and cooling 1 °C/min, with optional fast-ramp rates of 5 °C/min or 10 °C/min for customized tests.

Precision and uniformity are maintained with temperature fluctuations within ±0.5 °C and humidity controlled within ±2 % RH, providing consistent and reliable test conditions for all samples.

Cable Hole	Controller

Electronics testing requires precise simulation of environmental conditions to evaluate durability and reliability. LIB Benchtop Temperature Humidity Test Chambers enable step-by-step testing as follows:

Step 1: Select the appropriate test profile, including temperature and humidity ranges. Preloaded programs allow hundreds of steps for continuous cycling.

Step 2: Install the product securely using standard or customized racks, trays, and probe ports. Ensure proper spacing to maintain airflow uniformity.

Step 3: Start the chamber. Sensors and PID control regulate temperature and humidity, while real-time curve plotting monitors changes.

Step 4: After the cycle, retrieve data logs, export reports in CSV or PDF format, and analyze for product performance and failure points.

For larger or specialized products, LIB offers vertical and walk-in Temperature Humidity Test Chambers, providing the same precision and control in expanded dimensions. Non-standard customizations, including altered chamber sizes, may incur additional costs depending on complexity and materials used.

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

Q1: Can Benchtop Environmental Test Chamber achieve 5 °C/min (or 10 °C/min) fast temperature change?
A1: Yes! Although compact in size, benchtop chambers match the performance of large units. Custom ramp rates are supported to meet your specific testing requirements.

Q2: Will modifying Temperature Humidity Test Chamber standard design or changing chamber size increase costs?
A2: Yes, non-standard modifications usually involve additional costs. Fees depend on the complexity and material usage. Transparent quotes are provided for each request.

Q3: How is Temperature Humidity Test Chamber humidity sensor calibrated?
A3: Factory calibration occurs post-assembly. Temperature calibration uses nine PT100 probes for uniform measurement. Humidity is calibrated using the dry-wet bulb comparison method. Deviations are adjusted via hardware parameters to ensure precise, uniform conditions before shipping.

Q4: Can curves be drawn during Temperature Humidity Test Chamber test process?
A4: Yes. The controller displays real-time curves with automatic logging every minute, supporting up to three years of continuous recording. Old data is automatically cleared to maintain ongoing monitoring.

Q5: How do I ensure reliable testing for products of different sizes?
A5: LIB offers bespoke racks, trays, and quick-change fixture kits for small electronics to larger assemblies, ensuring repeatable, secure positioning for uniform exposure.

By consolidating precision environmental control into a compact, quiet, and programmable unit, LIB Benchtop Temperature Humidity Test Chambers enable faster, more reliable testing, helping labs meet international standards while saving space and time.

Contact LIB Industry today to learn how our benchtop chambers can streamline your testing, accelerate product development, and keep you steps ahead of the competition-right from your lab bench.