A resistor that fails after 200 hours in the field. A connector that corrodes after one humid summer. A sensor module that drifts out of spec
the moment the temperature climbs past 40°C. These are the failures that small-component manufacturers dread most, because they show up only after the product has shipped - unless they are caught first, on the bench, before mass production begins.
For a customer in the Netherlands, the TH-50 Temperature Humidity Desktop Chamber has already proven itself in practical use, with the customer sharing, "it is working well so far" and later asking about calibration service and in-house calibration support in the Netherlands.
This article looks at whether the TH-50 Temperature Humidity Desktop Chamberfrom LIB Industry is built to catch those failures, walking through its design requirements, its working principle, its test methods, real customer feedback, and how it compares with larger reach-in chambers.
TH-50 Temperature Humidity Desktop Chamber for Electronic Component Testing
Design Requirements Based on IEC 60068 Small electronic components - resistors, capacitors, connectors, PCB assemblies, sensor modules
- are commonly qualified against the IEC 60068 environmental testing series. IEC 60068-2-1 and IEC 60068-2-2 define cold and dry-heat endurance testing, IEC 60068-2-30 covers cyclic damp heat, and IEC 60068-2-78 covers steady-state damp heat. To meet these clauses, a chamber must hold temperature within ±0.5°C, control humidity within ±2.5% RH, and maintain airflow uniformity so that no test specimen sits in a hot or cold pocket. The TH-50 was engineered against exactly these tolerances, with a working volume of 50 liters, a temperature range of -40°C to +150°C, and a humidity range of 20% to 98% RH - wide enough to run the full IEC 60068 damp-heat and cold-storage sequences on one machine.
Working Principle of the LIB Industry TH-50 Inside the TH-50, a PT100 Class A platinum resistance sensor reads the chamber temperature at 0.001°C resolution and feeds it to a PID control loop, which drives a compressor-based cooling circuit and a fast electric heating element. Humidity is generated by a closed-loop water system that vaporizes water into the airflow while a hygrometric sensor tracks RH in real time. A centrifugal fan pushes conditioned air through baffles positioned around the chamber wall, so temperature and humidity reach every corner of the 50-liter space at the same rate - a detail that matters directly for IEC 60068 uniformity requirements.
Test Methods Aligned with IEC 60068 Running an IEC 60068-2-30 cyclic damp-heat test on the TH-50 means programming a 24-hour cycle: temperature rises from 25°C to 55°C while humidity is held above 93% RH, then the chamber cools back down, repeated for the number of cycles the component's specification calls for. For IEC 60068-2-1 cold testing, the TH-50 can pull down at 1°C per minute to as low as -40°C and hold that temperature for the dwell time the standard requires. The 7-inch touchscreen controller stores up to 120 programs with 100 steps each, so an engineer can save a validated IEC 60068 profile once and re-run it on demand without re-entering parameters.
An Apple Supplier's Experience with LIB's TH-50 Temperature Humidity Desktop Chamber
One of LIB Industry's customers, a component supplier in Apple's manufacturing chain, purchased a TH-50 Temperature Humidity Desktop Chamber to run performance
qualification on small connector and sensor parts before they reached final assembly. Several things stood out to their QA team. Safety came first: the unit carries CE, UL, and CSA certification, with over-temperature, low-water, and door-interlock protection built in, so operators could run unattended overnight cycles with confidence. Test accuracy came next - the ±0.5°C and ±2.5% RH tolerances gave them repeatable data across every batch, which mattered for their audit records. Cost-effectiveness also factored in: a 50-liter desktop unit delivered lab-grade precision at a fraction of the price and footprint of a walk-in chamber. LIB Industry customized the interior racking free of charge to fit their specific connector trays, and the standard 3-year full warranty plus lifetime technical support meant they never had to worry about long-term parts availability. LIB Industry's engineers also provided on-site training so the operating team could run power-on burn-in tests and full IEC 60068 cycles independently from day one.
TH-50 Desktop Chamber vs. Reach-In Temperature Humidity Chamber - How to Choose
| Feature |
|
|
|---|---|---|
| Chamber volume | 50 L | 200–1000+ L |
| Footprint | 800 × 1,050 mm (0.84 m²) | 1.5–3 m² or more |
| Typical sample size | Small components, PCBs, connectors | Full assemblies, large modules |
| Temperature range | -40°C to +150°C | -70°C to +180°C (model-dependent) |
| Placement | Sits on any lab bench | Requires dedicated floor space |
| Best fit | R&D labs, incoming QC, small-batch screening | Production-line qualification, large or multiple units |
If the parts under test fit inside a shoebox and the priority is fast iteration during R&D or incoming inspection, the TH-50 is the more practical choice - it needs no dedicated room and can be installed the same day. If the products being validated are full assemblies, multiple large units at once, or oversized modules like automotive control units, a reach-in chamber's larger volume becomes necessary. Many of LIB Industry's clients run both: a TH-50 on the bench for daily component screening, and a reach-in unit reserved for final-stage assembly testing.
FAQs on the TH-50 Temperature Humidity Desktop Chamber
Q1: Can the TH-50 run unattended overnight tests?
Yes. Built-in safety interlocks - over-temperature cutoff, low-water shutdown, and door-open detection - allow multi-hour or multi-day IEC 60068 cycles to run without an operator present.
Q2: Does LIB Industry offer custom fixtures for small or irregularly shaped components?
Yes, custom racks, trays, and probe fixtures are designed and supplied free of charge based on the customer's sample dimensions.
Q3: What warranty and support come with the TH-50?
Every unit ships with a 3-year full warranty and lifetime technical support, backed by a global spare-parts network that delivers critical components within 7–15 days.
Q4: How is the TH-50 shipped, and is installation support included?
The chamber ships in a reinforced crate suitable for international freight, and LIB Industry provides installation guidance and, where needed, on-site or remote training for calibration and first-run setup.
Q5: Can the TH-50 be serviced remotely if a fault occurs?
Yes. The touchscreen controller's Ethernet connectivity allows LIB Industry's support team to review error logs and calibration data remotely before dispatching a technician, shortening most troubleshooting to a single call.
Contact Us for Your TH-50 Temperature Humidity Desktop Chamber Needs
If you're looking for reliable temperature and humidity testing equipment for electronic components, PCBs, connectors, sensors, or other small products, whether you need a TH-50 Temperature Humidity Desktop Chamber, a Drive in Thermal Humidity Test Chamber, a Reach-In Thermal Humidity Test Chamber, or a customized environmental testing solution, don't hesitate to contact LIB Industry.
Contact LIB Industry today to discuss your IEC 60068 testing requirements and find the right temperature and humidity chamber for your products. With a 3-year full warranty, lifetime technical support, customized fixtures and racks, remote troubleshooting, fast spare parts delivery, and installation and training support, LIB Industry helps manufacturers achieve reliable, repeatable, and efficient environmental testing for electronic components and assemblies.
Reference
LIB Industry Technical Team – Technical information, IEC 60068 testing methods, product specifications, customization, calibration support, and application guidance for temperature and humidity testing equipment.
