Humidity test chamber

Introduction

A humidity test chamber is a controlled-environment test chamber used to test the products and the materials under the controlled humidity and the temperature conditions, and it is used in the electronics, the automotive, the aerospace, the pharmaceutical, and the many other industries for the environmental testing. The humidity test chamber consists of an insulated enclosure, a temperature control system, a humidity generation and a control system, which uses the steam or the water spray and the dehumidification, a fan for the air circulation, and the instrumentation for the monitoring of the temperature and the humidity, and it provides a controlled temperature and a relative humidity, with features such as the programmable temperature and humidity profiles, the data logging, and the safety devices; in operation, the test article is placed in the chamber, and the temperature and the humidity are controlled according to the test profile, and the performance and the behavior of the test article are observed, and the chamber is used for the testing of the resistance to the humidity, for the testing of the condensation and the corrosion, for the testing of the electronics and the electrical components, for the testing of the packaging, for the accelerated aging, for the qualification and the acceptance testing, and for many other applications, following the standard test methods, such as the IEC 60068 and the MIL-STD-810; the humidity test chamber is available in various sizes, from the small bench-top models to the large walk-in chambers. Humidity test chambers are used in the electronics industry, in the automotive industry, in the pharmaceutical industry, in the aerospace industry, and for many other applications. With their humidity testing, humidity test chambers are essential for the environmental testing.

Humidity Test Chamber LHMTC-T2016

Humidity Test Chamber features a 1000 control, ensuring accurate temperature and humidity regulation for consistent and reliable testing. The fast temperature change rate enables quick t...

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Humidity Test Chamber LHMTC-T2015

Humidity Test Chamber features an 800 operation and precise adjustments. The advanced mist control technology ensures accurate humidity regulation for consistent environmental conditions...

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Humidity Test Chamber LHMTC-T2012

Humidity Test Chamber features a 225 data monitoring that can track and analyze testing conditions for better control and efficiency. This test equipment is designed to meet the rigorous...

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Humidity Test Chamber LHMTC-T2013

Humidity Test Chamber features a 408 usability. Its precision humidity calibration delivers reliable moisture control for stable testing performance. Our chamber has automated water repl...

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Humidity Test Chamber LHMTC-T2014

Humidity Test Chamber features a 600 operation system to minimize disruptions in the laboratory and research environments. The multi-layer insulation design enhances thermal stability, r...

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Humidity Test Chamber LHMTC-T2010

Humidity Test Chamber features a 150 L capacity, providing sample space for various testing needs. It offers a wide humidity range, allowing flexible testing across different environment...

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Humidity Test Chamber LHMTC-T2011

Humidity Test Chamber features a 180 insulation minimizes heat loss in stable and reliable environmental conditions. It offers energy-efficient operation, reducing power consumption whil...

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Standards

GB/T 10586-2025-Specifications for damp heat testing chambers

IEC 60068-2-30-Environmental testing-Test Db: Damp heat, cyclic

IEC 60068-2-38:2021-Environmental testing-Test Z/AD: Composite temperature/humidity cyclic test

GB/T 2423.34-2012-Environmental testing-Test Z/AD: Composite temperature/humidity cyclic test

Complies with the above standards, but is not limited to them.

Features

1. Humidity test chamber for controlled temperature and humidity environmental testing.

2. Programmable chamber with heating, cooling, humidification and dehumidification for stability testing.

3. Suitable for electronics, pharmaceutical, automotive, materials, packaging and product reliability testing.

4. Includes chamber body, refrigeration system, humidifier, controller, shelves and operation manual.

5. Supports constant or cyclic temperature (-40 to 150 C) and humidity (10-98% RH) per IEC/ISO/ASTM standards.

FAQ

Q1: What testing scenarios is this chamber mainly applied to?

A: The humidity test chamber creates controlled temperature and humidity environments for product and material testing under simulated climatic conditions. Used for electronics (semiconductor/PCB reliability (temperature-humidity bias THB, 85 C/85% RH - JEDEC, IPC), MSD baking, corrosion, battery testing), pharmaceutical (stability testing (ICH Q1A(R2): long-term 25 C/60% RH, intermediate 30 C/65% RH, accelerated 40 C/75% RH; drug product shelf-life, excipient stability per USP <1196>), automotive (components under heat/humidity (ISO 16750, LV 124), interior materials, corrosion), materials (polymer/plastic aging, coating adhesion, paper/textile moisture effects, metal corrosion (salt spray is different chamber)), packaging (barrier properties, seal integrity under humidity, carton compression at high humidity), and general product reliability (cyclic temp/humidity, thermal shock with humidity, environmental stress screening ESS). Temp range typically -40 to 150 C (some -70 to 180 C), humidity 10-98% RH (within temp limits - low humidity at low temp is limited by frost). Programmable cycles/ramp rates.

Q2: What standards does the chamber comply with?

A: Complies with IEC 60068-2-78 (damp heat, steady state), IEC 60068-2-30 (damp heat, cyclic), IEC 60068-2-1/2 (cold/dry heat), ISO 16750 (automotive), JEDEC JESD22-A101 (temp-humidity bias), IPC/JEDEC J-STD-020/033 (MSD), ICH Q1A(R2) (pharmaceutical stability), ASTM D4329/D4587 (material weathering), GB/T 2423, and GB/T 10586 (humidity chambers). Hardware meets temp accuracy (+/-0.5-1 C), uniformity (+/-2-3 C), humidity accuracy (+/-2-3% RH), ramp rate (1-5 C/min standard), and safety (over-temp protection, refrigerant safety, IEC 61010). For pharmaceutical stability, follow ICH Q1A and cGMP (21 CFR 211): chamber must be qualified (IQ/OQ/PQ), mapped (temp/humidity uniformity at multiple points), continuously monitored with calibrated sensors, and have alarms (24/7 notification) with backup power or contingency plan. For electronics, follow JEDEC/IPC. For ISO 17025, maintain calibration records (temp/humidity mapping, sensor calibration traceable to national standards, as-found/as-left).

Q3: What is the warranty period for the whole chamber and key components?

A: Whole chamber covered 12-24 months (environmental chambers often 1-2 years; some 3 years for compressor). Refrigeration compressor (wear - 5-10 years; cascade for low temp), humidifier/heater (wear - scale buildup, element burnout 2-7 years), sensors (temp/humidity - drift, 3-7 years), seals/gaskets (wear - 2-5 years), and water filter (consumable - deionized water for humidification) are consumables/accessories. Damage from improper use, using tap water in humidifier (scale buildup - use DI/deionized water, clean regularly), refrigeration leak (loss of cooling - repair), door seal failure (humidity/temp non-uniformity - replace), over-temperature, power surges (use UPS for stability monitoring), or unauthorized repair (refrigerant - certified HVAC) is excluded. Extended warranty and service contracts (annual calibration, preventive maintenance, compressor replacement) common for stability chambers (uptime critical for pharma). Compressor 5-10 years; chamber body 10-20 years; sensors 3-7 years; humidifier 2-7 years (water quality dependent).

Q4: Is this device difficult to operate? Is professional training required?

A: Operation requires trained lab/QC personnel (familiar with environmental testing standards). Workflow: program controller (set temp/humidity setpoints or cycle profile, ramp rates, duration), place samples on shelves (leave space for airflow - do not block circulation ports), close door, start program, monitor (controller displays actual temp/humidity; for pharma stability, continuous data logging with independent calibrated sensor; alarms notify deviation), end of test (ramp back to ambient, remove samples, record data). Training 1-2 days provided (programming, standards, calibration, troubleshooting). Safety: HIGH/LOW TEMP (chamber can be -40 to 150 C - burns/frostbite when opening; use gloves, allow samples to equilibrate; do not reach in immediately), HUMIDITY/HOT WATER (humidifier uses hot water/steam - burn hazard; use DI water; humidifier can produce steam), REFRIGERANT (if leak, ventilate; some refrigerants (R22, R404A) are greenhouse gases - use certified technician; do not vent), ELECTRICAL (high-power, proper grounding, dedicated circuit, lockout/tagout for service), CONDENSATION (when opening cold/humid chamber, water condenses - wipe dry, prevent drips on samples/electronics), SAMPLE COMPATIBILITY (do not place flammable/explosive samples (risk at high temp); outgassing samples can contaminate chamber/other samples - use dedicated chamber or vent), for pharma stability: chamber deviation (temp/humidity outside range) can invalidate stability time points - have SOP for deviation handling, backup chamber, 24/7 alarm. Do not overload chamber (affects uniformity). Use only DI/deionized water in humidifier (tap water causes scale, corrosion, contamination).

Q5: What is the typical lead-time for order delivery?

A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.

Q6: Is regular calibration required? What is the recommended calibration cycle?

A: Calibrate every 6-12 months: temperature and humidity at multiple points and multiple chamber locations (uniformity mapping - 9-15 points per IEC/ISO), using calibrated reference sensors (traceable to NIST/PTB/NIM). Routine: verify display with independent sensor (weekly/monthly), check water level/quality (daily), clean humidifier/condenser (monthly), inspect door seal (daily). For pharma stability (ICH/GMP): continuous monitoring with independent calibrated sensor, annual mapping (or after relocation/repair), and 24/7 alarms. Recalibrate after compressor replacement, sensor replacement, relocation, or deviation. For ISO 17025/GMP, maintain calibration certificates, mapping data (as-found/as-left), sensor IDs, maintenance logs, and IQ/OQ/PQ documentation. Humidity sensors drift more than temp - calibrate at multiple RH points (e.g., 30, 60, 90% RH) using salt solutions or reference hygrometer. For stability chambers, calibration is critical - out-of-tolerance can invalidate months of stability data.

Q7: Are supporting consumables universal?

A: Temp/humidity sensors (specific to controller - use OEM or certified compatible), water filter (specific or universal inline), door gasket (specific to chamber size - OEM or custom), DI water (universal, must be deionized), and refrigerants (specific to system - certified technician only). Long-term cost: energy (high, continuous operation), water (DI, ongoing), sensor calibration (annual), humidifier cleaning/scale removal, and occasional compressor/sensor replacement. For pharma stability, 24/7 operation = high energy cost and wear.

Q8: Can I customize parameters or supporting accessories?

A: Customization includes temp range (standard -40 to 150 C; extended -70 to 180 C; high-temp only 200+ C), humidity range (10-98% RH within temp limits; low-humidity <10% with dry air purge), chamber size (bench-top 30-100 L, floor 200-1000 L, walk-in rooms), ramp rate (standard 1-3 C/min, fast 5-20 C/min for thermal cycling), refrigeration (single-stage (to -20 C), cascade (to -70 C), LN2 boost), control (programmable PID, touchscreen, multiple programs, USB/Ethernet, data logging, 21 CFR Part 11, remote monitoring/alarm), features (glass view window, interior light, access ports (cable, sensor), shelves (adjustable, perforated), dehumidification (mechanical or desiccant), explosion-proof (ATEX for flammable), CFC-free refrigerant, stainless interior), accessories: calibrated temp/humidity data logger, extra shelves, water purification system (DI), spare sensors, chart recorder, validation package (IQ/OQ/PQ, mapping), certifications (CE, ISO 9001, IEC 61010, ICH compliance, ATEX).

Q9: Does the purchase include on-site installation and commissioning service?

A: Standard delivery includes chamber, controller, shelves, power cord, manual (calibrated sensors, water filter, validation docs often separate). On-site installation, qualification (IQ/OQ/PQ), and operator training ARE typically included or REQUIRED for humidity chambers (professional installation (electrical, water, refrigeration check), initial temp/humidity mapping, programming, and user training; manufacturer/certified technician standard, especially for pharma stability and walk-in rooms). Always perform empty-chamber mapping and load mapping before use for regulated applications. For pharma stability, IQ/OQ/PQ documentation mandatory.

Q10: What types of samples are compatible with this equipment?

A: Compatible: electronics (PCBs, semiconductors, batteries, components), pharmaceutical products (tablets, capsules, APIs, packaging - stability), automotive components, polymers/plastics/coatings, paper/textiles, packaging materials, and general products. Not compatible: flammable/explosive materials (high temp/humidity can increase risk - use explosion-proof chamber or avoid), samples emitting corrosive/toxic fumes (contaminate chamber, damage sensors/coils - use dedicated vented chamber), live biological samples (unless incubator-specific; this is environmental test chamber, not CO2 incubator), radioactive materials (licensed/shielded), or samples requiring direct water spray (rain test chamber 3208 is different). For pharma stability: place samples in their marketed packaging, monitor continuously, handle deviations per SOP. For electronics THB (85/85): bias voltage may be applied through access ports - ensure no condensation on energized parts. Load chamber to <=50% volume for airflow; do not block circulation fans.