High and Low Temperature Humidity Cycling Test Chamber

High-Low Temperature Cycling/Humidity Cycling Test Chambers, also known as environmental test chambers, are essential equipment for industries including aerospace, automotive manufacturing, naval armaments, electronics and electrical engineering, and instrumentation. They are used to evaluate the performance metrics of materials and components employed in these sectors under conditions of extreme temperature, humidity, and alternating high-low temperature and humidity cycles. Primarily, these chambers assess the thermal resistance, cold resistance, dry resistance, and moisture resistance of products within these sectors. Examples include testing silicone for melting points and cold resistance; evaluating the stability of electronic and electrical products under extreme environmental conditions; accelerating the ageing of insulating materials and polymers; and examining materials for cracking, embrittlement, or deformation under extreme conditions.

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Product Introduction
Selection Table
Industry Standards
Safety Protection
Optional Accessories

1. 7-inch colour touchscreen controller supporting remote networked operation (Ethernet, optional), enabling effortless remote control, programme configuration, parameter viewing, curve settings, fault diagnosis and more. Supports USB data export for records and operational curve export;

2. Features an expansive programme capacity of 100 groups, 999 segments, and 999 cycle steps. Each segment supports a maximum duration of 99 hours 59 minutes. Multiple operational parameter sets can be pre-configured. The controller incorporates a screen lock function to prevent accidental operation from halting the process;

3. Single-screen display of set parameters, current programme number, elapsed/remaining time, heater operational status, and remaining cycle count; Capable of displaying programme operation curves, freely switching between setpoint control and programme control, freely switching between Chinese and English interfaces, automatically detecting faults, and displaying alarms;

4. The refrigeration system employs a French-made Tecumseh hermetically sealed compressor unit, featuring an innovative dual-stage cascade technology low-temperature circuit design. Utilising a multi-wing blower for powerful air circulation, it eliminates any dead zones, ensuring uniform temperature and humidity distribution throughout the test area;

5. The refrigeration system employs a classic arrangement and combination, with efficient operation of heating, cooling, and humidification systems. Its stability has been proven through years of market testing, ensuring safety and reliability;

6. Imported low-noise forced-air fans feature a recirculating airflow design for both supply and return air. Air pressure and velocity comply with testing standards. The unique duct design ensures uniform air distribution within the chamber, thereby guaranteeing temperature uniformity;

7. Humidification system piping and control circuits are segregated to prevent faults caused by moisture ingress or leaks in humidification lines, enhancing safety and facilitating maintenance of both hydraulic and electrical systems;

8. Automatic parameter retention during emergencies with power-on recovery functionality, complemented by sensor self-diagnostics and alarms for over-temperature and malfunctions;

9. The inner chamber is constructed from 304 stainless steel, while the outer shell utilises high-quality cold-rolled steel plate with an electrostatic powder coating finish. The paintwork is durable and colourfast, ensuring long-lasting appearance;

10. Insulation comprises polyurethane foam with a thickness of 100mm, delivering excellent thermal performance. The outer surface of the test chamber remains free from frost and condensation;

11. An oversized observation window employs triple-layered tempered glass with a hollow-core thermal heating film to prevent fogging and ensure clear visibility. A high-temperature-resistant illumination lamp is fitted for enhanced viewing clarity;

12. The equipment features a user-friendly design, including a standard 50mm diameter test port for connecting external power or signal cables;

Model	HLSJ-100- I//Ⅲ	HLTSJ-150- I//Ⅲ	HLTSJ-225- I//Ⅲ	HLTSJ-408- I/Ⅱ/Ⅲ	HLTSJ-000- I//Ⅲ	HLTSJ-1000- I/Ⅱ/皿
Temperature Range	1:-20~150℃ Ⅱ:-40~150C I:-60~150 ℃
Temperature Resolution	0.1℃
Temperature Fluctuation	±1℃
Temperature Uniformity	±2℃
Heating Rate	13C/min
Cooling Rate	0.7~1C/Min
Humidity Range	30~98%R
Humidity Resolution	14RH
Humidity Fluctuation	±3%RH
Humidity Pseudo-Cover	3~5%RH
Alternating Pattern	1:-10~80 ℃ Ⅱ:-30~80 ℃ I:-50~80 ℃
Controller	7-inch touchscreen control panel
Pressure Compactor	Air-cooled fully enclosed design
Refrigerant	DuPont fluorine-free refrigerant
Refrigeration Method	Fuden refrigeration
Power Supply Voltage	AC220V/15/20/25A		AC350V/12/13/204	AC350V/12/13/22	AC30V/24/29/22A	AC330V/24/32/34A
Casing Material	Cold-rolled steel plate with powder coating (customisable 304 brushed stainless steel)
Insulation Layer	Polyurethane foam reinforced with glass fibre wadding
Inner Chamber Material	SUS304 stainless steel
Door Seal Resistance	Double-layer seal (premium silicone gasket customised for corrosion resistance, low-temperature tolerance and ageing resistance)
Safety Features	Overload, overcurrent, damp-proofing, earthing, electric shock protection* Over-temperature alarm* Compressor overload, overpressure, over-temperature protection
Standard Accessories	Inspection window, test port, emergency stop switch
Optional Accessories	Printer, tri-colour indicator lights, USB port, independent temperature limiter controller
Inner Chamber Dimensions (m)	500400500	500500600	600500750	800600850	10008001000	100010001000
Overall Dimensions (m)	102010501450	102011201500	111012001600	130012301750	151014601860	1510x1600x1900
Volume	100L	150L	225L	408L	800L	1000L
Power Consumption	3.5/4.5/5.5KW	3.5/4.5/5.5KW	6/6.8/8KW	6/7/8.5KW	9/11/12KW	9/12/13KW
Net Basket	186KG	193KG	216KG	286KG	324KG	355KG

1. GB/T 10586-2006 Technical Specifications for Humidity and Heat Test Chambers
2. GB 11158-2008 Technical Specifications for High Temperature Test Chambers
3. GB/T 5170.2-1996 Calibration Methods for Basic Parameters of Environmental Test Equipment for Electrical and Electronic Products - Temperature Test Equipment
4. GB/T 2423.1-2008 Environmental Testing of Electrical and Electronic Products - Part 2: Test Methods - Test A: Low Temperature
5. GB/T 2423.3-2006 Environmental Testing of Electrical and Electronic Products - Part 2: Test Methods - Test B: Low Temperature
6. GB/T 2423.4-2008 Environmental Testing of Electrical and Electronic Products — Part 2: Test Methods — Test Db: Alternating Humidity and Heat (12 h + 12 h Cycle).

1. Over-temperature alarm
2. Overcurrent and overload protection
3. Rapid fuse protection
4. Earth leakage protection
5. Phase loss protection
6. Earth leakage circuit breaker
7. Low water level protection

1. Six-channel temperature recorder

Shanghai Dengsheng Instrument Manufacturing Co., Ltd

Shanghai Dengsheng Instrument Manufacturing Co., Ltd. is a high-tech enterprise integrating R&D, production, sales, and service. We specialize in the manufacture of high-end laboratory equipment, including ovens, incubators, industrial furnaces, and environmental test chambers.

We boast an 8,000-square-meter modern production facility, a dedicated R&D team, 23 national patents, and ISO-9001 quality management system certification. Our solutions are widely used in cutting-edge fields such as aerospace, semiconductors, biomedicine, automotive, and new materials. We have established in-depth partnerships with top universities and industry leaders, and our products are exported to many countries and regions around the world.

Adhering to the principles of "Integrity, Innovation, and Win-Win," we are committed to becoming your trusted partner with reliable quality and dedicated service.