Constant Temperature And Humidity Test Chamber-Linpin Instruments

Product Features

Product application:
The constant temperature and humidity test chamber is used for the components and materials of products related to electronics, electrical engineering, automobiles, motorcycles, aerospace, rubber, plastics, metals, ships, weapons, higher education institutions, and research units.

It examines their performance indicators under high and low-temperature variations.

Compliance with standards:
GB/T2423.1-2008
GB/T2423.2-2008
GB/T2423.3-2006
Chamber structure:
The chamber of the constant temperature and humidity test chamber is processed by a CNC machine tool, resulting in an aesthetically pleasing, elegant, and novel design. It features a non-reaction handle for easy operation.

The inner chamber is made of imported high-grade stainless steel (SUS304) mirror plate or fabricated using 304B TIG welding, while the outer chamber is made of A3 steel plate with spray plastic coating.

A microcomputer temperature and humidity controller is used, ensuring precise and reliable temperature and humidity control.

A large observation window with a lighting lamp keeps the inside of the box bright. The use of double-glazed glass allows for a clear view of the internal conditions at any time.

An independent temperature limit alarm system is installed. If the temperature exceeds the set limit, the system will automatically interrupt the operation to ensure the safe running of the experiment and prevent accidents.

A test hole with a diameter of 50 mm is provided on the left side of the box.
Control system:
The constant temperature and humidity test chamber features Japanese imported digital display touch buttons and a PID microcomputer SSR temperature controller.

The external boiler steam humidifier has an energy-saving function, capable of reducing energy consumption by 70%.

The main electrical control components use the imported well-known brand “Schneider” to better control the temperature.

The insulation system is filled with superfine glass fiber in the insulation area, and the connections between the inner and outer chambers are made of non-metallic materials that are resistant to high and low temperatures, effectively reducing heat transfer.

It is equipped with an automatic calculation function that can immediately correct changes in temperature and humidity conditions, making the control of temperature and humidity more precise and stable.
Refrigeration system:
The refrigeration unit of the constant temperature and humidity test chamber uses a fully enclosed compressor originally from France, specifically the “Tecumseh” brand.

The refrigeration system is designed with a single-stage or two-stage low-temperature loop system.

It features a drying filter from the United States by “Alco,” an oil separator from Taiwan by “Guan Ya,” and an electromagnetic valve from Italy by “Castel.”

A multi-blade fan provides powerful air circulation, eliminating any dead zones and ensuring uniform distribution of temperature and humidity within the test area.

The airflow design, including both supply and return air, meets the testing standards for air pressure and velocity, and allows for a quick recovery of temperature and humidity when the door is opened.

The heating, cooling, and humidifying systems are completely independent, which enhances efficiency, reduces testing costs, extends service life, and lowers the failure rate.

Product Parameter

Model	Studio Size（DWH）mm	Dimension（DWH）mm
LRHS-101-LH	450×450×500	1160×1000×1610
LRHS-225-LH	500×600×750	1210×1150×1870
LRHS-504-LH	700×800×900	1260×1340×2070
LRHS-800-LH	800×1000×1000	1370×1550×2170
LRHS-1000-LH	1000×1000×1000	1560×1550×2170

Temperature range	0℃～150℃
Temperature uniformity	≤2℃（unladen）
Temperature fluctuation	±0.5℃（unladen）
Humidity range	20%～98% RH
Humidity uniformity	+2% -3% RH
Humidity fluctuation	±2%
Heating rate	1.0～3.0℃/min
Cooling rate	0.7～1.0℃/min
Time Setting Range	1～60000M
Test hole	Mounted on the left side of the machine for use with external test power or signal cables
Viewing window	210×275mm / 395×395mm（effective vision）
Outer case material	High quality A3 steel plate electrostatic spraying
Inner box material	Imported high-grade stainless steel SUS304
Insulation material	Rigid polyurethane foam + glass fiber
Temperature Controller	Adopting Japan “UMC” brand temperature meter
Temperature Sensor	PT100 Platinum resistance thermometer
Cooling method	Stand-alone cooling
Compressor	Tecumseh, France
Standard configuration		1 roll of wet bulb gauze, 2 sample racks, with condensate catch pan and drain out of the box
Safety		Compressor overpressure overload, fan motor overheating, the whole machine phase / reverse phase, over-temperature, the whole equipment timing, leakage protection, overload and short circuit protection.
Supply Voltage		AC380V±10% 50Hz
Power		4.0kW/5.5kW/8.5kW/11.5kW/11.5kW
Operating environment		5℃～＋28℃ ≤85% RH
Note: 1、the above data are in the use of ambient temperature of 25 ℃ and well-ventilated conditions measured 2、Can be customized according to the user’s specific test requirements of non-standard constant temperature and humidity test chamber etc. 3、This technical information, subject to change without notice

Industry News

A Brief Discussion on the Impact of Low Temperature in Thermal Shock Test Chambers on Test Samples

When test samples are exposed to low temperatures in a thermal shock test chamber, they may suffer certain adverse effects. This is because the physical properties of the materials can change under extreme cold, potentially leading to performance degradation. So, what specific impacts can occur?

Technical Guidelines for Safe Operation and Standardized Use of Low Temperature Test Chambers

Low temperature test chambers serve as critical equipment for material low-temperature performance verification, electronic component reliability testing, and biological sample preservation.

How to Choose the Right High-Low Temperature Test Chamber?

As a precision testing instrument, the high-low temperature test chamber is designed to evaluate how products withstand changes in environmental temperature and humidity.