Product introduction of temperature humidity test chamberThe temperature humidity test chamber is an environmental climate test chamber that can simul
Free QuoteThe temperature humidity test chamber is an environmental climate test chamber that can simulate the temperature and humidity conditions. It can simulate different environmental conditions such as high temperature and high humidity, high temperature and low humidity, low temperature and high humidity, high temperature and low temperature, so as to detect the tolerance of the test sample to the environment and the possible physical or chemical changes.
It should be noted that not all constant temperature and humidity test chambers have humidity. When the temperature reaches above 95 degrees, there is no humidity, because the liquid is vaporized;
When the temperature reaches about 0 degrees, there is no humidity, because the water freezes.
Temperature humidity test chambers are mainly used in testing laboratories, manufacturers, and so on.
Any company that needs to test the tolerance of products, the reaction to the environment, and a long-term stable temperature and humidity environment, I believe you need such a test chamber.
Constant temperature humidity test chambers are often used in electronic appliances, military industries, plastics, hardware, chemicals, textiles, and other industries. Specific test products such as electronic parts, auto parts, notebooks, batteries, packaging, cosmetics, circuit boards, temperature, humidity meters, etc.
The constant temperature and humidity test chambers produced by Noki meet specific GB, MIL, IOS, IEC, AST standards, and are responsible for the test results.
Conventional temperature and humidity chambers meet the Chinese GB/T2423. GJB150A1/4 standards, and meet the reliability and stability performance parameters in various harsh environments, which can provide the basis for predicting and improving product quality and reliability.
The temperature humidity test chamber is mainly used for forced heating, forced cooling, forced humidification, and forced dehumidification to the indoor space through the air;
The temperature and humidity test chamber is equipped with an air room, a circulating air duct heating device, a cooling device, a humidifying device, and a circulating fan, and a wind deflector and a diffuser are installed on the top;
The temperature and humidity controller transmits signals according to the set temperature and humidity and the temperature sensing body in the constant temperature and humidity test box sends commands and controls the output of the heating humidifier through PID intelligent adjustment and SSR control module, the refrigeration unit works, and the circulating air is evenly distributed from the top. Blow out through the test space and then recover from the bottom to form a closed-loop control mode, so as to achieve the purpose of long-term stable operation.
⒈ GB11158 Technical Conditions of High-Temperature Test Chamber
⒉ GB10589-89 Technical Conditions of Low-Temperature Test Chamber
⒊ GB10592-89 Technical conditions of the high and low-temperature test chamber
⒋ GB/T10586-89 Technical Conditions of Damp Heat Test Chamber
⒌ GB/T2423.1-2008 Low-temperature test chamber test method
⒍ GB/T2423.2-2008 Test method for high-temperature test chamber
⒎ GB/T2423.3-2006 Damp heat test chamber test method
⒏ GB/T2423.4-2008 Test method for alternating damp heat
⒐ GB/T2423.22-2002 Test method for temperature change
⒑ IEC60068-2-1.1990 Low-temperature test chamber test method
⒒ IEC60068-2-2.1974 High-temperature test chamber test method
⒓ GJB150.3 high-temperature test
⒔ GJB150.4 low-temperature test
⒕ GJB150.9 Damp heat test
The inner and outer boxes of the temperature-humidity test chamber are made of SUS304 and plastic-sprayed steel plates respectively. The inner box has buckles and multi-layer sample racks (please consult sales for specific quantities), all of which are made of 304. The outer box is treated with sheet metal spraying, which is beautiful in color and corrosion-resistant.
Usually, the chamber has a single door, the left side open. It can also be made into double doors (need to customize).
There is a hollow heating and frost-proof observation window on the door, which is resistant to high and low temperatures and will not be affected by fog. It has LED lights, which are opened when in use and closed when not in use. The size of the conventional observation window is W400*H300mm. There is also a silicone rubber sealing strip on the door, which is resistant to high and low temperature, anti-aging, and has good sealing performance. In order to prevent condensation or frost on the door frame and the edge of the door during the low-temperature test, the door frame and the edge of the door are provided with electric heating defrosting device. The door handle adopts a non-reaction handle, which can open the door with one hand, is easy to operate, safe, and reliable.
The water tank is located in the lower part of the whole box, with an automatic water shortage alarm, which is more convenient for the operator to replenish the water source and prevent the equipment from drying out.
There is a 50mm diameter test hole on the left side of the box, equipped with a silicone rubber plug, which can be used for external test power lines or signal lines.
The control panel is on the upper left of the box, and the conventional control is the PID touch screen. User-friendly operation, full English version operating system.
The sound and light alarm system is above the control panel, with three colors of yellow (standby), red (alarm), and green (running). When the device is in different states, the corresponding indicator light will be on for a long time.
The drain outlet of the equipment is at the rear and bottom position. After connecting the drainpipe, it can be directly drained to the sewer without pollution. Because the test water requirements are all pure water, if conditions permit, or for test requirements, distilled water can also be used. Pure and distilled water, will not cause water pipe blockage/water tank rust. If tap water is used, impurities and minerals in tap water will block the internal circulating water channels of the equipment.
The small temperature and humidity chambers all use the castoer wheel, which is convenient for the experimenter to move the equipment. By simply releasing the footbrake, one person can transfer the entire chamber. Of course, before the transfer, it is necessary to cut off the power, cut off the water, cut off the water pipe, etc.
The temperature humidity chamber produced by Noki use 220V/380V voltage, 50 Hz. Voltage Hertz can be customized, please explain the situation when communicating the needs of the equipment, so as to avoid the situation that the equipment cannot be used after receiving it.
The compressor is the heart of the refrigeration system. One compressor can reduce the temperature to -40℃, two compressors can reduce the temperature to -70℃, three compressors can reduce the temperature to -120℃
Optional compressor brands: French TECUMSEH, German BOCK, etc.
TECUMSEH refrigeration compressor is mainly composed of shell, motor, cylinder, piston, starter, thermal protector, cooling system, etc. The compressor inhales low-temperature and low-pressure refrigerant gas from the suction pipe, drives the piston to compress it through the operation of the motor, and discharges the high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigeration cycle, thereby realizing compression→condensation→expansion → Evaporation cycle.
The nickel-chromium alloy electric heating type heater is used, and the heating power is large, and a heater is also provided on the bottom plate of the text box. The heating rate can reach 1.0-3.0℃/min.
The air circulation system generally consists of a centrifugal fan and a motor that drives its operation. It provides air circulation in the temperature humidity test chamber. Noki's circulation system adopts a temperature-resistant and low-noise air-conditioning motor and multi-blade centrifugal wind wheel.
7-inch resolution: LED backlight display screen.
Temperature and humidity setting (SV) actual (PV) value is directly displayed;
It can display the execution program number, segment, remaining time and cycle times, and display the running time;
Program editing and graphic curve display;
Fixed point or program action status display;
Reliable grounding protection device;
Leakage/open circuit protection;
Heater short circuit protection;
Blower motor overload protection;
Studio independent over-temperature, sound, and light alarm;
Refrigerator overpressure protection;
Refrigerator overload protection;
Power supply under voltage, overvoltage, phase loss protection;
1. Use environmental conditions: Temperature: 5~25℃ Relative humidity: ≤85%
2. Humidification water: pure water, not unfiltered tap water;
3. Power supply conditions:
AC380V three-phase (must be connected to protective ground wire)
Voltage allowable fluctuation range: ±10%V
Frequency allowable fluctuation range: 50/60HZ
Grounding resistance of a protective ground wire: ≦4Ω
The user is required to configure an air or power switch of the corresponding capacity for the equipment at the installation site, and this switch must be used independently for the equipment (can not be connected to a socket)
4. Power supply: AC380V/220V/
1. Cleaning and maintenance of the inside and outside of the constant temperature and humidity test chamber
(1) The internal impurities of the temperature humidity test chamber should be removed before operation.
(2) The power distribution room is cleaned at least once a year
Above, you can use a vacuum cleaner to absorb the indoor dust when cleaning.
(3) The exterior of the chamber must be cleaned more than once a year, and it can be wiped with soapy water before cleaning.
2. Inspection and maintenance of the humidifier in the temperature humidity test chamber. The water storage in the humidifier should be replaced once a month to ensure the water quality is clean, and the humidification water tray should be cleaned once a month to ensure smooth water flow.
3. Temperature humidity test chamber check over-temperature protector When the temperature humidity test chamber is running, the set maximum value of over-temperature protection should be increased by 20℃~30℃.
When the temperature in the temperature humidity test chamber rises to the set point of the over-temperature protection, the power supply of the heater will stop, and the "OVERHEAT" over-temperature warning light will be on, but the fan will still run. Be sure to check the over-temperature protector, whether it is set properly [wet bulb over-temperature protector is set to 120℃].
4. Removal of dust from the condenser of the temperature humidity test chamber. The condenser should be maintained regularly and monthly. Use a vacuum cleaner to absorb the dust attached to the cooling mesh of the condenser or use high-pressure air to spray the dust.
5. The replacement of the wet-bulb test cloth in the temperature humidity test chamber. When the surface of the test cloth is not clean or hardened, or after the temperature control is completed, the test cloth must be replaced before continuing to do the temperature and humidity control.
The test cloth should be replaced once every three months. When replacing, the temperature measuring body should be wiped with a clean cloth. When replacing a new test cloth, it should be cleaned first.
6. Check and adjust the water level of the wet bulb in the temperature humidity test chamber. The water level in the water tank should not be too high, so that the water overflows the water tank or is too low, so that the wet-bulb test cloth absorbs water abnormally, which affects the accuracy of the wet bulb. Full points.
The adjustment of water level of the water tank can adjust the height of the water tank.
7. If the temperature humidity test chamber is not used for a long time, the equipment should be energized regularly every month, and the energization time should not be less than 1 hour.
