| Equipment parameters |
| 1. 1Device name | Programmable high and low alternating constant temperature and humidity test chamber |
| 1.2.Device mode | XHD-50L/100L/80L/150L/408L |
| 1.3. Test hole | Test hole 50mm, one on the left |
| 1.4.Inner box size | (W400*H500*D400,unit:mm) |
| 1.5.Outer box size | (About W1100*H1615 *D1425,unit:mm) |
| 1.6.Temperature range | -20ºC~+150ºC |
1.7.Humidity range
| Humidity range:20~98%R.H
|
| 1.8.Control accuracy | Temperature resolution:0.01ºC | Temperature deviation:±1ºC |
| Temperature uniformity: ≤ 2ºC | Temperature fluctuation: ±0.5ºC |
| Humidity resolution: 0.1%R.H | Humidity deviation: ±2%R.H |
| Humidity uniformity: ≤ 3%R.H | Humidity fluctuation: ± 2%R.H |
| Heating time: -20 ° C →+150 ° C The whole process averages about 3 ° C /min. | Cooling time: +150 ° C →-20 ° C the whole process averages about 1 ° C /min |
| Note: The above parameters are measured when the ambient temperature is +25ºC, the relative humidity is less than 85% R.H, and there is no sample |
| 1.9.Reference standards | 1.GB/T 2423.1-2008/IEC6008-2-1-2007 Environmental testing for electrical and electronic products - Part 2: Test methods - Test A: Low temperature
2.GB/T 2423.2-2008/IEC6008-2-2-2007 Environmental testing for electrical and electronic products-Part 2: Test methods Test B: High temperature
3.GB/T 2423.3-2006/IEC6008-2-28:2007 Test Ca: constant damp heat test method
4.GB/T 2424.5-2006 Electrical and electronic products environmental test temperature test chamber performance confirmation
5.GB/T 2424.6-2006 Electrical and electronic products environmental test temperature and humidity test chamber performance confirmation
6.GB/T 2424.7-2006 Electrical and electronic products environmental test test A and B(with load) temperature test chamber measurement
7.GB/T 2423.22-2008 Environmental test of electrical and electronic products Test Nb: Temperature change of the specified temperature change rate
8.GJB 150.3A-2009 high temperature test method
9.GJB 150.9A-2009 wet heat test method
10.GB/T 5170.18-2005 Electrical and electronic products environmental test equipment basic parameter verification method temperature/humidity combined cycle test equipment
12.GB/T 10586-2006 wet heat test chamber technical conditions |
| Description of key accessories |
| Part name | Brand | Application description |
| Inner box | Imported 304 stainless steel | 304 stainless steel material has good rust resistance and corrosion resistance |
| controller | Taiwan
Taitong | It is the control center of the whole equipment, and the operation of the equipment depends on it |
| Freeze one of the four large piecescompressor | France
Taikang | It's the heart of the refrigeration system. It inhales low-temperature and low-pressure refrigerant gas from the suction tube, drives the piston to compress it through the motor operation, and discharge the high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigeration cycle, so as to achieve the refrigeration cycle of compression → condensation (heat release)→ expansion → evaporation (heat absorption). Match different compressors according to the low temperature range and the size of the inner tank |
| Freeze two of the four large pieces condensr | Taiwan
Keviva | Air cooling and water cooling escort the cooling of the freezing system to ensure that the temperature of the freezing system is kept in a safe range, otherwise the freezing system will stop working, and the machine will burn out seriously. |
Freeze three of the four large piecesevaporator
| Taiwan
Medium force | The low temperature condensate "liquid" body through the evaporator, and the outside air for heat exchange, "gas" heat absorption, to achieve the effect of refrigeration |
| Thermal expansion valve | Denmark | The role of the expansion valve in the refrigeration system: (1) throttling and reducing pressure: the high temperature and high pressure liquid refrigerant after condensing the condenser is throttling and reducing pressure, becoming a low temperature and low pressure vapor liquid mixture that is easy to evaporate, and entering the evaporator to evaporate and absorb external heat; Adjust the flow: according to the temperature signal obtained by the temperature sensing bag or the air box head, the expansion valve can automatically adjust the refrigerant flow into the evaporator to meet the changing needs of the refrigeration load. (3) Maintain a certain overheat, prevent liquid shock and abnormal overheating the expansion valve through the adjustment of flow rate to make the evaporator have a certain superheat, to ensure the effective use of the total volume of the evaporator, to avoid liquid refrigerant into the compressor caused by liquid shock; At the same time, it can control the superheat in a certain range to prevent the occurrence of abnormal overheating. |
| Filter dryer | Denmark | Filter all impurities in the freezing system, do not worry about changing frequently, the service life of the filter dryer is 7-10 years |
| Intermediate relay | | Used in relay protection and automatic control systems to increase the number and capacity of contacts. It is used to transmit intermediate signals in the control circuit. |
| Solid-state relay | Taiwan
| The input end uses a small control signal to directly drive the large current load |
| Thermal overload relay | | It is used for overload protection of motors or other electrical equipment and electrical lines |
| Circuit breaker | South Korea LG | A switchgear that can turn on, carry and turn off the current under normal loop conditions, and can turn on, carry and turn off the current under abnormal loop conditions (including short circuit conditions) for a specified period of time, to protect equipment safety |
| South Korea LG | Taiwan Mingwei | Output for weak points in electrical parts |
| Mixing chamber machine | Taiwan Shang Yu | Test chamber damp heat air supply system, long-term operation, quality must be good |
| Heating tube | Domestic quality | Titanium alloy material is the most durable, long-term operation, quality must be good |
| refrigerant | America
Dupont | Good refrigerant energy saving, environmental protection, refrigeration efficiency ratio is high, ozone loss index is 0 |
| Note: The above accessories are for reference only, due to equipment upgrades and other accessories brand changes without notice |
| Box composition structure |
| 3.1.Materials of the inner box | SUS304# stainless steel plate, 1.0mm thick |
| 3.2.Outer box material | External wall material: high quality cold rolled sheet 1.2mm thick, surface electrostatic spray paint. |
| 3.3.Box appearance | The front corners of the outer box are in the form of right angles, and there are no obvious defects in the polishing place. |
| 3.4.Insulation material | Rigid polyurethane rigid foam + glass fiber, thickness 100mm thick |
| 3.5.Composition of test chamber | Test area, freezing area, fan, electric heating, electric, controller |
| 3.6.Temperature and Humidity control | Electric heating, humidification, fan, evaporator, PT-100 sensor |
| 3.7.Door and observation window | Double door explosion-proof handle, anti-condensation electric heating device, vacuum automatic defogging transparent strip light observation window, size 230X270mm |
| 3.8.Sealing strip | Heat-resistant silicone seal |
| 3.9.Lead test | Open Φ100mm*2 test holes, and attach the corresponding thermal insulation accessories and special sealing soft plug *2PCS |
| 3.10.Sample rack | Sample indexing rack and sample placing tray are provided in the box, which can be adjusted at will. The standard configuration is 2 pieces, each bearing 10KG evenly distributed |
| 3.11.The container is moved | Moving casters and positioning foot cups are installed at the bottom of the box |
| 3.12.Total weight | about 200KG |
- Four, electrical control system: Taiwan Taitong large screen controller
|
4.1 Controller
4.2. Screen display function
4.3. Program capacity and control function | Setting range: Maximum temperature range upper and lower limit 5ºC
Display resolution: Temperature: 0.01ºC; Time: 0.1min;
Temperature and humidity measurement: PT100 platinum resistor
RS-232/R485 communication interface: can display curves, data acquisition, can be used as a monitoring and remote control system |
| 4.2.Picture display function | Temperature and humidity setting (SV) The actual (PV) value is directly displayed
Can display the execution program number, segment, remaining time and number of cycles, running time display
Program editing and graphical curve display
With a separate program editing screen, each page can input 4 segments of temperature and humidity, time
Point or program action status display
Language conversion can be switched between Chinese and English
Large screen 7 "true color display screen |
| 4.3.Program capacity and control functions | The number of programs that can be used: up to 120 groups,1 program can be combined by 1~99 segments, capacity: 1200 segments
Repeatable commands: Each command can be up to 999 times, and the temperature and humidity slope can be set by the time axis; Connection can be set between programs; The production of the program is simple in conversational operation; With editing, clearing, insert and other functions; Group time signal output control (can control the ON/OFF action of the object to be measured)
It has 9 groups of PID parameter setting, PID automatic calculation and FUZZY control functions
Program execution has the function of skip, hold, power off program memory, automatically start and continue to execute the program after the restart
Data acquisition, export, view graphics functions
The screen can be backlit, backlight time can be set, and the screen display protection function can be timed or manually turned off
Program COPY, COPY, connection function, edit experiment title and other program editing functions
With reservation start and shutdown, date, time adjustment function
Key and screen LOCK function
Standby picture function and abnormal processing picture description function |
| Refrigerating system |
5.1.compressor
5.1. Compressor
5.2. Evaporator
5.3. Oil separator
5.4. Filter dryer
5.5. Solenoid valve
5.6. Refrigerant
5.7. Condenser
5.8. Throttle expansion system | France Taikang power saving fully enclosed industrial low-temperature compressor
Finned tube heat exchange evaporator
The high temperature and high pressure refrigerant gas discharged from the compressor is separated from the frozen oil droplets and returned to the compressor rail cavity for compressor lubrication and cooling
Absorb the residual water and acid in the refrigerant of the refrigeration system, and filter out the solid impurity particles in the system, copper cutting, etc., to protect the normal operation of the expansion valve and capillary
Imported high quality, high stability solenoid valve
Environmental protection refrigerant R404a is used as the refrigeration medium of the refrigeration system
Adopt air-cooled, with cooling motor device
Freezing system for capillary capacity control |
5.9.Refrigeration system characteristics
| The whole system pipeline is ventilated and pressurized for 24 hours 22kg leak test.
Heating and cooling system is completely independent.
Equipped with the company's professional technical characteristics, anti-high temperature and high pressure, air flow cold boot damage system.
All refrigerating system action program is completely controlled by microcomputer controller.
There is a water tray at the bottom of the compressor, which can collect the condensation water generated by frost.
Compressor comes with PTC temperature sensor, when the compressor overtemperature, to achieve overtemperature protection.
Compressor comes with oil pressure protector to realize oil pressure protection of compressor.
High and low pressure protection device, monitor the pressure of the refrigerant during the working process of the equipment, once the refrigerant pressure is higher than the limit pressure of the system or lower than the minimum pressure set by the system, immediately send an alarm, and cut off the power supply until the fault is eliminated.
Refrigeration system all use imported brand accessories, reliable quality, to ensure the stability of the system. |
| ,Heating humidification and dehumidification system |
| 6.1.Heating tube | 6.1. Imported nickel-chromium alloy electric heater is used for heating heat pipe
6.3. Heating control mode contact-free periodic pulse width adjustment, SSR (solid state relay)
6.4. The humidifying barrel is die-cast with aluminum alloy, and is equipped with a water level observation window and a water level solenoid valve
6.5.Constant humidity and heat heating, dehumidification, humidification, dehumidification system is completely independent, intelligent automatic heating, humidification function, compressor start dehumidification and constant temperature, P.I.D control to achieve the required temperature and humidity
6.6. Water replenishment method Humidification water is recycled or not recycled, automatic water replenishment system, 25L internal drawer type water tank
|
6.2. Humidifying heating tube
6.3. Heating control mode
6.4. Humidifier bucket
6.5. Humidity and heat constant mode
6.6. Water Refill methods
6.7. Water supply mode | 6.2. Humidifying heat pipe titanium alloy heat pipe |
| 6.3. Heating control mode | Contactless constant period pulse width modulation,SSR(solid State relay) |
| 6.4.Humidifier bucket | Aluminum alloy die-casting molding, with water level observation window and water level solenoid valve plus wet mode |
| 6.5.Humidity and heat constant mode | Heating, dehumidification, humidification, dehumidification system is completely independent, intelligent automatic heating, humidification function, compressor start dehumidification and constant temperature,P.I.D control to achieve the required temperature and humidity |
| 6.6.Water Refill methods | Humidifying water is recycled or not recycled, automatic water refill system,25L internal drawer type water tank |
| 6.7.Water supply mode | 6.7 Water Supply Mode The water pump is lifted |
| Air circulation system |
| 7.1 When the test sample is placed in the test space, it is necessary to ensure the uniformity of the sample surface temperature and humidity, and the air flow in the test space must be forced to cycle. The equipment has built-in air room, circulating air duct and stainless steel circulating fan. Through the top back blade window and diffuser, the wind is evenly blown out from the top, and the temperature and humidity in the mixing chamber are distributed to the test space, so as to achieve the purpose of uniform control of temperature and humidity |
| 7.2. Adopt multi-wing discrete fan and sealed motor, not easy to lose oil and bundle center |
| 7.3. Diffusion recirculation, horizontal exchange, arc circulation air supply mode |
| 7.4. Adjustable side blowing outlet and protection screen recovery port |
| 7.5. Specially customized adjustable louver air supply circulation system |
| Safety protection system |
| 8.1.With no fuse protection switch |
| 8.2.Refrigeration system: compressor overheating, overcurrent, overpressure, condensation fan overheating protection |
| 8.3.Test chamber: limit overtemperature, fan, motor overheat relay protection |
| 8.4Humidification system: humidification hot pipe dry burning, abnormal water supply, abnormal drainage, abnormal water shortage protection |
| 8.5.Power supply: leakage protection, overload and short circuit protection |
| 8.6.Temperature and humidity over zero point thyristor power controller protection |
| Equipment working environment |
1. Ambient temperature: 0 ~ 35ºC
2. Ambient humidity: 20%-90%RH, non-condensing
3. Equipment noise: ≤69db measured at 1 meter from the machine and 1.2 meters from the ground directly in front of the machine |
| Equipment use requirements |
| 10.1.Use site | Ground level, good ventilation, free of flammable, explosive, corrosive gases and dust; There are no sources of strong electromagnetic radiation nearby
A:No less than400mm
B:No less than400mm
C:No less than1000mm |
| 10.2.Ground bearing capacity of the site | Not less than 200kg/m2; Proper maintenance space should be left around the equipment, and drainage problems of the equipment should be properly considered when using the site |
| 10.3.Equipment electricity | AC 220V±10%,50Hz±1Hz, independent configuration of the corresponding capacity of the air or power switch, equipment wiring length of about 2 meters |
| 10.4.Equipment power | 5KW, maximum current :16A |
| 10.5.Equipment water | Resistivity ≥500Ω·m |
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