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| Brand Name: | Sinuo |
| Model Number: | SN886-19m³ |
| MOQ: | 1 |
| Price: | Customized |
| Payment Terms: | T/T |
| Supply Ability: | 10 sets/month |
19m³ Walk In High Low Temperature Humidity Environmental Test Chamber
Complied Standards & Clauses for 19m³ Walk In High Low Temperature Humidity Environmental Test Chamber
IEC60068-2-1:2007 “Environmental Testing-Part 2-1: Tests-Test A: Cold, IDT”
IEC60068-2-2:2007 “Environmental Testing-Part 2-1: Tests- Test B-Dry heat, IDT”
IEC60068-2-30:2005 “Environmental Testing-Part 2-30: Tests-Test Db: Damp heat, cyclic (12h+12h cycle) , IDT”
IEC60068-2-78:2012 “Environmental Testing-Part 2-78: Tests-Test Cab: Damp heat, steady state, IDT”
Technical Parameters for 19m³ Walk In High Low Temperature Humidity Environmental Test Chamber
| 1.Product name | Walk-in Constant Temperature and Humidity Test Chamber |
| Mode | SN886-19m³ |
| 2.Applicable instructions | |
| 2.1. Applicable range | This equipment is suitable for environmental simulation reliability tests of various electrical and electronic products and other products, parts and materials, such as constant high and low temperature, gradual change, and cycle tests. |
| 2.2. Safety test restrictions |
A) Test and storage of samples of flammable, explosive and volatile substances B) Test of corrosive substance samples,test and storage of biological samples C) Test and storage of strong electromagnetic emission source samples |
| 3.Volume and size | |
| 3.1. Effective volume | 19m³ |
| 3.2. Inner box size | W2500 mm*H2200 mm*D3500mm |
| 3.3. Outer box size |
About W3100 mm*H3700 mm*D2400 mm(Excluding unit size) Reminder: Please refer to the final design and confirm the three views for the external dimensions |
| 4.Performance | |
| 4.1. Cooling method | Water cooling |
| 4.2. Temperature range | -40°～ 60℃ |
| 4.3. Humidity range |
Standard range: 20%-95%RH Low humidity range: 5%RH~95%RH (with dry air) |
| 4.4. Temperature /humidity fluctuation | ±2℃ / ±2.0%RH |
| 4.5. Temperature resolution accuracy | 0.01℃ |
| 4.6. Humidity resolution accuracy | 0.01RH |
| 4.7. Temperature uniformity | ≤2℃ |
| 4.8. Humidity uniformity | < 75%RH:±3%RH；>75%RH±5%RH |
| 4.9. Heating time | RT～90℃≤90min |
| 4.10. Cooling time | RT～-40℃≤130min |
| 4.11. Temperature rise and fall overshoot | ≤±1℃ |
| 4.12. Load situation | 4KW(Heat of sample) |
| 4.14. Test standards |
GB-2423.1-2008 (IEC68-2-1) Test A: Low temperature test method. GB-2423.2-2008 (IEC68-2-2) Test B: High temperature test method. GB2423.3-2008 (IEC68-2-3) Test Ca: Constant damp heat test method. GB2423.4-2008 (IEC68-2-30) Test Db: Alternating damp heat test method. GB 11158 "Technical Conditions of High Temperature Test Chamber" GB10586-1 "Technical Conditions of Humidity and Heat Test Chamber" |
| 4.15. Schematic diagram of temperature and humidity |
PS: Standard humidity 20%~95%HR
|
| 5.Structure and material | |
| 5.1 Outer box material | Adopt advanced cold and hot steel plate non-static nano-baking paint |
| 5.2. Inner box material | SUS304 stainless steel plate |
| 5.3. Thermal insulation materials | High temperature and fire-resistant rigid polyurethane foam |
| 5.4. Door frame sealing strip | Silicone rubber sealing strip |
| 5.5. Box door | Double-leaf doors open outside, the door frame and the edge of the door panel are equipped with electric heating devices and overflow ditch |
| 5.6. Electric heating glass observation window |
Quantity: 2 Location: On the door of the test room (or the place designated by the customer) Form: 3-layer vacuum strengthened glass with built-in anti-fogging heating element |
| 5.7. Lighting | High and low temperature resistant explosion-proof energy-saving lamp |
| 5.8. Pressure balance port | All aluminum alloy with anti-sweat line 4 sets of self-resetting pressure windows |
| 5.9. Weight bearing | Laboratory load: 1000KG |
| 5.10. Sample hole |
A hole with a diameter of φ100mm on the left side chamber wall and equipped with a rubber isolation plug and a rubber cover at the same time.
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| 5.11. Non-slip floor |
The floor adopts a 4.0mm stainless steel non-slip design to prevent personnel from being injured during internal operations.
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| 5.12 Drainage |
The floor is designed with a drainage tank, and the test chamber has no water inside after the end of high temperature and humidity
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| 5.13 Foot cup |
The foot cup of the electric box adopts silica gel pad to absorb shock and protect the compressor and copper pipe welding
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| 5.15. Noise of the whole machine | ≦80dB |
| 6.Air conditioning system | |
| 6.1. Constant temperature method | Adopt cold balance method |
| 6.2. Working principle of energy saving |
Conventional constant humidity method: When the actual temperature reaches the set temperature, the compressor's cooling capacity remains unchanged, and the heating method is used to offset the compressor's cooling capacity to achieve temperature balance in the box. Cold balance method: When the actual temperature reaches the set value, the cold solenoid valve output is controlled by the controller PID, and the temperature in the box is balanced through the controlled cooling output. Compared with the conventional constant humidity method, the heating output is reduced to make the whole unit Compared with the conventional method, the equipment can achieve 40% energy saving |
| 6.3. Air cooling method | Cascade compressor refrigeration |
| 6.4. Circulating motor | Taiwan Tatung Low Voltage Induction Motor |
| 6.5. Sensor |
With humidity measurement sensor and controller PT100 platinum resistance sensor |
| 6.6. Wind wheel | Multi-wing centrifugal circulating fan, high and low temperature resistant aluminum alloy blade |
| 7.Refrigerating system | |
| 7.1. Cooling method | Original imported cascade silent type, high efficiency and energy saving compressor |
| 7.2. Compressor |
Original imported German Bitzer semi-hermetic compressor.
|
| 7.3. Refrigerant |
Non-fluorine environmental protection HFC404A (Honeywell) and DuPont R23 refrigerant
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| 7.4. Condenser |
High-efficiency shell and tube type (water cooling)
Equipped with cooling water tower (well-known brand) and pipeline
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| 7.5. Evaporator |
High-efficiency multi-section fin evaporator with hydrophilic membrane (thickened fin)
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| 7.6. Oil separator |
Emerson AW |
| 7.7. Expansion valve |
Danfoss Thermal Expansion Valve
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| 7.8. Solenoid valve |
Japan Saginomiya and Danfoss
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| 7.9. Other accessories |
All high-quality products of the first international brand (pictured on the right: filter drier) |
| 7.10. Dehumidification |
Freezing and dehumidifying by the refrigeration system (the air in the box passes through the evaporator below the dew point temperature, and water is precipitated).
*Choose evaporator fins with hydrophilic membrane treatment, better dehumidification performance, because the water tension of the hydrophilic membrane aluminum fins is small, the water droplets from air condensation are easy to slip off, and it is not easy to produce obstructive water bridges in the fin gap. Thereby greatly improving the dehumidification efficiency! |
| 8. Heating and humidification system | |
| 8.1. Heating method | Electric heating |
| 8.2. Steam supply method | Open direct injection, the inside of the generator is directly connected to the test chamber, keeping the internal pressure close to zero |
| 8.3. Heating tube |
Stainless steel finned nickel-chromium alloy electric heating tube, heating tube anti-MC adhesion design, heater connection, heat-resistant wire is used, the heater is placed in the circulating air duct on the top of the box, and fire-resistant and heat-insulating materials are added around it
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| 8.4. Humidification tube |
A) The humidification cylinder (boiler method) is used for humidification, which is faster than the traditional surface humidification (water pan type) and has higher control accuracy. In the box It will not produce impurity pollution such as scale, has good low-humidity performance, and is easy to clean. B) The humidification tube adopts all stainless-steel seamless casing, the insulation resistance is greater than 50MΩ, and has a dry-burn prevention controller C) The humidification cylinder is made of stainless steel and has a water level observation window. D) Low temperature with dry air
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| 8.5. Control method |
Non-contact control the output signal of the controller achieves high precision through SSR solid state relay Non-contact switch control |
| 8.6. Humidification boiler | Installed inside the machine room |
| 8.7. Humidification water treatment | Equipped with a dedicated water softening device, which can effectively remove impurities in the water (1 set of pure water recovery system device, with activated carbon filter to filter water impurities). |
| 9.Control system | |
| 9.1. Controller | The controller has Chinese display, self-diagnosis function, prompts the cause of failure and treatment method, and records test data and process |
| 9.2. Dialogue interface | Industrial control architecture touch screen LCD color display, Chinese menu dialogue mode |
| 9.3. Setting accuracy | Temperature 0.1℃, time 0.1 minutes, humidity 1%RH |
| 9.4. Temperature input | High-precision sensor |
| 9.5. Humidity input | High-precision electrostatic capacitance humidity sensor |
| 9.6. Control method | PID control |
| 9.7. Operation mode | Program operation mode, constant operation mode, regular startup operation |
| 9.8. System capacity | 1000 groups of programs*100 segments per group (1000 times can be cycled separately), the number of segments required by each group of programs can be divided arbitrarily, and each group of programs can be freely linked to each other |
| 9.9. Test data display | Set temperature, measured temperature, total operating time, segment operating time, segment remaining time, heating status, calendar time, etc. |
| 9.10. Built-in PLC function | It can directly drive each execution part, and the logic operation is completed by PLC software |
| 9.11. Automatic selection of refrigerator working conditions | According to different test conditions, automatically select the working state of the refrigerator |
| 9.12. Communication interface | Equipped with RS485 interface, it can be connected to an external computer for remote temperature control, and it has a computer remote diagnosis function. It can adjust and monitor the operation of the equipment, programs, instructions, and software through the Inter network. |
| 10. The main components of the control circuit |
The main components of the control circuit are all high-quality brands
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| 11. Safety protection function |
1. Test product over-temperature protection (independent) 2. With no fuse protection switch 3. Heater over-temperature protection switch 4. The compressor is overloaded and overheated 5. Compressor high- and low- pressure protection 6. System over-current protection device 7. The controller self-diagnoses the fault and displays it 8. Cooling water pressure is too low protection 9. Leakage protection, short circuit protection, wrong phase / phase loss protection, fan overload protection, independent over temperature protection, water shortage protection, water cut protection, operation indication, sound and light alarm, automatic power off after alarm, etc. |
| 12. Conditions of use |
1. Ambient temperature: -5℃~+28℃; 2. Relative humidity: ≤85%RH; 3. Atmospheric pressure: 80kPa~106kPa 4. No strong vibration around 5. Equipment power supply: (note that the test power supply is not included) 5.1 Connect to power supply 380V AC (±10%), three-phase wire + protective ground wire, grounding resistance ≤ 4Ω; 5.2 Total power: about 100KW 5.3 Maximum working current: about 152A |
Equipment Overview
Applications: This constant temprature and humidity test chamber is suitable for high and low temperature and damp heat tests of electrical, electronic, mechanical, large parts, semi-finished products and finished products. Test the process quality and reliability of products, parts, and more under simulated temperature and humidity conditions.
Test Principle: The heating, humidification and refrigeration system is used to control and change the ambient temperature and humidity in the chamber, simulating the ambient temperature / humidity and alternating procedures required by the testing.
Structure: Adopts closed chamber structure.
Picture for Reference
