| 1. Item 2. Model | Constant Temperature and humidity test chamber 408L |
| 3. Function | It simulates the products in the chamber where the climate condition of different temperature and humidity, such as high-low operation and storage, temperature cycling, high-low temperature and high-low humidity, moisture condensation etc. to check its adaptability and changing performance. It’s required to conform to international regulation (IEC, JIS, GB, MIL…) to reach the consistency (including test schedule, condition, method) under the international standard. |
| 4. Sample application | The chamber applies to: compatibility test for store, transportation and application of electric, electronic products, unit components, parts and other materials under high or low temperature. The following samples are prohibited to be tested and stored: - Inflammable , explosive and other volatile substances; - Corrosive substance; - Biont; - Strong electromagnetic emission source. |
| 5. Volume, size & weight |
| 5.1. Volume 5.2. Internal size 5.3. Exterior size 5.4. Weight | 408L W600*H850*L800mm W1080 x H1300 x D1750mm 400KG |
| 6. Performance |
| 6.1. Test condition | Temperature:+25℃, Humidity: ≤85%, no samples in the chamber |
| 6.2. Test method | GB/T 5170.2-1996 Temperature test chamber GB/T5170.5-1996 Temperature and humidity test chamber (only temperature and humidity) |
| 6.3. Temperature range | -40℃→+150℃ (adjustable) |
| 6.4. Temperature fluctuation | ±0.5℃ |
| 6.5. Temperature accuracy distribution | ±2.0℃ |
| 6.6. Humidity range | 20%～98%R.H (temperature at 20℃-85℃) |
| 6.7. Humid. fluctuation | ±2.5%R.H. |
| 6.8. Humidity accuracy distribution | ±3.0%. |
| 6.9. Heat-up time | -40℃ → +150℃ Heat up for 2-4.0℃/min |
| 6.10. Cooling time | +150℃→ -40℃ Cooling for 0.7-1.0℃/min |
| 6.11. Load condition | Testing space is not more than 3/4 of the total space, no heating |
| 6.12. Sample holder | Stainless steel punching stencil |
| 6.13. Relative humidity and temperature control range (refer to fig.) | 
|
| 6.14. Meet the technical standards | GB/T 2423.1-2001 Test A: Low temperature test method GB/T 2423.2-2001 Test B: High temperature test method GJB 150.3-1986 High temperature test GJB 150.4-1986 Low temperature test IEC68-2-1 Test A: Cold IEC68-2-2 Test B: Dry heat GB11158 “Technical Conditions for High Temperature Test Chamber ” GB10586-1 “Technical conditions for Damp heat test chamber ” GB/T 2423.2 “Basic environmental testing procedures for electric and electronic products B: High temperature test method”. GB/T 2423.3 “Basic environmental testing procedures for electric and electronic products Ca: Constant damp heat testing method” etc. |
| 7. Structure characteristics. |
| 7.1. Insulated enclosure structure 
| External material: SUS304 or stoving varnish Inwall material: SUS304 Insulation material of box body: flame retardant fire rigid polyurethane foam Door thermal insulation material: flame retardant fire rigid polyurethane foam |
| 7.2. Air conditioning channel | Centrifugal fan: Heater, evaporimeter, outfall, temperature sensor |
| 7.3. Test chamber standard | Window 330x450x40mm 3 vacuum layers Anti-explosion handle Door hinge: SUS #304 Lamps in the chamber: 11W Access port: φ50mm or φ100mm 1pc or more. |
| 7.4. Door | Single door, open from left, handle is at right; With viewing window: W300xH450mm, lamp window/condensation prevention thermal device |
| 7.5. Controller | Control screen, overtemperature protection setting |
| 7.6. machine room | Refrigeration units , water pans , outfall |
| 7.7. control cabinet for power distribution | Switchboard fan, ventilator |
| 7.8. Heater | Heating system: cycling heating from finned-tube Stainless steel electric heater |
| 7.9. Humidifier | Oven humidification system, cycling winding system |
| 7.10. Power line hole and outfall position | located at the back of chamber |
| 8. Cooling system (Binary cascade refrigeration) |
| 8.1. Cooling compressor | Tecumseh (France) 
|
| 8.3. Evaporator | 
fins-tube evaporator |
| 8.4. Condensator | Air-coolled tube-type condensator 
|
| 8.5 Expansion system | Refrigeration system of volume control (capillary) |
| 8.6 Evaporative condenser | Stainless steel brazing plate-type heat exchanger 
|
| 8.7 Chiller control | Operation of cooling machine can be adjusted automatically by control system according to the test condition evaporating pressure adjustable valve Cooling loop of compressor |
| 8.8 Freezing medium | 
R404a (Eco-friendly, Ozone loss rate at 0) |
| 9 Controller | 
Independent R&D software (Taiwan) |
| 9.1 Temperature and Humidity controller | Imported 7.0 inch LCD touch screen control, programmable of temperature and humidity; 100 groups of program and 1000 groups of memory, each for 99hrs 59min and can be set as required with groups of PID control function. |
| 9.2 Controller specifications | Precision: Temp. ±0.1℃＋1digi, humid.: ±1%R.H＋1digit Distinguishability: Temp.: ±0.01℃, humid.:±0.1%R.H. slope temperature; 0.1～9.9 adjustable. With warning function and up& down limitation standby 9 groups of PID control parameters and PID auto-calculation. Dry and damp ball with auto correction. |
| 9.3 Function of page display, program volume and control function | - Touch screen operation, no need to input by key pressing; - Temp. and Humid. Set (SV) with true (PV) value shown. - Display of current program No., phase, time left and cycling times. - Run the operation of accumulative time. - Program set value of Temp.& humid. shown as curve; - At least 5 phase of temp. & humid, time can be input on the sole program editing page. - Language can be switched between English and Chinese; - Fault page shown; - Back light adjustable of screen; - Protection function can be set by time, TIMER can be turn off by manual; - Program groups available: 100 max. PATTEN. - Memory volume available: 1000 SEGMENTS. - Repeat executive command: up to 90 times for each command. - Program with editing, cancel and insert available; - Time set of SEGMENTS: 0～90Hour59Min; - Module device controlled by program; - Electricity cut memory, with auto start-up and executive program function after switch on; - program execution with display of curve diagram; - With auto adjustable freeze function; - Reservation of start-up and turn-off available; - Data and time adjustable; - Key-pressing and page lock (LOCK) available. |
| 10 Safety protection device |
| a) Cooling system | - compressor overheated - compressor overflowed - compressor overpressed - condensate fan overheated - oil pressure protection of compressor |
| b) Test chamber | Adjustable overheat Air conditioning channel overtemperature limit Wind motor overheated |
| c) Other | - phase sequence and open phase protection of main power supply - leakage protection - heating, humidification and Dry burning-resistant protection - overload and short circuit protection - overtemperature outage protection |
| 11 Other equipped parts |
| a) power control contactor of sample testing | Contactor of relay control: within AC220V, 2A (contactor closed under normal running, when chamber stops or of malfunction, contactor open). |
| b) leakage breaker of main power supply | AC220V, 50Hz＋Grounding wire. |
| 12 Accessories |
| a) Power (Standard) | Five core single-phase three-wire and 1piece of protection grounding wire (optional) |
| b) Access port | φ50mm, φ80mm, φ100mm, φ120mm available according to your requirement and cab be customized on the premise that not affect the machine performance. |
| c) USB interface (Standard) | All the history curve and history data can be downloaded from controller as Excel or JPG according to date.
|
| d) Remote Control System (optional) | 
|
| 13 Transportation | The chamber as a unitary to be transported |
| a) Delivery size b) Weight | Max. size (package not included): refer to “exterior size” Max. delivery weight (package not included): refer to “Weight” |
| 14 Usage requirements | Assured by users as below requirements |
| 14.1 Installation position | - With leveling ground and good ventilation; - No strong shock near the chamber; - No strong electromagnetic field near the chamber - No inflammable , explosive , corrosive material and dust - Surrounding size for chamber operation and maintenance: 
A: not less than 10cm
B: not less than 60cm C: not less than 60cm D: 225 type: not less than 80cm 408 type: not less than 90cm 1000 type: not less than 120cm |
| 14.2 Condition | Temperature: 5℃～30℃ Humidity: ≤85% Air pressure: 86kPa～106kPa |
| 14.3 Tap water: only for damp heating equipment with pure water machine | Water flow ≥200kg/h, pressure: 0.1Mpa ~ 0.25Mpa. Tap water conforms to GB 5749-1985 drinking water standard; Remark: equipped with DN15 male adapter of pure water machine |
| 14.4 Power supply condition Total power Max. current Voltage | - AC220V + Protection grounding - Voltage fluctuation range: AC(220±10%) V - Frequency fluctuation range: (50±0.5)Hz - Resistance of protection grounding wire less than 4Ω. - It’s required to equipped with air or motive switch of corresponding capacities, which is also used only for the chamber 8.5KW 13A 380V |
