RT-304A Walk-in Constant Temperature and Humidity Test Chamber
RT-304A Walk-in Constant Temperature and Humidity Test Chamber
Walk-in constant temperature and humidity test room is specially suitable for whole machine and large parts to do low temperature test, high temperature test, high and low temperature change test, constant temperature and humidity test, high temperature and low temperature test with humidity change test and so on.
Product Details：
Equipment description：
Walk-in constant temperature and humidity test room is specially suitable for whole machine and large parts to do low temperature test, high temperature test, high and low temperature change test, constant temperature and humidity test, high temperature and low temperature test with humidity change test and so on.To provide a large temperature and humidity test room for testing big size parts, semi-finished product and finished product, at the same time, also be applied in testing large quantity or big size equipment, such as computer terminal, auto parts, etc.The test room is mainly consist of control panel, distributor, moisturizing base plate blower, heater, humidifier, refrigerating unit.We also can custom the size chamber size and function, according to customers’ standard and requirement.Block type appearance,beautiful shape,scientific design,can meet customers’ different requirement.
Following below standards：
1.GB/T2423.1-2008 《Electric and electronic product environment testing 2nd part: test methods-test a low temperature 》
2.GB/T2423.2-2008 《Electric and electronic product environment testing 2nd part: test methods-test b: high temperature 》
3.GB/T2423.3-2006 《Testing 2nd part for electric and electronic products test methods-test Cab: damp heat, steady state testing 》
4.GB/T2423.4-2008 《Electric and electronic product environment testing 2nd part: test methods-test Db alternating hot and humid (12h+12h cycle 》
5.GB10589-2008 《Specification for low temperature test chambers 》
6.GB11158-2008 《Specification for high temperature test chambers 》
7.GB10586-2006 《Specification for damp heat test chambers 》
8.GJB150.3-1986 《High temperature test》
9.GJB150.4-1986 《Low temperature test》
10.GJB150.9-1986 《Damp heat temperature test》
(Heat capacity of load is not more than 20kg/m3 per cubic metre steel, hot and humid test without under heat load)
Application：
It suitable for the national defence industry, aerospace industry, automatic parts, auto parts, electric part, plastic and rubber, chemical engineering, medicine industry, institutions to do the heating resistant and cold resistant.
Technical parameter：
| Model | RT-304A Walk in temperature humidity test chamber |
| Size(cm) | The design of space dimension following customers’ need. |
| Temperature range | -40℃~80℃ |
| Humidity range | 20%~95%R.H.（Please kindly check temperature and humidity control chart） |
| Temperature analytical precision | ±0.1℃；±0.1%R.H./±1.5℃；±5.0%R.H. |
| Temperature controlled precision | ±1.0℃；±2.0%R.H./±0.5℃；±3.0%R.H. |
| Heating time | Average heating time is 1.5-2°/min，No linear requirement（No-load condition） |
| Cooling time | About 0.7℃~1.0℃/min，No linear requirement（No-load condition） |
| The material of inner and outside | The outer case with the treatment of color plate stoving varnishing |
| Insulation material | High temperature and high density resistant chlorine ethyl formate vinegar foam insulative material |
| Cooling system | Water cooling/ Double phase compressor |
| Protecting device | No-fuse switch、Compressor overloading protective switch、Refrigerant high-low pressure protective switch 、Over humidity and temperature protective switch、fuse、fault warning system |
| Accessories | Record(Option)、View window、50mm instrument connection、the light in cabinet、Clapboard、Dry and wet gauze ball |
| Controller | Korean“TEMI” or Japanese“OYO”option |
| Compressor | France’s “Tecumseh” Brand |
| Power supply | 1Φ 220VAC±10% 50/60Hz & 3Φ 380VAC±10% 50/60Hz |
| Model | RT-304 walk-in constant temperature and humidity test chamber |
| Inner size(mm) | W1000*H1000*D2000mm( can be specified) |
| Working environmental temperature | 1.Environmental temperature of equipment is 5～35℃, relative humidity ≤85%RH 2.Cycling cooling water temperature of water tower≤30℃, cycle cooling water supply 0.25～0.4MPa |
| Temperature range | A、The limit temperature range of machine：-35℃～+115℃ B、The operating temperature range of machine：-30℃～+110℃ |
| Humidity range | 40%~98%R.H.（20% humidity corresponds to temperature ranges refer to the attached pages for the curve） |
| Temperature departure | ≤±2.0℃ |
| Temperature fluctuation | ≤±0.5℃ |
| Relative humidity fluctuation | 1.≤ ±3.0%RH（humidity > 75%RH） 2.≤ ±5.0%RH（humidity ≤ 75%RH） |
| Heating time | 1.5℃/ min on average, no linear demand (Under no load situation) |
| Cooling time | About 1.0℃/min, no linear demand (Under no load situation) |
| Interior material | SUS304Mirror stainless steel plate |
| External material | Assemble cold storage board：colored steel plate with plastic spraying and galvanized,thermal resistance stress material |
| Insulation material | High temperature resistance, high density, Chlorine ethyl formate vinegar foam insulation material |
| Weight capacity | Floor of test room can be able to load 200kg/m2 (uniform load) |
| Cooling system | Water cooling type/ two-stage compressor |
| Protective device | 1. Overtemperature protection 2. Overtemperature protection for humidifying barrel 3. Overload protection for water pump 4. No.1 Compressor protection 5. No.2 Compressor protection 6. Refrigerant high voltage protection |
| Standard Parts and Accessories | 1.Laboratory light：Damp-proof light 80W/220V，4 pieces (two for standard feature, two for replacement) 2.Test hole：φ50mm (1) (Can custom the diameter and number of test hole) 3.Wet and dry bulb gauze：5 piece |
| Controller | “TEMI”Color Touch Screen made in Korea |
| Door of test room | 1.Double point hinges door, with lock function 2.Glass observation window, with electric heating anti-condensation (visible range more than 500mm*400mm) 3.Door frame with anti-condensation device 4.Equipped with key for door, can lock the door during high temperature test, avoiding accident to hurt staff. |
| Control panel | 1.Temperature(humidity)control display 2.Control the lamp 3.Overtemperature protection device on side 4.Emergency stop switch, running light, fault indicating light,alarm |
| Heater | 1.Nickel chromium alloy heating wire type heating tube 2.Heater control mode：Non-contact cycle pulse width adjustment, SSR( solid state replay) |
| Humidifier | 1.The humiditying method of humidifier 2.The control method of heater：Non-contact cycle pulse width adjustment, SSR( solid state replay) 3.Water level control device, prevent dry heating device for heater 4.Physical principles for humidifying electric heating tube：Apply electric heating tube heating to produce steam, then the steam into the climate chamber humidifying the air. |
| Compressor | “BIZER” made in Germany |
| Refrigeration principle | Steam compress type refrigeration： Its principle is to use freon in the latent heat of evaporation of a liquid from cooling objects, such as heat and refrigeration. The expansion valve into the evaporator liquid, absorbing latent heat of evaporation and evaporation from the surrounding objects, evaporate into low temperature and low pressure gas refrigeration compressor suction, compressed by compressor into a high temperature and high pressure gas into the water cooled or air cooled condenser, which cools into a high-pressure liquid, then through the expansion valve into the evaporator. Repeat cycle, heat from the low temperature refrigeration and heat released from the high temperature. |
| Cooling type | Water cooling type：water recycle cooling 15m3/h |
| Control type of cooling machine | 1.PLC for control system (Programmable),according to the testing condition, automatically adjust the refrigerator to run. 2.Condensing pressure regulating valve(cooling adjusting device) 3.Evaporating pressure regulating valve (to prevent the evaporator freezing) 4.compressor air cooling circuit 5.Energy loop |
| Refrigerating fluid | R404A（Ozone depletion index is 0 ） |
Graph of temperature and humidity control
VIII.Accessories Configuration and Functions list
| System Name | System function description | Accessory Name | Accessory function description | Picture |
| Cooling system | Using the Germany “BITZER” or France, “Taikang” brand of dense high-efficiency compressor,independent research and develop condenser and evaporator. Adding the United States environmentally-friendly refrigerant R404,Freezing refrigeration engineer with more than 10 years experience guided the job; the system is reached the instrument low temperature characteristics, providing reliable guarantee for product features. | Compressor unit | Original “Germany BITZER” or “France Taikang” high efficiency compressors,Compressor is the heart of the cooling system, which plays a role of compression, and conveyer refrigerant vapor. | |
| Filter | 。Filter is used of a porous filter media, trapping the solid particles in the mixture of solid particles and liquid, to implement solid-liquid separation equipment. | |||
| Evaporator | Heat exchange: low temperature and low pressure of the refrigerant inside the heat absorption and evaporation, which will test space to carry away the heat for cooling purposes.HZ developed the production of low temperature and low humidity testing plays an irreplaceable role; it lead heat exchange taking the heat to achieve temperature and humidity characteristics play an important role
| |||
| Capillary tube | Copper pipe: flow, throttle up, blood pressure in the refrigeration system | |||
| Expansion valve | Flow regulation wide range, pre-setting the regulating law actions, to get a great degree of superheat control quality, making the starting characteristics of the refrigeration unit and load dynamic characteristics significantly improved.High efficiency, stable operation, low power consumption, good temperature control precision | |||
| Refrigerant | United States environmental protection refrigerant R-404: used to transfer heat, freezing of the working fluid. | |||
| Oil content | Separating the refrigerant and oil, the oil return of the compressor, recycling, energy saving and high efficiency. | |||
| Liquid storage bottle | Refrigerant storage, liquid-vapor separation and protect the compressor from liquid strike, filter impurities, reducing noise and oil return and so on.The accumulator installed in the system after the condenser, storage of high pressure liquid, ensure that the refrigeration system in the cold refrigerant liquid quantity adjustment when the load changes needed, but also to reduce the number of preventive maintenance to the system to add refrigerant. | |||
| Heat exchanger | At a certain structure and under certain conditions of heat exchange equipment. Which can make two kinds of fluids Exchange heat with temperature device. | |||
| Water-cooled condensers | Tubular cooler heat medium is taken over by the on the imports of cylinder , after each passage in order, twists and turns to flow to take over exports.And cooling medium taking the double pipe flows, namely cooling medium by water into the cooler half of the intake after pipe, then flows from the water cover and the other half pipe into the water on the other side of the cooler covers and outlet hose.Cold medium in double tube side flow, absorbing waste heat released by the outlet of heat coming out of the media, keeping the working media rated operating temperature. | |||
| Automatic voltage control ((Danfoss) | Used to control the compressor overload braking protection device. | |||
| Solenoid valve (Japan Saginomiya) | A normally closed pilot valve for the liquid refrigerant. | |||
| Pressure controller (Danfoss) | Pressure controller can be used in a neutral or corrosive gas and liquid media | |||
| Heating system | For lifting space temperature | Nickel-chrome heater | Nickel-chromium material because of its high strength, high temperature, low temperature, heat, plasticity， | |
| Solid State Relay (Taiwan Yangming) | By microelectronic circuits, discrete electronic devices, power electronic power devices consisting of non-contact switch. With isolation devices to achieve the control terminal and the load side. | |||
| Air circulation system | Unique space air circulation system, to avoid the circulation of the air flow generated in the blind spot area test, high and low temperature of the chamber to improve the accuracy, uniformity. | Circulating air duct | Working mainly for the exchange of indoor air by air inlet, cycle motors, impeller, outlet components. | |
| Mitsukoshi axis motor | Structure is extremely simple and robust, high-speed performance, Long life, easy maintenance and low noise, due to the absence of a series of problems caused by the brush, so this motor has great application in the control system | |||
| Motor wind wheel | To drive the air flow. | |||
| Pneumatic electronic valve | For high temperature, low temperature zone, the test area switch damper. | |||
| Control Systems | Temperature and humidity control, display systems | Microcomputer controller | Temperature measurement range: -90.00 ℃ ~ 200.00 ℃ (Resolution: 0.01 ℃, error ± 0.2 ℃); 7.2-inch TFT color touch screen; (setpoint / programming) two control methods; the Chinese and English text menu prompts; PID control output;; PT100 sensor (4-20mA) analog outputs； | |
| Sensor: is the core part of the temperature and humidity test equipment | PT100 temperature sensor, humidity sensor | Acquisition temperature range : -40 ℃ ~ + 150 ℃, display accuracy 0.1 ℃; Overall accuracy 0.3 ℃ | ||
| Control Systems | Circuit control system | High-quality, science with the circuit control system ensures stable and reliable instrument, energy efficient high-quality characteristics | AC contactor: Schneider Off protection: compressor, heater | |
| Thermal relay: Schneider Compressor overcurrent overheat protection | ||||
| AC contactor: Schneider Off protection: Humidifier | ||||
| Power switch: ABB The total power-off control instrument | ||||
| Button switch: Schneider Controllers, lighting power control | ||||
| Wire and cable: Gold LENOO | ||||
| Wiring row: Japan IDEC Connection Ports | ||||
| Number of tubes | ||||
| Security protection | Run perfect safety protection devices to ensure safer and more reliable products； | To protect the compressor | Compressor voltage protection | Danfoss pressure protection switch |
| Compressor overcurrent, overtemperature protection | Schneider thermal relay | |||
| Protection heater | Fuse | Chint Fuse: 2 groups | ||
| Protection circuit | Fuse | Line fuse: Group 1 | ||
| Phase sequence protection | Phase failure, phase reversal, phase unbalance when the protective effect | |||
| Protection equipment the whole | Instrument protocol temperature limit overtemperature protection | Setting operating temperature limit controller input, equivalent alarm, limit controller input and output (stopped), beeps, the controller interface pop overtemperature alarm, leaving only the controller, lighting, power supply and cut off all the rest。 | ||
| Protection of the test product | Test area overtemperature protection | Stand-alone device, the temperature controller to control the temperature of the test area. | ||
| Shaped Frame | Inside and outside the room beautiful and durable material and designed to function with assurance is achieved | Studio | Mirror SUS304 stainless steel, material thickness guaranteed without distortion, leakage, mirror SUS304 stainless steel also has a corrosion-resistant, easy to clean features. | |
| Carton | Library board static high temperature baking production; National Laboratory Instruments standard colors, beautiful; high temperature resistance, abrasion. | |||
| cardboard | Using high and low temperature heat sealing strip, ensure the sealing performance. | |||
| Door handles | Using box integrated handle, ensure the sealing performance. | |||
| Test Stands | Using box integrated handle, ensure the sealing performance. | |||
| Control Panel | Affinity simple control panel allows customers to instrument operation no strangeness, to better reflect the characteristics of the instrument easy to use. | Controller | Installed in the upper right corner of the machine, according to ergonomic height settings, where you can enter the test conditions, the controller pro and real-time display interface: Set the temperature, humidity, time, number of cycles, procedures, curve, also shows the actual real-time surveillance measured temperature, humidity, time curve. | |
| Power button switch | Red: Schneider with a self-locking switch button, run the power for instrument startup, shutdown, red illuminated. | |||
| Over-temperature protection | Test area overtemperature protection, real-time display of test zone temperature, the temperature exceeds the upper limit of sound and light alarm and cut off power to the instrument. | |||
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