Product Details

Lab Instrument Walk-in Temperature and Humidity Environmental Test Chamber

Applicable range

Lab Instrument Walk-in Temperature and Humidity Environmental Test Chamber are applicable for testing the performance indexes of aeronautic & astronautic products,ships,weapon, accdemies, motorcycle, information electronics,instruments & meters, materials, electronic engineering, electronic products, various electronic elements, foodstuffs, chemistry, building materials, luggage, adhesion tape, printing, packaging, materials, plastics, medical and so on in high-low temperature and humidity alternation environment.

Features(Lab Instrument Walk-in Temperature and Humidity Environmental Test Chamber)

1. High intelligence: according to the test condition and requirements, the equipment can automaticly control to reach the set value with max ability and to keep the set value with the minimum ability so as to achieve the optimal control of the whole.

2. High reliability: in order to improve the reliability of the whole equipment, all of the main parts are provided by each well-known professional manufacturers.

3. Energy saving and low consumption: the unique design of energy saving technology can greatly reduce running cost of the equipment.

4. Special design: could design and satisfy the customer's special demand according to customer's requirements.

5. Control interface: LIK design color liquid crystal touches dyadic display screen operating system.

6. Special improvement design feature

Chamber materials	1.inner wall: SUS304 stainless steel plate. 2. bottom board: SUS304 stainless steel plate and it's reinforced by the well type high strength square pipe. 3. External: cold rolled steel with power coated; power coated after cleaning and phosphating treatment.
Insulation materials	The thickness of the insulating layer of inner box is 100mm, and the fire resistance material is high strength PU polyurethane foam insulation(which is more thermal and refractory than common PU); thermal insulation coefficient: less than 0.0212kcal/m.hr, and the layer with fire protection design; the insulation layer has high temperature resistance rock wool plus fire gypsum layer which can guarantee the thermal insulation materials doest not melt and burn although catch fire during test.
Pressure balancing port	An electronic pressure balance with controllable pressure. The device can keep the pressure balance inside and outside of test chamber at any time under the conditions of high temperature, high humidity and wet freezing cycle, and avoid the expansion of the chamber caused by the increase of the pressure.
Safaty protection function	There are environmental safety production and explosion-proof safety protection and explosion venting function could ensure that the battery fire or explosion in any case, will not harm to people and the environment. Automatic alarm linkage typeFM200 total flooding extinguishing system.

Intake and exhaust device	The test chamber is equipped with 1 set of inlet and exhaust device, you can manually control the exhaust action through the operation panel switch to intake a large number of air rapidly to discharge the harmful gas in test chamber to outside of the laboratory through the air duct . In order to avoid the harmful gas harm people.
Control panel	Using 10 inch Chinese color LCD touch type man-machine interface and high performance programmable logic controller(PLC), fault indication lamp, adjustable over temperature protection, total power switch and USB interface.
subequipment	a set of subequipment, material SUS304 stainless steel, high temperature resistance -70ºC~+150ºC, nontoxic and odorless in high temperature;

7. Electric Control System

Product Image
(Lab Instrument Walk-in Temperature and Humidity Environmental Test Chamber)

Specifications and technical parameters

Model	LJBT(H)P-10	LJBT(H)P-12	LJBT(H)P- 17.5	LJBT(H)P-22	LJBT(H)P-32	LJBT(H)P-40	LJBT(H)P-60
Inside volume(m³)	10	12	17.5	22	32	40	60
Inner size: WDH(cm)	200250200	200300200	350250220	250400220	340240390	340240480	500200600
Performance	temperature range	R: -20ºC～150ºC; L: -40ºC～150ºC; U: -60ºC～150ºC
	Humidity	20%~98%RH
	Temp. fluctuation	±0.5ºC
	Temp. deviation	±2ºC
	Humidity deviation	±3.0%RH(>75%RH), ±5.0%RH(≤75%RH)*4
	Heating time	20→85ºC within 60 minute
	Colling time	20ºC→rated min. temperature within 60/90/120 minute
temp. and humidity adjust method	BTHC balance adjust temperature(humidity) way.
Chamber materials	Polyurethane foam plastics compound board(inner: stainless steel pate; Outer: galvanized copper plate with power coating.

Controller	Heater	Nickel chromium alloy electrical heater
	Humidifier	Steam humidifier
	Fan	Centrifugal fan
	Refrigeration method	Mechanical compression single grade refrigerating or mechanical compression two element superposition refrigeration(water*5)
	Refrigeration compressor	full closed or semi-closed compressor
	Refrigerant	HCFC-22 or HCFC-23
	Refrigeration heat exchanger	Finned heat exchanger
Controller appliance	Operation interface	10.5" 800*600 dot matrix color LCD touch screen
	Running mode	Constant running, Program running
	Procedure memory capacity	120 programmable programs; each program have 100 steps (paragraph)， 10 cycle steps(each step have 99 cycles at most)
	Setting range	Temperature: -100ºC～300ºC ; Humidity: 0%~99.9%RH*4
	Resolution ratio	Temperature: 0.01ºC ; Humidity: 0.1%RH*4
	Input	PT100
	Controlling mode	PID control
	Communication function	RS-232 interface(optional)
	Print function	Mini-digital printer(optional)
	Subsidiary Function	Alarm functions of the upper and lower limits, self diagnosis, alarm warning, power off protection, timing fuction (automatic starting and stopping)
Water supply	Humidity system	Epuipped with multistage filtering antipenetration water purifier(user offer tap water) or user offer distilled water*4 with resistivity not less than 500Ωm.
	Cooling recirculating water system	Water supply pressure: 0.2～0.4MPa; water temperature≦30ºC.
Power supply	AC380±10%V 50±0.5Hz 3-phase 4-wire+protective earth line.
Standard configurations	Electrothermal glass observation window, leading hole(ɸ80mm), lighting lamp, accumulative timer.
Safaty device	Current circuit breaker, dry heating protector(humidifying system), the water system protection, the fan overheating protection, compressor overprocess,overheating and overcurrent protection, open-phase protection, over temperature protection,.

Customized service	Welcome to Non-standard,Specail requirements,OEM/ODM orders.

1. temperature and
humidity sensor

Armored platinum resistor PT100 Germany JUMO;
Humiditu sensor: Finland VAISALA0.8 class humidity module sensor,
humidity range 0-100%RH, temperature range: -100-200 ºC.

2. Touch screen

Adopt 10 inch color LCD touch type man-machine interface.

3. Showing contents

It can input, display and control the temperature directly. It is equipped with the special
software of our company's test chamber, and the control system adopts the man-machine
dialogue mode. It has automatic, intelligent and humanized design. The control system
can display and set the test parameters, program curves, operating time, the working
state of the heater, chiller and blower. At the same time with the test procedures for
automatic operation and PID parameters self turning function; automatic combination
heating system, cooling system, circulating fan, over-temperature alarm system,
so as to ensure the high quality of the temperature control system.
The main parts are SCHNEDER brand.
Temperature display accuracy is 0.01 ºC and analytical precision control is 0.001.

Software V1.0. Machine records of curves and date can be stored computer and
networked use,storage date can not be changed, you can alway stransfer date,
in any office can view the date. National computer software copyright registration
certificate no. 0698434, soft landing.