Temperature Cycling Test Chambers LETC

Fast change rates testing chamber is suitable for testing the changes of instruments, electrical, electronic products, machine and parts under the rapid temperature change or the the gradient conditions, takes advantage of compact, modern scroll compressors to bring fast temperature cycling to small form factor.

Heating and Cooling Rate: 3°C/min,5°C/min,8°C/min,10°C/min,15°C/min,20°C/min,25°C/min,30°C/min linear average per minute or Nonliear average.

Fast change rates testing chamber is suitable for testing the changes of instruments,electrical,electronic products,machine and parts under the rapid temperature.

change or the the gradient conditions, takes advantage of compact, modern scroll compressors to bring fast temperature cycling to small form factor. Temperature cycling rates from 3 to 30°C/min. are possible.The temperatures range are available: -160℃, -150℃,-120℃, -100℃, -80℃,-70℃, -60℃,-40℃,-20℃,0℃~+150℃,200℃, 250℃,300℃,400℃,500℃,600℃,700℃,800℃,900℃,1000℃.

The faster cycle times can be used to meet more aggressive test methods that require thermal stress during transitions. Significant test time can be saved in completing tests, as well.

To demonstrate performance, use the international standard IEC 60068 3-5 measured at the supply air. Temperature cycles are run from hot to cold extremes, and the middle 80% of the transition is timed to determine performance. Your actual cycling results will vary depending on methodology, including the start and end temperatures, and the amount of samples loaded.

Quality Construction

Stainless steel exterior and interior
Rounded interior corners for easy cleaning
Full thermal break around doorframe and door
Rotating door latch is easy and secure
Dual-layer insulation of fiberglass and expanded foam for thermal integrity
One 2" (50mm) to One 4" (100mm) diameter cable port on the left, with an impervious, flexible silicone plug
Easy lift-off service panels
Pressure relief port to allow air volume changes due to rapid temperature changes
Three levels of overheat protection

FTF Programmer/Controller

Popular PID controller with touch-screen operation
Stores 120 different profiles with up to 1200 steps each (ramp, soak, jump, auto-start, end)
Step types include: ramp, soak, jump, auto-start, and end
Ethernet interface for remote monitoring and operation

Recommended options

Dry air purge, to compensate for quickly shrinking air during cooling, as well as to reduce risk of condensation.
Product temperature control, allows feedback from a second sensor on the product. Ensures faster completion of transition steps.

Technical parameters:

Model No	LETC-080	LETC-150	LETC-225	LETC-306	LETC-408	LETC-800	LETC-1000
Working room(L)	80	150	225	306	408	800	1000
Working room(L)	400500400	500600500	500750600	600850600	600850800	10001000800	100010001000
Inner chamber size(mm)WHD	9009001500	95015001050	150018001550	160020301550	160020301750	210022801950	210022801950
G.W.(KGs)	380	450	480	550	600	800	900
Testing temperature range	-160℃,-150℃,-120℃,-100℃,-80℃,-70℃,-60℃,-40℃，-20℃,0℃~+150℃,200℃,250℃,300℃,400℃,500℃,600℃,700℃,800℃,900℃,1000℃
Rapid Changes Temp.Range	-70℃：-50～+85℃(KS)；-40℃：-20～+85℃(KL)；-20℃：0～+85℃(KL)
Heating & Cooling Rate	3°C/min, 5°C/min, 8°C/min, 10°C/min, 15°C/min,20°C/min,25°C/min,30°C/min linear or nonlinear average
Performance	Temperature range	-160℃,-150℃,-120℃,-100℃,-80℃,-70℃,-60℃,-40℃，-20℃,0℃~+150℃,200℃,250℃,300℃,400℃,500℃
	Humidity range	20%RH ～98%RH(10%RH ～98%RH or 5%RH ～98%RH)
	Temp.fluctuation	±2.0℃
	Temp.Uniformity	±1.5℃
	Temp.resolution	0.01℃
	Heating rate	-70～150℃<60min;-40～150℃<50min;+20～150℃<35min
	Cooling rate	+20～-70℃<70min;+20～-40℃<55min;+20～-20℃<35min
Material	Exterior chamber material	Stainless steel plate+ powder coated
	Inner chamber material	SUS#304 stainless steel plate
	Insulation Material	PU & Fiberglass wool
System	Air circulation system	Cooling fan
	Fan	Sirocco fan
	Heating System	SUS#304 stainless steel high-speed heater
	Air flow	Forced Air Circulation(It enters at bottom and leaves at top)
	Humidification system	Surface evaporation system
	Refrigeration system	Imported compressor,Tecumseh compressor,finned type evaporator,air(Water)-cooling condenser
	Refrigerating fluid	R23/ R404A USA Honeywell.
	Condensation	Air(Water)-cooling condenser
	Dehumidifying system	ADP critical dew point cooling/dehumidifying method
	Controlling system	PID Digital electronic indicators+S.S.R.With PID automatic calculation capability
	Operation interface	Expertise in Temperature & Humidity Controller,Chinese-English Shift.
Controller	Programmable capability	Save 120 profiles with up to 1200 steps each
	Setting range	Temperature：-100℃+600℃
	Reading accuracy	Temperature：0.01℃
	Input	PT100 or T Sensor
	Control	PID control
	Communication interface	Equipped with standard communication interface devices USB,RS-232 and RS-485,enable the test chamber to be connected with personal computer(PC),to achieve multi-machine control and management at the same time.Standard: USB external memory port.Optional: RS-232, RS-485, GP-IB, Ethernet
	Print function	Japan Yokogawa Temperature Recorder(Optional accessories)
	Auxiliary	Limit Alarm,Self Diagnosis,Alarm Display(Failure Cause),Timing device(Automatic Switch)
Accessories	Multi-layer vacuum glass observation window,Cable port(50mm),Controlling status indicator lamp,Chamber light,Specimen loading shelf(2pcs,position adjustable)，Guaze 5pcs,Operation manual 1 set.
Safety protection device	Over-heat protection circuit breaker,Compressor overload protection,Control system overload protection,Humidifying system overload protection,Overload indicator lamp.
Power supply	AC 1Ψ 110V;AC 1Ψ 220V;3Ψ380V 60/50Hz
Customized service	Welcome to Non-standard,Specail requirements,OEM/ODM orders.
The technical information will be subjected to change without notice

Optional accessories

Inner glass door with manual operating ports.
Temp./Humi.Recorder.
RS-485 interface can be linked to Personal computer(PC) and achieve multi-level control & recording software management.
Liquid nitrogen(LN2)/Liquid Carbon Dioxide(LCO2) fast cooling-down system.

Model	LETC
Brand	LabEquipx