1800℃ Three Zones Tube Furnace_Zhengzhou Kejia Furnace

Specific Introduction:
KJ-1800X-III is a CE certified and UL ready 60mm OD three zones tube furnace with vacuum sealing flange and 30 mm Dia. quartz window. The center heating zone is 220mm in length, the other two zones are 200mm in length and they are controlled by three precision 30 segments digital temperature controllers independently. All of three zones are heated by Kanthel-1900 grade MoSi2 elements up to 1800°C. The tube furnace can create a various thermal gradient by adjusting three zones' temperature. It is an excellent furnace designed for studying the material 's Raman spectrum under high temperatures. also, can be used for epitaxial film growth by CVD.
Parameters:

Furnace Structure	Double-layer steel case with two cooling fans which ensure low surface temperature YSZ fibrous insulation is used as internal refractory High purity fibrous alumina insulation is used as external refractory Included vacuum flange with 30 mm quartz window. The laser beam can penetrate the furnace through the window and sapphire thermal block.
Power	15 KW max (75A air breaker required ) 8 KW for normal working temperature
Voltage	AC 220V three phase
Max. Temperature	Each zone: 1800 °C max. (< 2 hours ) 1750°C continuous
Heating Elements	14 pcs Kanthal -super-1900 grade MoSi2 heating elements installed
Normal Heating/Cooling Rate	5°C /min
Heating Zone Length	Three zones: total length: 610 mm (Z1 & Z3 = 195 Z2 = 220 mm) Constant temperature zone: 300 mm (if set up three zone at 1600°C)
Tube Size & Vacuum Flange	99.8% purity Alumina Tube 60 OD x 54 ID x 1200mm L 60 mm stainless steel water cooling vacuum sealing flange with valve and meter is included special quick clamp flanges for easy installation 30mm Dia x 3 mm double side polished single-crystal window installed on the flange, which allows the laser beam to go through the tube In order to block heating radiation and make laser bean transparent, Two sapphire rods with two ends polished must be placed inside furnace ( please order separately ) 16L/min water chiller is required for cooling flange
Temperature Control	Three digital controllers via SCR (Silicon Controlled Rectifier) power control with phase angle fired Each controller is 30 programmable segment for precise control of heating, cooling rate and dwells time Built-in PID Auto-Tune function with overheating & broken thermocouple protection Over-temperature protection and alarm allows for operation without attendant(s) +/- 1 ºC temperature accuracy Three B-type thermocouples (one for each zone) RS485 Communications Port
European Temperature Controllers (optional upgrade)	1 heating channel 1 program of 8 or 24 segment Alarm Relay: Form 'A' and Form ‘C’ built-in Digital Communications: RS485 Temperature Accuracy: ± 0.1ºC Recipes: Using a PC tool recipes can be created that can be used to change the operating parameters of the 3000 simply by selecting a new recipe via the HMI. This is very useful where multiple products are processed using the same controller but require different parameters to be set.
Power Cable & Plug	A 10 feet length 8-3 AWG heavy duty UL approved power cable is included Extra length cable can be ordered by click picture left The plug is not included, but you can order from your local hardware store according to female plug in your lab.
Dimensions	1500 L x 550 W x 940 H, mm
Net Weight	300 kg
Warranty	One year limited warranty with lifetime support (Consumable parts such as processing tubes, o-rings, and heating elements are not covered by the warranty, please order the replacement at related products page.)
Compliance	Please selects the certificate in the options bar: CE Certificate & UL/CSA ready: CE approval, ready to pass UL/CSA certificate at extra cost UL or TUV certificate - UL approval (UL 61010),
Shipping Package Size After Crating	47"x45"x45"(1200L x 1150W x 1150Hmm)
Shipping Weight	400 kg
Warnings	The tube furnaces with alumina tube are designed for use under vacuum and low pressure < 0.02 Mpa Never use graphite crucible in the alumina tube. Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. The gas flow rate should be limited to < 200 SCCM ( or 200ml/min ) Vacuum limit definition for all alumina tube furnaces: * Vacuum pressures may only be safely used up to 1500°C

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