Rabu, 09 Maret 2016

LENTON PTF - Three zone tube furnaces : 1200, 1500 & 1600°C

These units have a maximum operating temperature of 1200°C, 1500°C and 1600°C.

For units at 1200°C, heating is via an integral resistance wire element wound on to the ceramic work tube which is an integral part of the furnace. At 1500°C and 1600°C, silicon carbide rod elements are mounted parallel to the tube.

The end zone controllers are coupled to a centre zone thermocouple enabling the centre zone temperatures to be closely linked. This system provides a longer uniform zone temperature than that achieved by the use of single zone furnace of the same length.

Temperature uniformity

Temperature variation within the uniform zone is typically +5°C, with a significant proportion of the uniform zone length within 
+1°C. To improve the uniform zone length within a tube furnace, it is necessary to use multi-zone furnaces; the usual configuration is 3 zones.

Temperature uniformity is dependent on the tube diameter and heated length.
PTF three zone tube furnace 

Model 
(1200°C models)
PTF 12/38/500PTF 12/50/610PTF 12/75/710PTF 12/100/910
Maximum temperature (°C)1200120012001200
Maximum continuous  temperature (°C)1150115011501150
Tube inside diameter (mm)385075100
Heated length (mm)500 610750940
Maximum power (kW)1.52.02.754.2
External dimensions including console
(mm - h x l x d)

565 x 56 x 300

565 x 670 x300

565 x 810 x 300

625 x 1000 x 400
Work tube length : ID x length (mm)25 x 750  38 x 90060 x 100075 x 1500

Model 
(1500°C & 1600°C models)
PTF 
15/50/450
PTF 15/75/450PTF 15/50/610 PTF 
15/75/610
PTF 16/50/450 PTF 16/75/450PTF 
16/50/ 610 
PTF 16/75/610 
Maximum 
temperature (°C)
15001500150015001600160016001600
Maximum continuous 
temperature (°C)
14501450145014501550155015501550
Tube inside diameter (mm)5075507550755075
Heated length (mm)450 450610610450450610610
Maximum power (kW)5.05.08.08.06.06.09.29.2
External dimensions including console
(mm - h x l x d)
640
830
420
640
830
420
640
1130
420
640
1130
420
640
830
420 
640
830
420 
640
1130
420 
640
1130
420 
Work tubes : ID x length (mm)
Short
Long


50 x 900
50 x 1200 


75 x 900
75 x 1200


50 x 1200
50 x 1500


75 x 1200
75 x 1500


50 x 900
50 x 1200


75 x 900
75 x 1200 


50 x 1200
50 x 1500


75 x 1200
75 x 1500

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