The majority of these models
utilise a resistance wire heating element which is wound around the
outside of a ceramic worktube making it an integral part of the heating
element. If the tube is required to contain an atmosphere or is likely
to be contaminated by spillage, a separate work tube should be used.
The thermocouple is located in a protected position between the outside
of the work tube and the heating element, allowing the full work tube
diameter to be used and protecting the thermocouple from mechanical
damage.
The CTF 12/--/1090 and TZF
12/--/1090 are of a different construction and use modular heating elements
of coiled wire embedded in moulded ceramic fibre cylinders. These elements
do not touch the tube allowing it to be replaced or alternatively allow
the use of a heat resisting metal work tube.
Model
MTF
9/15/130
MTF
10/15/130
MTF
10/25/130
MTF
12/25/250
MTF
12/25/400
MTF
12/38/250
CTF 12/65/550
CTF 12/75/700
Max Temp (°C)
900
1000
1000
1200
1200
1200
1200
1200
Tube Inside dia (mm)
15
15
25
25
25
38
65
75
Heated Length (mm)
130
130
130
250
400
250
550
700
Overall Length (mm)
180
150
150
300
450
300
600
750
Uniformity measured
at temp °C
800
900
900
1100
1100
1100
Uniform Length
+/-5°C
30
30
45
80
200
95
230
265
Heat up
(mins) (note a)
7
5
10
15
25
30
45
45
Horiz or Vert use
Option
Option
Option
Option
Option
Option
Option
Option
Max power (kW)
0.4
0.4
0.4
0.7
1.0
1.0
2
3
Holding Power (kW)
(note b)
0.1
0.1
0.1
0.2
0.3
0.2
0.6
0.8
Nett Weight (Kg)
2
3
3
10
15
10
25
28
External height (mm)
180
265
265
375
375
430
525
525
External width (mm)
90
150
150
370
450
370
625
775
External depth (mm)
180
175
175
375
375
375
360
360
Note a: To 100°C below maximum temperature.
Note b: Holding power at 100°C below maximum, tube ends insulated. Work tube length = overall furnace length
Model
MTF
12/38/400
CTF
12/65/550
MTF
12/75/700
MTF
12/100/900
MTF (note c)
12/--/1090
Max Temp (°C)
1200
1200
1200
1200
1200
Tube Inside dia (mm)
38
65
75
100
150
Heated Length (mm)
400
550
700
900
1090
Overall Length (mm)
450
600
750
950
1270
Uniformity measured
at temp °C
1000
1100
1100
1100
-
Uniform Length
+/-5°C
135
300
265
640
(note d)
Heat up
(mins) (note a)
25
45
45
90
(note e)
Horiz or Vert use
Option
Option
Option
Option
Option
Max power (kW)
1.5
2.0
3.0
4.5
7.0
Holding Power (kW)
(note b)
0.3
0.6
0.8
1.0
3.0
Nett Weight (Kg)
15
25
28
35
60
External height (mm)
430
525
525
525
660
External width (mm)
450
625
775
975
1335
External depth (mm)
375
360
360
360
440
Note c: Maximum diameter 150mm. Smaller tube sizes available
Note d: Uniformity will vary greatly depending on the size and material of the work tube.
Note e: heat up rate will vary with work tube size and material.
