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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.
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| 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. |
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| 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. | |||||