The CTC series is designed for both on-site and maintenance shop use. The applications are generally critical process control but can vary based on calibration and testing requirements. The user interface is easy and intuitive. One-key-one-function gives quick access to timesaving features such as the switch test or the auto-stepping function. The JOFRA CTC series consists of six different models that differ in temperature ranges and immersion depths. All models feature a large, backlit LCD display panel, which is easy-to-read even in well-lit areas. Units feature an informative display that provides icons and information regarding the status of the CTC and the calibration in progress.
CTC-320 and CTC-650 are exceptionally fast and have deep immersion depths of 200 mm (7.9 in). The CTC-320 A heats up to maximum temperature in just 4 minutes and the CTC-650 A in just 10 minutes. The fast performance of the heating block is due to a special profile that minimizes the mass, but still contains a 26 mm (1 in) insertion tube. The design is a balanced compromise between temperature stability / homogeneity and fast heating / cooling.
The CTC-1200 A calibrator covers the temperature scale in the high range from 300 to 1205°C (572 to 2200°F) having an excellent stability of 0.1°C (0.18°F). The calibrator heats up very quickly and combining this ability with the standard auto stepping function makes it a very timesaving calibrator. Sensors tested by the CTC-1200 A are immersed 110 mm (4.3 in) into the insert to ensure that the whole thermo-sensitive part of the sensor is exposed to the required temperature.
Models and temperature ranges
CTC-140 A -17 to 140°C (-1 to 284°F)
CTC-320 A 33 to 320°C (91 to 608°F)
CTC-320 B 33 to 320°C (91 to 608°F)
CTC-650 A 33 to 650°C (91 to 1202°F)
CTC-650 B 33 to 650°C (91 to 1202°F)
CTC-1200 A 300 to 1200°C (572 to 2200°F)
Features for the CTC
- Interchangeable inserts
- Multi-hole insertion tubes
- MVI Mains Variance Immunity
- Automatic switch test
- RS232 and JOFRACAL calibration software
- Multi information display
- Safty banana bushings
- Auto stepping
- Stability indicator
- Count down timer (shows when unit is stable)
- Programmable maximum temperature
- Fast simulation/training mode
- Re-calibration from keyboard
| Selection guide CTC Series |
CTC-140 A |
CTC-320 A |
CTC-320 B | CTC-650 A |
CTC-650 B |
CTC-1200 A |
|
Temperature range @ ambient 23°C / 73°F |
-17 to 140°C (-1 to 284°F) |
33 to 320°C (91 to 608°F) |
33 to 320°C (91 to 608°F) |
33 to 650°C (91 to 1202°F) |
33 to 650°C (91 to 1202°F) |
300 to 1200°C (572 to 2200°F) |
| Heating time | 15 min. | 4 min. | 10 min. | 20 min. | 39 min. | 45 min. |
| Accuracy | 0.4°C (0.7°F) | 0.5°C (0.9°F) | 0.5°C (0.9°F) | 0.9°C (1.6°F) | 0.6°C (1.1°F) | 2.0°C (3.6°F) |
| Stability | 0.05°C (0.09°F) | 0.1°C (0.18°F) | 0.1°C (0.18°F) | 0.1°C (0.18°F) | 0.05°C (0.09°F) | 0.1°C (0.18°F) |
| Immersion depth | 115 mm (4.5 in.) | 110 mm (4.3 in.) | 190 mm (7.5 in.) | 110 mm (4.3 in.) | 190 mm (7.5 in.) | 110 mm (4.3 in.) |
| Insert diameter | 19 mm (3/4 in.) | 26 mm (1 in.) | 26 mm (1 in). | 26 mm (1 in.) | 26 mm (1 in.) | 27 mm (1 in.) |
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