Jofra CTC650A

Temperature Calibrator

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Jofra CTC650A

JOFRA Compact Temperature Calibrator Model CTC-650 A 33 to 650°C (91 to 1202°F)


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.

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

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