JOFRA CTC Series Temperature Calibrators

  • Temperature range:
    • CTC-155: -25 to 155°C (-13 to 311°F)
    • CTC-350: 28 to 350°C (82 to 662°F)
    • CTC-660: 28 to 660°C (82 to 1220°F)
  • Accuracy:
    • CTC-155: up to ±0.2˚C (±0.36˚F)
    • CTC-350: up to ±0.25˚C (±0.54˚F)
    • CTC-660: up to ±0.45˚C (±0.81˚F)
  • Stability:
    • CTC-155: ±0.04˚C (±0.07˚F)
    • CTC-350: ±0.05˚C (±0.09˚F)
    • CTC-660: ±0.1˚C (±0.18˚F)
  • Heating time:
  • CTC-155: 13 minutes (from 23 to 155°C / 73 to 311°F)
    • CTC-350: 6 minutes (from 23 to 350°C / 73 to 662°F)
    • CTC-660: 18 minutes (from 23 to 660°C / 73 to 1220°F)
  • Well depth: 115mm (120mm for CTC-155)
  • Well diameter: 26mm
  • Informative color display and intuitive operation
  • Wide range of insert options avaialble
  • Optional input for external reference sensor
  • MVI circuitry ensures stability despite mains supply variations
  • Silent mode operation
  • Lightweight and easy to carry


The CTC Series is a fast, time-saving, reliable dry block temperature calibrator designed for on-site use. The large color display is easy-to-read and provides icons and information regarding the status of the calibrator and the calibration in process. Popular functions like automatic switch test and auto stepping are available with special one-key-one-function buttons.   
Speed, portability, cleanliness, and wide temperature range are all superior over liquid bath systems.

• Temperature range from -25 to 1205°C (-13 to 2200°F) with 6 models
• Accuracy to ± 0.2°C and Stability to ± 0.04°C
• Lightweight and easy to carry
• Multi-hole and/or insert kits
• Input for external reference sensor on all C models
• MVI circuitry ensures stability despite mains supply variations

What’s in the Box

  • Mains power cable (user specified)
  • Traceable calibration certificate
  • Tool for insertion tubes
  • Insert (user specified)
  • User manual
  • Test cables (1 x red, 1 x black)
  • USB cable
  • JofraCal calibration software
  • Heat shield (CTC-660 only)