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PTC Series - Professional Temperature Calibrator


The PTC Series from Jofra matches laboratory features such as a wide temperature range, high accuracy, stability, and speed with our well-known, long lasting quality into a single industrial calibrator. The PTC Series features an active dual zone temperature control which provides excellent temperature homogeneity in the well.

 The PTC calibrator comes in three different models:

•  Model A - basic model, without input
•  Model B - full model, with DLC sensor input and input for reference sensor and sensor-under-test
•  Model C - middle model with DLC sensor input and input for reference sensor

The PTC offers many of the well-known JOFRA features, such as:

•  Easy-to-read color VGA display with perfect overview of the actual calibration status
•  Intelligent recalibration information (IRI)
•  Intuitive, fast and user-friendly navigation
•  Lightweight and easy to carry around
•  Functional carrying case
•  Multi-hole insert kits covering all the most used sensor sizes
•  High profile design and the well-known long lasting JOFRA quality

Wide temperature range (please click on model name to download datasheet)
PTC-125 from -90 to 125°C (-130 to 257°F)
PTC-155 from -25 to 155°C (-22 to 311°F)
PTC-350 from 33 to 350°C (91 to 662°F)
PTC-425 from 33 to 425°C (91 to 797°F) NEW for 2017
PTC-660 from 33 to 660°C (91 to 1220°F)

Efficient cooling technology

The PTC-125 with both heating and cooling capabilities features the FPSC (Free piston stirling cooler) as the cooling source. This is much more efficient than thermo-electric (Peltier) coolers.

High accuracy
Down to ±0.06°C (±0.11°F) using the external reference sensor. 4-wire True-Ohm-Measurement technology applied

Excellent stability 0.01°C

Improved temperature homogeneity
Unique active dual-zone block ensures good temperature homogeneity in the calibration zone

Intelligent reference sensors
JOFRA reference sensors are supplied with intelligent plugs, containing calibration data (coefficients) of the reference sensor. A truly plug’n’play calibration system

USB communication
All PTC calibrators communicate via an easy-to-use USB port

High speed heating and cooling times. 350°C in only 7 minutes

Work order functionality
Upload advanced calibration routines to your PTC for troublefree and automatic on-site calibrations


One of the world’s leading manufacturers
and developers of calibration instruments for
temperature, pressure and process signals