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Ametek CTC-155 Compact Temperature Calibrator
  • Ametek CTC-155 Compact Temperature Calibrator
  • Ametek CTC-155 Compact Temperature Calibrator
  • Ametek CTC-155 Compact Temperature Calibrator

Ametek CTC-155 Compact Temperature Calibrator

Ametek authorised distributor

Includes: Jofra CTC-155 dry-block calibrator, Mains power cable (user specified), Traceable certificate - temperature performance, Tool for insertion tubes, User manual, Test cables (1 x red, 1 x black), USB cable, JofraCal calibration software.

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The Jofra CTC-155 covers a wide temperature range from -25 to 155°C (-13 to 311°F). This makes it sufficent to cover most standard industrial temperature calibration applications.

Insert heat loss due to mass loading from multiple or large sensors can be a challenge for most dry-block calibrators. The CTCs advanced feedback algorithms combined with the external reference sensor effectively addresses these challenges and makes the accuracy even better.

The CTC is supplied with our highly versatile calibration software JofraCal. All calibrations can be documented with a certificate, given that the CTC is controlled from a PC. When the calibrator has reached the desired temperature and stabillity it will prompt you to type in the UUT temperature. JofraCal documents all your calibration needs within temperature, pressure and process calibration.

The CTC-155 is designed for both on-site and maintenance shop calibration with great portability in regard of size and weigth. The calibrator is lightweigth and easy to carry and with a handle placed away from the heat-zone.


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.
Crisp, full-color display, with improved navigation
Auto step function with up to 12 preset temperature points
Optimized switch test with automatic up and down test runs
Manual calibration using pre-defined temperature points
Memory to store up to 5 calibration processes.

Introducing the Ametek CTC Range Video

Ametek CTC-155 Specifications
Temperature Range
Temp. @ ambient 23°C / 73° F -25 to 155°C / -13 to 311°F.
Temp. @ ambient of 0°C / 32° F -39 to 155°C / -38 ti 311°F.
Temp. @ ambient of 50°C / 104° F -7 to 155°C / -19 to 311°F.
CTC-155 with internal ref. sensor ±0.3°C /±0.54°F.
CTC-155 with STS-102 ±0.2°C /±0.36°F.
CTC-155 with STS-120 ±0.2°C /±0.36°F.
Stability ±0.04°C / ±0.07°F.
Radial Homogeneity (difference between holes) 0.03°C / 0.054°F.
Resolution 1 or 0.1 or 0.01.
Units °C or °F or K.
Heating Time
23 to 155°C / 73 to 311°F 13 minutes.
Cooling Time
155 to 23°C / 311 to 73°F 12 minutes.
23 to -25°C / 73 to -13°F 16 minutes.
Time to Stability (typical) 10 minutes.
Mains Power
Voltage 115 V (90-127) / 230 V (180-254)
Max Power Consumption 100 VA
Frequency, US deliveries 60 Hz ±3
Frequency, non US deliveries 50 Hz ±3, 60 Hz ±3
Physical Specifications
Dimensions LxWxH 248x148x305 mm / 9.761x5.83x12.01 in
Weight 5.5 kg / 12.1 lb
Immersion Depth incl. insulation plug 120 mm / 4.53 in
Well diameter 26 mm / 1.02 in
Insert Dimensions (diameter x length) 25,8 mm x 100 mm / 1.01 x 3.9 in
Switch Input (dry contact)
Test Voltage Maximum 14 VDC
Test Current Maximum 1 mA
Digital Interface USB 2.0
Operating Temperature 0 to 50°C / 32 to 122°F
Storage Temperature -20 to 50°C / -4 to 122°F
Humidity 5 to 90% Rh, non-condensing
Protection Class IP-10
External Reference Sensor
STS-120-A-915 -25 to 155°C /-13 to 311°F
Hysteresis (@ 0°C / 32°F) 0.01°C / 0.018°F
Long Term Stability (@ 0°C / 32°F) 0.014°C / 0.025°F
Repeatability 0.004°C/ 0.007°F
Sensing Element Type PT100
Response Time
STS-120-A: t0.5 (50%) 7 sec.
STS-120-A: t0.9 (90%) 18 sec.
Diameter 4 mm / 0.157 in
Length 140 mm / 5.51 in
Max. height over calibrator top 20 mm / 0.79 in
External Reference Sensor
STS-102-A -50 to 155°C /-58 to 311°F
Hysteresis (@ 0°C / 32°F) 0.01°C / 0.018°F
Long Term Stability (@ 0°C / 32°F) 0.014°C / 0.025°F
Repeatability 0.002°C/ 0.0036°F
Sensing element Type PT100
Response Time
STS-120-A: t0.5 (50%) 5 sec.
STS-120-A: t0.9 (90%) 16 sec.
Diameter 4 mm / 0.157 in
Length 30 mm / 1.181 in
Cable Length 1 m / 3.28 ft
Ametek CTC-155 warranty Two-year.


Ametek CTC Range Datasheet

PDF Brochure of the Ametek CTC-155, 350 & 660 Compact Temperature Calibrators.

Download (1.78M)

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Ametek CTC-155 Compact Temperature Calibrator
003 3 mm aluminium predrilled insert. 129407
004 4 mm aluminium predrilled insert. 129408
005 5 mm aluminium predrilled insert. 129409
006 6 mm aluminium predrilled insert. 129410
007 7 mm aluminium predrilled insert. 129411
008 8 mm aluminium predrilled insert. 129412
009 9 mm aluminium predrilled insert. 129413
010 10 mm aluminium predrilled insert. 129414
011 11 mm aluminium predrilled insert. 129415
012 12 mm aluminium predrilled insert. 129416
013 13 mm aluminium predrilled insert. 129417
M01 Multi-hole, Type 1 (1x3, 2x4, 1x5, 1x6, 1x9 mm). 129489
Case Carrying case for CTC Model 155/350/660. 129540
Brushes Cleaning brushes - 4 mm (pack of 3). 122832
Brushes Cleaning brushes - 6 mm (pack of 3). 60F174
Brushes Cleaning brushes - 8 mm (pack of 3). 122822

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