Ametek ITC Series: ITC155A
Industrial Temperature Dry Block Calibrators

  • Dry Block Calibrator (-9 to 311°F) -23 to 155°C
  • Features improved Peltier elements that use a "Multi-Stage Technology" that improves the efficiency, and extends the life of the heating/cooling block
  • Enhanced accuracy and stability-MVI circuitry ensures temperature stability despite mains supply variations
  • Timesaving features- Fast one-key-one-function access to the automatic switch test and the step function
  • Documentation made easy- RS-232 communication and calibration software AMECAL-TEMPERATURE are standard
  • High accuracy and long term stability-specified drift over a one year period of time
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Ametek ITC155A Shown
Product Information
Datasheet 1.62 MB
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The Ametek ITC series is the mid-range dry-block calibrator model offered by AMETEK. The design basis for the ITC series is portability and ease-of-use supplied at a reasonable cost without sacrificing accuracy, performance, and features. The ITC-155 incorporates the features of the high-end ATC series with the functionality of the standard CTC series dry-block calibrators.

The ITC-155 employs the slim and rugged design of the CTC series. This series also features the intuitive user interface, the clear LCD display, and the functionality that is used in the successful CTC series. However, the ITC-155 is designed with the state-of-the-art dual-zone heating block and MVI circuitry that has been adopted from the ATC series. The MVI circuitry ensures stable temperatures even when the mains supply is unstable.

The ITC-155 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 ITC-155 dry-block calibrators are available in 3 different temperature ranges and all models are equipped with RS232 serial communication capabilities. The standard delivery also includes the JOFRACAL calibration PC software.
The model ITC-155 features improved Peltier elements that employ a ’’Multi-Stage Technology’’. This both improves efficiency and extends the useful life of the heating/cooling block.

The practical Peltier element (electronic heating pump) consists of many elements of semiconductor material connected electrically in series and thermally in parallel. These thermoelectric elements and their electrical interconnections are mounted between two ceramic plates. The plates serve to mechanically hold the overall structure together and to electrically insulate the individual elements from one another.

Maximum temperature

From the setup menu, the user can select the maximum temperature limit for the calibrator. This function prevents damage to the sensor-under-test caused by the application of excessive temperatures. The feature also aids in reducing drift resulting from extended periods of expo-sures to high temperatures. This feature can be locked with an access code.
MVI - Improved temperature stability
Unstable mains power supplies are a major contributor to on-site calibration inaccuracies. Traditional temperature calibrators often become unstable in production environments where large electrical motors, heating elements, and other devices are periodically cycled on or off. The cycling of supply power can cause the temperature regulator to perform inconsistently leading to both inaccurate readings and unstable temperatures. The ITC series employ the MVI, thus avoiding such stability problems. The MVI circuitry continuously monitors the supply voltage and ensures a constant energy flow to the heating elements.

Easy-to-use, intuitive operation
All instrument controls may be performed from the front panel. The heat source is positioned away from the panel. This design helps to protect the operator. The main functions on the ITC series are designed with one-key-one-function logic. This means that there are no sub-menus or difficult to remember multiple keystrokes necessary to access primary functions. The easy-to-read, backlit display features dedicated icons, which help in identifying instrument conditions and operational steps.
Features Details
Set temperature The ’’Up’’ and ’’Down’’ arrow keys allow the user to set the exact temperature desired with a resolution of 0.1°.
Instrument setups The ITC series stores the complete instrument setup, including: engineering units, stability criteria, resolution, display contrast, slope (ramp) rate, auto-step settings, and maximum temperature.
Stability indicator A bold checkmark on the display indicates that the calibrator has reached the desired set temperature and is stable. The operator may change the stability criteria and establish a greater sense of security in the calibration results. A convenient countdown timer is activated five minutes before the unit reaches stability.
Automatic switch test Operators can save a lot of time using the automatic thermo switch test function to find values for the ’’Open’’ and ’’Close’’ temperatures. Additionally, this feature displays the hysteresis (deadband) between the two points. The feature ensures a very high repeatability when testing thermo switches. Simply press the ’’SWITCH TEST’’ key to activate the function.
Auto-stepping This feature saves manpower. The operator may stay in the control room, or another remote location, monitoring the output from the sensor-under-test while the ITC series calibrator is placed in the process and automatically changes the temperature using a programmed step value and rate. Up to 9 different temperature steps may be programmed, including the hold time for each step.

The ITC series has a very easy and straightforward procedure for re-calibration/adjustment. There is no need for a screwdriver or PC software. The only thing you need is a reliable reference thermometer.

Place the probe in the calibrator and follow the instructions on the display. Third-party labs and calibration facilities will be able to perform this function if a certificate from an independent source is necessary. Of course, AMETEK can provide you with a traceable calibration certificate from our labs when you require a higher level of confidence.

Calibration of up to 24 sensors with Ametek ASM
Using the Ametek ITC series together with the ASM Advanced Signal Multi-scanner offers a great time-saving automatic solution to calibrate multiple temperature sensors at the same time.

The ASM series is an eight channel scanner controlled by JOFRACAL software on a PC. Up to 3 ASM units can be stacked to calibrate up to 24 sensors at the same time. It can handle signals from 2-, 3- and 4 wire RTD’s, TC’s, transmitters, thermisters, temperature switches and voltage.
For more info on the ADM Advanced Signal Temperature Mulit-Scanner, please visit to the 7533PC page.
JOFRACAL Calibration Software
The JOFRACAL calibration software ensures easy calibration of RTD´s, thermocouples, transmitters, thermoswithes, pressure gauges and pressure switches. JOFRACAL can be used with Ametek DPC-500, APC, CPC and IPI pres-sure calibrators, all Ametek temperature calibrators, as well as Ametek AMC900, ASC300 multi signal calibrator and ASM-800 signal multi scanner.


Minimum Requirements:
  • Intel Pentium II 1.4 GHz Processor
  • 64MB Ram (128MB recommended)
  • Standard VGA (800x600, 256 colors). 1024x768 Recommended
  • CD-Rom Drive for installation of program
  • 1 or 2 free RS-232 serial ports, depending on configurations
Minimum Requirements:
  • Microsoft Windows 98, Microsoft Windows NT 4.0, Microsoft Windows 2000,
  • Microsoft Windows ME, Microsoft Windows XP, Windows Vista\
  • System fonts: MS Sans Serif, Arial
Calibration Software:   View PDF

JOFRACAL calibration software may also be used for manual calibrations, as it can be set up to accept manual entry of calibration data together with other liquid baths, ice points or dry-block heat sources. The calibration data collected may be stored on a PC for later recall or analysis. The ITC calibrator stores the calibration procedure and may be taken out to the process site without using a personal computer. Once all calibrations are completed, the data may be uploaded to the JOFRACAL calibration software for post-processing and printing of certificates. The calibration data collected may be stored on the personal computer for later recall or analysis.

ITC-155 Specifications
Mains specifications
Voltage 115V(90-127)
Frequency US deliveries 60 Hz ±5
Non US deliveries 50 Hz ±5
60 Hz ±5
Power consumption (max) 150 VA
Stability ±0.01°C / ±0.02°F
Resolution 1° or 0.1°
Accuracy ±0.18°C / ±0.32°F
Radial homogeneity (difference between holes) 0.02°C / 0.04°F
Immersion depth 160 mm / 6.30 in
Well diameter 20 mm / 0.79 in
Switch input Test voltage Maximum 5 VDC
Test current Maximum 2.5 mA
Temperature range
Maximum 155°C / 311°F
Minimum @ ambient temperature 0°C / 32°F -39°C / -38°F
23°C / 73°F -23°C / -9°F
40°C / 104°F ±0.18°C / ±0.32°F
Heating time -20 to 23°C / -4 to 73°F 4 minutes
23 to 155°C / 73 to 311°F 14 minutes
-20 to 155°C / -4 to 311°F 18 minutes
Cooling time 55 to 100°C / 311 to 212°F 4 minutes
155 to 23°C / 311 to 73°F 14 minutes
23 to -20°C / 73 to -4°F 23 minutes
155 to -20°C / 311 to -4°F 37 minutes
Serial data interface RS232 (9-pin Male)
Temperature Operating 0 to 40°C / 32 to 104°F
Storage -20 to 60oC / -4 to 140oF
Humidity 0 to 90% RH
Protection class IP-10
Instrument Weight 7.6 kg / 16.8 lb
Size (L x W x H) 241 x 139 x 375 mm / 9.5 x 5.5 x 14.8 in
Non-drilled insert Weight 130 g / 4.6 oz
Insert Dimensions Outer diameter: 19,9 mm / 0.78 in
Inner diameter: 16,9 mm / 0.67 in
Length: 150 mm / 5.91 in
Ordering Information
Model Description Buy Online Price
ITC155A Ametek ITC155A Industrial Temperature Dry Block Calibrator 23 to 155?C (-9 to 311°F) 4mm reference hole  Buy Now $6,980.00
Insert: 1/8 (x2), 1/4, 3/16 Inches, 4mm reference hole
25748CL Ametek ITC155A Industrial Temperature Dry Block Calibrator 23 to 155?C (-9 to 311°F) 1/4" reference hole  Discontinued
Insert: 1/8 (x2), 1/4, 3/16 Inches,  1/4" reference hole
Included Accessories
  • 1 - Mains power cable (115V)
  • 1 - Traceable certificate - temperature performance
  • 1 - Insert
  • 1 - 3 pcs. insulation plugs for 5, 8, 11 mm sensors
  • 1 - Tool for insertion tubes
  • 1 - RS232 cable JOFRACAL calibration software User manual
  • 1 - Reference manual (English)
  • 1 - Test cables (1 x red, 1 x black)


Optional Accessories

One or more insert tubes are required for ITC155A

Insertion Tubes: Single hole

123280 Ametek 123280 Imperial Single hole Insertion tube - 3/16" diameter for the ITC155A  Buy Now $165.00
123281 Ametek 123281 Imperial Single hole Insertion tube - 1/4" diameter for the ITC155A  Buy Now $165.00
123282 Ametek 123282 Imperial Single hole Insertion tube - 5/16" diameter for the ITC155A  Buy Now $165.00
123283 Ametek 123283 Imperial Single hole Insertion tube - 3/8" diameter for the ITC155A  Buy Now $165.00
123301 Ametek 123301 Imperial Single hole Insertion tube - 7/16" diameter for ATC157A/B & ITC155A  Buy Now $165.00
123302 Ametek 123302 Imperial Single hole Insertion tube - 1/2" diameter for ATC157A/B & ITC155A  Buy Now $165.00
25747CL Ametek 125314 Imperial Predrilled Single Insertion tube - 8 x 1/8" for ATC-157 A/B & ITC-155A  Buy Now $155.00
25745CL Ametek 125315 Imperial Predrilled Single Insertion tube - 8 x 3/16" for ATC-157 A/B & ITC-155A  Buy Now $155.00
125316 Ametek 125316 Imperial Predrilled Single Insertion tube - 8 x 1/4" for ATC-157 A/B & ITC-155A  Buy Now $155.00
25744CL Ametek 125317 Imperial Predrilled Single Insertion tube - 8 x 5/16" for ATC-157 A/B & ITC-155A  Buy Now $155.00
60F446 Ametek 60F446 High Temperature Replacement Insert - 8 x 7/8" for ATC-157 A/B & ITC-155A  Buy Now $235.00

Insertion Tubes: Multiple Holes

123295 Ametek 123295 Multi-hole Insertion tube (MO2) for ATC157A/B & ITC155A  Buy Now $305.00
123297 Ametek 123297 Multi-hole Insertion tube (MO4) for ATC157A/B & ITC155A  Buy Now $305.00
123298 Ametek 123298 Multi-hole Insertion tube (MO5) for ATC157A/B & ITC155A  Buy Now $305.00

Insertion Tubes: Blanks

123286 Ametek 123286 Package of 5 blank insertion tubes for ITC155A  Buy Now $315.00


123396 Ametek 123396 Case for ITC Series Calibrators  Buy Now $400.00