Ametek ETC125 Easy Temperature Calibrator
Dry Block Calibrator, -10° to 125°C, 4 Inserts

  • 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 ETC125 Shown
Product Information
Datasheet 1.34 MBPDF
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Designed for people who perform tests and verifications of temperature sensing devices in the field. This instrument is ideal when time is a critical factor and the highest accuracy is not a critical factor. Reduced size and weight are important considerations because the unit is able to fit into a tool box or instrument carrying case and can be used for sensors that are difficult to access.

One-key-one-function user interface provides immediate access to set-ting the temperature and the auto-step timesaving function. There is no need for manipulation of sophisticated menus. The Stability indicator provides audible and visual prompts when the temperature is stable. This function also includes a 3 minute countdown before the stable condition.

Stainless steel and rubber side panels make the instrument suitable for many years of faithful duty in an industrial environment.

Cooling and heating

The ETC-125 A is a simple yet effective tool for verifying temperature instruments that also require references below ambient temperatures: e.g. air-conditioning and cold counters. The predrilled holes allow the use of an insertion tube in the largest bore. This increases the flex-ibility to mETCh many sensor-under-test sizes.
Easy-to-use, intuitive operation
All instrument controls are accessed directly from the front panel. The main functions on the ETC series are designed with one-key-one-function logic. This means that there are no difficult multiple keystrokes to remember to access primary functions. The easy-to-read, backlit display features dedicated icons, which help in identifying instrument conditions and operational steps.

Set temperature
The ’’Up’’ and ’’Down’’ arrow keys allow the user to set the exact temperature desired with a resolution of 0.1°C or °F.

Instrument setups
The ETC-series stores the complete instrument setup, including: engineering units, stability criteria, resolution, auto-step settings, and maximum temperature.

Stability indicator
The 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 level of confidence in the calibration results as desired. A convenient countdown timer is activated three minutes before the unit reaches stability. This prompts you to be prepared to record results.

This feature saves time. The operator may stay in the control room, or another remote location, monitoring the out-put from the sensor-under-test while the ETC- 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. This feature is also ideal for burning-in new sensors prior to installation; this minimizes initial drift and allows for initial testing. It is also useful for testing temperature data loggers.

Maximum temperature
From the setup menu, you can select a lower maximum temperature limit for the calibrator. This function prevents damage to the sensor-under-test caused by the application of excessive temperatures.
Re-calibration/adjustments made easy
The ETC- 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.

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.
ITC-320A Specifications
Mains specifications
Voltage Multivoltage 115VAC and 230VAC
Frequency 47 - 63 Hz
Power consumption (max) 75 VA
Temperature range @ ambient temp. 23°C / 73°F Maximum 125°C / 257°F
Minimum @ ambient temp. 0°C / 32°F -18°C / -0°F
Minimum @ ambient temp. 23°C / 73°F -10°C /-14°F
Minimum @ ambient temp. 40°C / 104°F 6°C / 43°F
Resolution Selectable 1º or 0.1º
Stability ±0.05°C / +0.09°F
Time to stability 3 Minutes
Resolution 1° or 0.1°
Accuracy +0.5°C / +0.9°F
Immersion depth 110 mm / 4.3 in
Auto stepping Programmable Up to 9 Steps
Dwell time on each step Programmable
Multi-information display Stability indicator Clear Checkmark
Countdown timer before stable 3 Minutes
Temperature SET and READ simultaneously
Alphanumeric messages Yes
Calibration status icons Yes
Service facilities
Adjustment of the unit from the keypad Yes
Self explaining guide in display Yes
Other information Display serial number, software revision level, and last calibration date
Setup facilities
Stability criteria Extra time before "stable indication" is shown
Display resolution 1° or 1°C/°F
Temperature units °C or °F
Slope rate 0.1 to 9.9°/minute
Maximum temperature Any value within range
Temperature range
Range 33 to 650°C / 91 to 1202°F
Heating time -10 to 23°C / 14 to 73°F 3 minutes
23 to 100°C / 73 to 212°F 11 minutes
100 to 125°C / 212 to 257°F 7 minutes
Cooling time 125 to 100°C / 257 to 212°F 1 minutes
100 to 0°C / 212 to 32°F 17 minutes
0 to -10°C / 32 to 14°F 14 minutes
Training mode (heating/cooling block disabled) Simulation of all functions Yes
Simulating heating and cooling Approx. 100° per minute
Temperature Operating 0 to 40°C / 32 to 104°F
Storage -20 to 50°C / -4 to 122°F
Humidity 0 to 90% RH
Serial data interface RS232 (9-pin Male)
Temperature Operating 0 to 40°C / 32 to 104°F
Storage -20 to 60°C / -4 to 140°F
Instrument Weight 1.8 kg / 3.9 lb
Size (L x W x H) 172 × 72 × 182 mm / 6.8 × 2.8 × 7.2 in
Ordering Guide
Model Product Description
ETC-125 A, -10 to 125°C (14 to 257°F)
Code Power Supply
Multi Voltage 115 and 230V AC
Code Mains Power Cable Type
European, 230V
Code Holes for Sensor Under Test
Metric (12.5 mm, 6 mm, 4 mm, 8 mm)
Imperial (1/2 in, 3/8 in, 1/4 in, 5/32 in)
Code Calibration Certificate
NPL and NIST traceable calibration certificate(standard delivery)
Accredited calibration certificate(on quotation basis)
Code Options
Carrying case
No option used
Sample Order Number
ETC125AMULB02EC - JOFRA ETC-125 A series dry-block, Multi Voltage, US power cord, imperial drilled multihole block, standard NPL/NIST traceable certificate and carrying case.
Ordering Information
Model Description Buy Online Price
ETC125A Ametek Easy Temperature Dry Block Calibrator Discontinued
Included Accessories
  • 1 - Calibration software AMECAL-LIGHT
  • 1 - User & reference manual
  • 1 - Mains power cable
  • 1 - Shoulder strap
  • 1 - RS-232 cable
  • 1 - 1x predrilled insertion tube
  • 1 - Tool for insertion tube
  • 1 - Factory traceable calibration certificate