Ametek CTC-155, CTC-350, CTC-652, CTC-660 Specifications
CTC Series
Compact Temperature Calibrator
CTC-155/350/652/660
Save Time, Save Money
Best In Class Industrial Calibrator
The new generation CTC temperature calibrators
feature improved accuracy by as much as 25%. They
are now the most accurate industrial class tempera-
ture calibrator on the market.
Wide Temperature Range
The CTC series covers a wide temperature range
from -25 to 660°C (-13 to 1220°F).
We have a model to cover almost all standard
industrial temperature calibration applications.
CTC-155: -25 to 155°C (-13 to 311°F)
CTC-350: 28 to 350°C (82 to 662°F)
CTC-652: 28 to 650°C (82 to 1202°F)
CTC-660: 28 to 660°C (82 to 1220°F)
Fast Calibration
All Jofra temperature calibrators feature a
purpose-dedicated temperature regulator,
which provides a very fast heating and cooling
time, and a short stabilization time. Performing
a three point temperature calibration proce-
dure is fast and easy.
Easy To Carry
The CTC series is designed for both on-site
and maintenance shop calibration.
The calibrator is lightweight, easy to carry, and
the handle is placed away from the heat-zone.
Intelligent Accuracy
External Reference Sensor
Each CTC calibrator has a C model that includes a
signal input for an external reference sensor. The
sensor improves the accuracy even more. Our exter-
nal reference sensors have been developed to match
each of the CTC models.
External Sensor Control
The CTC has two modes when using the external
reference sensor.
In “External ref” mode, the external reference sensor
represents the True value.
In The “Set follows True” mode, the reference sensor
serves two purposes; measuring the reference tem-
peratue and at the same time controlling the block
temperature to the set temperature.
Self Calibration
Adjust the internal reference sensor to give the
same readings as the external reference sensor by
performing a Self Calibration. After the Self Calibra-
tion the calibrator can be used without the external
reference sensor. Regular Self Calibration is needed
to ensure the accuracy. The Self Calibration is simple
and fast to perform following the steps in the refer-
ence manual.
Liquid Filled Sensors and Switches
The tall CTC models, with an immersion depth of 190
mm / 7.5 in, are ideal for calibration of liquid filled
sensors. The block mass and the specially designed
non-linear heating elements in the CTC-652, provide
a homogeneous temperature throughout the block.
It is essential for the quality of the calibration or test
that the full length of the sensing part of the sensor
is exposed to the same temperature. The CTC-652
makes it possible to calibrate analog reading devices
or switches with very high repeatability.
Multi-Information Display
Status Bar
Shows information about
recalibration due status, hot and
cold safety warnings, and date
and time.
Calibration Settings
Shows the calibration settings
and stability criteria for the
reference sensor. Can be accessed
and changed directly in the
display by use of the arrow keys.
Calibration Status
Shows current status of the
calibrator, like heating or
cooling, expected time to
stability, or stability achieved.
Function Bar
Shows the current possibilities of
the function keys.
Function Keys
The function keys serve as shortcuts to the main functions
like Set, Preset, Auto step, and Switch test. When entering
one of the functions, the function keys will then show the
options within the selected function.
Informative Color Display and
Intuitive Operation
The CTC series is designed with an easy-to-read
and very informative color display that gives you
a full overview of the calibration task you are
currently performing.
Useful Features
Mains NormalMVI
The CTC is a very versatile calibrator series with many integrated functions - you can run the calibration in four dierent ways.
MVI – Mains Power Variance
Immunity improves temperature
Set Function
The fastest and simplest way of starting the calibrator.
Simply press SET and type in the desired temperature,
and o you go.
Auto Switch Test
Preset Mode
In Preset mode, you activate one of the preset
temperatures. The presets are programmable for your spe-
cic needs.
Auto Stepping
stability
jor contributor to calibration inaccuracies. Traditional
temperature calibrators often become unstable in
industrial environments where large electrical motors,
heating elements, and other devices are periodically
cycled on and o. The cycling of supply power can
cause lower quality temperature regulators to perform
inconsistently, leading to both inaccurate readings and
unstable temperatures. The CTC series employ the MVI,
thus avoiding such stability problems. The MVI circuitry
continuously monitors the supply voltage and ensures
a constant energy ow to the heating elements.
Unstable mains power supplies are a ma-
Switch test calibration is a perfect time saver. Start the
switch calibration and come back to note the results after
the test. You decide if you want the deadband or not - and
the test can be repeated automatically in up to three sub-
sequent runs.
In AUTOSTEP mode, you can program as much as 12
temperature steps and at the same time set the dwell time.
Even the stability criteria can be programmed. Just start the
sequence and the calibrator will run through the steps.
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