Ametek Jofra CTC-350 Compact Temperature Calibrator

Ametek Jofra CTC-350 Compact Temperature Calibrator

Ametek Jofra CTC-350 compact dry-block temperature calibrator features improved accuracy by as much as 25% over the previous CTC version. This makes it the most accurate industrial class temperature calibrator on the market with a range of +28°C to +350°C (+82°F to +662°F)

Models:

There are two models of the CTC-350 these include.

• CTC-350 A compact temperature calibrator base model only
• CTC-350 C compact temperature calibrator with input for refence sensor
• Note reference sensor sold separately.

Key Features:

• Accuracy – Down to ± 0.40°C (±0.72°F) using external reference sensor.
• Excellent Stability ±0.05°C (0.09°F)
• Wide temperature range +28°C to +350°C (+82°F to +662°F)
• Intelligent Reference Sensors – Jofra reference sensors are supplied with intelligent plugs, holding the calibration data (coefficients) of the reference sensor. This is a plug n’ play calibration system
• Easy to carry – weighing only 5.0 kg (11.0 lb)

Wide Temperature Range

With a wide temperature range from +28°C to +350°C (+82°F to +662°F). This makes it possible to cover most industrial temperature applications.

Fast Temperature Calibration

The CTC feature a purpose-dedicated temperature regulator, which provides a very fast heating and cooling time.  Performing a three-point calibration procedure is fast and effortless.

Easy to Carry

The CTC-350 is used for both on-site and maintenance shop calibration.  It is lightweight, easy to carry, and the handle is placed away for the heat-zone

External Reference Sensor (model C)

The model C includes a signal input for an external reference sensor.  The sensor improves the accuracy even more.  The external reference sensor has been developed to match each to the CTC models.

 External Sensor Control

The CTC-350 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 temperature 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-Calibration the calibrator can be used without the external reference sensor.  Regular Self-Calibration is needed to ensure accuracy.  The Self-Calibration is simple to perform following the steps in the reference manual.

Multi-informational Display

The colour display is easy to read and very informative that fives a full overview of the calibration task you are currently performing.  The main temperatures, like SET, READ, TRUE and SUT (Sensor under test), are always displayed at all stages of the programming or calibration procedure.

The display contains information at a glance, such as:

• Status bar – showing information about the recalibration due status, hot and cold safety warnings, date and time
• Calibration settings – 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 – displays the current status of the calibrator, like heating or cooling, expected time to stability, or stability achieved.
• Function bar – shows the current possibilities if the function keys
• Function keys – the function keys serve as shortcuts to the main functions like Set, Pre-set, Auto step and switch test. When entering one of the functions, the function keys will then show the options within the selected function.

Useful Features

The CTC-350 is very versatile calibrator with many integrated functions – you can run the calibration in four different ways.

• Set function
• The fastest and simplest way to use the calibrator. Simply press Set and type in the desired temperature and off you go.
• Auto Switch Test
• Switch test calibration is a perfect time saver. Start the switch calibration and come back to note the results after the test.  You can decide if you want the deadband or not and the test can be repeated automatically in the up to three subsequence runs.
• Pre-Set Mode
• Pre-set mode, you activate one of the pre-set temperatures. The pre-sets are programmable for your specific needs.
• Auto Stepping
• 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.

MVI

Mains power variance immunity improves temperature stability.  Unstable mains supplies are a major contributor to calibration inaccuracies.  Traditional temperature calibrators often become unstable in Industrial environments where electrical motors, heating elements and other devices are periodically cycled on and off.   The cycling supply can cause lower quality temperature regulators to perform inconsistently, leading to both inaccurate reading 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 flow to the heating elements.

Multi Sensor Calibration

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.

IRI – Intelligent Recalibration Information

When switching on the CTC-350 calibrator or connecting the reference sensor, the calibrator immediately warns the user if any of the calibration certificates are overdue.  A buzzer and warning appear.

Plug & Play Reference Sensors

All STS reference sensors are plug and play as they contain information in the connector’s memory chip: sensor coefficients, unique serial number, temperature range, calibration date, calibration interval.

Reference Sensor Protection

The CTC-350 will be blocked if it is set to a temperature outside of the reference sensors specifications.  This protects the reference sensor from being damaged.

Broad Range of Inserts

The CTC series offers a broad range of inserts to match the diameter of almost any unit under test.  For flexibility, there is multi-hole inserts with the most common sensor diameters in both metric and imperial measures.

Silent Mode Operation

The CTC-350 calibrator can be programmed to run in silent operation.  This function is an advantage if calibrating in a laboratory if an office.  If used in silent operation the calibrator in not using its full cooling potential.

Support Rod Set

The support rod can be mounted on all the CTC calibrators and it is used to hold the sensor under test in its position while calibrating. Includes rod, sensor grip and fixture.

Online Firmware Upgrade

You can download firmware and software updates at www.ametekcalibration.com Register your products and receive notifications when there is a firmware upgrade or other useful information regarding the instrument.

Protective Carrying Case

The specially designed protective carrying case gives excellent protection for the CTC calibrators.  The carrying case has compartments for inserts, cables, manuals, plugs and more.

JofraCal Calibration Software

The CTC-350 is supplied with the highly versatile calibration software JofraCal.  All calibrations can be documented with a certificate, given that the CTC is controlled for a PC.  When the calibrated has reached the desired temperature and stability it will prompt you to type in the UUT temperature.  JofraCal documents all your calibration needs.

Functional Specification:

Physical Specification:

External Reference Sensor STS-120-A-935

Predrilled Inserts:

All predrilled inserts are supplied with an insulation plug drilled with the necessary holes.

*Use insert code when ordering a Jofra standard insert together with the CTC calibrator

Undrilled Inserts

All undrilled inserts include insulation plugs.

*Use insert code when ordering a Jofra standard undrilled insert together with the CTC calibrator

Options & Accessories:

Standard Delivery – Model A and C Includes:

• CTC dry-block calibrator (user specified)
• Mains power cable (user specified)
• Traceable certificate – temperature performance
• Tool for insertion tubes
• USB cable
• JofraCal calibration software
• User manual

Accessories:

We supply a free of charge traceable calibration and certification with the purchase of a new CTC-350 dry-block calibrator.

Contact us if you require any assistance with your choice of any Ametek Jofra calibrators and accessories.