JOFRA RTC-Series – Reference Temperature Calibrator

AMETEK continues to develop new techniques to improve performance, accuracy, convenience and functionality of the well-known JOFRA calibration products. By doing so, we maintain our position as one of the leading worldwide manufacturers of temperature dry-block calibrators.

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We are proud to introduce our new top model RTC series (Reference Temperature Calibrator) with RTC-156, RTC-157, and RTC-700, which all are no exception to the above and even more sophisticated than any existing calibrator on the market.

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The new RTC series comes in three different models ‰ÛÒ A, B, and C

– RTC-A reference temperature calibrator

– RTC-B reference temperature calibrator with input for reference sensor, DLC sensor and sensor-under-test

– RTC-C reference temperature calibrator with input for reference sensor and DLC sensor

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Features for the RTC series

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High accuracy

RTC-156/157 ‰ÛÒ Up to ±0.04°C using the external reference sensor

RTC-700 ‰ÛÒ Up to ±0.11°C using the external reference sensor

4-wire True-Ohm-Measurement technology is used

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Excellent stability

RTC-156/157 ‰ÛÒ 0.005°C

RTC-700 ‰ÛÒ 0.008°C

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Wide temperature range

RTC-156: -30 to 155°C (-22 to 311°F)

RTC-157: -45 to 155°C (-49 to 311°F)

RTC-700: 33 to 700°C (91 to 1292°F)

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Improved temperature homogeneity

Unique active dual-zone (RTC-156/157) or triple-zone (RTC-700) block ensures good temperature homogeneity in the calibration zone.

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DLC ‰ÛÒ Dynamic Load CompensationåÊåÊåÊåÊåÊåÊåÊåÊ PATENT PENDING!

Perfect temperature uniformity in the insert, even when calibrating large sensors or many sensors at a time.

B and C models only.

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Display indicator for temperature uniformity

Shows the degree of temperature uniformity in the insert when using the new DLC technology.

B and C models only.

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Intelligent reference sensors

JOFRA reference sensors are supplied with intelligent plugs, holding the calibration data (coefficients) of the reference sensor.

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USB communication

All RTC calibrators communicate via an USB port.

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Time-saving

High speed heating and cooling times.

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EURAMET

Best performing dry-block with regard to the EURAMET/cg-13/v.01 guideline for testing of dry-blocks.

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Unique temperature performance

The RTC series provides precision temperature calibration of sensors, whatever the type or format. This is accomplished through an innovative active dual-/triple-zone heating technology.

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The RTC-156/157 features our well-known dual-zone heating technology and the RTC-700 features our new triple-zone technology.

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Each heating zone is independently controlled for precision temperature calibration. The homogeneity in the lower part is close to that of a laboratory liquid bath. The lower zone ensures optimum heat dissipation throughout the entire calibration zone. The upper zone compensates for heat loss from the sensor-under-test and from the open top. This design eliminates the need for extra insulation of the sensor-under-test and makes it possible to calibrate liquid filled and other mechanical sensors.

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DLC ‰ÛÒ Dynamic Load CompensationåÊåÊåÊåÊåÊåÊåÊåÊ PATENT PENDING!

To bring our well documented dual-/triple-zone heating technology to an even higher level, we have developed the patent pending new DLC system.

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This unique feature makes it possible to perform top calibration specifications without be affected by the actual load e.g. many sensors of very large sensors.

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A new DLC sensor has been specially developed for this purpose.

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The RTC features the active dual-/triple-zone temperature control which improves the homogeneity in the well by adjusting the temperature in the top of the well to the same temperature as in the bottom. The dual-/triple-zone keep this difference to a minimum,

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The new DLC sensor improves the homogeneity even more by controlling the homogeneity not only in the well, but also inside the insert, where the sensor-under-test is placed during calibration. The DLC measures the temperature homogeneity in the insert and provides feedback to the active dual-/triple-zone system, which now compensates the temperature difference to a minimum inside the insert. In this way, the DLC system makes the homogeneity independent of the different loads of the insert.

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Based on the new DLC functionality, the RTC series is the best performing dry-block calibrator on the market, when being calibrated and tested accordingly to the globally accepted EURAMET/cg-13/v.01 guideline for calibration and testing of dry-blocks.

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The DLC system comprises a special differential temperature sensor designed especially for the RTC series. The sensor is placed in the insert and connected to the calibrator. When the DLC function is enabled, the calibrator will automatically equalize the temperature homogeneity inside the insert on top of the normal temperature control and stabilization.

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