Ametek Calibration Instruments has announced that its range of JOFRA ITC dry block temperature calibrators now offers improved accuracy, stability and radial homogeneity (temperature variation between holes on the multi-hole inserts).

The JOFRA ITC range features three models covering temperature ranges -23 to 155˚C (ITC-155), 33 to 320˚C (ITC-320) and 33 to 650˚C (ITC-650).

The JOFRA ITC Series offers exceptional price/performance. It features dual-zone heating block and MVI circuitry adapted from Ametek’s premium ATC range of temperature calibrators.

The dual-zone heating block increases the temperature homogeneity in the critical calibration zone. This minimises the need to insulate sensors-under-test and makes it possible to calibrate liquid-filled and other mechanical sensors. MVI circuitry ensures stable temperatures even when the mains voltage is unstable.

The temperature stability has improved from +0.03˚C to +0.01˚C, for the ITC-155 and from +0.03˚C to +0.02˚C for the ITC-320. Measurements are made over a 30 minute period, after the instrument’s stability indicator has been on for 10 minutes.

Accuracy has improved by at least +0.05˚C across the instrument range as measured over a 12 month period using the built-in internal reference sensor. Radial homogeneity is now 0.02˚C for the ITC-155 compared to the previous value of 0.03˚C while the specification for the ITC-320 has improved from 0.07˚C to 0.04˚C.

The ITC series of dry block calibrators is slim and rugged and is suited to critical process control application. The calibrators are designed for both on-site and maintenance shop use.

JOFRA ITC