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 3 models covering temperature ranges -23 to +155¢ªC (ITC-155), +33 to +320¢ªC (ITC-320) and +33 to +650¢ªC (ITC-650).

The JOFRA ITC Series offers exceptional price/performance. It features a state of the art dual-zone heating block and MVI circuitry adapted from AMETEK¡¯s premium ATC range of temperature professional 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¢ªC to +0.01¢ªC, for the ITC-155 and from +0.03¢ªC to +0.02¢ªC 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¢ªC across the instrument range as measured over a twelve month period using the built-in internal reference detection. Radial homogeneity is now +0.02¢ªC for the ITC-155 compared to the previous value of +0.03¢ªC while the specification for the ITC-320 has improved from +0.07¢ªC to +0.04¢ªC.

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