Omega 27 Manuale Utente

3. Select the calibrator mode (“CALIB” on display) by pressing the

CALIB/METER function button.

4. Select type K thermocouple (“K” on display) by pressing the SENSOR

SELECT function button until type K is reached.

5. Select the tenth degree display with a digit appearing after the decimal

point on the display) by pressing the 0.0.1 function button.

6. Select °F (“°F” on display) by pressing the °F °C function button.

7. Attach the

Alloy Mode Calibrator Verification Cables per Fig. 12 & 13. If

you are using a

Type K Thermocouple Temperature Simulator ITS-90

you will use the regular set up. If you are using a

Precision Voltage

Source use the alternate set up. When performing the following proce-
dure using a

Precision Voltage Source with the alternate set up, any-

where a temperature is transmitted (output) by the

Thermocouple

Temperature Simulator, you should adjust the Voltage Source to the
equivalent voltage as listed by a Type K N.I.S.T. ITS-90 Thermocouple
Reference Table. (Example: 32.0 °F would equal 0.000 mV)

8. Press the CHANGE function button and the numerical display will blink

and “NUM” will appear on the display.

9. Press 3 2 0 buttons and then press the ENTER function button. “NUM”

will disappear and “32.0 °F” will appear, not blinking.

10. Adjust the

Thermocouple Temperature Simulator to 32.0 °F.

00.

Note: The reading on the voltmeter should read null. 0.000 mV. Adjusting
the CL25 to any temperature and adjusting the Temperature Simulator to
the same temperature should result in a null, or 0.000 mV on the volt-
meter.

11. Remove the

Alloy Mode Calibrator Verification Cable from all equipment.

12. The Alloy Mode verification is now complete. Press the OFF function but-

ton to turn the unit off.