Omega 24, 27, 25, 26 manual

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 theSENSOR 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.

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