Omega 24 - Manual (Page 38)

32. Press the SENSOR SELECT function button. The sensor type will change
to type C. A "C" will appear momentarily in the center of the display.
"600.0" will then appear in the center of the display and both the "T" and
"R" will appear along the top row of the display.
33. Press the CHANGE function button. The "600.0 °F" display will blink, and
"NUM" will appear on the display.
34. Press 3 2 0 buttons and then press ENTER function button. "NUM" will dis-
appear and "32.0 °F" will appear, not blinking. The voltmeter should read
0.000 mV.
35. Press the SENSOR SELECT function button. The sensor type will change
to type D. A "d" will appear momentarily in the center of the display. "32.0"
will then appear in the center of the display and both the "T" and "R" will
appear along the top row of the display. The voltmeter should read 0.000 mV.
36. Press the SENSOR SELECT function button. The sensor type will change
to type K. The "T" and the "R" will disappear from the display and a "K" will
appear on the display. The voltmeter should read 0.000 mV.
37. Select the meter mode by pressing the CALIB/METER function button.
38. Output the voltages from table 1 into the U.U.T. from the thermocouple
simulator, changing the thermocouple type on the U.U.T. as noted in the
table. Observe the correct readings on the display of the U.U.T.
39. Select the calibrator mode by pressing the CALIB/METER function button and
type “K” thermocouple by pressing the sensor/select button. The voltmeter
should read 0.000mV.
40.Press the OFF function button. The unit will turn off.
41. Press the ON function button. The unit will power up and return to the cali-
brator mode. "CALIB" will appear on the display along with the "K" enunciator,
the "OPR" enunciator, and "32.0 °F" will be displayed. The blinking
"Ω" symbol will have completely disappeared indicating that you have exited
the copper mode.
42. Remove the Copper Mode Calibrator Verification Cable from both the volt-
meter and the OMEGA UUT.
43. The copper mode verification is now complete. Press the OFF function but-
ton to turn the unit off.
ALLOY MODE VERIFICATION PROCEDURE FOR THERMOCOUPLE
FUNCTIONS
Equipment Required:
1. OMEGA Model to be verified.
2. Precision temperature simulator / voltage source.
3. Voltmeter accurate to 1 uV resolution.
4. Cable assembly.
1. Start your calibration with a fresh battery.
2. Press the ON function button to turn the unit on.
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