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.
37
