Cold Junction Offset Calibration (C.j.of); Sec - Omega CN1001-TC User Manual

SECTION 19. COLD JUNCTION OFFSET CALIBRATION (C.J.OF)
The cold junction offset equals the actual temperature minus the reading temperature. You may
compensate for any error due to cold junction on the TC input. You may perform this
compensation in any temperature from 0°C to 40°C (or 32°F to 104°F), however we recommend
you perform this compensation at 0°C (32°F) for best result. To do this, immerse the
thermocouple hot junctions into a mixture of ice and water. Check the Reading Configuration bit
R.1 of the "RD.CF" menu setting for the proper temperature units.
TO PERFORM THIS COMPENSATION, FOLLOW THESE STEPS:
1. Connect the thermocouple wire to the (+) and (-) input.
2. Press the MENU button until meter displays "CJ.OF".
3. Press the
digit.
4. Press the
flashing).
5A. If the value is okay, then press the MENU button. The display will show "STRD" and 0
value will be entered at the offset.
B. If the value is not okay, then enter the actual temperature using the
buttons. Once you enter the accurate temperature, press the MENU button. The meter
displays "STRD" and stores the offset value.
1. Temperature unit is either celsius or fahrenheit and will always be displayed at 0.1
degree resolution. The meter flashes corresponding LED.
2. MAX/MIN offset value will be ±25.0 °C or 45.0 °F. If offset the limit, the meter will
flash "ER 3" and previous offset will not be changed.
/DEV button. the meter displays the previous offset value with flashing 4th
/DEV button again. The reading temperature will be displayed (with no digit
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/DEV and /MAX