Omega 24 - Manual (Page 15)

METER: (unit functioning as a thermometer)
K: (K-type thermocouple)
°F: (Fahrenheit readings)
OPR: (Instrument is operational)
If no input thermocouple is connected to the unit at this time, the numeric
segments will indicate "OPEN".
Plugging a thermocouple into the meter jack (connector T2, on the top right
side) will give actual thermocouple temperature readings.
NOTE: To obtain full accuracy, allow 1-2 minutes after connect-
ing a thermocouple plug, for thermal setting.
If the instrument is to be used as a thermometer or ohmmeter, refer to the
Meter Mode Operation section for detailed instructions. For use as a tem-
perature-calibrator or ohms simulator, refer to Calibrator Mode Operation
3. METER MODE OPERATION (Thermocouples)
Set-Up:
1. Turn on instrument by depressing the ON/OFF key.
2. Check that the BAT annunciator turns off following the power-up LCD test.
If it does not turn off, less than 10% of battery remains. Refer to Battery
Installation/Replacement instructions.
3. If the meter is already in the METER mode, the METER annunciator will
be on. Otherwise the calibrator mode is enabled and the CALIB annunciator is on. Depress
the METER key to return to meter mode.
4. Connect an input thermocouple (TC) to connector T2. Select the appropriate TC Type with
the select-key. A display annunciator will indicate the selected TC-type.
NOTE: Space and legibility constraints on the display preclude the use of dedicated
annunciators for the less common Tungsten-Rhenium thermocouple types (G, C & D).
Instead, these types are annunciated momentarily on the alpha-numeric display when
first selected. Both T and R annunciators remain on to indicate a Tungsten-Rhenium
selection. To recall the actual G, C, D selection, turn the unit off, then on again for
another momentary readout.
5. Select temperature scale with °F/°C key. The corresponding annunciator is enabled.
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