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∙VOLTAGE ADJUSTMENT PROCEDURE:
It is recommended that the
1.Use a white (copper) voltage connector and copper wire for all voltage and thermocouple inputs during calibration.
2.Locate the access hole for the Volt Gain adjustment on the bottom of the OM- 550.
GAIN ADJUST
Figure A-4
3.Apply a 2.00000 VDC standard voltage to channel #1.
4.Start logging and produce a printout, press RUN, YES on the keypad.
5.Adjust the Volt Gain pot for a CH #1 reading of 2.0000 V (±0.0001V).
6.Press the STOP key.
7.Proceed with the thermocouple adjustment.
∙THERMOCOUPLE ADJUSTMENT PROCEDURE:
1.Apply a 49.996mV (type K @ 2250 °F) standard voltage to channel #2.
2.Locate the access hole for the Temp Gain adjustment in the back cover.
3.Start logging and produce a printout, press RUN, YES on the keypad.
4.Adjust the Temp Gain pot for a channel #2 reading of +2250.0°F(±1°F).
5.Press the STOP key.
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