Emerson Rosemount Oxymitter DR Reference Manual page 37

Reference Manual
00809-0100-4884
3. Set voltmeter to read DC millivolts (mV).
4. Attach voltmeter with positive (+) lead on TP1 and negative (-) on either Pin 2 or 7.
5. Adjust potentiometer M110-1 to read 322.3 millivolts nominal.
6. Remove voltmeter leads.
7. Remove jumper wire.
2.4.2 Set up Westinghouse Model 218A electronics
Before beginning operation, it is important to change the probe heater setpoint of the
existing electronics to support the Rosemount
Rosemount Oxymitter DR
Figure 2-13: Temperature Controller Card Calibration Points
Note
The voltage given above is for an ambient (machinery space) temperature of 77 °F
(25 °C). For each degree of ambient temperature above or below 77 °F (25 °C), add
or subract 0.242 mV from the nominal. Example: AT 87 °F (31 °C), the nominal
voltage of -322.3 mV should be increased (made less negative) by 10 x 0.242 or
2.42 mV, making the adjusted nominal -319.9 mV.
™
Oxymitter DR probe. To convert the
Install
April 2022
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