Emerson Micro Motion SGM Series - Page 74

Option Description Setup
Polling The meter polls an external de-
vice for % CO2 data.
a. Set % CO2 Source to Poll for External Value.
b. Set Polling Slot to an available slot.
c. Set Polling Control to Poll as Primary or Poll as Secondary.
d. Set External Device Tag to the HART tag of the % CO2 meas-
urement device.
Digital communica-
tions
A host writes % CO2 data to the
meter at appropriate intervals.
a. Set % CO2 Source to Fixed Value or Digital Communications.
b. Perform the necessary host programming and communica-
tions setup to write % CO2 data to the meter at appropriate
intervals.
Fixed value The configured fixed value is
used.
a. Set % CO2 Source to Fixed Value or Digital Communications.
b. Set % CO2 (Fixed) to the desired value, in % by volume.
5. Set % N2 Source to the method you will use to supply % N2 data, and perform the
required setup.
Option
Description Setup
Polling The meter polls an external de-
vice for % N2 data.
a. Set % N2 Source to Poll for External Value.
b. Set Polling Slot to an available slot.
c. Set Polling Control to Poll as Primary or Poll as Secondary.
d. Set External Device Tag to the HART tag of the % N2 meas-
urement device.
Digital communica-
tions
A host writes % N2 data to the
meter at appropriate intervals.
a. Set % N2 Source to Fixed Value or Digital Communications.
b. Perform the necessary host programming and communica-
tions setup to write % N2 data to the meter at appropriate
intervals.
Fixed value The configured fixed value is
used.
a. Set % N2 Source to Fixed Value or Digital Communications.
b. Set % N2 (Fixed) to the desired value, in % by volume.
6. Set % H2 Source to the method you will use to supply % H2 data, and perform the
required setup.
Option
Description Setup
Polling The meter polls an external de-
vice for % H2 data.
a. Set % H2 Source to Poll for External Value.
b. Set Polling Slot to an available slot.
a. Set Polling Control to Poll as Primary or Poll as Secondary.
b. Set External Device Tag to the HART tag of the % H2 meas-
urement device.
Digital communica-
tions
A host writes % H2 data to the
meter at appropriate intervals.
a. Set % H2 Source to Fixed Value or Digital Communications.
b. Perform the necessary host programming and communica-
tions setup to write % H2 data to the meter at appropriate
intervals.
Configure process measurement using ProLink III
66 Micro Motion
®
Gas Specific Gravity Meters (SGM)