Emerson Micro Motion SGM - Page 24

Table 4-2: Derived variables (continued)
Variable Default 4 mA Default 20 mA
External pressure 0.000 PSIg 1450.377 PSIg
Line density 0 g/cm3 0.4 g/cm3
User-defined calculation output 0 100
%CO
2
0 % 100.00 %
%N
2
0 % 100.00 %
%H
2
0 % 100.00 %
%CO 0 % 100.00 %
Table 4-3: Concentration measurement enabled
Variable Default 4 mA Default 20 mA
Gas purity concentration for curve 1 00.00 % 100.00 %
Gas purity concentration for curve 2 00.00 % 100.00 %
Gas purity concentration for curve 3 00.00 % 100.00 %
Gas purity concentration for curve 4 00.00 % 100.000 %
Table 4-4: Flow input enabled
Variable Default 4 mA Default 20 mA
Mass flow rate (calculated) -200.00 g/sec 200.00 g/sec
Mass flow rate (external) -200.00 g/sec 200.00 g/sec
Volume flow rate (calculated) -0.42378 SCFM 0.42378 SCFM
Volume flow rate (external) -0.2 l/sec 0.2 l/sec
Table 4-5: SGM default variables
Default variable Output option A Output options B and C
Primary Variable (PV), mA1 Sample Temperature • Specific Gravity for Calibration Set 1
• Molecular Weight for Calibration Set 1
• Relative Density
Secondary Variable (SV), mA2 Time Period B Sample Temperature
Tertiary Variable (TV) • Specific Gravity for
Calibration Set 1
• Molecular Weight for
Calibration Set 1
• Relative Density
Sensor Time Period
Quaternary Variable (QV) Drive Gain Drive Gain
Introduction to configuration and commissioning Configuration and Use Manual
March 2021 MMI-20020954
24 Micro Motion Gas Specific Gravity Meters (SGM)