Micro Motion CDM100M, Configuration And Use Manual

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User-defined calculation 3 (quartic) Equation 9-3:
y = A + B ×
(
ρ
B
ρ
W
)
+ C ×
(
ρ
B
ρ
W
)
2
+ E ×
(
ρ
B
ρ
W
)
3
+ F ×
(
ρ
B
ρ
W
)
4
A, B, C, E, F
User-programmable constants
⍴
W
Density of water at reference temperature and reference pressure, user-
programmable
⍴
B
Referred density from the concentration measurement application
y
Result of calculation
9.7.2 Measurement units used in user-defined calculations
The meter's internal measurement units are used for all process variables referenced by a
user-defined calculation. All constants must be entered in the internal measurement units
or derived using the internal measurement units.
Process variables and internal measurement units Table 9-1:
Process variable Internal measurement unit
Density g/cm
³
Referred Density g/cm ³
Velocity m/sec
Line Temperature °C
Case Temperature °C
External Temperature °C
Board Temperature °C
Tube-Case Temperature Difference °C
Drive Gain %
Concentration %
Line Pressure Bar g
Sensor Time Period Microseconds
Specific Gravity (concentration measurement) Unitless
Measurement support
134 Micro Motion ® Compact Density Meters (CDM)