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)
Содержание CDM100M
Страница 8: ...Getting Started 2 Micro Motion Compact Density Meters CDM ...
Страница 12: ...Before you begin 6 Micro Motion Compact Density Meters CDM ...
Страница 20: ...Configuration and commissioning 14 Micro Motion Compact Density Meters CDM ...
Страница 26: ...Introduction to configuration and commissioning 20 Micro Motion Compact Density Meters CDM ...
Страница 110: ...Integrate the meter with the control system 104 Micro Motion Compact Density Meters CDM ...
Страница 116: ...Operations maintenance and troubleshooting 110 Micro Motion Compact Density Meters CDM ...
Страница 124: ...Transmitter operation 118 Micro Motion Compact Density Meters CDM ...
Страница 194: ...Using the transmitter display 188 Micro Motion Compact Density Meters CDM ...
Страница 208: ...Using ProLink III with the transmitter 202 Micro Motion Compact Density Meters CDM ...
Страница 218: ...Concentration measurement matrices derived variables and process variables 212 Micro Motion Compact Density Meters CDM ...
Страница 219: ...Concentration measurement matrices derived variables and process variables Configuration and Use Manual 213 ...