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Flow-X─ Function Reference
4-287
Flow-X General functions - fxSolartron_Liquid _C
fxSolartron_Liquid _C
Description
The function calculates the density from a frequency input signal provided by a Solartron 7835, 7845,
7846 or 7847 liquid densitometer and corrects it for temperature, pressure and velocity of sound
effects using US Customary units.
The function requires that the calibration constants are based on the following units:
Temperature
°
F
Pressure
psi
Density
g/cc
Compliance
The calculations are in accordance with documents:
78355010 'Solartron 7835, 7845, 7846 & 7847 Advanced Liquid Density Transducer
Manual', 2001
78355080, Rev. C, 'Micro Motion 7835, 7845, 7846 & 7847 Liquid Density Transducer',
October 2007
Function inputs and outputs
Function inputs
Remark
EU
Range
Default
Name
Optional tag name, tag description
and tag group
Periodic time
In microseconds
Equals 1000 divided by the
frequency in [Hz]
s
0..1e6
0
Line temperature
Used when temperature correction
is enabled
°F
-459.67..+100
0
Line pressure
Used when pressure correction is
enabled
psig
0..3000
0
Temperature correction
0: Disabled
1: Enabled
-
1
Pressure correction
0: Disabled
1: Enabled
-
1
VOS correction
0: Disabled
1: Based on Kr / Kj Constants
Solartron manual edition
1985
2: Based on VOS value
Solartron manual edition
1996 and later
-
2
Reference temperature
Used when temperature correction
is enabled
°F
0..200
60
Reference pressure
Used when pressure correction is
enabled
psig
0..1500
0
K0
Constant from calibration certificate
-
-1e9..1e9
K1
Constant from calibration certificate
-
-1e9..1e9
K2
Constant from calibration certificate
-
-1e9..1e9
K18
Constant from calibration certificate
-
-1e9..1e9
K19
Constant from calibration certificate
-
-1e9..1e9
K20A
Constant from calibration certificate
-
-1e9..1e9
K20B
Constant from calibration certificate
-
-1e9..1e9
K21A
Constant from calibration certificate
-
-1e9..1e9
K21B
Constant from calibration certificate
-
-1e9..1e9
Kr
Used when VOS method is set to
-
Содержание flow-x
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