CiDRA Use of Foundation Fieldbus Protocol with SONARtrac Transmitters User Manual
Page 15
Table 3 Transducer Block Configurations (Page 2)
PIPE_WALL_THICKNESS Float
R/W
Pipe wall thickness measurement in selected units.
PIPE_SIZE
Unsigned
Char
R/W
Selects pipe size. Will only be applied if 'Size /
Schedule' is selected for 'Pipe Diameter Input Mode'.
PIPE_SCHEDULE
Unsigned
Char
R/W
Selects pipe schedule. Will only be applied if 'Size /
Schedule' is selected for 'Pipe Diameter Input Mode'.
SOS_PIPE_WALL_THICKNESS_UNITS
Unsigned
Char
R/W
Selects units used for 'SOS Pipe Wall Thickness'.
SOS_PIPE_WALL_THICKNESS Float
R/W
SOS pipe wall thickness measurement in units selected
by 'SOS Pipe Wall Thickness Units'.
SOS_PIPE_MODULUS_SELECTION
Unsigned
Char
R/W
Selects either a pre-defined modulus* or the option to
enter a custom value. Select 'Custom' to enter a value
in 'SOS Pipe Modulus'.
SOS_PIPE_MODULUS Float
R/W
SOS pipe modulus value.
FLUID_PROPERTIES
FLOW_VISCOSITY Float
R/W
Viscosity in Pascal seconds of the fluid at the operating
conditions. Used for Reynolds correction.
SOS_GAS_CONSTANT_SELECTION
Unsigned
Char
R/W
Selects use of pre-defined SOS Gas Constant or a
custom value* entered in 'SOS Gas Constant'.
SOS_SPECFIC_GRAVITY_SELECTION
Unsigned
Char
R/W
Selects use of pre-defined SOS Specific Gravity or a
custom value* entered in 'SOS Specific Gravity'.
SOS_LIQUID_SOUND_SPEED_SELECTION
Unsigned
Char
R/W
Selects use of pre-defined SOS Liquid Sound Speed or
a custom value* entered in 'SOS Liquid Sound Speed'
SOS_GAS_CONSTANT Float
R/W
Gas constant value used in GVF calculation.
SOS_SPECIFIC_GRAVITY Float
R/W
This parameter (internally multiplied by 1000 kg/m^3) is
used to set the 'SOS Liquid Density'. For example*
Specific Gravity = 1.1 equates to density of 1.1 * 1000
kg/m^3
SOS_LIQUID_SOUND_SPEED Float
R/W
Pure phase liquid SOS for process fluid in ft/sec. Used
for GVF calculation. Default setting is for water* and is
close enough for most fluid/gas applications.
SOS_POLYTROPIC_EXPONENT Float
R/W
Polytrophic exponent in GVF calculations.
SOS_LIQUID_DENSITY Float
R
Calculated from 'SOS Specific Gravity'.
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