Cidra Use of Foundation Fieldbus Protocol with SONARtrac Manual de usuario descargar pdf (Pagina 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'.

20958-01 Rev 02

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