dynasonics TFX Ultra User Manual

Basic Menu (BSC) continued
Parameter Meaning Options Description
FLUID SS
Speed of sound in the
fluid
ENGLSH (fps)
METRIC (mps)
Allows adjustments to be made to the speed of sound entry for the liquid. If the UNITS
value was set to ENGLSH, the entry is in fps (feet per second). METRIC entries are made in
mps (meters per second).
If a fluid was chosen from the FL TYPE list, a nominal value for speed of sound in that media
will be automatically loaded. If the actual sound speed is known for the application fluid
and that value varies from the automatically loaded value, the value can be revised.
If OTHER was chosen as FL TYPE, a FLUID SS will need to be entered. A list of alternate
fluids and their associated sound speeds is located in the Appendix located at the back of
this manual.
Fluid sound speed may also be found using the Target DBg Data screen available in the
UltraLink software utility. See “Target Dbg Data Screen Definitions” on page63.
FLUID VI
Absolute viscosity of
the fluid
(Enter a numeric
value in centipoise)
Allows adjustments to be made to the absolute viscosity of the liquid in centipoise.
Ultrasonic transmitters use pipe size, viscosity and specific gravity to calculate Reynolds
numbers. Since the Reynolds number influences flow profile, the transmitter has to
compensate for the relatively high velocities at the pipe center during transitional or
laminar flow conditions. The entry of FLUID VI is used in the calculation of Reynolds and
the resultant compensation values.
If a fluid was chosen from the FL TYPE list, a nominal value for viscosity in that media will
be automatically loaded. If the actual viscosity is known for the application fluid and that
value varies from the automatically loaded value, the value can be revised.
If OTHER was chosen as FL TYPE, then a FLUID VI must also be entered. See “Fluid Properties”
on page115 for a list of alternate fluids and their associated viscosities.
SP
GRAVITY
Fluid specific gravity
(Enter a numeric
value)
Allows adjustments to be made to the specific gravity (density relative to water) of
the liquid.
As stated previously in the FLUID VI section, specific gravity is used in the Reynolds
correction algorithm. It is also used if mass flow measurement units are selected for rate
or total.
If a fluid was chosen from the FL TYPE list, a nominal value for specific gravity in that media
will be automatically loaded. If the actual specific gravity is known for the application fluid
and that value varies from the automatically loaded value, the value can be revised.
If OTHER was chosen as FL TYPE, a SP GRVTY may need to be entered if mass flows are to
be calculated. See “Specifications” on page108 for list of alternate fluids and their specific
gravities.
Conguration
Page 38 May 2016TTM-UM-00136-EN-06

dynasonics TFX Ultra Specifications

General

Brand	dynasonics
Model	TFX Ultra
Category	Measuring Instruments
Language	English