Dynasonics TFXP Series Transit Time Ultrasonic Flow Meter - Manual (Page 82)

Rev. 5/09
-4.4- TFXP
Transducer Mount selects the orientation of the transducers on the
piping system. See Part 2 of this manual and Table 2.2 on page
2.5 for detailed information regarding mounting modes for particular
pipe and liquid characteristics. Whenever Transducer Mount is
changed, a download command and subsequent microprocessor
reset or flow meter power cycle must be conducted.
Transducer Spacing is a value calculated by the TFX flow
meter that takes into account pipe, liquid, transducer and mounting
information. This spacing will adapt as these parameters are modified.
The spacing is given in inches for English units selection and
millimeters for Metric. This value is the lineal distance that must be
between the transducer spacing marks. (See Figure 2.3 on page
2.9.)
Pipe Material is selected from the pull-down list. If the pipe material
utilized is not located on the list, select Other and enter pipe
material sound speed (much of this information is available via
websites such as www.ultrasonic.com) and relative roughness (the
RMS value of the internal surface regularities/the pipe internal
diameter) of the pipe.
Pipe O.D. and Wall Thickness are based on the physical
dimensions of the pipe on which the transducers will be mounted.
Enter this value in inches for English units or millimeters for Metric
units.
Liner Material is selected from the pull-down list. If the pipe liner
material utilized is not located on the list, select Other and enter
liner material sound speed (much of this information is available at
websites such as www.ultrasonic.com) and relative roughness (the
RMS value of the internal surface regularities/the pipe internal
diameter) of the pipe liner.
Fluid Type is selected from the pull-down list. If the liquid is not
located on the list, select Other and enter the liquid sound speed
and viscosity into the appropriate boxes. Liquid Specific Gravity
is required if mass measurements are to be made, and Specific
Heat is required for energy measurements.
PART 4 - SOFTWARE UTILITIES