TF1100-EC/EI Manual
9
The TF1100 system calculates proper transducer spacing by utilizing piping and liquid
information entered by the user.
The following information is required before programming the instrument. Note that much
of the data relating to material sound speed, viscosity and specific gravity are
preprogrammed into the TF1100 flow meter. This data only needs to be modified if it is
known that a particular liquid data varies from the reference value. Refer to Part 3 of this
manual for instructions on entering configuration data into the TF1100 flow meter via the
meter keypad. Transducer mounting configuration. See Table 2.2
1.
Pipe Outer Diameter)
2.
Pipe wall thickness
3.
Pipe material
4.
Pipe sound speed
5.
Pipe relative roughness
6.
Pipe line thickness
7.
Pipe line material
8.
Pipe line sound speed
9.
Fluid type
10.
Fluid sound speed
Nominal values for these parameters are included within the TF1100 operating system. The
nominal values may be used as they appear or may be modified if exact system values are
known.
After entering the data listed above, the TF1100 will calculate proper transducer spacing for
the particular data set. This distance will be in inches if the TF1100 is configured in
English units, or millimeters if configured in metric units.
2.4 TRANSDUCER MOUNTING
After selecting an optimum mounting location and successfully determining the proper
transducer spacing, the transducers may now be mounted onto the pipe.
The transducers must be properly oriented on the pipe to provide optimum reliability and
performance. On horizontal pipes, the transducers should be mounted 180 radial degrees
from one another and at least 45 degrees from the top-dead-center and bottom-dead-center
of the pipe. See Figure 2.1. Figure 2.1 does not apply to vertically oriented pipes.
