8
ULTRA-E-F
The ULTRA-E-F 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 ULTRA-E-F 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 ULTRA-E-F flow meter via the meter
keypad.
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 ULTRA-E-F 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 ULTRA-E-F will calculate proper transducer spacing
for the particular data set. This distance will be in inches if the ULTRA-E-F is configured in
English units, or millimeters if configured in metric units.
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.