March 2008
1-16 Programming Site Data
Entering Pipe Data Enter the transducer and pipe parameters via the PIPE submenu. While
following the programming instructions, see Figure A-1 on page A-1
or Figure A-2 on page A-2
1. To enter the
Channel PROGRAM menu, press [F1] or [F2] (depending
on the desired channel) at the User Program prompt.
2. Enter the
PIPE submenu by pressing [F3] at the Channel PROGRAM
prompt.
Transducer Number 3. Enter the Transducer Number engraved on the head of the
transducer and press
[ENT]. If there is no engraved number,
complete the steps below. Otherwise, proceed to step 3 on the next
page for a clamp-on transducer, or to step 4 for a wetted
transducer.
IMPORTANT: Special transducers, which have no engraved
number on the head, are rarely used. Examine the
transducer head carefully for a number.
a. Assign a number between 91 and 99 to the Special Transducer
and press
[ENT]. (The meter will only accept values from 1 to
199.)
b. Use the
[F1]-[F3] keys to select the Wedge Type. Three choices
are available: Rayleigh or Shear wave (for clamp-on
transducers) or wetted transducers.
c. Use the
[F1]-[F3] keys to select the Frequency of the special
transducer.
IMPORTANT: The frequency is required to transmit an excitation
voltage at the transducer’s natural frequency.
d. Enter the special transducer Time Delay (Tw) value supplied by
the factory and press
[ENT].
Note: Tw is the time required for the transducer signal to travel
through the transducer and its cable. This time delay must be
subtracted from the transit times of the upstream and
downstream transducers to ensure an accurate measurement.
If you have selected a special wetted transducer, the meter now
rejoins the standard programming sequence. However, if you have
selected a special clamp-on transducer, two additional prompts
appear.
e. Use the numeric keys to enter the Wedge Angle (the angle of
the ultrasonic transmission) in degrees and press
[ENT].
Note: In TransFlection mode, you must enter a separate wedge
angle for both the transmit transducer and the receive
transducer.
f. Use the numeric keys to enter the Wedge Soundspeed in ft/sec
or m/sec and press
[ENT].
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