Initial Setup 2-9
August 2008
Entering the Signal Path
Parameters (cont.)
The prompts available in the Path option depend on whether you
have selected clamp-on or wetted transducers in the Transducer
option. Proceed to the appropriate section for your transducer type.
Clamp-On Transducers 1. At the “Traverses” prompt, press [ENTER] to open the drop-down
list. Scroll to the number of traverses for your installation and
press [ENTER] to confirm the selection.
Note: The number of traverses is the number of times the ultrasonic
signal crosses the pipe before being received.
2. The next prompt displays the “Spacing” of the transducers, as
calculated from the information previously entered. Record this
number and use it to space your transducers during installation.
IMPORTANT: It is recommended that you always use the spacing
calculated by the PT878. Only override this value if
instructed to do so by GE Sensing.
3. To return to Operate Mode, press
[F3] (OK) to confirm your entries
or press [F2] (Cancel) to cancel your entries.
Wetted Transducers 1. At the “Path Length” prompt, use the numeric keys to enter the
path length (P) value provided by GE Sensing and press [ENTER] to
confirm the value.
2. At the “Axial Length” prompt, use the numeric keys to enter the
axial length (L) value provided by GE Sensing and press
[ENTER]
to confirm the value.
3. To return to Operate Mode, press [F3] (OK) to confirm your entries
or press [F2] (Cancel) to cancel your entries.
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