GE PT878GC Manual De Usuario
April 2004
4-16
Programming Site Data
Path Parameters for Clamp-On Transducers
The PT878GC path menu includes two parameters for clamp-on
transducers:
transducers:
•
Traverses
•
Spacing
1. The PT878GC first prompts for traverses, the number of times
the ultrasonic signal crosses the pipe.
a. Press
[ENTER]
to open the drop-down list of traverse
numbers.
b. Scroll to the appropriate number.
c. Press
[ENTER]
to confirm the entry.
2. The next prompt displays the spacing of the transducers, as
calculated from the information entered.
a. Record this number and use it to space the transducers.
(Use Chapter 3 to assist in installing transducers on the
pipe.) Press the [T] key to scroll to the next parameter.
pipe.) Press the [T] key to scroll to the next parameter.
b. If necessary, you can overwrite the spacing to match the
actual physical spacing of the transducers. (Do not change
the spacing by more than ±10% from that calculated by the
meter.) Press
the spacing by more than ±10% from that calculated by the
meter.) Press
[ENTER]
. Use the numeric keys to enter the
desired value, and press
[ENTER]
to confirm the entry. If
you enter an invalid entry, the PT878GC rejects the entry
and displays an error message.
and displays an error message.
Note: GE Panametrics does not recommend using a spacing
other than the one calculated by the PT878GC.
After you enter the spacing, pressing the [
S
] key returns the
prompt to the Traverses box, and then to the Path tab at the top of
the screen.
the screen.
•
To confirm the entries and return to Operate mode, press
[F3]
(OK).
•
To leave the window without confirming the entries and return
to Operate mode, press
to Operate mode, press
[F2]
(Cancel) or the
[ESC]
key.