GE PT878GC ,

April 2004

4-16 Programming Site Data

The PT878GC path menu includes two parameters for clamp-on

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.

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 [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.

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 T raverses box, and then to the P ath tab at the top of

the screen.

•To confirm the entries and return to Operate mode, press [F3]

(OK).

•To leave the window with out confirming the entries and return

to Operate mode, press [F2] (Cancel) or the [ESC] key.