Entering Transducer And Pipe Parameters; Special Transducers - GE DigitalFlow XGS868i Programming Manual

Chapter 1. Programming Site Data

1.6 Entering Transducer and Pipe Parameters

Enter the transducer and pipe parameters via the
Figure 28 on page 77.
1. From the Channel PROGRAM menu, scroll to the PIPE option and press [Enter].
2. The first prompt asks for the Transducer Number.
•
For a standard transducer, use the arrow keys to enter the number engraved on the transducer head, and press
[Enter].
•
If there is no number engraved on the transducer head, press the right arrow key to scroll to the STD option, and
use the up and down arrow keys to change to SPEC. Then use the arrow keys to enter an assigned number (from
91 to 99), and press [Enter].
IMPORTANT:
Special transducers have no engraved number on the head and are rarely used. Examine the transducer
head carefully for a number.
•
If you entered the number for a standard transducer, proceed to the Pipe OD prompt in step 5.
•
If you entered the number for a special transducer, proceed to step 3 below.

1.6.1 Special Transducers

Note: For special transducers, GE Measurement & Control will supply a transducer data sheet with programming
information.
3. Scroll to the transducer Frequency (supplied by the factory) and press [Enter].
Note: The frequency is required to transmit an excitation voltage at the transducer's natural frequency.
4. Enter the special transducer Tw (time delay) value (supplied by the factory) and press [Enter].
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.
8
PIPE
submenu. While following the programming instructions, see
DigitalFlow™ XGS868i Programming Manual