Entering Pipe Data - GE DigitalFlow GF868 Programming Manual

Chapter 1. Programming Site Data

1.6.3 Entering Pipe Data

To program the transducer and pipe parameters via the
Figure 11 on page 87.
Channel PROGRAM
1. To enter the
prompt.
[F3] Channel PROGRAM
2. Press at the
3. Enter the Transducer Number (normally engraved on the head of the transducer). Press
engraved number, complete the steps below. Otherwise, proceed to step 4.
IMPORTANT:
Special transducers, which have no engraved number on the head, are rarely used. Examine the
transducer head carefully for a number.
1.6.3a Special Transducers
a. Assign a number between 91 and 99 to the Special Transducer and press
values from 1 to 199.)
b. Use the [ and
excitation voltage at the transducer's natural frequency without this data.
c. Enter the special transducer Time Delay (Tw) value supplied by the factory. Press
accept values from 0 to 1000 sec.)
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.
1.6.3b Pipe OD
4. Enter the known Pipe OD or circumference and use the
(The meter will accept values only from 1/8 to 648 in.)
inch = pipe OD in inches
in/PI = pipe circumference in inches
ft/PI = pipe circumference in feet
The required pipe data may be obtained by measuring either the pipe outside diameter (OD) or circumference at the
transducer installation site. Alternatively, the information may be obtained from tabulated data for standard pipe sizes.
12
menu, press
prompt.
[F1]-[F4]
keys to select the Frequency of the special transducer. The meter can not transmit an
Table 4: Available Pipe OD Units
English
feet = pipe OD in feet
PIPE
submenu, complete the following steps and refer to
[F1] or [F2]
(depending on the desired channel) at the
[F1]-[F4]
keys to select the appropriate units. Press
mm = pipe OD in millimeters
m = pipe OD in meters
mm/PI = pipe circumference in millimeters
m/PI = pipe circumference in meters
[ENT]
[ENT]
. (The meter will only accept
[ENT]
. (The meter will only
Metric
DigitalFlow™ GF868 Programming Manual (2-Channel)
User PROGRAM
. If there is no
[ENT].