GE DigitalFlow XGS868i, Programming Manual

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Appendix C. Programming the XGS868i Using PanaView™
108 DigitalFlow™ XGS868i Programming Manual
After responding to the above prompt, the meter returns to the
SET UP
option window.
C.5.5b The Default Setup Option
Use this option to initialize (reset) all of the parameters within the
Set Up
Signal
menu back to their default values.
Complete the following steps to reset all of the parameters:
1. From the
Set Up
option menu, highlight and double-click on Default Setup in the center pane.
2. Double-click on No to keep the current values or on Yes to reset all values to their default settings.
After responding to the above prompt, the meter returns to the
Set Up
option window.
C.5.5c The V Averaging Option
Use this option to specify the number of readings that occur before the meter will respond to a step change in flow rate.
In general, the smaller the number of readings, the less steady the display will appear. Complete the following steps to
set the response time:
1. From the
Set Up
option menu, highlight and double-click on V Averaging in the center pane.
2. Double-click on the desired Response Time (from 1 to 60 sec).
For best results, select the
STATS
(statistics) option, as this increases the response time under steady flow conditions
while still allowing a rapid response to changes in flow rate.
After responding to the above prompt, the meter returns to the
Set Up
option window.
M>S Switch 0 to 250 μ sec 50 μ sec
If the burst mode is set to Skan/Measure (S/M), the meter switches from
Skan to Measure Mode when Delta T is less than the M>S_Switch value.
DO NOT change this value unless advised to do so by the factory.
# Shifts 0 to 10 3
The number of shifts corresponds to the actual number of transmits per
cycle (number of signals added together in one direction to produce an
averaged signal for one interrogation of the fluid) and need only be
changed if the environment is very noisy or the acoustic signal is weak.
A Divisor 0.1 to 10 2.5
A Divisor is used to calculate the Measure Mode integrated threshold
level and is not normally changed.
# Transmit
Pulses
1 to 16 4
# Transmit Pulses specifies the number of pulses in a burst. For difficult
conditions (i.e. long paths, high velocity or high temperature), settings as
high as 16 may be necessary.
T Window
(cycles)
0 to 1000 0
The XGS868i calculates the size of the transmit window based on pipe
size and fluid sound speed. However, for diagnostic purposes, the
window size may be reset.
R Window
(cycles)
10 to 128 10
The XGS868i calculates the size of the receive window based on pipe
size and fluid soundspeed. However, for diagnostic purposes, the
window size may be reset.
Table 20: Transducer Signal Settings (cont.)
Transducer
Signal
Parameters Range
Default
Value Description