GE DigitalFlow DF868 Programming Manual page 44

March 2008
SETUP Limits and Default
Values
1-36
Table 1-14: Default Values and Limits for SETUP Parameters
Default
Parameter
Transit-Time Parameters
Signal Low Limit
Cor. Peak Limit
Soundspeed ±
Limit
Velocity Low Limit -40.0 ft/sec
(-12.142 m/
Velocity High Limit -40.0 ft/sec
(-12.142 m/
Acceleration Limit
15.0 ft/sec
(4.6 m/sec
Amp. Discrim Low
Amp. Discrim High
Delta T Offset
% of Peak
XMIT Sample Size
# Errors Allowed
Minimum Peak %
Limit
Maximum Peak %
Limit
T Window
R Window
TransFlection
Signal Low Limit
Velocity Low Limit -40.0 ft/sec
(-12.142 m/
Velocity High Limit -40.0 ft/sec
(-12.142 m/
Rep Period 1 200 µsec
Rep Period 2 800 µsec
XMITS per
Reading
Value Low Limit
40 -20
100 0
20% 1%
-100 ft/sec
(-30.48 m/sec)
sec)
-100 ft/sec
(-30.48 m/sec)
sec)
0
2
2
)
14 0
34 0
0 -1,000 µsec
50% -100%
8 2
6 0
-100
-100
0 0
10 10
40 -20
-100 ft/sec
(-30.48 m/sec)
sec)
-100 ft/sec
(-30.48 m/sec)
sec)
100 µsec
100 µsec
5,000 1,024
Programming Site Data
High Limit
100
500
50%
+100 ft/sec
(+30.48
m/sec)
+100 ft/sec
(+30.48
m/sec)
2
100 ft/sec
2
(30 m/sec )
100
100
1,000 µsec
100%
32
16
+100
+100
1,000
128
100
+100 ft/sec
(+30.48
m/sec)
+100 ft/sec
(+30.48
m/sec)
3,200 µsec
3,200 µsec
30,000