March 2008
1-20
Programming Site Data
Setting Transducer Signal
Limits
Use this option to set the limits for the incoming signal and other
parameters affecting the transducer signal. For example, the
programmed signal strength low limit may be used to determine the
trigger point for an alarm. Table 1-5 on page 1-24 provides a
summary of signal upper and lower limits and default values.
Caution!
The SIGNL default settings are suitable for most
applications. Before changing any of these parameters,
consult the factory.
Complete the following steps to enter the signal parameters:
1.
Press
[ENT]
to accept the current
Signal Low Limit
value or enter a
new value and press
[ENT]
.
The default value for this parameter is 20 and values from –20 to 100
are acceptable. The
E1: LOW SIGNAL
error message appears when the
signal strength falls below the programmed
SIGNAL LOW LIMIT
value.
See the
Service Manual
for a discussion of error codes.
2.
Press
[ENT]
to accept the current
Cor. Peak Limit
value or enter a
new value and press
[ENT]
.
The default value for this parameter is 100 and values from 0 to 500
are acceptable. The
E4: SIGNAL QUALITY
error message appears when
the signal quality falls below the programmed
COR. PEAK LIMIT
value.
See the
Service Manual
for a discussion of error codes.
3.
Press
[ENT]
to accept the current
Soun– Limit
value or
enter a new value and press
[ENT]
.
The default value for this parameter is 20% and values from 1% to
50% are acceptable. The
E2: SOUNDSPEED
error message appears
when the calculated fluid soundspeed differs from the fluid
soundspeed entered in the
SYSTEM
menu by more than the
programmed
SOUN– LIMIT
value. See the
Service Manual
for
a discussion of error codes.
4.
Press
[ENT]
to accept the current
Velocity Low Limit
value or enter
a new value and press
[ENT]
.
The default value for this parameter is –275.0 ft/sec (-85 m/sec) and
values from –500 to 500 ft/sec (–150 to 150 m/sec) are acceptable.
The
E3: VELOCITY RANGE
error message appears when the calculated
fluid velocity is less than the programmed
VELOCITY LOW LIMIT
value.
See the
Service Manual
for a discussion of error codes.
Summary of Contents for DigitalFlow GS868
Page 7: ...Chapter 1 ...
Page 59: ...Chapter 2 ...
Page 77: ...Chapter 3 ...
Page 90: ...Chapter 4 ...
Page 104: ...Chapter 5 ...
Page 110: ...Chapter 6 ...
Page 122: ...Appendix A ...
Page 131: ...Appendix B ...
Page 132: ...Data Records Option Cards Installed B 1 Initial Setup Data B 2 ...
Page 136: ...Appendix C ...
Page 156: ...Appendix D ...