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Section 4
Page 91
Velocity-Only Sensor
Figure 39 Velocity-Only Sensor
4.12.1 Programming the Velocity-Only Sensor
1. From the MAIN MENU, select SETUP>MODIFY SELECTED ITEMS
2. Highlight Velocity Direction using the up and down arrow soft keys. Press
the
SELECT soft key to continue.
3. Set the velocity direction (upstream, downstream, or always positive)
using the
CHANGE CHOICE soft key. Refer to Compensating for Velocity
Direction on page 94 for more information on velocity direction.
4. Press the
ACCEPT soft key to continue.
5. Highlight Velocity Units using the up and down arrow soft keys. Press the
SELECT soft key to continue.
6. Set the Velocity Units (fps or m/s), using the up and down arrow soft keys.
Press the
ACCEPT soft key to continue.
7. Highlight Velocity Cutoff, using the up and down arrow soft keys. Press
SELECT to continue.
8. Read the Velocity Cutoff information screen. Press any key to continue.
9. Set the Velocity Cutoff using the numeric keypad. Press
ACCEPT soft key
to continue.
10. Set the Velocity Default, using the numeric keypad. Press the
ACCEPT
soft key. Press the RETURN soft key to go back to the Setup Menu or the
Main Menu key to return to the beginning.
4.12.2 Calibrating the Velocity-Only Sensor
No calibration is required for the velocity sensor. The transmit frequency is
fixed with a highly accurate quartz crystal-controlled frequency generator that
cannot be adjusted.
Velocity Measurement
Sound Waves
Velocity Sensor