TTFM 6.1 INSTRUCTION MANUAL
10
Status (cont.)
Exp. SOS
Displays the expected fluid speed of sound
measurement, in units that match the Velocity. The
expected speed of sound is based on the pipe, fluid,
and temperature selection in the Setup menu.
Meas. SOS
Displays the measured fluid speed of sound, in units
that match Exp. SOS. The meter calculates this value
based on the time it takes for the signal to arrive from
one transducer to another. Large differences between
expected and measured speed of sound (> 10%)
typically indicate an error in the setup of the
instrument. Verify the following are correct in the
Setup menu and with the physical installation of the
transducers:
- Pipe Material
- Pipe OD
- Pipe Wall Thickness
- Liner Type
- Liner Thickness
- Fluid Type
- Fluid Temperature
- Crossings
- Separation Distance
--Status------------
Velocity
ft/s
0.00
Flow
0.00 USG/m
Min Flow
4.00 USG/m
Signal Strength 100%
Exp. SOS
4900 ft/s
Meas. SOS
4900 ft/s
