User`s manual

December 2003
10-6 Diagnosis and Troubleshooting
Table 10-2: Diagnostic Parameters
Diagnostic
Parameter
Displays Good Bad
SS up
Displays the signal strength for
the upstream transducer.
50-80 <50
SS do
Displays the signal strength for
the downstream transducer.
50-80 <50
SNDSP
Displays the measured sound
speed of the fluid.
Check the sound speed
of fluid in Sound
Speeds and Pipe Size
Data.
Tup
Displays the upstream transit
time of the ultrasonic signal in
micro seconds.
N/A N/A
Tdown
Displays the downstream transit
time of the ultrasonic signal in
micro seconds.
N/A N/A
DELTA
Displays Delta T, or the differ-
ence between the upstream and
downstream transit times.
N/A Continu-
ous large
fluctua-
tions of 1
micro sec-
ond or
more.
REYN#
Displays the Reynolds Number. N/A N/A
K(RE)
Displays the K Factor, based on
the Reynolds Number.
N/A N/A
PEAK%
Displays the Percent of Peak. Set
to -40 by default. To change see
Section 3, page 3-39.
N/A N/A
THETA
Displays the THETA 3 angle,
calculated from the measured
transit time and the clamp-on
parameters. THETA 3 is the
angle between the ultrasonic
beam and the normal to the pipe
wall (clamp-ons only).
N/A N/A
Qup
Displays the signal quality for
the upstream transducer.
±300 or
higher
between
±100
Qdown
Displays the signal quality for
the downstream transducer.
±300 or
higher
between
±100