GE AquaTrans AT868 User Manual page 80

September 2004
Displaying Diagnostic
Parameters (cont.)
Option Bar
Displays the signal strength for the
SS up
upstream transducer.
Displays the signal strength for the
SS dn
downstream transducer.
Displays the measured speed of sound in
SNDSP
the fluid.
Displays the upstream ultrasonic signal
Tup
transit time.
Displays the downstream ultrasonic signal
Tdown
transit time.
Displays the transit time difference
DELTA
between the upstream and downstream
signals.
REYN#
Displays the Reynolds number.
K(RE)
K factor, based on the Reynolds number.
Displays the percentage of peak (set to
PEAK%
+50 by default).
Theta 3 is the angle between the ultrasonic
beam and the normal to the pipe wall. It is
THETA
calculated from the measured transit time
and the clamp-on parameters (clamp-ons
only).
Displays the signal quality for the
Qup
upstream transducer.
Displays the signal quality for the
Qdown
downstream transducer.
Displays the value for the signal
AMPup
amplitude of the upstream transducer.
Displays the value for the signal
AMPdn
amplitude of the downstream transducer.
Displays signal peaks for the upstream
P#up
transducer.
Displays signal peaks for the downstream
P#dn
transducer.
6-2
Note: The measurement units that appear in these prompts are those
selected in the GLOBL-SYSTM menu as described in Chapter 2,
Programming Site Data.
The previous two prompts repeat until all of the specified # of LCD
PARAMS have been set up. Go to Procedure Options on page 6-3.
Table 6-1: Available Diagnostic Parameters
Description Good Bad
50–75 <50 or >75
50–75 <50 or >75
N.A. N.A.
N.A. N.A.
N.A. N.A.
≤1 µsec
>1 µsec
N.A. N.A.
N.A. N.A.
N.A. N.A.
≥ 1200
–400 to +400
≥ 1200
–400 to +400
24 ± 5 <19 or >29
24 ± 5 <19 or >29
<100 or
100-2300
>2300
<100 or
100-2300
>2300
Diagnostics