EES-401 Series Ultrasonic Energy Meter
Revision: 3.0.1
Page 48 of 90
Fluid Sound Velocity
Display the measured fluid sound velocity. Normally
this value should be approximately equal to the entered
value in Window M21. If the difference is too large, it
probably results from an incorrect value entered in
Window M21 or improper installation of the
transducers.
Total Time and Delta Time
Display the measured ultrasonic average time (unit: uS)
and delta time of the upstream and downstream (unit:
nS) time. The velocity calculation in the Energy Meter
is based on the two readings. The delta time is the
best indication that the instrument is running steadily.
Normally the fluctuation in the ratio of the delta time
should be lower than 20%. If it is not, it is necessary to
check if the transducers are installed properly or if the
parameters have been entered correctly.
Reynolds Number and Factor
Display the Reynolds number that is calculated by the
Energy Meter and the factor that is set currently by the
Energy Meter. Normally this scaling factor is the
average of the line and surface velocity factor inside the
pipe.
Installation spacing correction Options
The following options are available:
0.
OFF
Turn off Installation spacing correction
1.
ON
Turn on Installation spacing correction
Flow sensor setup
( Transducer Mounting Position
Selection )
The following options are available:
0.
Infall
1.
Outfall
Fluid Sound Velocity
1443.4 m/s
Totl Time Delta Time
193.00uS -2.09nS
Reynolds Number [94
0.0000
1.0000
Spacing Correction
OFF
Flow Senser Set UP
0. Infall