Chapter 3. Diagnostics
3-3
DigitalFlow™ GC868 Service Manual (1 and 2-Channel)
Fpv
SuperC
Displays supercompressibility as
calculated by the NX19 equation
or custom table.
N.A.
N.A.
AcVOL
Act Vol. KACF/MIN
Displays actual volumetric flow.
N.A.
N.A.
StVOL
Std Vol. KSCF/MIN
Displays standard volumetric flow,
if
STANDARD
equation is used.
N.A.
N.A.
Tu S*
UP Transit S usec
Displays Skan Tup.
N.A.
N.A.
Td S*
DN Transit S usec
Displays Skan Tdn.
N.A.
N.A.
DT S*
DeltaT S usec
Displays Skan DELTA
N.A.
N.A.
Tu M*
UP Transit M usec
Displays Measure Tup
N.A.
N.A.
Td M*
DN Transit M usec
Displays Measure Tdn
N.A.
N.A.
DT M*
DeltaT M usec
Displays Measure Delta
N.A.
N.A.
ToffS*
Skan T Offset usec
Displays dynamically calculated
signal timing offset in the skan
signal measurement.
N.A.
N.A.
Vinst
Vinst. Ft/s
Displays the instantaneous
velocity for comparison with Vel
without averaging.
N.A.
N.A.
THETA
Theta 3 degrees
Displays the angle of the
ultrasonic signal inside the pipe.
N.A.
N.A.
CEE1
CEE1
Displays the speed of sound in the
transducer (clamp-on only).
N.A.
N.A.
SNRup
UP Signal/noise
Displays the signal/noise ratio for
the upstream transducer.
>7
<7
SNRdn
DN Signal/noise
Displays the signal/noise ratio for
the downstream transducer.
>7
<7
S-MDT
SkanDT-MeasDT
Displays the difference between
the Skan Delta T and Measure
Delta T values.
N.A.
N.A.
EXIT
Last parameter
Leave the Diagnostics Menu
N.A.
N.A.
* These options are available only in the Skan/Measure mode.
Table 3-1: Available Diagnostic Parameters
Option
Bar
Screen Display
Description
Good
Bad