22
FDT-25
Handheld
Ultrasonic Flowmeter
M21
Window for entering the fluid sonic velocity only for non-standard liquids
M22
Window for entering the viscosity of the non-standard liquids
M23
Window
for
selecting
the
proper
transducers
There
are
14
different
types
of
transducers
for
selection.
If
the
user-type-transducers
are
used,
4
user
type
wedge
parameters,
which
will
be
prompted
by
the
software,
should
be
entered
following.
(See Transducer Selection Table on page 26)
M24
Window for selecting the transducer mounting methods
Four methods can be selected:
(0) V-method (1) Z-method (2) N-method (3) W-method
M25
Display the transducer mounting spacing
M26
Entry to store the parameter configuration into the internal NVRAM
M27
Entry to load one set of saved parameters
M28
Select YES or NO for the instrument to determine whether or not to hold (or to keep)
the last correct value when poor signal condition occurs. YES is the default setup
M29
Enter a value ranging from 000 to 999. 0 is the default value
M30
Window for selecting unit system. Default value is ‘Metric’. The change from English
to Metric or vice versa will not affect the unit for totalizers.
M31
Window for selecting flow rate that will be used by the instrument afterward.
Flow rate can be in
1. Cubic meter
short for (m3)
2. Liter
(l)
3. USA gallon
(gal)
4. Imperial Gallon
(igl)
5. Million USA gallon
(mgl)
6. Cubic feet
(cf)
7. USA liquid barrel
(bal)
8. Imperial liquid barrel
(ib)
9. Oil barrel
(ob)
The flow unit in terms of time can be per day, per hour, per minute or per second. So
there are 36 different flow rate units in total for selection.
M32
Window for selecting the totaliziers’ working unit
M33
Select totalizer multiplier
The multiplier ranges from 0.001 to 10000
M34
Turn on or turn off the NET totalizer
M35
Turn on or turn off the POS totalizer
M36
Turn on or turn off the NEG totalizer
M37
(1) Totalizer reset
(2) Restore the instrument to the default parameters as the manufacturer did
