vision microsystems VM1000 - 1.4 FUEL COMPUTER SYSTEM INSTALLATION; Fuel Flow and Pressure Transducer Installation

\J
SECTION
I INSTALLATION
13
1.4
FUEL COMPUTER SYSTEM
INSTALLATION
1.4.1 FUEL FLOW
TRANSDUCER
INST.
(P/N
3010019,
32)
The inlet
and outlet of the transducer
are
tapped
with 1/4 inch
internal
NPT. Use
only
aircraft
grade
hoses
and
fittings when
adapting to the 1/4
NPT. Wrap
the transducer
with
a
heat
barrier
material
such as
'FIRE
SLEEVE'.
The
transducer
should be
mounted
where
only
filtered,
clean
fuel
flows through
it
and on the enqine
pressurized
sidg
of the
fuel
svstelrn.
The
primary
considerations
for mounting
are:
=)
DO NOT:
mount
the
transducer
where
'upstream
turbulence'
exists
(such
as sharp
bends
or any
disturbances in the fuel
line).
A
minimum
straight
run
of 5 inches
of inlet fuel line is
recommended
after these
types
of
disturbances
to
settle fuel
flow.
::)
DO
NOT:
ground
the flow
transducer
body
to
any
part
of
the
engine
or
aircraft
if
possible,
os this
forms a'ground
loop'path
through
the
grounded
body
of
the transducer
and
may
affect
the transducer
signal.
lf
this cannot
be
complied with then
INSURE that
the
engine
is EXTREMELY
well
grounded
to the
same
point
as
the DPU.
Proper
engine
grounding
is facilitated
by
the use
of
a
common
ground
BUS
bar and heavy
gauge
(H
or lower
AWG)
wire. See
your
aircraft
manual.
ORIENTATION
TRANSDUCER
P/N 3010019
(CARBURETED)
the
transducer
is
mounted
with
the arow on
the side
pointing
straight UP
and
also with the fuel flow
in
the
proper
direction
(lN
to
OUT).
TRANSDUCER
P/N
3010032
(INJECTED)
mount
the
transducer
so that the three
WIRE LEADS
exit the
transducer
straight
UP
and also
with the
fuel flow
in the
proper
direction
(lN
to
OUT).
The transducer
is
mounted
'in-line'
between the fuel
flow
controller
and the
flow
divider
and
away
from
extreme heat.
50t0002
REv F
VMIOOO
OWNERS
MANUAL