 The
transducer is a device that converts the mechanical motion
of a spinning turbine into an electronic signal that is
read by the fuel computer. The magnetic pick-up assembly
detects the spinning turbine and counts the revolutions.
This produces a series of pulses that is transmitted to
the fuel computer. The computer uses the pulse frequency
to calculate the fuel flow over time. The Shadin Avionics Company
Incorporated-designed fuel flow transducer can be used in
conjunction with all of our fuel totalizer units and fuel/airdata
computers. Shadin Avionics offers two types of fuel flow transducers
that cover almost all General aviation and warbird aircraft.
(Please refer to the installation STC approval list.)
- Tangential flow transducers -- designed for reciprocating
engines
with low system pressure (up to 200psi) and fuel flow
rates (up to 45gph). They require a stainless steel
flame shield, sleeve, canister or box.
- Axial flow transducers -- designed for turbine and
large radial engines
with high system pressure (up to 2000psi) and fuel flow
(up to 450gph) applications. These transducers are made
of stainless steel and meet all FAA requirements for
installation in the engine compartment without additional
heat or flame shielding. These transducers have excellent
linearity and immunity from viscosity variation due
to fuel temperature variation and low locked rotor pressure
drop.
 All
hardware used in these assemblies, as well as the bracket
to support them, is approved by the FAA under the PMA system.
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