Page 36 Vision Microsystems Incorporated
General Fuel Flow Transducer Installation
Use the J4 connector harness 700709 labeled FFSIG (white), FFPWR
(red), and FFGND (black). Follow any installation instructions included
with the probe. Save your K-factor tag (tied to the transducer) as you will
enter the number during initial setup in the step coded 40.6. The fuel flow
transducer is mounted in the pressurized side of the fuel delivery line of
the engine, not on the suction side. Contact us if your engine is gravity
fed. The transducer inlet and outlet are tapped ¼” NPT. Use only aircraft
grade components appropriate for the plumbing.
For carburetors the transducer is typically located between the engine
driven pump and carburetor. See the fuel pressure installation section for
special installation requirements.
For injected applications it is typically located between the fuel flow servo
and flow divider or, between the engine driven pump and fuel flow servo.
Check with the airframe/engine manufacturer for the proper location.
IMPORTANT NOTES:
• Do not mount the transducer where 'upstream turbulence' may
exist. A desired straight or smooth curved path of 5 inches
minimum of inlet fuel line is recommended.
• Transducer orientation: If the transducer is not oriented
properly (with respect to level) a significant accuracy error can
occur. See diagrams for the proper orientation.
• After installation, we recommend wrapping the transducer with
a blanket of heat barrier material such as 'FIRE SLEEVE'.
Make sure the material is properly secured using standard
aircraft practices and procedures.
• Calibration can be performed if needed on the flow transducer
by adjusting the K-Factor. See the Set up mode.
To Next Page
Loading...
Need help?
General
