| | Fuel Flow Management Questions
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Contact our Technical Support Department |  | My aircraft is 28 VDC and the transducer is 12 VDC. Is this OK? - Yes. The flow meter steps down the voltage and provides it to the transducer.
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| How do I change the K-factor on my flow meter?
- Refer
to Manual Entry Mode section of the Operating Manual. The unit must be
pulled from the panel to access the switch that is used to put the flow
meter into Group I configuration mode.
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| Do I need shielded wiring?
- Yes. Shielded wiring is required. Ground the shielding on the indicator side only.
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| Why does the fuel flow read intermittently high?
- There
may be EMI noise affecting the fuel flow signal (e.g., magnetos or
generator/alternator). If a Shadin Avionics (vs. Floscan) transducer is
installed, a magnetic shield may be installed directly over the
transducer. Contact Shadin Avionics Sales for details.
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| Why are the fuel flow readings erratic on a carbureted engine?
- Verify that the configuration is set for carbureted not injected. Refer to the Operating Manual for details.
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| Can the brightness level on my Fuel Flow Management Indicator be adjusted?
- Yes.
The Microflo is adjustable with the toggle switch marked "Bright" on
the front of the indicator. The Miniflo brightness is adjusted by
turning the potentiometer located at the side/rear of the unit counter
clockwise to increase the minimum intensity. The Digiflo adjustment is
located on the back of the indicator though a small access hole which
may be turned counterclockwise to increase the minimum intensity.
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| Can
a standard Fuel Management System (i.e., Digiflo, Miniflo, or Microflo)
be converted into one that can be interfaced with my GPS to show fuel
required to destination, fuel reserve upon reaching destination, and
nautical miles per unit of fuel? If so, how much will it cost?
- Yes, depending on the serial number of your indicator. Contact Technical Support Department to confirm applicability.
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| Why are the fuel flow readings 50% of what they should be?
- Verify
that the K-factor is set properly and that the transducer is not
installed backwards. Fuel must flow into the transducer through the
side of the transducer marked "input".
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| Why are the fuel flow readings inaccurate?
- Verify that the K-factor is set properly and that there is not a 90° fitting within 3" of the inlet.
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| Why are the fuel flow readings high?
- The
next time the aircraft is flown in cruise, turn on the boost pump. If
the fuel flow drops, this indicates that there is air leaking into the
fuel line upstream from the transducer. It is possible that air is
leaking into the system through the selector valve or other connection.
Consult with your avionics shop and have them contact Shadin Avionics
Technical Support Department to troubleshoot.
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| How do I verify the software version of my fuel flow indicator?
- Press
the ENTER/TEST button for approximately three (3) seconds to initiate
the self-test mode. The last screen displayed before returning to the
fuel flow screen displays the software version.
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| How do I verify the K-factor currently programmed in my unit?
- Press
the ENTER/TEST button for approximately three (3) seconds to initiate
the self-test mode. The first item displayed after "GOOD" is the
K-factor expressed in thousandths (e.g., 29.6 = 29,600 pulses).
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