Skyview EMS, when off, pulls down Fuel Flow volts

baldwin@dart.com

I love flying!
Joined
Nov 9, 2016
Messages
7
I have a Floscan fuel flow sensor that feeds, in parallel, sensor input into both the Skyview EMS (recently installed) and an MGL Xtreme EMS.

I normally start engine with only the Xtreme EMS turned on. FF reads 0 when priming, with a measured voltage of 1.15V where the signal splits to both the Xtreme and Skyview monitors. Skyview is OFF.

When I turn the Skyview unit on, FF (on both Xtreme and Skyview) reads the expected 7 gal/hr with 2.45V measured at the same place.

It appears that when the Skyview is off it is pulling down the measured voltage from 2.45V to 1.15V, which disables the independent use of the Xtreme unit.

Any ideas on a simple way to isolate the Skyview FF input when it is off?
 
Top