Dynon D100 ASI

[searey429]

I have my D100 and analogue ASI connected however for some reason my ASI reads "0" and the Dynon reads 75knots and the scale is continually moving between 74 and 76knots when stationary (aircraft not flying yet). There are no leaks in the pitot system as I can blow into the tube and block the end with my tongue and the ASI will hold the indicated airspeed. If I suck on the tube the indicated speed on the D100 will decrease by 10 knots or so but won't go back to zero.

Any suggestions as to what is going on?

 

[Brantel]

I imagine that this amount of error is too much and there might be something else wrong but you can reset the zero point on the Dynon. The proceedure is in the install manual.....

 

[dynonsupport]

If somehow the pitot line is pressurized or the static running some vacuum, you'd see this. As a definitive test of the Dynon unit, unplug your plumbing from the back of the unit and see if it goes to zero. If it doesn't, we may need to take a look at your unit.

 

[searey429]

OK will check today and get back to you.