GRT6000 fuel gauge calibration

I am having trouble getting my fuel gauge calibration set correctly.  I have Zenith supplied vow sending units mounted on the side of tank per the plans and drawings.  The sending units should  read 0 empty at 11 ohms and full at 0 ohms if I remember correctly. Following GRT calibration directions I am no where close to correct readings.  Can anyone share the correct calibration settings.  Thanks

Views: 61

▶ Reply to This

Replies to This Discussion

Permalink Reply by John Austin on January 18, 2025 at 7:19am

The VW senders as supplied by Zenith are about 10-70 ohm range as I recall.  Just put an ohm meter on them to verify.

John

N750A

Permalink Reply by JTC on January 21, 2025 at 7:59am

Did you install the 270k or 470k resistor?

Permalink Reply by Carl Orton on January 26, 2025 at 2:07pm

As JTC notes, the resistors are important. I had to change mine. I don’t recall what I started with, but GRT said the VDO units had an un-typical range of values. I finally got mine set up relatively close, but I still don’t trust them. I always dip stick my tanks preflight. I must have done my calibrations 3 times!! GRT also said that I should reset the scaling factor and offset to their neutral value and cycle power before setting them to a new value. GRT was very helpful but they have some internal setup docs that aren’t on their regular web pages. 

RSS

New from Zenith:

Zenith Planes For Sale 
  

Classified listing for buying or selling your Zenith building or flying related stuff...

Custom Instrument Panels
for your Zenith:

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, Dynon and Garmin avionics, and more.

Zenith Homecoming Tee:

Zenair Floats

Flying On Your Own Wings:
 A Complete Guide to Understanding Light Airplane Design, by Chris Heintz

Builder & Pilot Supplies:

Aircraft Insurance:

 
 

Transition training:

Lavion Aero

K&S Aviation Services

Aircraft Spruce & Specialty for all your building and pilot supplies!

How to videos from HomebuiltHELP.com

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.

© 2025   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service