Altimeter issues. Reset/Calibration possible?

[reauxheaux]

View attachment 7841981


These are the current barometric pressure readings for the US.
The Gren altimeter should read about 400 ft low in St Louis and approximately 250 ft high in Seattle right now.

 

[carlg007]

Just watch the first minute of this video...

View: https://www.youtube.com/watch?v=ilLch-ha3ao

Thanks for posting, I am not a pilot this is all new to me. How many people thought they would know their actually elevation when they selected this option? If there is no way to adjust it unfortunately it most likely always be wrong! Give me the red A badge!

 

[Ovrland Bill]

My Altimeter at least gives me a rough idea of time: I can only make out the displayed value when the instrument lights come on at night

 

[Tom109]

Sounds like we need a lowest altitude brag thread. Currently in traffic at -111.
View attachment 7841977

You should win a prize for -111 at 11deg !!!

 

[Sarven]

Living in New Orleans I expect to see negative numbers, but the city isn't 70' below sea level.

Should be showing around 8-10' above sea level where it sits.

Anyone know of an issue or is this just a limitation of altimeters in vehicles that

Living in New Orleans I expect to see negative numbers, but the city isn't 70' below sea level.

Should be showing around 8-10' above sea level where it sits.

Anyone know of an issue or is this just a limitation of altimeters in vehicles that I have to live with?

I live in NJ having the same issue about 100 ft off

 

[Stu_Barnes]

Well I’m next to shake shack in marina del Rey. And apparently I’m -113ft



The burger will be a bit soggy I suppose.

 

[Bruce]

That’s actually a great idea. Ineos should parter with Bremont, CWC, or some other British watch brand. I’ll mention the brand Christopher Ward, but I’m assuming Sir Jim wouldn’t want some other blokes name in this vehicle

I'd take IWC, another Mercedes AMG F1 sponsor too.

 

[Clark Kent]

I posted earlier that I think the altitude data is GPS-derived, not atmospheric pressure. Can anyone confirm either way, or is there just a general consensus that it's a pressure instrument because it's labelled Altitude? A GPS error could also show the wrong height because it relies on triangulation between multiple satellites.

 

[GrumpyBastard]

I’m willing to agree that it’s GPS based. There would be no reason to include a pressure instrument. Going to the off road pathfinder page shows the same data. I surmise that people have a similar unrealistic expectation of GNSS-based altitude/elevation figures. Although it’s not “accurate”, I still appreciate the novelty of it in my dashboard versus the branded plug option.

 

[LeftCoastOverland]

Well I’m next to shake shack in marina del Rey. And apparently I’m -113ft

View attachment 7842304

The burger will be a bit soggy I suppose.

I think my buddy caught you in the wild! View attachment IMG_3035.jpeg

 

[Stu_Barnes]

That was the sheriff right? And yep. That’s me.

 

[LeftCoastOverland]

That was the sheriff right? And yep. That’s me.

Yep! LA County deputy who runs the boat unit out of MDR. Best of friends since grade school!

 

[Stu_Barnes]

Yep! LA County deputy who runs the boat unit out of MDR. Best of friends since grade school!

I noticed them as they did their drive by last night..... sneaky.

 

[TD5-90]

My pre-Grenadier Hyundai Santa Fe had an inbuilt altimeter which was calibrated by GPS. It was an interesting exercise to compare its output with local "Official" elevation markers. Usually within 10-15m of the markers in various east coast locations from Cairns in far north Queensland to Melbourne some 3600 km to the south.
Surf club carpark altitudes varied between -5m and +20m. I haven't a clue what their real elevation was but my feet were dry

At sea level +/-10m are a lot of error, at 2000m they're nothing. In fact, at 0.0m elevation even 1mm is inf % of error.

But there are people who believe it's best practice to calibrate their barometic altimeters at sea level....

Use common sense when using an altimeter, be it barometric or GPS based: If your're around sea level, common sense reasoning gives your altitude.

 

[Psignore00]

Ok, this does not meet the 75 ft margin of error

 

[reauxheaux]

Ok, this does not meet the 75 ft margin of error
View attachment 7842618

Who knew is was so deep going down Meg's Hole...road.

 

[AngusMacG]

Who knew is was so deep going down Meg's Hole...road.

Somehow that seems like a good Family Guy joke

 

[Obxgrenadier]

Living in New Orleans I expect to see negative numbers, but the city isn't 70' below sea level.

Should be showing around 8-10' above sea level where it sits.

Anyone know of an issue or is this just a limitation of altimeters in vehicles that I have to live with?

I have the same issue on the outer banks of NC. I’m 105 feet under.

 

[Stu_Barnes]

Ok, this does not meet the 75 ft margin of error
View attachment 7842618

Well we have a potential winner here. lowest reading gets a free mug and t shirt.

It's official competition time.

Entries close on last day of Feb.

 

[Krabby]

Well we have a potential winner here. lowest reading gets a free mug and t shirt.

It's official competition time.

Entries close on last day of Feb.