OAT Sensor

[VictorV]

Has anyone used an OAT sensor for the Garmin G3X other than the GTP-59? The GTP-59 is stupid expensive ($500) for what it
is. I read that it's because it's also for certified aircraft which supports the high price but it's still insane.

Victor

[Dave S]

Victor,

That price is incredibly stupid - agreed.

I went the old tech way - a food thermometer with the correct temp range - its little button battery is still powering the thing (although I do turn it off when not flying) - placed it through the windscreen up high like many of the old Cessnas; using the stem from the pocket holder it came with so it can be slipped in and out of the windscreen - a little acrylic reinforcing collar glued to the stem holder and all stuck to the windscreen with 3M auto trim tape. Has switchable on/off and F/C scales. And - the thing is independent of any other system so some failsafe system doesn't take it with as it fails.:rolleyes:

For accuracy - it is right on.

Don't know if many can deal with the price - something like $9.56, with today's prices, probably a bit over $15 now. No endless software upgrades or updates either.

Hi tech - low tech - appropriate tech - each has its price I guess.

[Shadowrider]

Dave I like your thinking but the difference is the g3x needs temperature input to function correctly.

[109JB]

Not really. The G3X will still function correctly without an OAT, albeit without some information available such as TAS and density altitude but the G3X will still work just fine.

[Dave S]

Hope I didn't mislead anyone - I must confess my ignorance of the G3X:o

[VictorV]

I think that having density altitude available is an important feature so I'll stick with the OAT tied into the G3x.
Hopefully there is a cheaper option.

Victor

[jiott]

Dynon has an OAT sensor for a much more reasonable price that ties into their Skyview system. Don't know if its compatible with the Garmin G3X, but may be worth checking.

[Shadowrider]

Not really. The G3X will still function correctly without an OAT, albeit without some information available such as TAS and density altitude but the G3X will still work just fine.
I guess that depends on what you consider function correctly. Same logic, it will still function correctly without gps, albeit without some information available. Point is I would just use the garmin oat and know you are good to go.

[n85ae]

Yep, the big problem with owning anything Garmin is the depth your pockets need to be. Nice stuff, but $500
for most likely a $2 thermistor packaged in a neat holder with some wire ...

Jeff

[Shadowrider]

Agreed. I was going to go with mgl on our builds but decided decided I may regret it. Figured if I went with garmin I wouldn’t regret it. I have loved the garmin and no regrets but they are pricey. Not free to have your name on every piece of Avation material.

[PapuaPilot]

Unfortunately it is what it is and it has three wires. Otherwise I would guess it is just a alumel/chromel probe, which could be substituted with a generic probe.

When you get the OAT probe isn't it actually part of the LRU sensor kit? That is what I see at ACS.

[109JB]

This is what I got for my G5X. Should work with the G3X too and is a few hundred dollars cheaper.

https://www.steinair.com/product/garmin-gad-13-and-davtron-oat-sensor/

[VictorV]

When you get the OAT probe isn't it actually part of the LRU sensor kit? That is what I see at ACS.

Yes, it's included but the LRU kit is still $1500+ and if you look at the prices of the individual items you
can save a few $$ with the kit but not much unfortunately.

Victor