Fuel Flow Sensor Questions

[PA14driver]

I am looking at installing a fuel flow instrument in my new panel? A safety concern I had is what happens if the wheel inside the sensor seizes up, will it restrict the fuel flow? I went back through some old discussions on this topic and it is a restriction by itself so you have to ensure the correct size transducer is used to account for that restriction. Thanks.

 

[mvivion]

No, it won't restrict flow substantially. The manufacturers of these devices have to demonstrate that they are essentially fail safe in that regard.

That is, if you buy a certified product, which I assume you're talking about.

MTV

 

[PA14driver]

Thanks for your reply. Yes it would be a certified product, one of the 2 that has been discussed on this site (EI or JPI) previously. If I understand you correctly, they are designed with enough capacity that should the wheel seize, say on take-off and committed, I would still be able to complete the take-off, do a go around and land safely.

 

[mvivion]

That is my understanding of the requirements for certification, yes.

MTV