Anyone have an idea what fuel calibration system this is.

[Wood]

Any one have an idea on what fuel calibration system this is. I can’t find any info on this one to read on how to recalibrate.
Here’s a picture

Thank you in advance.

[pappas]

That looks just like the old Princeton Probe calibration box. Except, someone replaced the black cover with a clear one. Princeton was purchased by RED Avionics. The calibration instructions are on their website and are easy to find. They had a type with 2 set points, empty and full, and one with 5 set points. If you call RED and ask them, they will tell you which one you have.

[Wood]

That looks just like the old Princeton Probe calibration box. Except, someone replaced the black cover with a clear one. Princeton was purchased by RED Avionics. The calibration instructions are on their website and are easy to find. They had a type with 2 set points, empty and full, and one with 5 set points. If you call RED and ask them, they will tell you which one you have.

Thank you so much for the reply.

[pappas]

I forgot to mention. There is likely a model number and information label affixed to the back of that box.

[Wood]

I forgot to mention. There is likely a model number and information label affixed to the back of that box.

Thank you Sir.
I did end up recalibrating the system as per the instructions and all was going good until the end. Filled the tank with 15th at a time and calibrating it at zero, 1/4, 1/2, 3/4 and then full with 60 Lts at 5he end. Finished it off and it only. Now shows 45 lts at full so I have to drain it all again and start from scratch.

Oh well.

Mark

[pappas]

That's typical. For all of my calibrations, regardless of what probes I have used it usually took more than one fill, calibrate, drain, repeat cycle. Usually, because I forgot to push the button after one of the fuel adds.

I went through the same thing a few months ago when calibrating the new RV7-A, and I was looking out for it! I'm sure you will get it.

[pappas]

Of course, all of my advice relates to US Gallons! We were going to change to the metric system down here decades ago and then on the appointed day we collectively just said oh screw it! So I can't help you when you refer to things like "liters"? What the heck are those? :-(

[Wood]

All good thanks for the reply. I’m have my annual this month so, when it’s down I’ll do it again and let you know how many times it takes. Making a mental note to push that button after adding fuel.

Cheers
Mark