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Mod 60 fuel sender - linearised?

 
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graeme bird



Joined: 15 Jul 2010
Posts: 417

PostPosted: Tue Aug 13, 2019 9:40 am    Post subject: Mod 60 fuel sender - linearised? Reply with quote

Ive now got fuel in the new build, enough to check the resistance of the sender installed. It seems to go from 0 ohms when empty to 63 ohms with 30 litres in and has gone from 21 to 44 in steps, so I assume as the float goes up switches are opening and resistors are switched in.
My questions are
a) if it shows eight steps are the switches arranged so as to cater for the odd shape of the europa tank or is it non linear?

b) can anyone confirm what the gauge ought to be ?


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_________________
Graeme Bird
Kit 2 in build, Mono Classic 912;
Kit 1 G-UMPY - Mono Classic/XS FFW 912S, Woodcomp SR3000/3W CS, trutrak Gemini 2 axis AP, PAW, PFLARM, ads-b out, 8.33khz, mode S, FP-5, Aera500, SD on Nexus, Smart A3
380 hours, 980t
g(@)gdbmk.co.uk
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Ivor



Joined: 23 Jul 2015
Posts: 51

PostPosted: Thu Aug 15, 2019 2:01 am    Post subject: Re: Mod 60 fuel sender - linearised? Reply with quote

Hi Graham
Wema is the fuel sender unit in my aircraft, the web link is
https://wema.co.uk/collections/caravans-mobile-homes/products/fuel-sender?variant=29346567239
It gives you the information you require about what gauge to use,
My sender goes into the main side of the fuel tank (port) and reads in
8 increments but the later ones do 12,

Ivor


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