Unable to calibrate fuel tanks

[bobkat]

I have resistor type fuel senders in a Zenith Ch-701. I have set the program for a type 1 sender (resistance type) and although I have checked the wiring from the sender over and over I cannot make the 180 recongnize the senders as I add gas in 1 gallon increments. I have measured the impedence from the senders with an ohmeter and as I add fuel the impedance changes like it is supposed to. Also I've traced the wiring and the impedance of the senders changes at the Dynon 180.
Is there some other thing I should do to try to make the Dynon mind its manners and recognize the resistance change as I add fuel? It won't work on both tanks, both right and left tanks, even though the resistance from the senders change as it is supposed to.
Thanks for any suggestions. Bob

 

[dynonsupport]

What are examples some of the impedance values you're able to measure with the multimeter?

 

[bobkat]

I'm at home now and just going from memory, but I think the values were from a low of around 23 ohms to a half filled (5/10 gallons in a square tank) of about 57 ohms. I'm just going from memory but I think I'm fairly close.
Thanks for the reply! I sure love the Dynon! Bob

 

[bobkat]

Went out and checked. The senders are standard VDO resistive senders. They are supposed to show 10 ohms empty and 180 full. Mine start out about 30 and when half full it reads 71.

 

[dynonsupport]

What are the sensor values displayed on the screen as you add fuel?

 

[bobkat]

I'm an idiot! I somehow mixed up the rigfht wing and left wing wires so when I started to calibrate the left wing and added gas, I had it switched to the right wing and didn't realize it! Sorry to waste your time. It works great now, even for a computer illiterate idiot like me!
I hope I can fly it better than wire it! Hah! Let's see tower says turn right, that's thattaway, and left is the other "right!"