1st DEF Refill VIDEO
Postmaster
Joined: Aug 2006
Posts: 2,829
Likes: 3
The DEF tank uses a real simple electrode type level sensor that only measures 3 positions, so there is no real way to provide a accurate DEF level like you see with fuel level which uses a float system. The electrodes on the sensor are arranged vertically to provide a high, middle, and low level signal and a fourth electrode runs the length of the sensor to act as the ground. When the tank is full, the DEF (which is a good conductor of electricity) closes a circuit between all three level electrodes and the ground electrode, indicating the tank is full. As the DEF is consumed, the level drops and uncovers each electrode in sequence. The PCM calculates the DEF level based on these signals.
Thread Starter
|
Post Fiend
Joined: Apr 2004
Posts: 5,158
Likes: 35
From: North of Salt Lake City
The DEF tank uses a real simple electrode type level sensor that only measures 3 positions, so there is no real way to provide a accurate DEF level like you see with fuel level which uses a float system. The electrodes on the sensor are arranged vertically to provide a high, middle, and low level signal and a fourth electrode runs the length of the sensor to act as the ground. When the tank is full, the DEF (which is a good conductor of electricity) closes a circuit between all three level electrodes and the ground electrode, indicating the tank is full. As the DEF is consumed, the level drops and uncovers each electrode in sequence. The PCM calculates the DEF level based on these signals.
Elder User
Joined: Dec 2009
Posts: 744
Likes: 0
Epic great job buddy........the 2 1/2 gal jugs I bought brought a nifty hose attached to the mouth of the jug........no funnel required.......but hey look at it this way, you wouldn't of tasted the urea.
Tuned
Joined: Jul 2010
Posts: 301
Likes: 6
From: Northwestern Ontario
Ya, I wish it had a more accurate guage to tell how much was in there. I just top it off whenevery I feel like it. last time it took 1 gallon after 2200 kms (1500 miles)
I have yet to let it go to "less than half" reading.
--
Gordon
I have yet to let it go to "less than half" reading.
--
Gordon
New User
Joined: May 2007
Posts: 12
Likes: 0
From: Waukesha, WI
I just purchased the 2.5 Gal Peak bottle for $11 with spout. Hopefully the spout is a little more convenient than the funnel. Certainly would be nice to have a gauge or graphic indicator for long trips.
Thread
Thread Starter
Forum
Replies
Last Post
firebus
6.7L Power Stroke Diesel
22
Mar 7, 2022 07:44 PM
