Dan The paddle wheel needs to spin to get a reading. I have an Airmar transducer for the ST 60. It stopped giving speed readings even though the paddle was clean and rotated easily. A new paddle solved the issue. My guess is that the build up of bottom paint was blocking the impulse signal the paddle creates. Perhaps scrapping the paddle free of paint might solve your problem.
Ed Levert C&C 34 Briar Patch New Orleans On Wed, Oct 10, 2018 at 7:39 AM Dan via CnC-List <cnc-list@cnc-list.com> wrote: > Hi all, I have a ST850 Airmar speed/temperature transducer that I'm trying > to get working (again) with my new equipment. I'm pretty sure the issue is > with the wiring so if any of you have this transducer maybe you know where > I'm going wrong? > > ***My ST850 is from 2006 so I'm pretty sure it's not the "smart sensor" > one that is supposed to output NMEA2000 sentences directly. > > With my old system ONLY the green wire was hooked up to a B&G nav computer > and the black and shield were connected to ground. (no temperature data) > > I've got: > GREEN to Speed Pulse IN (not sure what "pulse" is ecactly) > Black, and Shield to Ground IN > Red to Speed Voltage IN > Yellow/Red Stripe to Temp IN > Brown to nothing > > With this configuration I'm getting Temperature NMEA sentences, but no > Speed. Anyone know where I'm going wrong? Does the padwheel have to be > turning to get speed sentences? > > Dan > Breakaweigh > C&C44 > Halifax, NS > > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
