Airmar DST800 triducer speed OK but no depth

sealegsjim

sealegsjim

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The depth sounder makes the clicking noise when listened to with long wave radio. When checking devices in the Triton setup the speed shows up positive but " no device" for depth.
I have checked the cabling NMEA 2000 and it all seems sound. I can only think that the sounder is defective and I will need to buy a new DST 800 unit at around £500. Please tell me I am missing something!
 
odd, my DST800 lost it's T (emp) depth works, speed wheel is always barnacled and never works. If D(epth) also fails I'm doomed :(

on a serious note, Paul, are you sure DSTs are known for depth failing? All the posts I've seen were on Temp failing!

V.
 
vas said:
odd, my DST800 lost it's T (emp) depth works, speed wheel is always barnacled and never works. If D(epth) also fails I'm doomed :(

on a serious note, Paul, are you sure DSTs are known for depth failing? All the posts I've seen were on Temp failing!

V.
Click to expand...

Yeas, sure. I even had my own stop working at about 2 years old, luckily it was a Garmin branded unit and they replaced it FOC with a DST810, which seems to OK.

dst800 depth failed - Google Search
 
I have a good DST800 for sale if interested. I thought it was faulty but it proved to be a duff battery in the Raymarine hull transmitter. PM me if interested.
 
Yes it seems these Airmar combined units have built in failure of depth after a few years and they are not even made by raymarine or Garmin but embrace their ethos clearly. Our stopped after 3 years and we borrowed another to check which worked fine and had to replace . I don’t know if removing and putting in plastic plug when not using prolongs life but doubt it.
 
so what cheap(ish) NMEA2000 depth and temp sensor could one get?
My AIRMAR DST800 is already 6yrs old, temp stopped working 2yrs ago so guess depth is next to go :rolleyes:
 
Slight thread drift but seeing the configurability of the gen 2 dst810 I'm spotting the potential opportunity to not only solve my ongoing depth issues without getting the boat lifted but also maybe getting more accurate speed than my current paddlewheel (an st60 log which never seemed to work well with the st50 head no matter how much I tried to configure it) at the expense of some cash for the transducer and extending my n2k backbone a bit.

Do airmar have a standard through hull housing...in other words...would a dst810 slot right into the existing housing where the st60 log currently is? The old st50 transducer was certainly fatter but I'm wondering whether dimensions have stayed standard over the 12 years since my current log was installed.
 
laika said:
Slight thread drift but seeing the configurability of the gen 2 dst810 I'm spotting the potential opportunity to not only solve my ongoing depth issues without getting the boat lifted but also maybe getting more accurate speed than my current paddlewheel (an st60 log which never seemed to work well with the st50 head no matter how much I tried to configure it) at the expense of some cash for the transducer and extending my n2k backbone a bit.

Do airmar have a standard through hull housing...in other words...would a dst810 slot right into the existing housing where the st60 log currently is? The old st50 transducer was certainly fatter but I'm wondering whether dimensions have stayed standard over the 12 years since my current log was installed.
Click to expand...

It's not standard unfortunately. The through hull diameter is the same, 50 mm, but the internal diameter for the DST800 and the ST60 Log are different... guess who found this out after launching ? :mad:
 
I don't suppose you have a Raymaring Seatalk to Seatalk NG / NMEA2000 anywhere on your system? Mine annoyingly locks up the N2k Network and stops the plotter seeing the speed and depth from the DST 800. The devices don't appear on the plotter, neither does the wind.
A quick reboot of the converter and everything starts working again.
 
dolabriform said:
It's not standard unfortunately. The through hull diameter is the same, 50 mm, but the internal diameter for the DST800 and the ST60 Log are different... guess who found this out after launching ? :mad:
Click to expand...

After a little investigation I suspected as much. I *think* the deal is that there is some degree of standardisation over the through-hulls and some degree of exchangeability is possible, but not between the old logs which are a "p120" and the dst810 which are a "p617v".

And yes I do have the seatalk->seatalkng converter. My hope was that I could plumb a dst810 into the seatalkng backbone, disconnect the analogue transducers to the st50s and have them pick up depth/speed/temp from the converter over seatalk 1. If I have to replace a through-hull though I might just go with minimum work and replace the existing depth transducer with the analogue replacement I already have.
 
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