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Old 26-08-2016, 11:35   #1
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Airmar DST800 wrong water temperature?

Good day all . I have a new dst800 reading a water temperature 10 degrees on the plus side . I put it in the thruhull that the old nmea183 unit came out of and it was reading the water temp right. The unit is clean and only a year old . Any one else have this problem ?

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Old 27-08-2016, 06:24   #2
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Re: Airmar DST800 wrong water temperature?

10C = 50F
“Fast-response temperature sensor provides 0.2C (0.1F) accuracy”
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Old 27-08-2016, 06:56   #3
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Re: Airmar DST800 wrong water temperature?

Check you display for temperature correction. Zero out any corrections and check against a dip thermometer.

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Old 27-08-2016, 07:03   #4
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Re: Airmar DST800 wrong water temperature?

THREE TIMES!! I have had the temperature fail on the DST800. Twice replaced under warrantee last time refused. I am tired of the paddle wheel jamming with weed so about to fit the CS4500.


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Old 27-08-2016, 11:15   #5
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Re: Airmar DST800 wrong water temperature?

Yep checked with a pool thermometer . 10 degrees difference . No calibration in my simrad is20 instruments or in my nss7 .

Not sure what else to do other then get a new one ?

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Old 27-08-2016, 11:23   #6
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Re: Airmar DST800 wrong water temperature?

Didnt take long before the temp sensor failed in my DST800, I think it might be a piece of s...
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Old 27-08-2016, 11:50   #7
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Re: Airmar DST800 wrong water temperature?

Quote:
Originally Posted by BentP View Post
Didnt take long before the temp sensor failed in my DST800, I think it might be a piece of s...
My dst800 temperature failed too. Sounds like a design problem.
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Old 27-08-2016, 13:15   #8
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Re: Airmar DST800 wrong water temperature?

Temp sensors in t-ducers are a chip that is fed 5 VDC.
Water leakage into a poorly potted chip exposes 5 VDC to salt water.
I'm retd from the business 15yrs now,but back in the day I replaced many bronze t-ducers with built in temp sensor due to this leakage & the resultant rapid electrolysis caused by it.

If the boat couldn't be hauled right away,I cut the +5 V wire at the t-ducer plug.
Moral of story-if temp readings go crazy-fix it fast!

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Old 27-08-2016, 20:02   #9
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Re: Airmar DST800 wrong water temperature?

I've got a DT200 where the temp has gone nuts just as you describe.
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Old 28-08-2016, 06:31   #10
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Re: Airmar DST800 wrong water temperature?

I do have another thru hull , it has an old sensor in it at the moment . Maybe I will get just a temp sensor and put it in there . I have a nmea2000 network so I will just choose that input for temperature , better then changing the whole dst800 and then to find the same problem .

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