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Old 15-09-2020, 01:32   #1
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ST50 wind showing boat speed

I recently fixed my ST 50 Wind transducer. It wasn’t reading wind direction properly but now is. Only problem is now that I have reinstalled the instrument it is reading boat speed not wind speed. True wind reads boat speed, apparent wind setting reads zero.
Any suggestions?
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Old 15-09-2020, 01:36   #2
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Re: ST50 wind showing boat speed

I guess your wind speed sensor is not working or is not properly connected.
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Old 16-09-2020, 20:09   #3
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Re: ST50 wind showing boat speed

Checked all the wiring and it all seems correct. Kind of unusual that it would read boat speed at all. I know it communicates with the boat speed instrument to calculate apparent wind, but why would it come up on the display?
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Old 16-09-2020, 22:02   #4
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Re: ST50 wind showing boat speed

It appears that your apparent wind speed is not being measured at all. Thus when set to true wind speed it has zero as the apparent WS and calculates the true wind speed as the boat speed, per the usual algorithm.

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Old 17-09-2020, 03:23   #5
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Re: ST50 wind showing boat speed

Shouldn't the windsensor measure apparent wind and true wind is calculated from apparent wind speed, wind angle and boat speed?

I do know the ST50 but it sound rather like a config issue or during issue (as of that the boat speed pulses reach the wind sensor input). But then I read that the wiring had been checked already.
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