[PSUBS-MAILIST] Flux Gate Compass

Cliff Redus via Personal_Submersibles personal_submersibles at psubs.org
Thu Aug 6 12:18:43 EDT 2015


David, I use a OS5000-S Solid State Tilt Compensated 3 Axis Digital
Compass (Serial) from   www.ocean-server.com/compass.html .  As this will
not work in a steel pressure hull, I designed a 1-atm pod that contains the
sensor out 6061-T6 and anodized it.  This is mounted out side the pressure
hull but inside my FRP shell cover.  I have been happy with its
performance.  It sends a RS-232 signal in ASCII that contains the boat
heading, roll and pitch angle as well as the water temperature.  In the
PLC, I have ladder logic that parses the string and converts these into
real variables that are display on the HMI both graphically and as text.
these sensors cost $325.  There only a good idea if you are using a PLC
that has a spare serial communication port.


Cliff

On Thu, Aug 6, 2015 at 1:17 AM, David Colombo via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Bought on Ebay. $49 delivered. Looks like it made in 2005.
>
> On Wed, Aug 5, 2015, 10:57 PM Brian Cox via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> David,
>>                 How much was it ?    From radio Shack ?
>>
>> Brian
>>
>> --- personal_submersibles at psubs.org wrote:
>>
>> From: David Colombo via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>> To: Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>
>> Subject: [PSUBS-MAILIST] Flux Gate Compass
>> Date: Wed, 5 Aug 2015 22:49:10 -0700
>>
>> Hi Guys, I just picked up a flux gate compass,by Micronta (Radio shack)
>> which comes with about a 9" long pig tail from the sensor to the unit
>> itself. I think it could work quite nicely if I can extend the length of
>> wire from sensor to the display. Any thoughts about  this. The sensor is
>> about 1" cubed and has a lead with six wires into the display. Its a 12v
>> unit and the power input is on the display itself. So before I tear it
>> apart, I thought I would put it out there on the possibility and how to
>> determine the appropriate wire gauge size. I will want to extend the
>> pigtail to around 10 feet.
>>
>> Best Regards,
>> David Colombo
>>
>> 804 College Ave
>> Santa Rosa, CA. 95404
>> (707) 536-1424
>> www.SeaQuestor.com
>>
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