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01-16-2006 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,538
Joined on 05-28-2004

Post #: 1
Post ID: 1945
Reply to: 1945
Gaussmeter wanted.

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Does anyone know if exist any Gaussmeters that have no own indication but would be powered from a serial port of a computer and dump data back to PC into some kind of to custom software? It is not that I do not what to pay $300-$400 but that I do not see even within this price range anything suitable. I need a gaussmeter that would handle up to 3T (not 1.99T as most of them do) and with ultra small probe. I have seen one like this for $3.7K but it was obviously not what I would like to peruse. Since the gaussmeter’s sensor small like this is available I wonder if a “computer output only” devise would cost a reasonable hundred bucks, as it should not have a lot of stuffing in it.

Rgs,
Romy the Cat


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
01-16-2006 Post does not mapped to Knowledge Tree
George
Posts 26
Joined on 03-23-2005

Post #: 2
Post ID: 1947
Reply to: 1945
Gaussmeter link.

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Romy,

You probably already know this site but just in case you don't:

http://www.lessemf.com/gauss.html
01-18-2006 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,538
Joined on 05-28-2004

Post #: 3
Post ID: 1948
Reply to: 1947
Gaussmeter: probe or don't probe...

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Thanks, Gorge, I know this one.  It is $250, measured only up to 2T and has a probe that is too large to be useful. 

The company that I really like is http://www.gaussmeter.co.uk/index.shtml. Their gaussmeters have range up to 3T and their smaller probes are 0.6mm. This is exactly what I need. The only problem is that their cheaper devise is 360 UK pounds and the handheld devise is 500 UK pounds. (All direct prices when I spoke with them, the dealer prices 1.5 time higher) It is perhaps not expansive from a universal perspective but it is too much money for my tasks. I know there are a lot of Brits people at this site and perhaps some one would point out what could I get them even cheaper.

There is one alternative. All those sexy gaussmeters are expensive and snobby become they state a reference calibration and certified results, partially in the milli- and micro- gauss modes. In my care I will be dealing with kilogausses and the certification of the result is not really necessary for me. I can easily calibrate a gaussmeter form a fully magnetized driver of know performance and then I care only about a delta but not about the absolute values. So, I wonder if the miniature Hall probes are available then to assemble a gaussmeters that would run into my voltmeter is very-very simple tasks. It would literally cost under $10 and will take 3-4 parts. I’m contemplating now if I need to pay a few hundred dollars. If I but an average couple hundred bucks gaussmeters then I still to need to open it up, replace the probe to a smaller one. Perhaps the same a put of time will take to make a new on from scratch…

Rgs,
Romy


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
01-18-2006 Post does not mapped to Knowledge Tree
guy sergeant
United Kingdom
Posts 258
Joined on 08-03-2004

Post #: 4
Post ID: 1949
Reply to: 1948
Re: custom made

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given that you are only really interested in measuring the field strength in one particular size of magnet gap ie that of the S2, is it worth considering making your own as in this link.

http://home5.inet.tele.dk/f-hammer/fildcoil/measure.htm

One coil of known length/diameter, one power supply generating a known/measurable current and some reasonably accurate scales to measure the displacement force.

best regards,

Guy
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  »  New  Vitavox S2 with Electromagnets..  Cutter Head/Servo...  Horn-Loaded Speakers Forum     91  765259  01-12-2006
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