RE: Data Acquisition

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Terrell Fritz <terrellfone-at-twfpowerelectronics-dot-com> 


$1328.00!!!  Yips!!!  Looks like it is even "used"...

http://cgi.ebay-dot-com/ws/eBayISAPI.dll?ViewItem&item=2587737742

I paid $710 for a practically new one with card...

Retail is $1477 + $455...  Maybe they aren't going cheap on e-bay after 
all...  They sure are nice things.  Maybe everyone figured that out.  Or 
everyone wants to measure Tesla coils these days :o))

Cheers,

         Terry



At 02:02 PM 1/19/2004, you wrote:
>Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>
>
>Hi Dave,
>
>You might consider something like this that shows up on ebay now and then:
>
>http://cgi.ebay-dot-com/ws/eBayISAPI.dll?ViewItem&item=2587737742&category=25402
>
>I think they go for about $1000 on ebay with card, but the trick is to 
>sell it again once you are done with it (of course, you will want to keep 
>it ;-))  It would easily do all the stuff with a 20 Channel 34901a card.
>
>http://we.home.agilent-dot-com/cgi-bin/bvpub/agilent/Product/cp_Product.jsp?NAV_ID=-11250.536881544.00&LANGUAGE_CODE=eng&COUNTRY_CODE=ZZ
>
>Lot of money, but it would make it all so simple....  Far better than 
>getting $600 of those meters (be careful of the auto power off and 
>batteries running down too).
>
>You would need transducers for such things as magnetic field, capacitance, 
>inductance...  but with that big 6.5 multimeter and all, those transducers 
>would probably be very simple (like a 555C timer).  This is what everybody 
>in the industry uses now days.
>
>Cheers,
>
>         Terry
>
>
>At 01:11 PM 1/19/2004, you wrote:
>>Hi Terry,
>>
>>I'm trying to do true data capture over minutes and hours (maybe days for
>>some experiments).  The parameters I'm looking for are potential, current,
>>resistance, magnetic field, capacitance, inductance and electrostatic
>>potential.  None of my experiments in the near term will be while the coil
>>is operating.  I'm measuring components over time in order to better
>>understand how they react to ambient conditions.
>>
>>I plan to purchase the electrostatic potential meter at
>>http://www.trifield-dot-com/SurfaceDCVoltmeter.htm
>>
>>I'm thinking about purchasing the digital multimeter at:
>>http://www.hobbytron-dot-net/product998.html
>>But the problem with this unit is that it works on the serial port. Also,
>>I'm not sure if I can run more than one instance of the software at a time
>>if I operated 4 units simultaneously.
>>
>>Other than this, I'm not sure which software to use or what other sensors to
>>buy.
>>
>>Dave