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ph meter

 
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ghettoman



Joined: 02 Apr 2002
Posts: 115
Location: romania
Post02 Apr 2003 7:01   ph meter
anyone build such a metter.did you have any schematics?
thanks
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House_Cat



Joined: 21 Feb 2002
Posts: 1332
Helped: 274
Post02 Apr 2003 7:38   
Take a look at the replies to previously posted message at:

http://www.elektroda.pl/eboard/viewtopic.php?t=26041&highlight=
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mozcam



Joined: 07 Apr 2002
Posts: 18
Location: turkey
Post02 Apr 2003 17:00   
i did it with only one chip"opa128"from texas instruments and you can find schematic in datasheet
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mostrengo



Joined: 27 Mar 2002
Posts: 125
Location: LSA
Post02 Apr 2003 21:42   
try this


http://213.97.130.124/home/index.htm


have a good one

most

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toreador



Joined: 05 Dec 2002
Posts: 15
Location: Espaņa
Post03 Apr 2003 8:20   Re: ph meter
I have got an PH meter with an easy circuit make with OP129 (ti.com). But temperature compensation in made via software.
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Analyzer



Joined: 18 Nov 2001
Posts: 409
Post03 Apr 2003 22:36   
Hi,

Try to request op129 samples from ti.They can send samples and also request sample codes.

Analyzer
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