ph meter

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ernesto_maglasang Participant Join Date: Sep 2008 Posts: 3	ph meter 09/12/2008 3:40 AM
	how much the standard pressure ranges of ph meter use in caustic soda injection system.
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user-deleted-1105 Guru Join Date: May 2007 Location: Harlow England Posts: 16512 Good Answers: 670	#1 Re: ph meter 09/12/2008 4:24 AM
	I don't understand the question. A ph meter wouldn't be subjected to any pressure. A ph probe may be subjected to some pressure as it will be installed in the liquid flow, but usually at a low flow, low pressure test point. The pump which is dosing the system may be working agains pressure from 0-10 bar or more... Del __________________ health warning: These posts may contain traces of nut.
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EnviroMan Guru Join Date: Nov 2007 Location: Gone to Alabama with my banjo on my knee... Posts: 5595 Good Answers: 20	#2 Re: ph meter 09/13/2008 8:29 AM
	Welcome aboard! I don't quite understand either. the pH is typically expressed as if at standard temperaure and pressure. I can't think of a condition under which pressure would cause pH to vary, except a pressure so blazing high the ions won't dissociate! Lower pressure doesn't influence the bonding to cause more dissociation. And if you mean will the pressure of the injection system influence the meter itself, I doubt it, but there are probe systems built for rough service (some are very delicate). Are you measuring the injected caustic or the resulting solution? __________________ Veni, vidi, video - I came, I saw, I got it on film.
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ernesto_maglasang Participant Join Date: Sep 2008 Posts: 3	#3 In reply to #2 Re: ph meter 09/13/2008 4:42 PM
	i am measuring the injected caustic depend on the level of ph of the liquid flowing to the process.
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#4 In reply to #3 Re: ph meter 09/17/2008 8:29 AM
	....then the pressure in the line at the injection point is the pressure that the pH probe will need to be rated to withstand. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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You might be interested in: pH Electrodes, pH Transmitters, pH Instruments

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