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Re: [APD] Milwaukee controller and testing of CO2
You bring up a point I never considered... What is the best placement for
the probe? Mine is on the opposite side of the tank from my reactor.
> -----Original Message-----
> From: aquatic-plants-bounces at actwin_com
> [mailto:aquatic-plants-bounces at actwin_com] On Behalf Of
> Mariano F. Bonfante
> Sent: Wednesday, September 28, 2005 12:43 PM
> To: aquatic-plants at actwin_com
> Subject: Re: [APD] Milwaukee controller and testing of CO2
> After 10 years of no CO2 controller life, I finally acquire
> mine past July.
> Since then, life's easier. To know what's up with PH level I
> just take a glance to the MS 122 display.
> I can look for an industrial PH controller with a greater
> precision, but I think is a matter of solving a problem with
> the minimum resources.
> The hysteresis of my system round 0.1. If values are
> changing more radically there's an other issue, such as too
> much gas getting to tank, without the sufficient time to
> equalize the average value, or the probe is to far from the
> reactor/difusser. This type of controllers (on/off) enhanced
> they hysteresis when the error signal is getting earlier to
> the decision circuit. This is done by slowing down the
> process or by getting actual values asap.
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