Andrew Clark wrote: > > I'm wondering if anyone out there knows where I could get a pH probe > with serial output and a water hardness probe with serial output.
(Note: I am not an expert on such matters. The information below I obtained from my father, as he does water analysis - among other things - for a living.) For a pH meter, try Fisher Scientific (a huge retailer), Hach (they make meters), or Pitsco (not too sure of that spelling). Most of the lab grade pH meters are coming with a computer interface - most of which are RS232. For a water hardness meter - no such thing. One way to emulate one is to find out what the chemistry of your water is and then you can calibrate a conductivity meter to show hardness, but that will only be accurate as long as the basic chemistry of the water stays fairly consistent. The only way to get a truly accurate reading of water hardness is to have the water sampled and analyzed. What are you wanting to do with these? If you could be more specific I can probably get more specific with answers. -- Mike Werner KA8YSD | "Where do you want to go today?" ICQ# 12934898 | "As far from Redmond as possible!" '91 GS500E | Morgantown WV | Only dead fish go with the flow.
