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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>Jeff has a pretty good point – if you ‘assume’ the instrument is accurate at birth and the readings are consistent, you might just be OK. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>An additional thought: given the relatively low cost to make and the relatively high level of importance to you, you might want to make two [or more…] from the get-go. Then, you would have both a spare AND something to compare!<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>----------------<o:p></o:p></p><p class=MsoNormal>All the best,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Al Fuller<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> Shop-talk <shop-talk-bounces@autox.team.net> <b>On Behalf Of </b>Jeff Scarbrough<br><b>Sent:</b> Wednesday, November 10, 2021 4:57 AM<br><b>To:</b> Pat Horne <patintexas@icloud.com><br><b>Cc:</b> Shop List <shop-talk@autox.team.net><br><b>Subject:</b> Re: [Shop-talk] Measuring ozone<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>It may not be as important to be accurate as it is to be repeatable. If the machine is working and you get a reading, then as long as you get the same reading, you could assume the machine is working at the same level.<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Tue, Nov 9, 2021, 22:10 Pat Horne <<a href="mailto:patintexas@icloud.com">patintexas@icloud.com</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=MsoNormal>Al,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>That’s what I planned to do but it will need calibration or at least verification. I don’t have a good handle as to how accurate the sensors are to the published specs. <br><br>I suppose I could purchase a second sensor from a different manufacturer & compare the readings. If they come close to matching it should be close enough to being “Calibrated “.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Peace,<o:p></o:p></p></div><div><p class=MsoNormal>Pat<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Pat Horne <o:p></o:p></p><div><p class=MsoNormal>We support Habitat for Humanity<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><br>On Nov 9, 2021, at 8:56 PM, Al Fuller <<a href="mailto:alfuller194@gmail.com" target="_blank">alfuller194@gmail.com</a>> wrote:<o:p></o:p></p></div><div><p class=MsoNormal><o:p></o:p></p><div><p class=MsoNormal style='margin-bottom:12.0pt'>Pat, have you considered making one? A raspberry pi or Arduino base with an inexpensive sending might do the trick.<o:p></o:p></p><div><p class=MsoNormal>________________<br>Best Regards,<br>Al Fuller<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Mon, Nov 8, 2021, 1:51 PM Pat Horne <<a href="mailto:patintexas@icloud.com" target="_blank">patintexas@icloud.com</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal style='margin-bottom:12.0pt'>I need an inexpensive way to measure ozone concentration from time to time. <br><br>I have an ozone generator that I’d like to use to deodorize a vacation rental after guests check out who have done rather odorous cooking, as well as attempting some level of sterilization. <br><br>I can put together an inexpensive meter using available components but I have no way to calibrate it. None of the local environmental companies either don’t mess with ozone, they can’t be bothered or charge an arm & a leg. <br><br>Thanks in advance. <br><br>Peace,<br>Pat<br><br>Pat Horne <br>We support Habitat for Humanity<br><br>_______________________________________________<br><br><a href="mailto:Shop-talk@autox.team.net" target="_blank">Shop-talk@autox.team.net</a><br>Donate: <a href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a><br>Suggested annual donation $12.96<br>Archive: <a href="http://www.team.net/pipermail/shop-talk" target="_blank">http://www.team.net/pipermail/shop-talk</a> <a href="http://autox.team.net/archive" target="_blank">http://autox.team.net/archive</a><br><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/shop-talk/alfuller194@gmail.com" target="_blank">http://autox.team.net/mailman/options/shop-talk/alfuller194@gmail.com</a><o:p></o:p></p></blockquote></div></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'>_______________________________________________<br><br><a href="mailto:Shop-talk@autox.team.net" target="_blank">Shop-talk@autox.team.net</a><br>Donate: <a href="http://www.team.net/donate.html" target="_blank">http://www.team.net/donate.html</a><br>Suggested annual donation $12.96<br>Archive: <a href="http://www.team.net/pipermail/shop-talk" target="_blank">http://www.team.net/pipermail/shop-talk</a> <a href="http://autox.team.net/archive" target="_blank">http://autox.team.net/archive</a><br><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/shop-talk/fishplate@gmail.com" target="_blank">http://autox.team.net/mailman/options/shop-talk/fishplate@gmail.com</a><o:p></o:p></p></blockquote></div></div></body></html>