DI is not 10 Mohm? Am I wrong? What is in there? -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Mike Bogden Sent: Wednesday, January 05, 2011 6:28 PM To: [log in to unmask] Subject: Re: [TN] Deionized water in misting fans and static electricity - Found word(s) remove list in the Text body - Found word(s) remove list in the subject Enough to drop the 10 mega ohm water to 500 ohms?? Mike B ----- Original Message ----- From: "Bev Christian" <[log in to unmask]> To: <[log in to unmask]> Sent: Wednesday, January 05, 2011 3:55 PM Subject: Re: [TN] Deionized water in misting fans and static electricity - Found word(s) remove list in the Text body - Found word(s) remove list in the subject Richard, Its needs a catalyst to form FAST, but even without it some is there, just not much. Bev -----Original Message----- From: Stadem, Richard D. [mailto:[log in to unmask]] Sent: Wednesday, January 05, 2011 4:48 PM To: TechNet E-Mail Forum; Bev Christian Subject: RE: [TN] Deionized water in misting fans and static electricity - Found word(s) remove list in the Text body - Found word(s) remove list in the subject Yes, but it needs a catalyst. So there would not be any during a quick probe measurement, at least not enough to affect the readings significantly. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Bev Christian Sent: Wednesday, January 05, 2011 3:36 PM To: [log in to unmask] Subject: Re: [TN] Deionized water in misting fans and static electricity - Found word(s) remove list in the Text body - Found word(s) remove list in the subject Carbon dioxide dissolving in the water CO2 + H2O -> H2CO3 Bev RIM -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D. Sent: Wednesday, January 05, 2011 4:34 PM To: [log in to unmask] Subject: Re: [TN] Deionized water in misting fans and static electricity - Found word(s) remove list in the Text body - Found word(s) remove list in the subject Paul, care to expand on that? Where would carbonic acid come from? -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Paul Edwards Sent: Wednesday, January 05, 2011 3:04 PM To: [log in to unmask] Subject: Re: [TN] Deionized water in misting fans and static electricity - Found word(s) remove list in the Text body - Found word(s) remove list in the subject Sounds like you were getting a little carbonic acid with the water collecting in the probe... Paul Paul Edwards Process/Quality Engineering Surface Art Engineering -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Mike Bogden Sent: Wednesday, January 05, 2011 12:04 PM To: [log in to unmask] Subject: Re: [TN] Deionized water in misting fans and static electricity - Found word(s) remove list in the Text body - Found word(s) remove list in the subject We used a conductivity probe and meter. Mike B ________________________________ From: Paul Edwards <[log in to unmask]> To: [log in to unmask] Sent: Wed, January 5, 2011 1:41:34 PM Subject: Re: [TN] Deionized water in misting fans and static electricity - Found word(s) remove list in the Text body Ok guys... remember your chem. & physics.... It doesn't matter what you put in the air stream as particulates, remember these are particulates not moisture vapor...The individual particles will charge in a moving air stream when there are different potential voltages around because the surface of the particular charges... Thunderstorms... updrafts sweep chargeable mass to collection areas prior to discharge via lightning... Also if I remember correctly ~300v/m atmospheric potential in a free open environment... And Mike... how did you measure that... Paul Paul Edwards Process/Quality Engineering Surface Art Engineering -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Herring Sent: Wednesday, January 05, 2011 11:25 AM To: [log in to unmask] Subject: Re: [TN] Deionized water in misting fans and static electricity - Found word(s) remove list in the Text body If you don't remove the minerals from the water, then the nozzle apertures will eventually clog. Steven E. Herring Engineering Manager Pennatronics 75 Technology Drive California, Pa 15419-0638 P 724-938-1800 x 214 F 724-938-1809 [log in to unmask] -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of R Sedlak Sent: Wednesday, January 05, 2011 2:23 PM To: [log in to unmask] Subject: Re: [TN] Deionized water in misting fans and static electricity Steve: It ain't clear that the DI is doing it, but it does make sense, since the DI is SO much less conductive, lacking any ions in it, that it could hold a charge a lot better than tap water. Maybe you want to consider using soft water, to eliminate the chlorides, but retain the ionic strength? Rudy Sedlak --- On Wed, 1/5/11, Steve Gregory <[log in to unmask]> wrote: From: Steve Gregory <[log in to unmask]> Subject: [TN] Deionized water in misting fans and static electricity To: [log in to unmask] Date: Wednesday, January 5, 2011, 10:31 AM This may be an off the wall question but here goes. We have some misting fans that we use for humidification that we've just recently put in a deionized water source for. Now it seems that there's a static charge being generated at the fans that I've never noticed before. Could it be possible that we're generating a charge at the fans because of the DI water? Steve ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. 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