A while back I asked about a dream system for my electrical/solar training program at the CC I teach at. I think an instrument like the one you linked to fits that bill. I sent an email requesting a price quote to the company just now. Checking the price via google seems a touch more expensive than I can justify spending but if they can come down slightly for a training institution I will purchase one and get back to you on how it works. Typically companies give a discount to schools so we shall see.
Jesse Sent from my iPhone > On Aug 31, 2015, at 4:45 PM, William Miller <[email protected]> wrote: > > Allan: > > I know this has come up before on the list, but I was hoping someone had > gained experience since the last time this was posted. > > I am familiar with the optical refractometers. We order them by the dozen. > I have taken thousands of readings with them. They have distinct > difficulties in application: > > Over the years we have gained more large battery arrays to maintain like this > one. These arrays have lots of cells, up to three strings at 48 volts > nominal. That is 72 cells. Testing all of these cells every month (and we > test that often) is very time consuming. You have to pull a sample from each > battery, apply the sample, flip the cover carefully so as not to spray acid, > hold the device up to the eye, note the reading, record the reading on paper, > wipe down the instrument with a shop towel (that has ever-increasing > toxicity), and then prepare another sample. I don’t like flipping acid > around and putting it near my or my employees eyes. The display is hard to > read with safety glasses. The display has poor resolution. The sample > easily runs off the glass if you tilt the instrument. Acid gets on the paper > and then vectors into the office. The entries have to be typed into a > permanent record. All considered, a time consuming and dangerous process. > > I was hoping to hear from someone who actually uses one of the higher end > digital units. It appears no one on this list has. > > William > > > > <image003.jpg> > Lic 773985 > millersolar.com > 805-438-5600 > > From: RE-wrenches [mailto:[email protected]] On > Behalf Of Allan Sindelar > Sent: Sunday, August 30, 2015 10:29 PM > To: RE-wrenches > Subject: Re: [RE-wrenches] Digital Hydrometer > > William, > Why bother, when a refractometer is cheaper, does a better job, self-corrects > for temperature, and won't be broken when you pull it off of your truck? > Here's an example, quickly found on eBay, if you're not familiar with these: > http://www.ebay.com/itm/Robinair-75240-Coolant-and-Battery-Refractometer-/131591979786?hash=item1ea37e430a&item=131591979786&vxp=mtr > > This has come up before on this list. > Allan > > Allan Sindelar > [email protected] > NABCEP Certified PV Installation Professional > NABCEP Certified Technical Sales Professional > New Mexico EE98J Journeyman Electrician > Founder (Retired), Positive Energy, Inc. > 505 780-2738 cell > > > On 8/30/2015 5:08 PM, William Miller wrote: > Friends: > > We are maintaining more vented battery systems. I am contemplating purchase > of a digital hydrometer. Does anyone have any experience with one of these? > > Thanks in advance, > > William Miller > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
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