From: Gerald Fisher
Sent: Wed Jul 20 11:48:57 2016
To: Ryan Hepler
Subject: RE: Totalizer flow meter calibration
Importance: Normal
Will likely look at adding that into the master plan for immediate fixes. I want mag meters. I also want redundancy in the system so we will need to look at how to accomplish that in a manifold type layout.
Regards,
Gerald Fisher, P.E. | Public Works Director
City of Molalla
117 N Molalla Ave. | PO Box 248 |Molalla, OR 97038
Office: 503.829.6855 | Direct: 503.759.0218
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From: Ryan Hepler [mailto:rhepler@cityofmolalla.com]
Sent: Wednesday, July 20, 2016 11:09 AM
To: 'Gerald Fisher' <gfisher@cityofmolalla.com>
Subject: Totalizer flow meter calibration
Gerald,
I wanted to let you know that I had Whitney Equipment out here this morning to calibrate our Totalizer flow meter (20”). Since there is no bypass on this water line and we cannot shut it off to do a “zero cal” we tried to strap on an additional flow meter to do a verification of our flow meter accuracy. This was unsuccessful also. So as of now we will not be able to calibrate this flow meter until we add some sort of bypass or secondary water line. This may be the reason that the flow meter has not been calibrated since the install in 1998. This meter is used for total flows leaving the reservoir (to town) and is the meter we would use to compare with meter reads to calculate water loss like we spoke about last week. As of now the meter is working, we just cannot calibrate it and/or check the accuracy. We can speak more about this later if you would like.
Ryan Hepler
City of Molalla
Water Treatment Operator
503-829-5408