JPP Flow Meters

Banta-Carbona Irrigation District*Broadview Water District*Byron Bethany Irrigation District (CVPSA)*Central California Irrigation District*City of Tracy*Columbia Canal Company*Del Puerto Water District*Eagle Field Water District*Firebaugh Canal Water District*Fresno Slough Water District*Grassland Water District*Henry Miller Reclamation District #2131*James Irrigation District*Laguna Water District*Mercy Springs Water District*Oro Loma Water District*Pacheco Water District*Pajaro Valley Water Management Agency*Panoche Water District*Patterson Irrigation District*Pleasant Valley Water District*Reclamation District 1606*San Benito County Water District*San Luis Water District*Santa Clara Valley Water District*Tranquillity Irrigation District*Turner Island Water District*West Side Irrigation District*West Stanislaus Irrigation District*Westlands Water District*

    Each of the three Tracy penstocks has been outfitted with a four-path Accusonics 7510+ transit time flow meter.   The stated accuracy is ±0.5% and the repeatability is ±2.0%. Velocity (cubic feet per second) and total flow (acre-feet) information is transferred to a Chessell 6180A Paperless Graphic recorder and also to the facility SCADA system via Modbus.
    All three flow meters are situated adjacent to a set of access manhole approximately 650 feet downstream of the pumps. The transmitter/sensor elements are mounted inside the penstocks. The sensor cables pass through the penstock wall into a vault containing the manhole and terminate at an above ground panel board located between the west and middle vaults.
    The sensor locations  were determined by an Accusonics factory representative and the cable protection was installed per Accusonic’s specifications and installation drawings.
    Two flow meter panels handle the three penstocks with the west tube displayed on one and the center and east  tubes displaying on the second panel. All equipment is supplied by a UPS power supply/conditioner.
A galvanized steel shade structure was built to protect the panels from direct sun and also from the view of passing traffic on Kelso Road.
    All of the labor to install this operation was provided by the Water Authority's Engineering department, Canal Maintenance Tracy, Electric Shop, and the Machine Shop Tracy.

Photographer: Jessie Ixta
Date: Summer 2009
Project: Jones Pumping Plant Flow Meter Installation

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