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After installing the pulley - mounted potentiometers, it became apparent that not only do <br />chart installers loosen the thumb screw for adjustments, lifting the beaded float cable off <br />the pulley is another commonly employed practice. SPDC has encountered repeated <br />instances of the potentiometer offset getting off a distance equal to one or multiple times <br />the distance between bead notches in the pulley after CDWR staff had installed new <br />paper charts. Presumably this will be a problem that goes away as CDWR develops a <br />confidence level in the radio /control monitoring and telemetry system and agrees to <br />discontinue the redundant datalogging using paper charts. <br />Figure 5 shows a McCrometer meter with pulse output module installed on a well <br />discharge pipe. The pulse output generator is installed at the base of the mechanical <br />meter. Installing this module requires a shaft extension for the mechanical meter as well <br />as longer screws to secure the mechanical meter to the meter base. <br />Figure 5. A Pulse Output Module Installed on a McCrometer Meter at a J & E Well <br />Despite the availability of on -site electrical power, all radio /control installations in the <br />project are powered using solar charged systems. This was done to eliminate the <br />potential of damaging surge voltage coming in through power supply lines. The CDI <br />radio /control units feature an on -board charge controller to maintain battery voltage <br />within an appropriate range. <br />In addition to the flow monitoring and logging functions the radio /control units are <br />currently performing, they may be programmed to perform expanded functions in the <br />future. The capability exists to perform tasks such as monitoring of pump panel fuses, <br />panel or motor temperature, timed startup and/or stoppage of the wells, remotely <br />controlled well startup or stoppage, etc. Figure 6 shows the radio /control unit installation <br />at a J &E well site. <br />8 <br />