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TABLES <br />METER CALIBRATION AND MAINTENANCE FREQUENCY <br />METERI FREQUENCY WORK TO BE PERFORMED <br />EQUIPMENT (See Work Codes Listed Below) <br />Quarterly Semi-Annual CA CL FL IN LU PT <br />Annual <br />Venturi Meters X X X X X <br />(1 )(1 ) <br />Magnetic Meters X X X X <br />(2) (2)(2) <br />Yokagowa DIP X X X X X <br />Transmitters <br />Rosemount DIP X X X X X <br />Transmitters <br />Honeywell X X X X <br />Recorders <br />Water Level Sensors X X X X <br />(Pressure Transducers) <br />SCADA Electronics X X <br />AGM Electronics X X <br />NLS Digital Displays X X <br />Electrostatic 24V DC X X <br />Power Supplies (3) <br />ASCO Solenoids X X X X <br />(4) <br />WORK CODES: <br />CA = CALIBRATE; CL = CLEAN; FL = FLUSH; IN = INSPECT; LU = LUBRICATE; PT = PITOT TUBE TEST. <br />NOTES: <br />(1) Inspection and flushing requirements for Venturi meters refer to the pressure tubing from the meter to the <br />differential pressure transmitter. <br />(2) May calibrate using clamp-on meter where conditions allow. Inspection and cleaning requirements for <br />magnetic meters refer to the sensors or probes that are inserted through the pipe walL. <br />(3) Adjust voltage if necessary. <br />(4) Replace rubber ware as needed.