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ABBREVIATIONS AND SYMBOLS <br /> chassis ground <br /> earth ground <br /> – negative or ground terminal <br /> S2 ohm, resistance <br /> µF microfarad (10-6farad) <br /> + or+5V positive terminal <br /> sine wave <br /> AC alternating current <br /> amp ampere <br /> AVO apparatus to verify operation <br /> CPT Constant Pressure Turbine <br /> DC direct current <br /> EPA U.S. Environmental Protection Agency <br /> FLA full-load amps <br /> FTA field-test apparatus <br /> ft-Ib foot-pound <br /> FXT a Red Jacket line-leak detection system <br /> GND ground <br /> gph; gpm gallons per hour; gallons per minute <br /> hp horsepower <br /> I <br /> Hz hertz <br /> I.S. Intrinsic Safety <br /> ISO International Standards Organization <br /> LED light-emitting diode <br /> LLD line-leak detector <br /> MOV metal-oxide varistor, surge protection <br /> msec millisecond <br /> N-m Newton-meter <br /> NEC National Electrical Code <br /> NFPA National Fire Protection Association <br /> psi; psig pounds per square inch; pounds per square inch gauge <br /> PVC polyvinyl chloride <br /> RJ Red Jacket <br /> THHN a UL designation for oil-, gasoline-, and water-resistant wiring <br /> UL Underwriters Laboratories Inc. <br /> V volt <br /> VAC voltage—alternating current <br /> VDC voltage—direct current <br /> 3 <br /> Contents,Figures,About This Manual... vi ARE260-240 Rev.A ♦ 6/97 <br />