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The sensor is compatible with a broad range of conductive and non-conductive liquids. It is also suitable for high, low or intermediate level detection in practically any tank - large or small. Installation is simple and quick through the tank top, bottom or side. With no moving parts, the sensor is ideal for interstitial applications. The pull ring facilitates easy installation in double-wall tanks and pipes, yet can be removed for use in 1/4" NPT holes. SENSOR SENSORSENSORSENSORSENSORSENSOR OPERATING OPERATINGOPERATINGOPERATINGOPERATINGOPERATING PRINCIPLE PRINCIPLEPRINCIPLEPRINCIPLEPRINCIPLEPRINCIPLE The sensor has the capability of discriminating between conductive and non-conductive liquids, such as water and gasoline. Conductivity probes are used in conjunction with an optical prism, consisting of a light-emitting diode and phototransistor. The prism detects liquid via a loss of light intensity on the phototransistor (due to refraction). The sensor has two outputs: one for conductive liquid and one for non-conductive liquid. Both outputs are TTL/CMOS compatible. WARNING WARNINGWARNINGWARNINGWARNINGWARNING The nature of the sensor is that it is a non-voltage producing device, containing limited energy-storing components. However, since its primary use is in a hazardous location, an appropriate intrinsically safe interface device must be used and installed in strict accordance with the National Electrical Code and applicable OMEGA technical brochure and instruction bulletin. Failure to observe this warning could result in serious injury or damages. UNPACKING UNPACKINGUNPACKINGUNPACKINGUNPACKINGUNPACKING Remove the Packing List and verify that you have received all equipment. If you have any questions about the shipment, please call the OMEGA Customer Service Department at 1-800-622-2378 or (203) 359-1660. When you receive the shipment, inspect the container and equipment for any signs of damage. Note any evidence of rough handling in transit. Immediately report any damage to the shipping agent. NOTE NOTENOTENOTENOTENOTE The carrier will not honor any claims unless all shipping material is saved for their examination. After examining and removing contents, save packing material and carton in the event reshipment is necessary. INSTALLATION INSTALLATIONINSTALLATIONINSTALLATIONINSTALLATIONINSTALLATION - -----Running RunningRunningRunningRunningRunning of ofofofofof Field FieldFieldFieldFieldField Wire WireWireWireWireWire A. The conductors of the intrinsically safe circuit should be sealed in a rigid metal conduit at the point where the wiring enters the hazardous area. The wiring and contacting device should be such that conductive dusts in the area will not close the circuit in place of the contacts. B. Hazardous area field wiring will store energy due to distributed capacitance and inductance in proportion to its length. The maximum run of cable has been defined at 750 feet between barrier and sensor. C. Shielded cable is not required, but if used in the application, the shield must be returned to ground. The shield must be connected to barrier earth ground. D. Intrinsically safe wiring must be installed in accordance with Article 504 of the NEC, ANSI/NFPA-70 or CEC Part 1, as applicable. All intrinsically safe wiring must have 0.01 inch minimum insulation thickness. Non-intrinsically safe wiring cannot be run in conduit or open raceways together with intrinsically safe wiring. U.L. U.L.U.L.U.L.U.L.U.L. Entity EntityEntityEntityEntityEntity Parameters ParametersParametersParametersParametersParameters Terminal TerminalTerminalTerminalTerminalTerminal Vmax VmaxVmaxVmaxVmaxVmax Imax ImaxImaxImaxImaxImax Ci CiCiCiCiCi Li LiLiLiLiLi Red/Black 38V 150mA .052. 0 Green/Black 38V 150mA .052. 0 White/Black 38V 150mA .052. 0 For ForForForForFor CSA CSACSACSACSACSA intrinsic intrinsicintrinsicintrinsicintrinsicintrinsic safety safetysafetysafetysafetysafety approval, approval,approval,approval,approval,approval, the following barriers must be used: the following barriers must be used:the following barriers must be used:the following barriers must be used:the following barriers must be used:the following barriers must be used: SBG111950 SBG111950SBG111950SBG111950SBG111950SBG111950 and andandandandand SBG111954 SBG111954SBG111954SBG111954SBG111954SBG111954 Zener ZenerZenerZenerZenerZener Barrier BarrierBarrierBarrierBarrierBarrier Wiring WiringWiringWiringWiringWiring Diagram DiagramDiagramDiagramDiagramDiagram Zener Barrier* Vmax . ..... Voc (barrier) Imax . ..... Isc (barrier) Ci + Ccable < (CA barrier) Li + Lcable < (LA barrier) RedRedRedRedRed GreenGreenGreenGreenGreen WhiteWhiteWhiteWhiteWhite DC Power Supply GNDGNDGNDGNDGND BlackBlackBlackBlackBlack Earth Ground Conductive Liquid Output Zener Barrier** + _____ Earth Ground Note NoteNoteNoteNoteNote Source voltage not greater than 250 VAC. Zener barriers must be installed in accordance with barrier manufacturer's instructions. Non-Conductive Liquid Output *Use O...