Electronic Feedback Cylinders - Lifco Hydraulics USA

Transducer Specifications – RTContact Type TransducerLinear Potentiometer – Method of OperationsThe linear potentiometer device is rigidly attached to thecap end of the cylinder and runs the full stroke lengthinside a gun drilled piston rod. The transducer consists ofa hardened aluminum extrusion in a shallow channelframe shape. A resistive plastic substrate material is bondedto one side of the channel and a conductive plastic substrateto the opposite side. A sliding wiper contact assembly isattached to the cylinder piston. As the piston rod movesthrough the stroke, the contacts conduct variable voltagechanges from the resistive side to the conductive side.Application DescriptionsThis type of transducer provides accurate position feedbackfor low cycle, slow moving applications. When used inhydraulic applications, the transducer electric propertiesare dependent on nonconductive, noncontaminated operatingfluids while the mechanical properties are dependent onnonvolatile, noncorrosive operating fluids. When used inpneumatic applications, the transducer depends on properair filtration and drying to prevent contact wiper contamination.Avoid ‘slick’ type seal lubricants. The transducer mountingarrangement discourages infield repair. Duplicate cylinderswith this transducer are recommended for spares if theapplication requires immediate turnaround.Molded Cable AssemblyResistive Strip TransducerPressure Tight ConnectorWiper AssemblyTransducer Length = Stroke + 2 / "Straight CableAssembly3 81.60"2.50"90° CableAssemblyNOTE: 90° CableAssembly PositionNot AdjustableSpecificationsCharacteristicDescription/SpecificationSupply Voltage+5 Vdc to +50 Vdc, bipolar or unipolarCurrent Draw1 microAmp maximumDisplacement Range1" to 130", 1 ⁄8" incrementsNon-Linearity0.1% (1" to 46" stroke); 1.0% (47" to 130" stroke)Repeatability 0.001"Operating Temperature* 300°FOperating Pressure*5000 psi maximumTransducer Life500 million inches of travelCylinder Velocity20 in/sec maximum hydraulic; 50 in/sec maximum pneumaticProtection for Pressure Connectorand Cable AssemblyNEMA 6P; IP68 (when cable is mated to pressure connector)Washdown Pressure1000 psi (when cable is mated to pressure connector)Molded Cable Assembly22 AWG: DVC insulated, metallic braid fine stranded copper conductors, yellow PVCjacketed, 300 V, 3 amp, 105°C U.L. recognized, C.S.A. certifiedMaximum Cable Lengthfrom Cylinder to Signal20 feetConditioning ElectronicsMaximum Cable Length from 20 feet Voltage outputSignal Conditioning to User End 100 feet Current outputOutputRatiometric*Compare these specifications to cylinder specifications. Use the proper limiting specification.14