Position Transducers - Firstmark Controls

1 Miniature and Sub-Miniature Sizes Off-the-Shelf and CustomDesigns Operating Temperatures from -65 to +125 C Environmentally Tested to DO-160D, ED-14D, and MIL-STD-810E For Linear, Angular, Rotary, 2D, and 3D Motion Analog or Digital Electrical Outputs Qualified for Commercial/Military Aircraft and Manned SpaceVehicle Use Vehicle, Aerospace, Industrial Control, OEM, Medical, and Test &Measurement Applications"The Flex ible Alternative to LVDTs and Linear Potentiometers"Rugged, Miniature Position TransducersSolution GuideEnvironmental ControlsInspection SystemsQuantity/Level SensingVehicle and Crash TestFlight Data RecorderRugged, Miniature Position TransducersSolution Flex ibili t y ..2 Technology Over view ..2 How They Are Used ..3 Typical Applications ..3 Product Matri x ..4 Key Innovations ..6 String Potentiometer and String Encoder Engineering Guide ..6 More Information ..6 Addi tional Resources ..7 Company Background ..8 Table Of ContentsTechnology OverviewHow Position Transducers WorkPosition Transducers conver t mechanical motion into an electrical signal that may bemetered, recorded, or transmit ted.

2 Firstmark Controls Position Transducers consist of astainless steel displacement cable wound on a threaded drum that is directly coupled toa precision, long-life sensor. Operationally, the Position transducer is mounted in a fixedposition and the ex tension cable is at tached to a moving object. The a xes of movementfor the ex tension cable and moving object are aligned with each other. As movementoccurs, the displacement cable ex tracts and retracts. An internal, engineered springmaintains tension on the displacement threaded drum rotates a precision,long-life sensor that produces an elec-trical output propor tional to thedisplacement cable travel. Theoutput is measured toreflect the Position ,direction, or rateof motion of themoving FlexibilityThese all-environment miniature displacement Transducers are also referred to as drawwire Transducers , string pots, string encoders, cable ex tension Transducers , and yo yopots. Firstmark Controls Position Transducers are noted for their small size,rugged per formance, accuracy, flexible mounting, and easy installation.

3 Their inherenthigh-strength flexible cable allows linear, angular, rotar y, t wo-dimensional, and three-dimensional motion to be y919-956-4203 fax: 919-682-37863 Typical ApplicationsExperimentsActuator PositionRailSuspensionMaterial HandlingVehicle Stabilit yEar thquake MonitoringNautical/OffshoreControlsActua torsEnginesIndustrial MachineryMaterial HandlingRoboticsPackagingAssembly EquipmentControl SystemsBiomechanicsMan-Machine Inter faceEntr y and EgressProstheticsOr thoticsErgonomicsEntertainment and SportsBicycles/MotorcyclesAmusement Park RidesAnimationSpor ts EquipmentFirearmsSimulatorsVir tual Realit yStage PositioningHow They Are UsedPosition Transducers are used in a broad range of Position , displace-ment, and velocit y measurement applications to: ensure distance traveled continually sense location or relative Position indicate levels act as limit sensors control actuators through Position sensing act as a signal generator for recording Position versustime, cycle rate, and magnitude of random cycle events monitor relative motion indicate eventsAuto/Truck/Bus/Off-HighwaySuspensi onVehicle DynamicsPower trainNV&HRide and HandlingDriver BehaviorSafet y SystemsCrash TestingMotorspor tsDriver Controls Durabilit yPassenger Comfor tLinkagesBraking SystemsAircraftControl SystemsFlight DynamicsLinkagesEngineLanding GearBraking SystemsFlight Data RecorderFlight SimulatorsAerospaceLaunch SystemsSolar Panel DeploymentEnvironmental ControlsDocking and CaptureBellows LevelTrain Suspension MonitoringVehicle Side Impact TestingMedical Diagnostic Equipment919-956-4203 fax.

4 919-682-37861 Product MatrixRelative SizeData SheetElectrical Output(In (mm))Nominal Mass(oz (g))Series150170173174175176160161162D60 D61D62161H162H180-08038Lw w w w w w w w w (voltage divider)analog(voltage divider)analog(voltage divider)digital(quadrature)analog(voltag e divider)analog(voltage divider)voltage divider, bridge, voltage conditioner, 4-20mA, velocit y, or digital(quadrature)analog (voltage divider) ordigital (quadrature)MaximumMeasurement Range(inches (mm)) ( ) (165) (1080) (1095) (1080) (254) (50800) (540) Outline Dimensions(inches(mm))Best OperatingTemperature Range(oF (oC))Best FrequencyResponse (g s)Best (15) 1 (28) (Series 170)4 (113) (Series 160)6 (170)(Series D60)7 (198) (Series 161H)2 (57)64 (1814) 3 (85) x x (19 x 19 x 10).96 dia. x (24 dia. x 11) (Series 170) x x (46 x 56 x 64) (Series 160) x x (46 x 56 x 64)(Series D60) x x x 76 x 73(Series 161H) dia. x (38 x 43) x x (229 x 229 x 127) dia.

5 X (43 dia. x 47)-85 to +257(-65 to +125) -85 to +257(-65 to +125) -67 to +257(-55 to +125) -4 to +212(-20 to +100) -67 to +257(-55 to +125) -67 to +257(-55 to +125) -40 to +185(-40 to +85) -40 to +185(-40 to +85)49 6 to 40 less than 50 less than 50 greater than 50 910 20 NEMA 3S / IP54 NEMA 3S /IP54 NEMA 4X / IP66 NEMA 4X / IP66 NEMA 4X / IP66 NEMA 3S / IP54 NEMA 4 / IP65 NEMA 12 / IP53 (NEMA 4 / IP66 optional)w w divider,bridge, voltage conditioner, 4-20mA, velocit y, or digital (quadrature) (2159)66 (170)(Series 60) x x (46 x 56 x 94) (Series 60)-40 to +185(-40 to +80) less than 50 NEMA 4 specifications are subject to change without prior w w divider,voltage conditioner, 4-20mA, velocit y, or digital (quadrature) (2159)6 (170) dia. x ( dia. x )-4 to +185(-20 to +85)10 NEMA 12 / IP53 (NEMA 4 / IP66 optional) Potentiometer and String Encoder Engineering GuideWould you like to receive a 12-page, full-color copy of the "String Potentiometer and String EncoderEngineering Guide"?

6 If so, complete a web form at w w you will be qualified for aFREE downloadable (electronic) copy. This publication will get you up and running on cable-actuateddisplacement-sensing technology, uses, designs, benefits, and InnovationsFirstmark Controls has pioneered a broad range of techniques and designs to improve displacement sensing ease of use, accuracy, and miniaturization. A few of these innovations are shown (1974) universalmounting base provides 2-a xisrotational capabilit y in a compact form , proven, dual-redundant designs providehigh-reliabilit y in cylinders andaccumulators. Applicationsinclude space vehicles, aircraf t,and eviromental control cable-tension, ultra-low-iner tia Model 174-0321T posi-tion transducer has the highestfrequency response for all sub-miniature Position ConnectTMsensor-to-drum technology eliminatesthe use of backlash-causingtorsion springs, clutches,gears, and other drumsare of fered only by FirstmarkControls and enhancerepeatabilit y per formance bynot allowing cable overlap norcable designs fit whereother technologies are toolarge.

7 Series 150 products arethe world's soon: the Series 8long-range Position transducerof fers an enviromentally-pro-tected displacement cable exit,enhanced repeatabilit y, andincreased lifecycle capabilit guideallows cable ex traction directionto change "on the fly " withoutre-orienting the Position SizeMore InformationFor complete information including data sheets, fully-dimensioned installation drawings, and CAD solid models, visit w w Or, contact us by phone (919-956-4203), fa x (919-682-3786), or e-mail fax: 919-682-37867 Additional Resources For more information on displacement measurement and sensors, review these publications: Selecting Position Sensor Total Cost of Application Note for Aircraf Application Note for Ground Vehicles/Transpor Application Note for Industrial Control/OEM Thermal Ef fect Catenar y Cur ve (Cable Sag) Sinusoidal Motion Linearit y Cable Stretch Cost of Ownership Zero-Span Calculator Voltage Divider and Power Calculator Installation Position Measurement & Control Newslet Evaluation Position Transducer Request (Q) Firstmark Controls919-956-4203 919-682-3786 (fa Telecom DriveCreedmoor, NC 27522 USAR epresented by:Company BackgroundLeading The Way In PositionMeasurementFirstmark Controls was founded and launched with theacquisition of SpaceAge Control's Position transducerproduct line.)

8 Today Firstmark Controls ' continues aproud tradition in the development and production ofinnovative, small-size Position the 1970's vir tually all , Canadian, andEuropean aerospace companies use our Position trans-ducers in their research, development, and test ten these products are designed and manufactured tocustom specifications. In the late 1980's an auto racingteam began using our Position Transducers to monitorthrot tle movement and suspension travel. This useresulted in the adoption of the products in a broad rangeof vehicle test and measurement projects includinganthropomorphic dummy instrumentation, impact test-ing, and control Controls ' products benefit customers in over20 industries and in over 40 countries, including thelargest auto manufacturing companies and the largestaerospace companies. Our products are used ondiverse applications such as of f-road heav y equipment,manned space vehicles, and Formula 1/Indy/NASCAR race cars.

9 Environmentally tested to commercial aircraf tand militar y standards, Firstmark Controls ' positiontransducers are the products of choice for demandingmeasurement Position transducer use:YF-12 aircraf t dynamic testing designs set the standardfor small size, ruggedness, Sensors for a Demanding Worl