LMF v ishay sfernice document number: 54009 revision 14-dec-01 www.vishay.com 22 for technical questions, contact sfer@vishay .com conductive plastic motion transducer elements (kit) features ? large measurement range 25mm to 1000mm ? high accuracy 1% down to 0.025% ? long life - 50 000 000 cycles ? simple and flexible mounting ? essentially infinite resolution made in two separate parts: - the sensing element - the wiper. special designs available on request. . theoretical electrical angle (tet = e) from 25mm to 1000mm in increments of 25mm independent linearity (over tet) 1%; 0.1% on request 0.05% for e 100mm 0.025% for e 200mm actual electrical travel (aet) aet = tet + 2mm ohmic value from 400 ? /cm to 2k ? /cm resistance tolerance at 20oc 20% repeatability 0.01% maximum power rating 0.05w/cm at 40c 0w at 85c w iper current recommended: a few a 1ma max. continuous load resistance minimum 10 3 x r t insulation resistance 1000m ? , 500vdc dielectric strength 750vrms 50hz electrical specifications support of element fiberglass epoxy on request plastic moulding w iper (non insulated) precious metal multifinger on request insulated t erminals soldering pads on request by wires fixing glued: double face isotac on request screwed: holes in the support operating life 50 million cycles typical t emperature range - 55c + 125c mechanical specifications performance the LMF is a reduced bulk, precision motion transducer, designed for easy integration into equipment
LMF vish ay sfernice document number: 54009 revision 14-dec-01 www.vishay.com 23 for technical questions, contact sfer@vishay .com conductive plastic motion transducer elements (kit) series kit model lm conductor f f: plastic s: serigraphy linearity 103 a: 1% d: 0.1% e: 0.05% f: 0.025% ohmic v alue modifications w ... special feature code number theoretical electrical travel 3 first 2 digits are significant numbers 3rd digit indicates number of zeros ordering information d t imes 25mm standard model: LMF...w02851 13 8 2 2 1 12.2 1 1.15 6.35 2.4 5.2 2.4 0.3 1.6 working position 5.8 0.2 15 7 3.5 resistive track tet = e aet = tet + 2 10 0.5 soldering pads w iper travels l = tet + 18 max collector track silver area silver area dimensions in millimeters, general tolerance 0.2mm examples of special designs
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