series kit lmf www.vishay.com vishay sfernice revision: 17-sep-12 1 document number: 54009 for technical questions, contact: sferprecisionpot@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 conductive plastic motion transducer elements (kit), up to 1000 mm the lmf is a reduced bulk, pre cision motion transducer, designed for easy integration into equipment. features ? measurement range 25 mm to 1000 mm ? high accuracy 1 % down to 0.025 % ? good repeatability ? simple and flexible mounting ? essentially infinite resolution ? made in two se parate parts: ? - the sensing element ? - the wiper ? special designs available on request ? material categorization: for definitions of compliance please see www.vishay.com/doc?99912 quick reference data sensor type linear, conductive plastic output type solder pads market appliance industrial dimensions l x 15 mm x 1.6 mm (with l = tet + 18 mm) electrical specifications theoretical electrical angle (tea = e) from 25 mm to 1000 mm in increments of 25 mm independent linearity (over tet) ? 1 %; ? 0.1 % on request ? 0.05 % for e ?? 100 mm ? 0.025 % for e ? 200 mm actual electrical travel (aet) aet = tet + 2 mm ohmic value from 400 ? /cm to 2 k ? /cm resistance tolerance at 20 c 20 % repeatability ? 0.01 % maximum power rating 0.05 w/ cm at 40 c 0 w at 85 c wiper current recommended: a few a - 1 ma max. (continuous) load resistance minimum 10 3 x r t insulation resistance ? 1000 m ? , 500 v dc dielectric strength ? 750 v rms , 50 hz mechanical specifications support of element on request fiberglass epoxy plastic moulding wiper (non insulated) on request precious metal multifinger insulated terminals on request soldering pads by wires fixing on request glued: double face isotac screwed: holes in the support performance operating life 25 million cycles typi cal/1 hz/t = 20 c 5 c/80 % tet temperature range - 55 c to + 125 c
series kit lmf www.vishay.com vishay sfernice revision: 17-sep-12 2 document number: 54009 for technical questions, contact: sferprecisionpot@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 dimensions in millimeters, genera l tolerance 0.2 mm examples of special designs ordering information/description kit lm f 3 d 103 w... e. series model conductor theoretical electrical travel linearity ohmic value modifications lead finish f: plastic s: serigraphy times 25 mm a: 1 % ? d: 0.1 % ? e: 0.05 % ? f: 0.025 % first 2 digits are significant numbers 3rd digit indicates number of zeros special feature code number sap part numbering guidelines lmf 3 d 103 w.... model tet linearity ohmic value special features standard model: lmf...w02851 13 8 2 2 1 12.2 11.15 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 wiper travels l = tet + 18 max. collector track silver area silver area
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