Series KIT LMF
www.vishay.com Vishay Sfernice
Revision: 17-Sep-12 1Document 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, precision 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 separate 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 μA - 1 mA max. (continuous)
Load resistance Minimum 103 x RT
Insulation resistance 1000 M, 500 VDC
Dielectric strength 750 VRMS, 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 typical/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 2Document 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, general 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
Legal Disclaimer Notice
www.vishay.com Vishay
Revision: 02-Oct-12 1Document Number: 91000
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