50 L 34 L
Mechanical travel TET + 2mm min.
Housing anodized aluminium
Operating force 0.35N typical 2.50N typical
on request (standard model) (sealed model)
Shaft (free rotation) stainless steel
Termination 3 wires PTFE AWG-30 L = 300mm
on request cable or connector
Wiper precious metal multifinger
Sealing IP65 on request
50 L, 34 L
Vishay Sfernice
Document Number: 54011
Revision 21-Dec-01
www.vishay.com
26
Precision Linear Transducers, Conductive Plastic (REC)
FEATURES
• Measurement Range 25mm to 450mm
• High accuracy ± 1% down to ± 0.025%
• Essentially infinite resolution
• Long life
• Sealed on request
50 L 34 L
Theoretical electrical travel (TET = E) 25mm 25mm
in increments of 25mm 300mm 450mm
Independent linearity (over TET) ≤±1% - ≤± 0.1%
on request ≤± 0.05% for E ≥100mm
≤± 0.025% for E ≥200mm
Actual electrical travel (AET) see table 1
Ohmic values (RT) 400Ω/cm to 2kΩ/cm
Resistance tolerance at 20°C ± 20%
Repeatability ≤0.01%
Maximum power rating 0.05W/cm at 70°C, 0W at 125°C
Wiper current recommended: a few µA - 1mA max. continuous
Load resistance minimum 103x RT
Number of tracks 1; on request 2
Insulation resistance ≥1000MΩ500VDC
Dielectric Strength ≥500VRMS ≥750VRMS
50Hz 50Hz
ELECTRICAL SPECIFICATIONS
Operating life 50 million cycles typical
Temperature range - 55°C + 125°C
Sine vibration on 3 axes 1.5mm peak to peak or 15g - 10 Hz - 2000Hz
Mechanical shocks on 3 axes 50g - 11ms - half sine
MECHANICAL SPECIFICATIONS
PERFORMANCE
The 50 L and 34 L are compact, accurate and adaptable
motion transducers for both industrial and military markets.
TET = E AET TOL.
25mm E + 1mm ± 0.5mm
to 275mm
300mm E + 1mm ± 0.8mm
to 450mm
50 L, 34 L
Vishay Sfernice
Document Number: 54011
Revision 21-Dec-01 www.vishay.com
27
Precision Linear Transducers, Conductive Plastic (REC)
ELECTRICAL CONNECTIONS
TET = Theoretical electrical travel
AET =Actual electrical travel
MT = Mechanical travel
Terminals wire cable
3 Alim. (+): green blue
2 Wiper: red red
1 Alim. (-): yellow white
TET = E
AET
MT
L
ZZ0.50.5
Ø A
25.4 ± 1
Ø C ± 0.25
34 L 50 L
STANDARD MODEL DIMENSIONS in millimeters, general tolerance ± 1mm
DIMENSIONS 50 L 34 L
Shaft øA - 0 - 0
3.175 - 0.025 5 - 0.025
Body øC 12.7 19.05
Body Length L E + 41 E + 63
Tightening Zone Z 7 12
Table 2
Table 1
ACCESSORIES ON REQUEST - DIMENSIONS in millimeters, general tolerance ± 3mm
Clamp for 34L
Vishay Reference: CQ00051 Clamp for 50L
Vishay Reference: CQ00050
Ø 9
Ø 4.5
5.5
11 ± 0.3
11 ± 0.3
Ø 9
Ø 4.5
5.5
34
15
6.1
13
26
26
11
6.1
19
9.5
MODEL CODE B L øV W X Y TET
50 L W01565 L1 to L3 TET + 108.5 TET + 57.5 3 6 12 30 ± 2 25 to 75
L4 to L6 TET + 133.5 TET + 82.5 3 6 12 30 ± 2 100 to 150
34 L W03263 L1 to L5 TET + 151.6 TET + 82.8 5 8 18 42 ± 2 25 to 125
L6 to L10 TET + 173.6 TET + 104.8 5 8 18 42 ± 2 150 to 250
L11 to L12 TET + 230 TET + 161.2 5 8 18 42 ± 2 275 to 300
MODEL A L
34 L1 61.4
34 L2 93.6 TET + 119.5
34 L3 125.8
34 L4 158
50 L1 70
50 L2 116 TET + 97.8
50 L3 162
50 L4 208
50 L, 34 L
Vishay Sfernice
Document Number: 54011
Revision 21-Dec-01
www.vishay.com
28
SERIES
REC
MODEL
34
NUMBER
OF TRACKS
L
L = 1 track
LL = 2 tracks
LINEARITY
103
A: ±1 %
D: ± 0.1%
E: ± 0.05%
F: ± 0.025%
OHMIC
VALUE 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
Times 25mm
OPTION 2: DELIVERED WITH CLAMPS AND BINDER CONNECTOR 680
34 L ... W05013
OPTION 4: DOUBLE BALL JOINT
W03263 (34 L)
W01565 (50 L)
B
L
Y
Ø V
WX15
34 L 50 L
X = TET + 70
34.5
2
11.4 23
Ø 6.35 X 0.9
1/4-28 NEF-2A
11.1 on flats
6.35 on flats
Ajustable fixing
max clearance A
Ø 19.05
10
34.4 44.8
Ø 3.9
Precision Linear Transducers, Conductive Plastic (REC)
L
A13 max.
Ø 13 max
Table 4
Table 5
OPTION 1: SEALED (IP65)
W03280 (34 L)
W03242 (50 L)
L13 max.
Ø 13 max
MODEL L
34 L TET + 83.5
50 L TET + 70.5
Table 3
OPTION 3: SPRING LOADED SHAFT; OUTPUT BY SHIELDED CABLE
W01744 (34 L)
W01743 (50 L)
OPTIONS - DIMENSIONS in millimeters, general tolerance ± 1mm
