Series REC 38 L

www.vishay.com

Vishay Sfernice

Revision: 19-Mar-2021

1

Document Number: 54010

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

Precision Linear Transducers, Conductive Plastic, Up to 150 mm

The 38 L is a very compact model especially designed for

precise measurement of short travels.

FEATURES

• Measurement range 12.5 mm to 150 mm

• High accuracy ± 1 % down to ± 0.1 %

• Long life

• Essentially infinite resolution

• Very small dimension: external diameter = 9.52 mm

• Material categorization: for definitions of compliance

please see www.vishay.com/doc?99912

Note

• Nothing stated herein shall be construed as a guarantee of quality or durability

QUICK REFERENCE DATA

Sensor type

LINEAR, conductive plastic

Output type

Wires

Market appliance

Professional

Dimensions

9.52 mm dia.

ELECTRICAL SPECIFICATIONS

Theoretical electrical travel (TET)

From 12.5 mm to 150 mm see Table 1

Actual electrical travel (AET)

AET = TET + 1 mm

Independent linearity (over TET)

≤ ± 1 % - ≤ ± 0.5 %

≤ ± 0.25 % for E ≥ 25 mm

≤ ± 0.1 % for E ≥ 50 mm

Repeatability

≤ 0.01 %

Ohmic values (RT)

From 400

Ω/cm to 4 kΩ/cm

Resistance tolerance at 20 °C

± 20 %

Maximum power rating

0.05 W/cm at 70 °C, 0 W at 125 °C

Wiper current

Recommended: a few μA - 1 mA max. (continuous)

Load resistance

Minimum 103 x RT

Insulation resistance

≥ 1000 MΩ, 500 VDC

Dielectric strength

≥ 500 VRMS, 50 Hz

MECHANICAL SPECIFICATIONS

Mechanical travel (MT)

MT = TET + 3 mm ± 1 mm

Housing

Anodized aluminum

Operating force

0.35 N typical

Termination

3 wires PTFE AWG 26

length: 300 mm

Wiper

Precious metal multifinger

PERFORMANCE

Operating life

25 million cycles typical/1 Hz/T° = 20 °C ± 5 °C/80 % TET

Temperature range

-55 °C to +125 °C

Sine vibration on 3 axes

1.5 mm peak to peak or 15 g - 10 Hz - 2000 Hz

Mechanical shocks on 3 axes

50 g -11 ms - half sine