1. Althen Sensors
  2. Sensors
  3. Linear position sensors
  4. Linear inductive postion sensors
  5. P138 Mid stroke slim-line linear position sensor

P138 Mid stroke slim-line linear position sensor

Compact and robust linear sensor with mid-stroke range for industrial applications. Ideal for OEMs needing reliable position feedback in tight spaces.


Key features

  • Compact 19 mm stainless steel body with IP67 protection
  • Customizable travel range from 51 mm to 100 mm
  • Infinite resolution and excellent repeatability
  • Output options: voltage and current (0.5–4.5V, 0.5–9.5V, 4–20 mA)
  • EMC compliant (EN 61000-6-2, EN 61000-6-3)
  • Shock resistance up to 40 g and vibration up to 10 g

Performance highlights from the P138 Linear Inductive Position Sensor

The P138 mid stroke slim-line linear position sensor offers high reliability, accuracy, and stability over a wide temperature range. With non-contact inductive technology, it eliminates wear and ensures exceptional longevity, making it ideal for both industrial and scientific environments.

Usage conditions

Housed in a rugged Ø19 mm stainless steel body, the sensor is sealed to IP67 and suitable for harsh environments. It operates reliably from -40°C to +125°C and offers a high vibration and shock tolerance.

Possible applications

  • OEM machinery and equipment
  • Test benches and fixtures
  • Valve and actuator position feedback
  • Robotics and automation systems
  • Scientific instrumentation

Advantages of choosing this product

The P138 offers excellent performance in tight spaces where a slim and short-bodied sensor is needed. Its flexible output configurations and high EMC performance make it suitable for integration into existing control systems without additional conditioning.

Other important features

  • Travel customization from factory (51–100 mm in 1 mm increments)
  • Reverse output characteristic available
  • Mounting options: flange, rod-eye, or body clamps
  • Plunger options: spring-loaded, threaded, magnetic tip
  • Multiple connector and cable configurations

Do you need this sensor for your next project?

Request a no-obligation quote or send us your contact details for a free, no-obligation consultation. Our sales engineers will then contact you within a maximum of 1 to 2 working days.

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Not exactly what you are looking for? We offer standard sensors, but can also help you with sensors adapted for you or a fully customised measurement solution. Contact us for advice or pricing.

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Technical Specifications

Specification Value
Body diameter 19 mm
Travel range 51 mm to 100 mm
Output options 0.5–4.5V, 0.5–9.5V, 4–20mA
Supply voltage 5V or 24V
Resolution Infinite
Linearity ≤ ±0.1% FSO @20°C (optional Z-code)
Frequency response >10 kHz (-3 dB)
Operating temperature -40°C to +125°C
Sealing IP67
Vibration resistance 10 g
Shock resistance 40 g
EMC performance EN 61000-6-2, EN 61000-6-3
MTBF 350,000 hrs @ 40°C

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