1. Althen Sensors
  2. Sensors
  3. Linear position sensors
  4. Linear inductive postion sensors
  5. P112 Gauge head position sensor

P112 Gauge head position sensor

Compact, spring-loaded linear sensor for high-precision gauge head applications in industrial and scientific environments.


Key features

  • Non-contacting inductive technology for wear-free operation
  • Travel ranges from 5 mm to 50 mm, calibrated per customer request
  • Rugged stainless steel housing with IP67 sealing
  • High linearity: ≤ ±0.25% FSO @ 20°C
  • Output options: voltage or current, including 4–20 mA
  • EMC protection and high vibration/shock resistance

About the P112 Linear Inductive Position Sensor

The P112 (also known as gauge head position sensor) is a robust and cost-effective linear position sensor designed for high-precision gauge head applications in demanding industrial and scientific environments. Using non-contacting inductive technology, it ensures exceptionally long operational life by eliminating mechanical wear.

High performance & customization

Each unit is factory-calibrated to a customer-specified travel range between 5 mm and 50 mm, ensuring tailored accuracy and responsiveness. It features infinite resolution, excellent linearity (≤ ±0.25% FSO), and a high frequency response of over 10 kHz, making it ideal for dynamic measurement tasks.

Rugged & reliable

Built with a stainless steel body and plunger, the P112 is engineered for resilience in harsh conditions. It is IP67-rated, resistant to shock (40 g), vibration (10 g), and operates reliably across a wide temperature range from –40°C to +125°C.

Installation made easy

Installation is simple via a ½-inch UNF mounting thread, and includes two lock nuts. The spring-loaded plunger with a domed end provides a consistent contact point. Flexible connection options include M12 connectors, cable glands, and cable boots, all rated IP67.

Output options

The P112 offers flexible electrical output configurations:

  • Voltage outputs (0.5–4.5V, 0.5–9.5V)
  • Ratiometric (5V supply)
  • Current loop (4–20 mA, 3-wires
  • This ensures easy integration into analog control systems across industries.

Applications

Ideal for:

  • OEM equipment requiring accurate position control
  • Gauge heads for industrial machinery
  • Test & measurement setups in laboratories
  • Custom engineering systems needing compact sensors

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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Talk to our experts

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
Body length (axial/radial) 160.7 mm / 166–169.5 mm
Mounting thread ½ inch UNF
Plunger extension Calibrated travel + 3.3 mm
Spring force 1.5–4.5 N
Independent linearity ≤ ±0.25% FSO @ 20°C
Temp. coefficient < ±0.01%/°C gain & offset
Frequency response > 10 kHz (-3 dB)
Resolution Infinite
Noise < 0.02% FSO
Operating temperature -40°C to +125°C
Storage temperature -40°C to +125°C
Sealing IP67
EMC compliance EN 61000-6-2, EN 61000-6-3
Vibration / Shock 10 g / 40 g
MTBF 350,000 hrs @ 40°C (Gf)
Output options 0.5–4.5V, 0.5–9.5V, 4–20mA
Supply voltages +5V or +24V (depending on config.)
Connector types M12 axial/radial, cable gland/boot

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