1. Althen Sensors
  2. Sensors
  3. Linear position sensors
  4. Intrinsically safe position sensors
  5. E112 Intrinsically safe linear gauge head sensor

E112 Intrinsically safe linear gauge head sensor

Compact and robust linear sensor for gauge head positioning in hazardous dust and gas environments, tailored to your stroke length.


Key features

  • Intrinsically safe to Ex II 1GD, ATEX / IECEx / UKEX certified
  • Linear output over 5–50 mm custom stroke range
  • Rugged stainless steel housing, IP67 rated
  • Spring-loaded plunger with domed end
  • Compact Ø19 mm body, fits tight spaces
  • Temperature stability across -40 °C to +80 °C

Performance highlights E112 Intrinsically safe linear gauge head sensor

The E112 intrinsically safe gauge head sensor offers non-contact linear measurement with exceptional accuracy and durability. Designed for use in hazardous gas and dust environments (Ex II 1GD), it uses inductive technology to eliminate wear, delivering repeatable performance even under extreme conditions.

Usage conditions

With robust IP67 sealing and stainless steel construction, the E112 operates reliably from -40 °C to +80 °C and stores up to +125 °C. It is ideal for environments requiring certified sensors in ATEX/IECEx zones 0 and 20.

Possible applications

  • Gauge head positioning in industrial test benches
  • Scientific measurement setups in hazardous zones
  • OEM integration in equipment for ATEX environments
  • R&D sensor systems for linear travel feedback
  • Monitoring systems in dusty or explosive atmospheres

Advantages of choosing this linear sensor

Althen’s E112 combines compact design with high precision, offering customizable travel ranges, spring-loaded design, and multiple mounting configurations. Fully EMC-protected and easy to install, it supports both three- and five-wire modes for flexible integration, especially in long cable runs.

Other important features

  • Infinite resolution
  • Frequency response >10 kHz
  • Independent linearity ≤ ±0.25% FSO
  • Signal output: 0.5–4.5 V ratiometric
  • Axial or radial mounting with ½ inch UNF thread
  • Full compatibility with Althen X005 galvanic isolator

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
Body length (axial / radial) 160.7 mm / 169.5 mm
Mounting thread ½” x 20 UNF (59 mm thread length)
Travel range Factory set 5–50 mm
Output signal 0.5–4.5 V ratiometric with 5V supply
Linearity ≤ ±0.25% FSO
Resolution Infinite
Frequency response >10 kHz (-3dB)
Operating temperature -40 °C to +80 °C
Storage temperature -40 °C to +125 °C
Intrinsic safety classification Ex II 1GD, Ex ia IIC T4 Ga, Ex ia IIIC
Housing Stainless steel, IP67 rated
Plunger Spring-loaded, domed end
Connectors Axial/radial M12, 3 or 5 core, cable gland
Output calibration Custom-calibrated travel range

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