1. Althen Sensors
  2. Sensors
  3. Linear position sensors
  4. Intrinsically safe position sensors
  5. H115 Rugged submersible linear inductive position sensor

H115 Rugged submersible linear inductive position sensor

Compact and intrinsically safe linear position sensor with non-contact inductive technology, ideal for harsh and hazardous environments.


Key features

  • Intrinsically safe for gas and dust
  • IP68 sealed for 10 bar submersion
  • Custom travel range from 5 mm to 800 mm
  • High accuracy and repeatability
  • Made of 316 stainless steel
  • Optional sprung-loaded push rod

Performance highlights

The H115 is a robust, submersible linear position sensor designed for environments where durability, accuracy, and explosion safety are critical. Utilizing non-contact inductive technology, it eliminates mechanical wear while maintaining excellent stability and linearity across its full stroke.

Usage conditions

Built with a 316 stainless steel body and push rod, the H115 performs reliably under extreme conditions including full submersion (IP68 10 bar) and hazardous dust or gas zones (Class I/II/III Division 1). Operating temperatures range from -40°C to +80°C.

Possible applications

  • Subsea displacement monitoring
  • Valve or actuator position feedback
  • Oil & gas drilling equipment
  • Offshore or onshore hazardous installations
  • Test benches requiring explosion-proof sensors

Advantages of choosing this product

The H115 offers superior mechanical strength, a compact housing, and flexible configuration for installation. It is calibrated to customer-specified stroke lengths and offers both axial and radial cable exit options. With intrinsically safe EX08 electronics and CSA certification, it ensures safe operation in explosive atmospheres.

Other important features

  • Linear output proportional to stroke
  • Customizable push rod fittings: M8 thread, dome, magnetic tip
  • Optional rod eye mounting
  • EMC protection built-in
  • Compatible with Althen’s G005 galvanic barrier
  • Infinite resolution, low noise <0.02% FSO

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
Technology Non-contact inductive
Measurement range 5 to 800 mm (custom calibrated)
Linearity ≤ ±0.25% (up to 450 mm), ≤ ±0.5% (above)
Frequency response > 10 kHz
Resolution Infinite
Output 0.5 – 4.5 V ratiometric
Power supply +5 VDC nominal (4.5–5.5 V)
Operating temperature -40°C to +80°C
Sealing IP68 (10 bar), optional IP69K
Material 316 stainless steel
Push rod diameter 12.6 mm
Certifications CSA Ex ia IIC T4 Ga / Ex ia IIIC T135°C Da
EMC EN 61000-6-2, EN 61000-6-3
Shock / Vibration 40 g / 10 g (IEC 68-2)

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