1. Althen Sensors
  2. Sensors
  3. Linear position sensors
  4. Intrinsically safe position sensors
  5. G114 Submersible linear inductive position sensor

G114 Submersible linear inductive position sensor

Intrinsically safe sensor for underwater applications with high accuracy and durability, ideal for demanding measurement tasks.


Key features

  • Intrinsically safe for hazardous gas/vapour
  • Custom travel from 5 to 800 mm
  • Fully submersible up to 100 m depth
  • Compact stainless steel housing
  • High linearity and EMC protection
  • Multiple mounting and rod tip options

Performance highlights G114 Submersible linear inductive position sensor

The G114 is a compact, high-performance linear inductive position sensor designed for use in hazardous and submersible environments. With infinite resolution, excellent linearity (≤ ±0.25% FSO), and outstanding EMC protection, it provides precise position feedback even under harsh conditions.

Usage conditions

This sensor is fully submersible and intrinsically safe, certified for Class I, Zone 0, and Division 1 hazardous gas environments. With an IP68 (10 bar) and IP69K sealing rating, the G114 can operate underwater up to 100 meters. It performs reliably in temperatures from -40°C to +80°C, and features a robust stainless steel 316 housing.

Possible applications

  • Subsea hydraulic cylinder monitoring
  • Underwater vehicle actuator feedback
  • Marine and offshore position detection
  • Chemical plant valve positioning
  • Dams and hydropower gate control
  • Test rigs in explosion-hazard zones

Advantages of choosing this product

The G114 provides robust, wear-free inductive measurement in extreme conditions. Its custom travel lengths, various push rod and mounting configurations, and compatibility with the Althen G005 galvanic barrier amplifier make it a flexible and safe choice for OEM engineers and test system designers.

Other important features

  • Captive or non-captive push rods
  • Spring return options available
  • Ratiometric 0.5–4.5 V analog output
  • Compatible with 3-wire or 5-wire configurations
  • CSA-approved for intrinsically safe installations
  • MTBF of 350,000 hours at 40°C

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
Measurement range 5 mm to 800 mm (factory set)
Output 0.5 - 4.5V ratiometric (5V supply)
Supply voltage +5V (4.5 - 5.5 VDC)
Linearity ≤ ±0.25% (up to 450 mm)
Frequency response >10 kHz
Resolution Infinite
Noise <0.02% FSO
Intrinsic safety rating Ex ia IIC T4 Ga / AEx ia IIC T4 Ga
Temperature range (operation) -40°C to +80°C
Environmental sealing IP68 (10 bar), IP69K
Material Stainless steel 316
Maximum depth 100 m
Vibration IEC 68-2-6: 10g
Shock IEC 68-2-29: 40g
EMC compliance EN 61000-6-2, EN 61000-6-3
Cable length (max) Up to 150 m (with 5-wire)
MTBF 350,000 hrs at 40°C

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