1. Althen Sensors
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  3. Linear position sensors
  4. Intrinsically safe position sensors
  5. G101 Intrinsically safe linear position sensor

G101 Intrinsically safe linear position sensor

Compact and robust linear sensor with stainless steel housing, ideal for harsh and hazardous environments.


Key features

  • Intrinsically safe for Zone 0, Class I, Division 1
  • Stroke range up to 800 mm
  • IP65/IP67 protection rating
  • Stainless steel housing and rod
  • Infinite resolution, high accuracy
  • CSA certified for gas/vapour atmospheres

Performance highlights G101 Linear inductive position sensor

The G101 is a highly reliable, intrinsically safe linear position sensor designed for use in hazardous gas or vapour environments. With non-contacting inductive technology, it offers infinite resolution and stable linear output. It supports strokes from 5 mm up to 800 mm, with outstanding linearity (≤ ±0.25% FSO up to 450 mm and ≤ ±0.5% beyond).

Usage conditions

Designed to operate between -40°C and +80°C, the G101 is certified for Class I, Zone 0 and Division 1 (Groups A-D), making it ideal for industrial, scientific, and OEM use. It features a rugged stainless steel body and rod, EMC protection, and is sealed to IP65 or IP67, depending on the connector or cable configuration.

Possible applications

  • Industrial automation in ATEX/IECEx areas
  • Valve and actuator position feedback
  • Oil and gas installations
  • Chemical plant monitoring
  • Hazardous test environments

Advantages of choosing this sensor

The G101 delivers robust performance in explosive environments. Its compact, durable design allows easy installation in space-limited or harsh areas. The sensor is individually calibrated to the required stroke length and comes with a wide range of mechanical and electrical configurations, including pre-wired and connector versions.

Other important features

  • Spring-loaded push rod options (extend/retract)
  • Captive or non-captive push rod
  • Multiple output types (0.5–4.5V ratiometric)
  • Galvanic isolation amplifier recommended
  • CSA certified EX08 electronics

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Technical Specifications

Specification Value
Stroke range 0-5 mm to 0-800 mm
Output signal 0.5–4.5 V ratiometric
Supply voltage +5V (4.5–5.5 V)
Intrinsic safety Class I, Zone 0, AEx ia IIC T4 Ga
EMC compliance EN 61000-6-2, EN 61000-6-3
Vibration 10 g (IEC 68-2-6)
Shock 40 g (IEC 68-2-29)
Resolution Infinite
Linearity ≤ ±0.25% FSO (≤ 450 mm) / ≤ ±0.5% (>450 mm)
Temp range (operation) -40°C to +80°C
Temp range (storage) -40°C to +125°C
Enclosure rating IP65 / IP67
Material Stainless steel body and push rod
Connections 3-core or 5-core cable, M12 or DIN43650 connectors
Certifications CSA Approved (EX08 electronics)

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G103 Short stroke linear position sensor (intrinsically safe)

  • Intrinsically safe zone 0
  • Short body, easy mounting
  • Travel set 2–50 mm
Datasheet View product