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  4. Intrinsically safe inductive rotary sensors
  5. G505 Intrinsically safe slim-line rotary position sensor

G505 Intrinsically safe slim-line rotary position sensor

Compact and explosion-proof rotary sensor for tight industrial spaces requiring precise angle feedback up to 160°.


Key features

  • Intrinsically safe for explosive gas zones
  • Factory-set measurement angle from 15° to 160°
  • Non-contact inductive technology
  • High linearity and EMC protection
  • Compact stainless steel body Ø19 mm
  • Sealed to IP67 standard

Performance highlights

The G505 is a slim-line rotary sensor designed for hazardous environments requiring angular displacement feedback. With its intrinsically safe EX08 electronics, it is CSA-approved for Class I, Zone 0 / Division 1 gas/vapour atmospheres. The sensor delivers linear analog output over a customer-defined angle between 15° and 160°, with full 360° mechanical freedom. It features infinite resolution, low torque, and excellent repeatability.

Usage conditions

The G505 performs reliably in ambient temperatures from -40 °C to +80 °C, with IP67 sealing to resist dust and moisture. It must be used with a certified galvanic isolation amplifier (e.g. Althen G005) to maintain compliance in hazardous zones.

Possible applications

  • Valve position feedback in oil & gas
  • Rotary control in process automation
  • Tank level angle sensors in chemical environments
  • Compact OEM applications needing angle sensing
  • Explosion-proof robotics or actuator systems

Advantages of choosing this product

OEMs and integrators benefit from the G505’s compact 19 mm diameter, robust stainless steel build, and adaptable mounting options (flange or servo). Calibration is done per project, ensuring optimal output range, while maintaining safety and performance standards.

Other important features

  • Output: 0.5–4.5 V ratiometric
  • Input: 5 VDC (±10%)
  • Current: 10 mA nominal
  • Frequency response: >10 kHz
  • EMC: EN 61000-6-2, EN 61000-6-3
  • Torque: < 15 mNm static
  • MTBF: 350,000 hrs at 40°C
  • Mounting: Flange (default) or servo
  • Cables: 3-core or 5-core (for long runs >10m)

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
Measurable angle (calibrated) 15° to 160° (customizable)
Linearity ≤ ±0.25% FSO @ 20°C (up to 100°)
Output 0.5–4.5 V ratiometric with supply
Supply voltage 5 VDC (±10%)
Supply current 10 mA typical, 12 mA max
Body diameter 19 mm
Body length 45.4 mm (to mounting face)
Shaft diameter 8 mm (Ø) x 4 mm
Frequency response > 10 kHz (-3 dB)
Resolution Infinite
Torque < 15 mNm static
EMC performance EN 61000-6-2 / 61000-6-3
IP rating IP67
Temperature range -40°C to +80°C operating
Intrinsic safety classification Ex ia IIC T4 Ga / AEx ia IIC T4 Ga
Certification Class I, Zone 0 / Div. 1 (Groups A-D)
MTBF 350,000 hrs @ 40°C

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