S520 Submersible rotary sensor

High-accuracy inductive sensor with non-contact technology for underwater applications up to 350 bar.

Key features

Calibrated output range from 15° to 160°
Durable 316 stainless steel housing
Infinite resolution and low torque <20 mNm
Pressure sealed to 350 bar (IP68)
Multiple analog output types available
High reliability with MTBF > 350,000 hours

Performance highlights S520 S520 Submersible rotary sensor

The S520 submersible rotary sensor delivers high-resolution angle feedback using advanced inductive sensing technology. With no moving electrical contacts, it ensures long operational life and eliminates wear. The output is factory-calibrated to a user-defined angle range between 15° and 160°, with excellent linearity (≤ ±0.25% FSO) and infinite resolution. The unit supports multiple analog outputs such as 0.5–4.5V, ±5V, ±10V, 0.5–9.5V, and 4–20mA (2-wire and 3-wire versions).

Usage conditions

The S520 is fully sealed to IP68 and pressure-balanced for underwater use up to 350 bar. Operating and storage temperature ranges are both from -4°C to +50°C. The housing and shaft are made from 316 stainless steel, ensuring corrosion resistance even in harsh subsea environments.

Possible applications:

ROV joint position feedback
Underwater robotic articulation
Subsea valve actuation
Industrial marine automation
Pressure chamber test setups
Oil & gas equipment motion tracking

Other important features:

EMC compliant to EN 61000-6-2 and EN 61000-6-3
Shock resistance up to 40g
Vibration resistance up to 10g
Standard 4-pin IP68 wet-mate connector with optional cable assemblyReversible output characteristic available

Standard 3D model and STEP files available on request

Do you need this sensor for your next project?

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Technical Specifications

Specification	Value
Body diameter	60mm, 92mm flange diameter
Independent linearity	≤ ± 0.25% FSO @ 20°C (up to 100°)
Output angle range	15° to 160° (factory calibrated)
Temperature coefficients	< ± 0.01%/°C gain, < ± 0.01%FS/°C offset
Pressure resistance	Sealed to 350 bar
Operating temperature	4°C to +50°C
Storage temperature	-4°C to +50°C
Frequency response	>10 kHz, >300 Hz (4–20 mA)
Resolution	Infinite
Noise	< 0.02% FSO
Torque	< 20 mNm static
Shock resistance	40 g
Vibration resistance	10 g
MTBF	350,000 hrs @ 40°C Gf