Oil sheen sensor for marine applications

ID-227 Oil sheen sensor

wave rider float maintains position
minimal maintenance
early detection

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The LEAKWISE ID-227 Oil Sheen Sensor for marine applications is used for the early detection, warning and control of oil leaks and spills in off-shore applications including intake towers of desalination plants, oil tanker loading bouoys and piers, oil rigs and lagoons.

The ID-227 is also deployed in lakes and rivers, open channels and retention ponds.

The ID-227 system consists of a:

  • Sensor with a high frequency transmitter mounted on a wave rider float
  • Separate controller
  • Cable connecting the sensor and controller (wired model only)
The wave rider float is designed to maintain the position of the detecting antenna at the liquid/air interface, despite fluctuations in the water level due to waves and tide. It has two field adjustable alarm points:
  • Low oil alarm — Detection of a predefined layer of hydrocarbons
  • High oil alarm — Detection of a hydrocarbon layer at a second predefined thickness

The ID-227 is used in conjunction with one of three controllers, depending on the application.

  • The PS-220 Controller is an analog signal processor and power supply in a NEMA 4 enclosure, and supports a single ID-220 Leakwise sensor.
  • The SLC-220 Digital Signal Processor for Multiple (2 / 4 standard, more in a network) ID-220 Series sensor support, with various output options, including relay, lights, 4-20 mA, LCD, Modbus in RS-232 and RS-485 communication, and cellular remote connectivity.
  • The WSP-220 Wireless communication – Point-to-Point data radio.


Detection range

0.3 to 20 mm (0.01 to 0.79 in) of hydrocarbon on water or brine

Minimum water depth   

30 cm (~12.0 in)

Tide range

Determined by mooring design and implementation

Working wave height

Maximum 2 m (6.6 ft)


Up to 1.5 knots

Survival conditions

Extreme sea conditions, depending on appropriate mooring


Designed and supplied by customer

Water temperature

0 to 70 °C (32 to 158 °F); no freezing

Air temperature

-10 to 80 °C (14 to 176 °F)

Sensor materials

Hydrocarbon resistant polymers, 316 stainless steel

Wave rider materials

Hydrocarbon resistant polymers, 316 stainless steel


Wave rider: Ø: 900 mm (35.4 in); height: 300 mm (11.8 in); weight 10 kg (22.0 lb)

Integral cable

20 m (~66 ft.) supplied with sensor, first 10 m is a floating cable


ATEX Intrinsically Safe: II1G Ex ia IIC T4 Ga -40 °C to +70 °C. Also: IECEx and CETLUS

Combined with PS220/N4, approved for operation in hazardous location.


EPA - Conforms to Spill Prevention, Control and Countermeasure (SPCC) - Oil Pollution
Prevention regulation (40 CFR part 112), and EPA/530/UST-90/009 - Leak Detection Methods
TÜV - Type approval in accordance with WHG (Water Resources Law) § 19 h


ISO 9001:2015 Certified


Specifications may be subject to change without prior notice