ID-225 Oil Sheen Sensor




Data Sheet



A Leakwise system consists of a controller and one or more sensors.
The ID-225 sensor has a high-frequency transmitter mounted on a float that maintains its position precisely at the liquid/air interface, despite fluctuations in liquid level up to 45 m (150 ft.) variation, with 30 cm (12. In) minimum water level. Oil layer measurement is already linear at the sensor.

Leakwise ID-225 is available in two sub-models according to maximum measured oil layer thickness:

ID-225/100 for 1 – 100 mm (0.04 – 4.0 in)
ID-225/200 for 1 – 200 mm (0.04 – 8.0 in)

A single ID-225 sensor is controlled by the analog PS-220 Controller, which has two field-adjustable alarm points:

Low oil alarm – Detection of a first predefined layer thickness of hydrocarbons
High oil alarm – Detection of a hydrocarbon layer at a second predefined thickness

Controller relays are used for local and remote alarms and control, and a 4-20mA output indicates the oil thickness. Continuous built-in diagnostics monitor sensor operation. The SLC-220 digital controller handles up to four sensors. A stilling well is recommended for all ID-225 installations (available as an optional accessory).


ID-225 Sensor Specifications


Summary: Floating sensor for monitoring thickness of hydrocarbons & organic solvents in wet sumps.


Oil Monitoring Range: ID-225/100: 1 – 100 mm (0.04 – 4.0 in); ID-225/200: 1 – 200 mm (0.04 – 8.0 in)

Resolution: 1 mm (0.04 in)

Water Level Variation: Minimum: 30 cm (~12 in) above well/tank/sump bottom.

Maximum: 45 m (~150 ft.).

Water Lateral Velocity: ~20 cm/sec (~8 in/sec) when installed in a stilling well

Water Temperature: 0 – 70 °C (32 – 158 °F); no freezing

Air Temperature: -10 – 80 °C (14 – 176 °F)


ID-225/100: Diameter: 87 mm (3.43 in), height: 235 mm (9.3 in); fits into 100 mm (4.0 in) stilling well

ID-225/200: Diameter: 87 mm (3.43 in), height: 384 mm (15.1 in); fits into 100 mm (4.0 in) stilling well

Materials: Hydrocarbon resistant polymers, 316 stainless steel.

Integral Cable: 10 m (~33 ft.) supplied with sensor, additional length to order up to 50 m (164 ft.) total

Accessories: Stilling well in 1 m and 2 m long sections, which can be assembled to any required length.

PS-220 Controller Specifications and Options


PS-220 Description: PS-220 Controller is an analog signal processor and power supply in a

NEMA 4 enclosure and supports a single ID-221 sensor.

Temperature: Ambient temperature range: -40 – 85 °C (-40 – 185 °F)

Cable length to Sensor Up to 1,200 m (3,937 ft.) subject to hazardous area restrictions.

PS-220/RL/LI Two alarm relays with dry contacts and one fail relay contact: SPDT rated 4A (3A for fail

contact) at 250 VAC or 30 VDC, normally open and normally closed, and four status indication lights: Water, Oil, Air/High Oil and Fail. Includes built-in diagnostics.

Wiring Connections Terminal blocks: 14 AWG maximum for sensor and 4-20 mA output wires; 12 AWG

maximum for power and relays wires.


Enclosure Options:

-N4 for NEMA 4X (IP65): 305 x 195 x 120 mm (12.0 x 7.7 x 4.7 in) 2 Kg (4.4 lb.);

-N7 for NEMA 7: 278 x 259 x 166 mm (11.0 x 10.2 x 6.5 in) 8.5 Kg (18.7 lb.);

-Exd for Ex d: 355 x 276 x 200 mm (14.0 x 10.9 x 7.9 in), 14 Kg (30.9 lb.);

-BP: without an enclosure, to be mounted in a local cabinet. 190 x 180 x 130 mm, 1 Kg.

Input Power Options 220 or 110 VAC (50 – 60 Hz) or 9 – 36 VDC (@ 5 Watts); may also be solar powered.

-420 4-20 mA analog output proportional to hydrocarbon thickness up to 25 mm (1.0 in), current source.

-420/BG Bar-Graph display (20 bars) of hydrocarbon thickness in addition to 4-20 mA analog output.

-CEN Zener Safety Barriers to allow installation of the sensor in hazardous areas.

-AUD Audio alarm option (available in weather-proof or explosion-proof enclosure

Other Controllers – Refer to separate data sheets

SLC-220: Digital Signal Processor for up to four ID-220 Series sensors support, with various output

options, including relays, lights, 4-20 mA, LCD, Modbus in RS-232 and RS-485 communication, and remote cellular connectivity. Controllers – Refer to separate data sheets

Sensor and PS-220 Controller Certifications

ID-225 Sensor: ATEX Intrinsically Safe: II1G Ex ia IIC T4 Ga -40 °C to +70 °C. Also: IECEx, UKEX and cETLus

PS-220 Enclosure For hazardous areas:

North America – NEMA 7, Class I, Div 1, Groups B, C & D; NEMA 4

Europe ATEX & IECEx – II2(1)GD, Ex db [ia Ga] IIC T6 Gb IP66

Combined System: Approved for operation in hazardous locations when Zener Safety Barriers are added

Performance 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

Manufacturing ISO 9001:2015 Certified


Get in Touch

Need Help With A Product?

We work closely with a diverse network of manufacturers to bring you a wide range of instrumentation equipment options, ensuring that you find the perfect fit for your requirements.