ID-225 Oil Thickness Sensor for use with PS220/N4

ID-225 Oil thickness detector

This sensor from Leakwise measures the thickness and monitors the build-up of hydrocarbons on water.  It can be used for monitoring and controlling oil layers in the following applications: remediation control; skim tanks; monitoring oil/water separators;wastewater sewer monitoring.  There are two sub-models ID-225/100 & ID-225/200 for different maximum measured oil layer thicknesses.



1 mm (0.04 in) 

Water level variation

Minimum: 30 cm (~12 in) (33 cm for ID-225/200) 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 to 70 °C (32 to 158° F); no freezing

Air temperature

-10 to 80° C (14 to 176° F)


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




Oil monitoring range   

1 to 100 mm (0.4 to 4.0 in)

1 to 200 mm (0.4 to 8.0 in)


Ø 87 mm (3.43 in), height 150 mm (5.9 inch)

Ø 87 mm (3.43 in), height 300 mm (11.8 in)


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


Stilling well in 1 m & 2 m long sections, which can be assembled to any length 


Specifications vary for other sub-models - please enquire

oil sheen detector ID-223-500 from Leakwise