ID-225 Oil Sheen Sensor

Applications

Leakwise ID-225 sensor continuously measures varying layers of hydrocarbons on the surface of the water in many locations where oil leaks accumulate are cleaned. The sensor provides an online trend of oil layer thickness.
Many petroleum and power companies use it for monitoring and control of oil layers in typical applications such as:

Remediation Control

On-line monitoring of oil thickness changes over time in groundwater wells, enabling effective oil cleanup by using automated control of remediation.

Skim Tanks

In many processes, a skim tank is used for collecting wastewater containing oil. The ID-225 may be inserted into a tank through an inspection hatch, enabling automatic start and stop of oil skimming operation.

Monitoring Oil / Water Separators

Environmental regulations require oil/water separator’s effluent monitoring.
An ID-225 can monitor oil layer buildup in the separator without human intervention. When installed before the separator, it indicates when the oil separation capability of the separator is close to maximum and pumping of the thick oil layer should be done.

Wastewater Sewer Monitoring

An ID-225 installed in a sewer near the process area will detect and control big oil leaks at the source, reducing treatment plant load and immediately alarming on big spills.

Principle of Operation

Leakwise sensors use a high-frequency Electromagnetic Absorption technique. Each floating sensor houses high-frequency electromagnetic energy transmitting and receiving antennas that continuously monitor the liquid surface. Since water absorbs more electromagnetic energy than hydrocarbons, changes in the absorption rate of water indicate the presence or buildup of hydrocarbons.

Leakwise sensors are used for detection and monitoring the buildup of separated or emulsified non-soluble hydrocarbons on water and other aqueous solutions. In addition, the sensors differentiate between a wet and a dry sump. No other oil monitoring system does this.

ID-225 Description

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:

OPERATION

OPERATING RANGE

PHYSICAL SPECIFICATIONS

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