LEAKWISE ID-223ET: Advanced Ethanol Concentration Sensor

Applications:

The LEAKWISE ID-223ET sensor represents a breakthrough in ethanol leak detection and concentration monitoring. As the world’s first continuous field instrument for ethanol in water technology.

The ID-223ET sensor is designed for continuous detection and measurement of ethanol in water or of Gasoline-Ethanol mixtures, specifically targeting sites where ethanol leaks or spills can occur.

This advanced sensor provides real-time monitoring of ethanol concentration, making it invaluable for the ethanol industry in leak detection and environmental protection. Key applications include:

1. Ethanol Storage Tanks: The sensor enables continuous monitoring around above-ground ethanol or gasoline-ethanol mixture storage tanks, providing early detection of leaks or spills.
2. Oil/Water Separators and Treatment Plants: In facilities handling ethanol, the ID-223ET can monitor ethanol concentrations in separators and treatment plants, ensuring effective separation and regulatory compliance and alert plant operators of any upsets in the treatment process.
3. Stormwater Run-Off Monitoring: Installed in stormwater systems at ethanol manufacturing or loading areas, the sensor detects ethanol contamination in run-off water.
4. Wastewater Sewer Systems: In ethanol manufacturing or loading areas, the ID-223ET monitors wastewater for ethanol content, helping to detect leaks at the source and prevent environmental contamination.

ID-223/ET Description:

The ID-223ET sensor is part of a LEAKWISE system, consisting of a controller and one or more sensors. This sensor features a high-frequency transmitter mounted on a float built in a guiding cage, designed to maintain precise positioning at the liquid/air interface despite fluctuations in liquid level.

Key features of the ID-223ET include:

1. Detection Range: Capable of detecting and monitoring ethanol concentrations from 10% to 100% (by volume) in water
2. Multiple Sub-models: Available in three variants to accommodate different water level fluctuations and containment size:
   • ID-223ET/500: up to 500 mm (19.7 in) water level variation
   • ID-223ET/2000: up to 2,000 mm (6.6 ft) standard, or up to 5,000 mm (16.4 ft) on request
   • ID-223ET/2500: up to 2,500 mm (8.2 ft) standard, or up to 5,500 mm (18 ft) on request
3. Dual Alarm System: Operates with the analog PS-220 Controller, offering two field-adjustable alarm points:
   • Low alarm: Triggers at a first predefined low ethanol concentration
   • High alarm: Activates at a second predefined high ethanol concentration, or detects a dry sump situation
4. A 4-20 mA analog output indicating continuous ethanol concentration
5. Continuous Diagnostics: Built-in system monitors sensor operation for reliable performance
6. Compatibility: Can be integrated with the SLC-220 digital controller for managing up to four sensors
7. Accessory: A stilling tube is recommended for installations where lateral water velocity exceeds 30 cm/sec (11.8 in/sec) or where water is turbulent

The ID-223ET offers repeatable, continuous monitoring of ethanol concentration, making it an essential tool for environmental protection and regulatory compliance in various industrial applications related to ethanol production, storage, and handling. The ID-223ET is also capable of detecting ethanol in empty sumps before water fills them.

Additional Capabilities:

The ID-223ET sensor can also detect other miscible hydrocarbons in water, such as methanol, making it a versatile solution for various industrial applications.

Principle of Operation

LEAKWISE ID-220 series sensors employ advanced high-frequency Electromagnetic Absorption technique. Each floating sensor contains high-frequency electromagnetic energy transmitting and receiving antennas that provide continuous monitoring of the liquid top surface. This technology exploits the principle that water absorbs more electromagnetic energy than hydrocarbons. Consequently, changes in the water’s absorption rate at the top layer indicate the presence or accumulation of miscible hydrocarbons.

LEAKWISE sensors are engineered to detect and monitor the buildup of both separated and emulsified non-soluble hydrocarbons on water and other aqueous solutions, and the ID-223ET monitors also miscible hydrocarbons. A unique feature of these sensors is their ability to differentiate between wet and dry sump conditions, a capability unmatched by other hydrocarbon monitoring systems, allowing the indication of water level below the minimum required.