Instrumentation

Level Magnetic and Mechanical Float Level Sensors

Technology

Floats work on the simple principle of placing a buoyant object with a specific gravity intermediate between those of the process fluid and the headspace vapor into the tank, then attaching a mechanical device to read out its position. Early float systems used mechanical components such as cables, tapes, pulleys, and gears to communicate level, whereas today, magnet-equipped floats are popular. For both magnetic and mechanical float level sensors, chemical compatibility, temperature, specific gravity (density), buoyancy, and viscosity affect the selection of the stem and the float. Float sensors operate well in a wide variety of liquids, including corrosives. A special application of float type sensors is the determination of interface level in oil-water separation systems. All in all, magnetic float switches are popular for simplicity, dependability and low cost.



















Manufacturer

Endress + Hauser has a few different variations of float products, including, gauges and sensors, providing not only accurate and reliable level measurement, but also leak detection of petrochemicals, vegetable oils, etc. Website

RU Flex 2100 Digital Level Sensor

The patent-pending RU Flex 2100 DLS is a flexible, extremely rugged, chemically and abrasion resistant digital level sensor offering continuous, accurate, and reliable monitoring of tank level and temperature. With an 18" flexible radius, one person can install the sensor in 15 minutes.. Website

High Level Probe

Electrolab's' High Level Probe offers a single-point float switch for either high or low level detection in liquid tanks. Features include, but are not limited to - adjustable mounting grip providing ease of installation, capability to be built for custom lengths, and a float which activates and maintains the output until the level returns to normal. Website