Flow/temperature/level switch

The FLT93S flow/level/temperature switch from Fluid Components International performs monitoring, controlling and alarming of flow rates or levels of critical fluids such as foams, emulsion layers, liquids and slurries. Its rugged industrial design and housing are designed to provide high reliability and long service life under harsh plant environments in chemical refining, waste treatment and other industries.

The FLT93S switch is a dual-function insertion-style instrument that offers either flow/temperature sensing or level/temperature sensing in a single device. Dual 6 A relay outputs are standard and are assignable to flow, level or temperature.

The switch relies on the specific heat transfer properties of the media to identify the interface of different products. It monitors the interface of products with similar densities for highly reliable control in separation tanks and other vessels.

The FLT switch operates over a wide setpoint range in water from 0.003 to 0.9 mps. Level/interface accuracy is ±6.4 mm, and measurement repeatability is ±3.2 mm. The standard FLT93S withstands operating temperatures from -40 to 177 °C, and an optional configuration is available for temperatures from -73 to 454 °C. The FLT also features built-in temperature compensation.

A selection of standard and custom process connections can be provided with the FLT93S switch, and the control circuit can be integrally mounted with the sensing element or can be located in a remote location. The standard enclosure is made from a coated aluminium alloy and is suitable for use in ATEX locations and is rated for NEMA Type 4X (IP66) environments. Stainless steel or fibreglass enclosures also are available.