From Fluid Components Intl. (FCI)

Thermal flow measuring technology has come a long way since the introduction of thermocouple technology and early hot wire anemometers. Thermal technologies depend on heat transfer and traditionally operate on differential temperature measurements between two temperature sensitive materials to generate a
signal directly proportional to the temperature differential and mass flow rate. Over the years, Thermal type flow sensors have
been utilized across a very wide spectrum of applications and feature an assortment of performance limits. Modern Thermal flow sensor designs have greatly evolved from laboratory
devices to rugged process instruments with each new generation representing a breakthrough in sensing performance. While Thermal sensing technologies have greatly evolved in terms of consistency and stability, there have been equally important breakthroughs in signal processing and firmware.

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Products & Services
Flow Switches
Flow switches are devices that monitor flow and send a trip signal to other devices, like a pump, for protection. These switches can be used for the measurement of gases, liquids, and steam.
Flow Meters
Flow meters (flowmeters) and flow sensors are devices used for measuring the flow rate or quantity of a moving fluid or gas.
Volumetric Gas Flow Switches
Volumetric gas flow switches are devices with a switch output used for measuring the flow or quantity of a moving gas in terms of a unit of volume per unit time, such as cubic feet per minute.
Gas Flow Meters
Gas flow meters are used for measuring the flow or quantity of a moving gas in an enclosed pipe or passage.
Liquid Flow Meters
Liquid flow meters are used to measure the volumetric flow rate or amount of a moving liquid.

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