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FCI designs, manufactures and sells a broad line of air, gas and liquid mass flow meters utilizing both thermal dispersion and Coriolis flow measurement technologies.
Thermal dispersion technology utilizes the relationship between flow rate and cooling effect for direct measurement of mass flow. With no moving parts and minimal invasiveness, thermal dispersion is ideal and widely applied in air and gas applications, and provides a highly repeatable and accurate measurement. For use in both liquids and gases and in application in the CM Series.
FCI transmitters and electronics feature advanced microprocessor-based circuitry and rugged construction. These include features such as simple configuration of the signal outputs, display or alarm setting in the field, or analog and digital outputs, easy servicing and maintenance, and long-life in even the harshest of plant installations.
FCI has designed and developed four standard mass flow meter product families to meet a broad range of performance and environmental application requirements. Each FCI flow meter group can be distinctly identified by the following listed general instrument characteristics

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Model |
Type |
Application |
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ST50 Mass Flow Meter |
Insertion |
Air, Compressed Air, Nitrogen |
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ST51 Mass Flow Meter |
Insertion |
Biogas, Digester Gas, Methane,
Methane Composition Gases, Natural Gas, Air, Compressed Air, Nitrogen |
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ST75/ST75V Mass Flow Meter |
Inline |
1/4" to 2" [ 6 to 51mm] line, all gases |
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ST98B-AN Mass Flow Meter |
Insertion |
Air or Nitrogen Thermal Mass Flow Measurement |
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ST98B-CA Mass Flow Meter |
Insertion |
Compressed Air Thermal Mass Flow Measurement |
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ST98 Mass Flow Meter |
Insertion |
All Welded 316L Stainless Steel, Microprocessor Based |
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ST98L Mass Flow Meter |
Inline |
All Welded 316L Stainless Steel, Microprocessor Based |
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ST98HP/UP Mass Flow Meter |
Inline |
High Purity Gas Flow Measurement |
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