FCI Thermal Mass Flow Meters

Overview

Fluid Components International (FCI) designs and manufactures thermal mass flow meters, flow switches, and level switches for industrial process measurement applications utilizing patented thermal dispersion flow measurement technologies.

FCI designs manufactures, and sells a broad line of thermal mass flow meters for air and gas flow measurement. Thermal mass flow meter technology utilizes the relationship between flow rate and cooling effect for direct measurement of mass flow.

With no moving parts and minimal invasiveness, thermal flow meters provide a highly repeatable, accurate, low-cost, easy-to-install solution for air and gas flow measurements.  FCI provides flow meters suitable for applications in pipes and ducts, as small as 1/4 inch [6mm] to the largest of stacks.

FCI thermal mass flow meters feature precision, surface-mount, and RoHS-compliant electronics with industry-leading functions and communications capabilities, and with unmatched agency approvals and certifications.  Whether standard analog outputs like 4-20mA or pulse or digital bus communications of HART, Foundation Fieldbus, PROFIBUS, Modbus, and more, FCI has a thermal flow meter solution.

Transmitter enclosures are the industry’s most rugged and tested and carry global agency approvals that ensure the longest service life and safe operation in the most demanding process and plant applications.   You will find FCI thermal flow meters with agency approvals from FM, FMC/CSA, ATEX, IECEx, EAC, NEPSI, Inmetro, and more, and the industry or country-specific pedigrees such as SIL (IEC 61508), CRN, PED, QAL 1, CEMS and more.

FCI provides several thermal mass flow meter product families and more than 20 models to meet a broad range of performance, pipe diameters, gas types, and environmental application requirements. Each FCI flow meter group can be distinctly identified by the following listed general instrument characteristics:

Thermal Mass Gas Flow Meters

ST Series Flow Meters Model

ST50 Air And Compressed Air Flow Meter

• The Model ST50 is a compact, low-cost solution for accurate, repeatable flow rate measurement of air, compressed air, or nitrogen. This insertion-style flow meter has no moving parts and is available in probe lengths for installation into pipe diameters from 2.5 inches to 24 inches [63 mm to 610 mm]. It is easily connected to the pipe via a 1/2-inch or 3/4-inch NPT compression fitting.
• The ST50 electronics are housed in a rugged, IP67-rated enclosure with dual conduit ports in either NPT or M20 threading. The instrument comes standard with dual 4-20 mA outputs – one for flow rate, and one for temperature. A 500 Hz pulse output (for external totalizer) can be added as an option. The transmitter/electronics can be integrally mounted with the flow element (probe), or be remotely mounted to best match your installation situation.

ST51/ST51A Gas Mass Flow Meters

• The Model ST51 and ST51A are a compact, low-cost solution for accurate, repeatable flow measurement of biogas, digester gas, landfill gas, methane, and natural gas as well as air, compressed air, or nitrogen. This insertion-style flow meter has no moving parts and is available in probe lengths for installation into pipe diameters from 2.5 inches to 24 inches [63 mm to 610 mm].
• It is easily connected to the pipe via a 1/2-inch or 3/4-inch NPT compression fitting. ST51 uses constant power thermal dispersion drive technology, with a slightly heated sensor, which uniquely provides a subtle drying effect on the sensors that results in effective measurement in moist gas applications.

ST75 Series Mass Flow Meters

• The ST75 Series thermal flow meters are a compact, low-cost solution for accurate, repeatable direct mass flow measurement of air and gases. These in-line (spool-piece) style flow meters have no moving parts and are available for use in pipe diameters from 1/4 inches to 2 inches, [6 mm to 51 mm]. Process connection options include male NPT, female NPT, and flanged. These thermal flow meters feature wide 100:1 turndown and depending on pipe size, will measure from 0.01 SCFM to 559 SCFM [0,01 NCMH to 950 NCMH].
• The ST75 Series electronics are housed in a rugged, IP67-rated enclosure with dual conduit ports in either NPT or M20 threading. The instrument comes standard with dual 4-20 mA outputs and a 500 Hz pulse output. The models ST75A and ST75AV include HART or Modbus, as well as NAMUR-compliant 4-20 mA outputs and SIL compliance rating. The flow meter’s transmitter/electronics can be integrally mounted with the flow element (probe) or be remotely mounted to best match your installation situation. The complete instrument carries global Ex agency approvals for Division l/Zone 1 installations.

ST80/ST80L Mass Flow Meters

• ST80 is a high-performance, rugged thermal dispersion technology air/gas flow meter that combines ultra-reliable, feature-rich electronics with the industry’s most extensive selection of application-matched flow sensors to provide a truly superior solution for industrial processes and plant applications. The ST80 further combines these features with a robust, rugged transmitter enclosure and the industry’s broadest selection of process connections to provide the longest service life and ease of installation in your installation’s pipe or duct.

ST98 Mass Flow Meter

• The ST98 insertion-style mass flow meter is the flow measurement solution for virtually any gas or gas mixture in line sizes from >2 inches up to 42 inches [50 mm to 1066 mm].¹ With ST98, FCI combines superior, equal mass thermal-dispersion flow sensing elements and precision electronics with exacting actual fluid calibration and a choice of rugged, industrial enclosures to deliver accurate, highly repeatable flow measurement and long-lasting service for the most demanding processes.

ST98B-AN Mass Flow Meter

• The ST98B-AN BASIC insertion type FlexMASSter sets a new standard for thermal mass flow meter performance, ease of use, and installed value for Air or Nitrogen service. This field-selectable insertion unit features an application-specific instrument package for fast ordering, simple installation, and precision measurement.

ST100A And ST100AL Mass Gas Flow Meters

• Inline and Insertion and  Any gases, line sizes ?2.5″ [63 mm]
• ST100 is an all-new, thermal dispersion technology gas flow meter that combines the most feature- and function-rich electronics with the industry’s most advanced flow sensors to achieve a truly state-of-the-science flow metering solution for industrial processes and plant applications.

ST102AA Mass Flow Meter

• Insertion, dual-element averaging system
• Any gases, line sizes ?12″ [305 mm], with dual elements

ST110A Mass Flow Meter

• Insertion, single-point with VeriCal™ capability
• Any gases, line sizes ?2.5″ [63 mm], with VeriCal

ST112AA Thermal Mass Flow Meter

• Insertion, dual-element averaging system with VeriCal™ capability
• Any gases, line sizes ?12″ [305 mm], with dual elements, with VeriCal

THERMAL FLOW METERS FOR AIR, COMPRESSED AIR, OR NATURAL GAS

• FS10i Natural Gas Flow Meter, Inline and Insertion Thermal Flow Meter
  • The FS10i is a compact, economical solution to natural gas flow metering. Utilizing application-proven thermal mass flow technology, the FS10i provides a highly accurate and repeatable linearized 4-20 mA output of flow rate.
  • It was the first thermal flow meter, and is currently the only one, to comply with SIL 2.  Additionally, for applications benefiting from a high or low flow alarm point, the FS10i includes a user-programmable 1A SPDT relay output.
• FS10i Air/Compressed Air Flow Meter, Inline and Insertion Thermal Flow Meter
  • The FS10i is a compact, economical solution to air and compressed air flow metering. It is the first, and currently only thermal mass flow meter to meet SIL 2.
  • Utilizing application-proven thermal mass flow technology, the FS10i provides a highly accurate and repeatable linearized 4-20 mA output of flow rate. Additionally, for applications benefiting from a high or low flow alarm point, the FS10i includes a user-programmable 1A SPDT relay output.

MT100 Series Multipoint Thermal Mass Flow Meters

• The MT100 Series is an insertion-type, multipoint thermal flow meter specifically designed for large diameter pipes, such as stacks and flues, and large rectangular ducts, such as air feed intakes and HVAC. Ordinary flow meters find these large pipe/duct applications difficult because of distorted flow profiles and a lack of straight runs, which can lead to inaccurate and non-repeatable flow measurements.
• FCI’s MT100 places up to eight (8) flow sensing points in the flow stream and averages them, resulting in a highly accurate and repeatable flow rate measurement. Unlike other large pipe flow meters, the MT100 has no moving parts or orifices to foul or clog. The insertion design in the same plane makes it an easy and lower-cost solution to install.

For more information please click Fluid Components International (FCI) 

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