Fluid Components International (FCI)
Thermal dispersion mass flow meters, flow and level switches and VORTAB flow conditioners, with no moving parts.
Fluid Components International (FCI) is the specialist in thermal dispersion flow and level measurement. FCI flow meters measure the mass flow of air and gases directly, without separate temperature or pressure compensation, and have no moving parts to wear or clog. The same principle gives FCI flow and level switches dependable no-flow, low-flow and level alarms. Ronsor Engineering is the authorised and sole distributor of FCI in Singapore and the Philippines.
What Ronsor supplies
- Thermal mass flow meters: the compact ST50, ST51 and ST75 for air, compressed air, nitrogen and biogas; the ST80 and ST100A for process gases; the MT100 multipoint meter for stacks and large ducts; and the FS10i for compressed air.
- Flow switches and level switches: the heavy-duty FLT93 and the FS10, which can also act as temperature switches, and the FS10A for analyser sample lines.
- VORTAB flow conditioners: VIP, VIS, VEL and VMR conditioners that shorten the straight pipe run needed before a flow meter.
Where FCI instruments are used
Typical duties are flare gas, biogas and digester gas, compressed air, combustion air and pump protection. Our application pages show FCI models at each measuring point on flare systems, biogas digesters, fired heaters and furnaces, steam and power boilers, aeration basins and pumps and compressors.
Built to order
Each FCI meter and switch is built and calibrated to order for your gas composition, flow range, line size, process connection and hazardous-area approvals. We work through the application details with you and with FCI, so the instrument arrives configured for your installation.
FCI is part of DwyerOmega.
Browse by application
Combustion, Furnaces & Boilers
Gas Processing & Chemicals
Process Vessels & Skids
Pumps, Tanks & Storage
Water & Effluent Treatment
Cleanrooms & HVAC
Cooling & Heating Water
Power, Safety & Control
All Fluid Components International (FCI) models by product type
Air Velocity & Airflow Measurement
Flow Conditioners

VEL Flow Conditioner
FCI VORTAB VEL elbow flow conditioner that replaces a 90° elbow and cuts the straight run needed before a flow meter to 3 pipe...

VIP Flow Conditioner
The patented* VIP (Vortab Insertion Panel) flow conditioner completely neutralizes

VIS Flow Conditioner
The VORTAB® VIS Insertion Sleeve flow conditioner provides a low pressure loss solution to flow profile irregularities caused by...

VMR Flow Conditioner
The VORTAB® VMR Meter Run flow conditioner provides a low pressure loss solution to flow profile irregularities caused by elbows,...
Flow Meters

ST80 Flow Meter
FCI ST80 thermal mass flow meter for industrial air and gas, with a wide choice of sensors (including wet gas) and process...

FS10i Flow Meter
FCI FS10i compact thermal mass flow meter for air and compressed air, with a 4-20 mA output, a programmable alarm relay and a SIL...

MT100 Flow Meter
FCI MT100 multipoint insertion thermal flow meter with up to eight sensing points, for air and gas flow in stacks, flues and large...

ST100A Flow Meter
FCI ST100A thermal mass flow meter for process gases, with 4-20 mA, pulse, HART, FOUNDATION Fieldbus, PROFIBUS or Modbus outputs.

ST50 Flow Meter
FCI ST50 insertion thermal mass flow meter for air, compressed air and nitrogen in 2.5 to 24 in pipes, with 4-20 mA flow and...

ST51 Flow Meter
FCI ST51/ST51A insertion thermal mass flow meter for biogas, digester and landfill gas, methane, natural gas and air, in 2.5 to 24...

ST75 Flow Meter
FCI ST75 in-line thermal mass flow meter for air and gases in 1/4 to 2 in lines, with 100:1 turndown and no moving parts.
Flow Switches

FCI FS10A Analyzer Flow Switch + Monitor
Low‑Flow Switch & Monitor for Analyzer Lines; ±2 % Setpoint

FLT93 Thermal Dispersion Switch
FCI FLT93 heavy-duty thermal dispersion flow and level switch with no moving parts, for liquids, gases and interfaces in process...

FS10 Thermal Dispersion Switch
FCI FS10 thermal dispersion flow switch with 316L and Hastelloy C-22 wetted parts and no cavities or dead legs, for analyser...
Level Switches

FLT93 Thermal Dispersion Switch
FCI FLT93 heavy-duty thermal dispersion flow and level switch with no moving parts, for liquids, gases and interfaces in process...

FS10 Thermal Dispersion Switch
FCI FS10 thermal dispersion flow switch with 316L and Hastelloy C-22 wetted parts and no cavities or dead legs, for analyser...
Temperature Switches

FLT93 Thermal Dispersion Switch
FCI FLT93 heavy-duty thermal dispersion flow and level switch with no moving parts, for liquids, gases and interfaces in process...

FS10 Thermal Dispersion Switch
FCI FS10 thermal dispersion flow switch with 316L and Hastelloy C-22 wetted parts and no cavities or dead legs, for analyser...
