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Industry Product

FCI ST50 Thermal Mass Flow Meter Series

By: FCI - Fluid Components International
12 July, 2011
ST50 Series Flow Meters are an easily installed, no moving parts measurement solution for compressed air and nitrogen (ST50) and biogas, digester gas, methane and natural gas (ST51). They utilize FCI’s proven thermal dispersion technology, providing direct mass flow measurement for higher performance at a lower cost than traditional technologies.

Mass Flow Meter Summary:

The ST50 Series Flow Meters are an accurate, easy to install, no moving parts mass flow meter solution. Model ST50 is used for compressed air and nitrogen flow. Model ST51 is used for measuring biogas, digester gas, methane and natural gas. The ST50 Series utilizes FCI proven thermal dispersion technology to provide direct mass flow measurement resulting in higher performance at a lower cost than orifice plates, DP, Vortex shedding and other thermal devices. The meter installs in line sizes ranging from 2 to 24 inches [51 to 610mm] with 1/2" or 3/4" NPT.

The ST50 Series uses precision, lithography structured platinum RTD sensors embedded in FCI's equal mass small diameter, all metal thermowells. Combined with microprocessor electronics and precision calibration, the ST50 achieves excellent accuracy, fast response and virtually maintenance free operation.

Model ST50 Applications:

  • Wastewater Treatment Aeration Control

  • Blower and Dryer Air Flow Control

  • Burner and Furnace Air Flow Control

  • Lake, Pond and Aquaculture Aeration

  • HVAC Duct/Damper Control

  • Compressed Air Distribution Measurements

Model ST51 Applications:

  • Landfill Gas Recovery (LMG)

  • Wastewater Treatment Plant Digester

  • Coal Mine Methane Recovery

  • Livestock and Dairy Farm On-Farm Biogas Recovery

  • Biogas: Biomass Fermentation and Recovery

  • Biomass Gasification

Specifications:

 

Model ST50

Model ST51

Media Compatibilty

Air, Compressed Air, Nitrogen

Biogas, Digester Gas, Methane, Methane Composition Gases, Natural Gas, Air, Compressed Air, Nitrogen
Agency Approvals

FM/CSA:

Class 1, Div.2,

Groups A,B,C,D;

T4

Class 1, Div.1, Groups B,C,D,

Class 1, Div.2, Groups A,B,C,D;

T4

ATEX:

Zone 2

II 3 G EEx nA IIT6

II 3 D T65C

Zone 1

II 2 G Ex d IIC T6...T3,

II 2 D Ex tD A21 IP67

T90°...T300°
Output Signals

Dual 4-20 mA Analog:

0-500 Hz pulse for totalizer:

Yes

Optional

Yes

Yes

Digital Display

(optional)

LCD, ±9999 counts, user scaleable to flow rate engineering units or 0-100%

LCD, 2 line x 16 Characters. First line is flow rate and engineering units. Second line user selectable as temperature or flow totalizer, or alternating.

Pipe/Line Size Compatibility:

2" to 24" [51 mm to 610 mm]

Flow Rate:

  • ST50: 0.75 to 400 sfps [0.23 to 122 mps]

  • ST51: 0.3 to 400 sfps [0.08 to 122 mps]

Accuracy: (at calibrated conditions)

  • Standard: ± 2% reading, ± 0.5% full scale 

  • Optional:  ± 1% reading, ± 0.5% full scale

Temperature Coefficient: (at calibrated conditions)  With optional extended temperature compensation. Valid from 10% to 100% of full-scale calibration Flow: Maximum ± 0.025% of reading/ºF up to 250ºF [±0.05% of reading/ºC up to 121 ºC]
Repeatability: ± 0.5% reading
Temperature Compensation: 

  • Standard: 40° to 100° F [4° to 38° C];

  • Optional: 0° to 250° F [-18° to 121° C]

Turndown Ratio: 10:1 to 100:1  
Flow Element:
Installation: Insertion Type: Thermal Dispersion Material of Construction: 316 stainless steel body with Hastelloy C thermowell sensors, 316 stainless steel compression fitting with teflon or stainless steel ferrule. Pressure (Maximum Operating without Damage): 

·Stainless steel ferrule: 500 psig [34 bar(g)]

·Teflon ferrule: 150 psig [10 bar(g)]

Operating Temperature: 

  • Stainless steel ferrule: 0° to 250° F [-18° to 121° C]

  • Teflon ferrule: 0° to 200° F [-18° to 93° C]

Process Connection: 1/2" MNPT or 3/4" MNPT with stainless steel or Teflon ferrule. Insertion Length (Field Adjustable) 1:

  • 1 to 6 inches [25 to 152 mm]

  • 1 to 12 inches [25 to 305 mm]

  • 1 to 18 inches [25 to 457 mm]

Flow Transmitter:
Enclosure: NEMA4X (IP67) aluminum, Epoxy coated Operating Temperature: 0° to 140° F [-18° to 60° C]
Input Power:

  • DC:18 to 36 Vdc

  • AC:85 to 265 Vac (CE Mark Approval from 100 to 240 Vac).

Communication Port: RS-232C, Wireless IR to PDA with optional digital display models Installation: Integral or Remote (50'[15m] max.) 
Photo of FCI - Fluid Components International

FCI - Fluid Components International
Fluid Components International (FCI) designs and manufactures mass flow meters, flow switches and level switches for industrial process measurement applications utilizing patented thermal dispersion flow measurement technologies. FCI products deliver accuracy and reliability to the world's most demanding processes and industries including chemical, oil and gas, power and energy, water and wastewater, pharmaceutical, pulp and paper, nuclear power, aerospace, and many more. YouTube

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Fluid Components International (FCI) designs and manufactures mass flow meters, flow switches and level switches for industrial process measurement applications utilizing patented thermal dispersion flow measurement technologies. FCI products deliver accuracy and reliability to the world's most demanding processes and industries including chemical, oil and gas, power and energy, water and wastewater, pharmaceutical, pulp and paper, nuclear power, aerospace, and many more. YouTube
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