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FCI’s MT Series Multi-Point Mass Flow Meters are ideal for today’s most challenging industrial air or gas handling applications and continuous emissions monitoring systems (CEMS). 

Inside large combustion or preheater systems, HVac units, ducts or flue stacks, MT Series multi-point flow meters measure flow with exceptional precision under variable thermodynamic conditions.

They are an excellent choice for measuring mass flow almost anywhere variable conditions limit single-point flow meter effectiveness. 

Harsh environments, in which temperature, vibration, abrasion and corrosion pose difficulties for other meters, are no problem for the rugged MT Series multi-point flow meters. Instrument accuracy is available to ±2% of reading, with repeatability of ±0.5%.
Features
  • High accuracy – up to 16 flow sensing points per meter
  • Diagnoses duct temperature stratification with dynamic temperature output capability
  • Wide temperature range from -45° to 454° C (-50° to 850° F)
  • Pressures up to psig: 50 (kPa: 344, bar: 3.4)
  • Continuous built-in testing and calibration adjustment prevent drift for superior repeatability
  • Averaging filter dampens response to rapid process fluctuations
  • RS232C serial ports for communication with field devices
  • Choose 4-20 mA, 1-5 Vdc or 0-10 Vdc outputs
  • Menu-driven control for ease of service
  • Rack mountable with card slots for expansion and option modules
  • Stainless steel flow element construction; electronics enclosure rated NEMA/CSA Type 4
  • Simple maintenance with modular design and interchangeable components

Specifications

Accuracy

  • ± 0.5 % of Full Scale - Model MT86
  • ± 2 % of Reading
  • Flow at ± 17° C (± 30° F) Range: ± 2 % of Reading or ± 0.2 sfps (± 0.06 NMPS) - Model MT91
  • Flow at over ± 55° C (± 100° F) Range: ± 4 % of Reading or ± 0.5 sfps (± 0.15 NMPS) - Model MT91
  • Temperature Output Accuracy for 100° C (212° F) Range: ± 1° C (± 1.8° F) - Model MT91
  • Temperature Output Accuracy for 0° to 100° C (0° to 212° F) Range: ± 0.5° C (± 0.9° F) - Model MT91

Applications

  • Flue Gas Recirculation Monitoring
  • For Primary Air, Performance Efficiency, Low NOX Burners, Combustion Air: Flow Monitoring
  • Scrubber & Precipitator Balancing
  • Stack Monitoring for Continuous Emissions Monitoring Systems (CEMS)

Approvals & Certifications

  • AS 9100
  • ISO 9001

Cable Length

  • 10 to 100 feet (3 to 30 metres)

Cable Material

  • PVC Jacketed
  • Teflon Jacketed

Communication

  • HART - Model MT91
  • RS-232C - Model MT91

Conduit Connection

  • 1” NPT Female

Display

  • LCD Display: 4 Lines by 20 Characters/Line

Enclosure, Body Material

  • Local/Remote Enclosure: Aluminum
  • Local Enclosure: 300 Series Stainless Steel

Environmental Protection

  • CSA Typical 4
  • Explosion-proof, Groups B, C, D - Divisions 1 & 2
  • IP66
  • NEMA 4

Flange Material

  • 300 Stainless Steel (Duct Flange)
  • Carbon Steel

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - 150# ANSI
  • 1-1/2” (DN 40) - 300# ANSI

Flange Size - 2” (DN 50)

  • 2” (DN 50) - 150# ANSI
  • 2” (DN 50) - 300# ANSI

Flange Size - 3” (DN 80)

  • 3” (DN 80) - 150# ANSI
  • 3” (DN 80) - 300# ANSI

Flange Size - 4” (DN 100)

  • 4” (DN 100) - 150# ANSI
  • 4” (DN 100) - 300# ANSI

Flange Type

  • Raised Face (RF)

Flow Rate

  • 0.25 to 150 sfps (0.07 to 46 NMPS) at 21.1° C (70° F) & psi a: 14.7 (kPa: 101.3, bar: 1.013)

Input Power

  • 100 Vac, 50/60 Hz, 50 W, Max.
  • 115 Vac, 50/60 Hz, 50 W, Max.
  • 20-32 Vdc, 24 Vdc Nominal
  • 230 Vac, 50/60 Hz, 50 W, Max.
  • 24 Vdc, 1.5 A Fuse - Model MT86
  • 85-265 Vac, 47/63 Hz, 3.5 A Fuse - Model MT91

Materials of Construction

  • Flow Element: Chromium Carbide Plating
  • Flow Element: Electroless Nickel Plating
  • Flow Element: Hastelloy C

Media

  • Air
  • Gas

Mounting

  • 19” Rack in A ACcordance with DIN 41494 Part 1, ANSI/EIA-RS-310C - Model MT91

Mounting Position

  • Horizontal, Flow Right-to-Left or Left-to-Right
  • Vertical Down or Up

NACE & NIST

  • Calibration: Performed on NIST Traceable Equipment

Name Plate, Tag Material

  • Stainless Steel

NPT Connection

  • 1” NPT Male
  • 2” NPT Male
  • Retractable Packing Gland: 1-1/4” NPT Male

Operating Pressure

  • psig: 0 to 50 (kPa: 0 to 340, bar: 0 to 3.4)

Operating Temperature

  • -18° to 60° C (0° to 140° F) - Model MT91
  • -18° to 66° C (0° to 150° F) - Model MT86
  • Flow Element: -45° to 454° C (-50° to 850° F)

Operating Temperature - Display

  • 0° to 60° C (32° to 140° F) - Model MT91
  • -45° to 66° C (-50° to 150° F) - Model MT86

Output

  • Analog Output: 0-10 V (5,000 W Min.) Model MT91
  • Analog Output: 0-10 Vdc (2 mA - Max.
  • Analog Output: 0-5 V (2,500 W Min.) Model MT91
  • Analog Output: 0-5 Vdc, 2 mA - Max.
  • Analog Output: 10-50 mA (400 W, Max.
  • Analog Output: 1-5 Vdc (2 mA - Max.
  • Analog Output: 4-20 mA (1,000 W, Max.

Packing Material

  • Graphite

Pressure Range

  • psig: 0 to 500 (kPa: 0 to 3,400, bar: 0 to 34) - Design Pressure (Flow Element)

Process Temperature

  • -40° to 454° C (-40° to 850° F)

Relay Output

  • Dual DPDT Alarm: 2 A Contact Rating

Repeatability

  • ± 1 % of Reading - Transmitter (MT86/MT91)
  • Temperature Output Repeatability for 100° C (212° F) Range: ± 0.5 % of Reading - Model MT91
  • Temperature Output Repeatability for 0° to 100° C (0° to 212° F) Range: ± 0.2 % of Reading - Model MT91

Sensor, Probe Style

  • Insertion (M & S Sensor)

Sensor, Probe Type

  • 2 Platinum Resistance RTD

Turndown

  • 5: 1 to 100: 1, Max.

Wetted Materials

  • 316 Stainless Steel Nickel-Brazed Per Process Specification AMS 4777
  • Hastelloy C-276

  • Systems (CEMS)
  • Primary air flow monitoring
  • Air flow monitoring for performance efficiency
  • Air monitoring to low NOX burners
  • Combustion air flow monitoring
  • Flue gas recirculation monitoring
  • Scrubber and precipitator balancing
  • Induced or forced draft fan monitoring
  • Preheater air to boilers or furnaces
  • Heavy-duty industrial HVAC
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