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Product Groups
Multifunction Flow Computers
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
FC-21 and FC-22
  • Custody Transfer with Audit Trail
  • Liquid, Gas, Steam, and Heat Flow Equations
  • Menu Selectable Hardware Inputs/Outputs
  • Isolated Pulse and Analog Outputs Standard
  • RS-232 Port Standard
  • Windows Setup Software
 Manuals (contact with email : [email protected])


The new Model FC-21 multifunction batcher and the Model FC-22 flow computer satisfy instrument requirements for a variety of flow meter applications. trodeks offers many different types of flowmeters: paddlewheels, turbines, positivie displacement, annemometers, mass flow, etc. for many application solutions.
The Model FC-21 flow computer is suitable for liquid batching, volumetric batching, and corrected volume applications. The Model FC-22 was designed for liquid, gas, steam, and heat applications. Multiple flow equations are stored in both models. These versatile flow computers are user programmable from the front panel. The user assigns hardware inputs and outputs to suit the particular application during setup. Isolated analog output can be chosen to follow the volume flow, corrected volume flow, mass flow, temperature, pressure or density by means of menu selection. The standard RS-232 serial port for datalogging, transaction printing, or for connection to a modem for remote meter reading can also be assigned by this method.

Operating Temperature:
0 to 50°C (32 to 122°F)
Storage Temperature: -40 to 85°C (-40 to 185°F)
Relative Humidity: 0 to 95%, non-condensing
Display Type: Alphanumeric, 2 lines, 7.6 mm (0.3") characters, backlit LCD or VFD (specify at time of order)
Mounting: Panel, wall mount
Power Supply:
    FC-21: 110, 220 Vac standard; 12 or 24 Vdc optional
    FC-22: 85 to 275 Vac standard; 24 Vdc optional
Signal Inputs

    High-Level Pulse: Low = 0 to 1 Vdc; high = 3 to 30 Vdc
    Low-Level Pulse: 10 mV or 100 mV (magnetic pickup)
Frequency: Up to 20 kHz
0 to 10 Vdc, 0 to 5 Vdc, 1 to 5 Vdc (FC-21 only)
Current: 4 to 20 mA, 0 to 20 mA Temperature Input
    FC-21: Temperature, density
    FC-22: 2 temperature, pressure, density
Excitation Voltage:
    FC-21: Programmable—5 Vdc, 12 Vdc or 24 Vdc @ 100 mA,
    FC-22: Fixed @ 24 Vdc
Relays: Menu assignable for each relay; 2 SPDT relays rated 5 A, 240 Vac or 30 Vdc; Contact Flow Engineering for additional information
Isolated Output: Menu assignable
Analog: 4 to 20 mA; 1000 Ω max load
Pulse: Open collector; 24 Vdc (FC-22 only)
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