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Custom Low Flow Rate Sensor for FC-40



This flow sensor is capable of detecting Fluorinert fluid flow and temperature. It has two buffered voltage outputs as well as a built-in calibration circuit. The output of the alarm set points are 6 amp relay contacts that can be used to control customer process applications. One buffered voltage output is available for flow and a second buffered voltage output is available for temperature monitoring. The flow sensor is a fixed position, single-point flow and temperature switch. The operation of the sensing element is based upon the thermal dispersion principle: A low-powered heater is used to produce a temperature differential between two Resistance Temperature Detectors (RTD's). The RTD temperature differential varies as a function of forced convection for flow measurement. The measurement of the fluid's temperature is obtained from the non-heated RTD.

This flow sensor is calibrated for use with Fluorinert (FC-40) which is a fluid with thermal stability, high dielectric strength and having a non-solvent characteristic. All designs are custom made to customer specifications.

Configuration Parameters:

  • Calibrated for use with Fluorinert (FC-40)
  • 3/4" NPT standard. 1" BSP, 1" mail NPT, 1/4" male NPT, flanged mounting, spool piece with 3/4" NPT tee or retactable sensing element available
  • Operating pressure 3500 psi
  • Operating Temperature: -40 to 850° F
  • Flow Range: fluid 0.01 to 5 fps
  • Buffered signal voltage output
  • Switch point accuracy: ± 2% max.
  • Monitoring accuracy: ± 5%
  • Temperature accuracy: ± 2 ° F
  • Repeatability: ± 0.5% of monitor reading
  • Alarm reponse time: 0.5 to 2.5 seconds
  • Alarm Relay Rating:
    • Dual SPDT or single DPDT
    • 6A resistive, 240 VAC, 115 VAC or 24 VDC
  • Input power: selectable
    • 115VAC, 100ma max., 50/60 Hz
    • 230VAC, 50ma max., 50/60 Hz
    • 24VAC, 485ma max., 50/60 Hz
    • 24 VDC, 230ma max.
  • Sensor Connectors per Customer Requirements
  • CE Marking Available
  • Enclosure: Hazardous Location Class I, II, Div. 1,2 Groups B,C,D,E,F and G. NEMA type 4x optionally available
 Flow Sensor 2

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Last update on October 14, 2013. Copyright (c) 2013 Power Development Solutions, LLC,