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Liquid Flow Switches and Air/Gas Flow
Switches for Industrial Process Measurement and Automation
FCI flow switches feature thermal dispersion
technology in which the temperature difference is greatest
in a no-flow condition and decreases as flow increases,
cooling the heated RTD. Changes in flow velocity directly
affect the extent to which heat dissipates and, in turn, the
magnitude of the temperature difference between the RTDs.
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An electronic control circuit converts the RTD temperature
difference into a DC voltage signal. Both of these signals are
provided at output terminals and are used to drive two adjustable-setpoint
alarm circuits. Both alarms are independently field configurable for
flow, liquid level/interface or temperature operation.
FCI has designed and developed four standard thermal flow switch
product series to meet a broad range of performance and
environmental application requirements. Each FCI flow switch group
can be distinctly identified by the following listed general
instrument characteristics:
FlexSwitch® Series: For
Process Temperature Changes up to ± 100° F [± 38° C] |
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Model |
Type |
Application |
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FLT93S Flow Switch |
Insertion |
Fast Response Flow and
Temperature Monitoring |
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FLT93F Flow Switch |
Insertion |
Ultra Fast Response Flow and
Temperature Monitoring |
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FLT93L Flow Switch |
Inline |
Low Flow and Temperature
Monitoring |
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FLT93C Flow Switch |
Insertion or Inline |
Sanitary Flow and Temperature
Monitoring |
NuTec® 2000 Series:
2-Wire Loop and Customary Power, Non-Intrusive, High Flow,
Sanitary and High Purity |
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Model |
Type |
Application |
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FS2000 Flow Switch |
Insertion |
Low Cost, 2-Wire Loop, or
Customary Power, Fast Response, Flow Monitoring |
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FS2000H Flow Switch |
Insertion |
High Velocity, 2-Wire or
Customary Power |
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FS2000L Flow Switch |
Inline |
Non-Intrusive; Sanitary,
High/Ultra High Purity Flow Monitoring |
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