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.
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
| |
Model |
Type |
Application |
| |
FS2000 Flow Switch |
Insertion |
Low Cost, 2-Wire Loop, or Customary Power, Fast Response, Flow Monitoring |
| |
FS2000H Flow Switch |
Insertion |
High Velocity, 2-Wire or Customary Power |
| |
FS2000L Flow Switch |
Inline |
Non-Intrusive; Sanitary, High/Ultra High Purity Flow Monitoring |
|
.jpg){kind=tracking}
