FSD-4

The electronic flow switch uses the thermal dispersion principle to monitor fluid flow. Its core consists of a temperature sensor and a heating element, and it calculates the flow rate by measuring the rate at which the fluid carries away heat. During operation, the heating element maintains a constant temperature difference. As flow increases, heat dissipation accelerates, and the circuit automatically compensates the heating power and converts the signal into a flow percentage displayed on the LCD screen.

The FSD-4 electronic flow switch can flexibly monitor and control the flow of liquid media based on the flow velocity. The switch point of the FSD-4 is freely configurable, easily achieved either directly via the instrument's 3-button operation or through IO-Link. The FSD-4 can output absolute and relative flow values in various units and display them on the digital indicator. It is suitable for controlling cooling and lubrication systems, monitoring coolant circuits, controlling filter units, and providing dry-run protection for pumps.