FS211
Electronic Flow Switch
Principle Structure: There are two resistors in the enclosed probe based on the thermal principle. One of them is heated as the detection resistor and the other isnot heated. As the reference resistance, when the medium flows, the heat on the heating resistor is taken away. The resistance value is changed, the two resistance differences are used as the basis for judging the flow rate.
Features: No moving parts, maintenance-free, easy to install, one type can meet a variety of diameter requirements. Switching value is continuously adjustable, very low pressure loss, compact structure, LED display flow trends and switch status.
Application: Gas-liquid dual-use type, used for pneumatic and hydraulic systems, circulating water, cutting fluidand lubricating oil flow monitoring, and pump idling protection.
Parameters
| Setting Range | 1…150cm/s(Water), 3…300cm/s(Oil), 20…2000cm/s(Gas) | Initializtion time | About 8s |
| Signal output | PNP, NPN, Relay Type, NO+NC | Electrical protection | Reverse, short circuit, overload protection |
| Power Supply | 24V±20% DC or 230V±15% DC | Protection level | IP67 |
| Turn on current | Max 400mA (PNP, NPN); Max 4A (Relay Type) | Medium temperature | -20~80℃ |
| No-load current | Max 80mA | Ambient temperature | -20~80℃ |
| Flow indication | LED (6pcs) | Storage temperature | -20~100℃ |
| Setting Type | Potentiometer Setting | Connection mode | M12 Socket Connector/Attached 2 meters optional |
| Proof Pressure Range | 100bar | Material | Probe: stainless steel; Housing: PBT |
| Medium temperature change | ≤4℃/s | Weight | About 0.4kg |
| Response time | 1–13s, Typical value 2s |
Dimension
