Lefoo 2000 - 2025
Lefoo 2000 - 2025
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FS213
Electronic Flow Switch

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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 is not 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 fluid and lubricating oil flow monitoring, and pump idling protection.


Parameters
Dimension

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

Protection level

IP67

Turn on current

Max 400mA (PNP, NPN);

Max 1A@24V ac/dc (Relay Type)

Medium temperature

-20~80℃

No-load current

Max 80mA

Ambient temperature

-20~80℃

Flow indication

LED (6pcs)

Storage temperature

-20~80℃

Setting Type

Potentiometer Setting

Connection mode

M12 Socket Connector

Proof Pressure Range

100bar

Material

Probe: stainless steel;

Housing: stainless steel

Medium temperature change

≤4℃/s

Weight

About 0.4kg

Response time

1--13s, Typical value 2s




Dimension

Dimension
Dimension
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