FES Electronic Flow Switch Thermal Conductivity Water Flow Switch NPN / PNP

Specifications

FES economical electronic flow switch
Real-time monitoring of liquid flow in the pipeline, providing switching output, and using 6 LED real-time display of fluid flow status, can achieve the following monitoring functions: medium flow, reduce/improve the flow rate; Medium present/absent; Medium flow/static; Monitor the flow velocity in the pipeline and monitor or prevent pump idling. It is widely used in petrochemical, electric power, gold, steel mill, paper making, food processing, water treatment, battery factory and other industries.

FES economical electronic flow switch features:
1, economical and affordable, suitable for use in a large number of equipment, reduce the cost.
2, instead of baffle flow switch, sensitive action, long service life.
3, can effectively prevent entanglement.
4, fully waterproof shell design.
5, the applicable pipe diameter range is large, arbitrary adjustment set point
6, the indicator light directly shows the flow change.
Conventional flow switch or flow indicator signal, mostly baffle or piston, relying on liquid flow power to push the baffle or piston action, water resistance is large, flow loss is large, poor accuracy, can not monitor small flow. the sealing part is sealed with metal bellows, which is resistant to pressure difference and easy to produce metal fatigue burst.

Working principle:

FES economical electronic flow switch is designed based on heat exchange principle. Probe the built-in heating module and thermal module, flow switch heat conduction velocity is closely related with medium, measure, by heat in heating module, if there is no medium flow pipe, the thermal module receives the heat is a fixed value, when there are medium flow, thermal module acceptable to heat will changes over medium velocity, The sensible heat module converts the temperature difference signal into electrical signal, and then converts it into the corresponding standard analog signal or contact signal output through the processor. The flow switch displays and controls the flow rate of the medium through this signal



Technical parameters:
Measuring range: water: 0.03 ~3m/s;
Oil: 0.0 3 ~3m/s;
Gas: 2 ~20 m/s
Pressure resistance: 1.6m P A
Connection mode: thread G 1/2 ", G 1/4 ", other
Switching time: O N: typical ≥4 s (1 ~1 3s);
O F F: typical ≥4 s (1 ~1 5s)
Temperature change reaction time:≤ 12 s
Working voltage: D C 24 V
Power consumption: 2 W
Output: relay, N P N/P N P output
Contact capacity: 2 A / 220 VAC, 3 A / 30VDC
Insulation impedance: 100V D C, 100 M ω
Control connection points: 1 pair
Contact capacity: 2A / 220 VAC, 3A / 30VDC
Insulation impedance: 100VD C, 100 M ω
Probe material: 304 stainless steel
Shell material: PP
Working temperature: -10 ℃ -60 ℃
Environmental conditions: -20 ~ 85 ℃,≤ 85 % R H
Protection level: I P 6 7