VOLKE Explosion Proof Flow Switches Water Flow Sensor

FGS-EX explosion-proof flow switch is a safety and explosion-proof thermal conductivity flow switch. It is widely used in petrochemical industry, electric power, gold treatment, steel plant, papermaking, food processing, water treatment, battery plant and other industries.

Working principle of FGS-EX flow switch:

FGS-EX thermal conductivity flow switch is designed based on the principle of heat exchange.

The probe has built-in heating module and heat sensing module.The heat conduction of the flow switch is closely related to the flow rate of the medium,During measurement,the heat is generated by the heating module according to the working principle of the thermal conductivity flow switch.If there is no medium flow in the pipeline,the heat received by the heat sensing module is a fixed value;When a medium flows,the heat received by the heat sensing module will change with the flow rate of the medium.The heat sensing module converts the temperature difference signal into an 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.

Its characteristics:The anti scaling coating of the probe can effectively prevent the adhesion of scale,rust and other dirt in the pipeline,and has stronger anti fouling ability.The full waterproof shell design is applicable to a wide range of pipe diameters.The set point can be adjusted arbitrarily.The high-pressure type can withstand pressure up to 60MPa.The indicator light directly displays the flow change.Effectively prevent entanglement.


FGS-EX explosion proof flow switch features:

1. Intrinsically safe explosion-proof type.

2. Effectively prevent entanglement.

3. It is applicable to a wide range of pipe diameters, and the set point can be adjusted arbitrarily.

4. High pressure type, can withstand 40MPa.5. The indicator light directly shows the flow change.

Technical parameter:
Flow parameters
Measuring range	water: 0.03 ~1.5 m/s Oil: 0.03 ~3 m/s
Withstand voltage	4MPa (special 40MPa)
Connection mode	thread G1 / 2 ", G1 / 4", others
Switching time	ON: ≥ 5 s (1 ~ 1 3 s); OFF :≥5 s(1 ~1 5 s
Temperature change reaction time	≤ 12s
Working voltage	DC24V, AC / DC220V
Power consumption	2W
Output	relay, NPN / PNP output
Contact capacity	0.4A/125VAC,2A/30VDC
Insulation impedance	50MΩ at 100VDC
Probe material	304 stainless steel
Shell material	aluminum alloy
Operating temperature	- 10ºC - 60ºC
Environmental conditions	- 20 ~ 85 ºC, ≤ 85% RH
Explosion proof grade	Exd II B T4Gb
Protection grade	IP66