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LK-FCT Thermal Conductivity Flow Switch |
Product Features：
●Fully waterproof housing design, effectively preventing entanglements.
●Suitable for a wide range of pipe diameters, with arbitrarily adjustable setpoints.
●The indicator light directly displays flow changes, enabling real-time monitoring and management of liquid flow conditions.
●6 LEDs display the fluid status in real-time and can achieve the following monitoring functions:
Medium flow velocity decreasing/increasing/ Medium present/absent/ Medium flowing/static
●Suitable for monitoring the flow velocity and flow interruption of fluids in pipelines, and preventing the idling of pumps.
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Main Application Fields:
Petrochemical, electric power, metallurgy, steel mills, papermaking, food processing, water treatment, battery factories and other industries.
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| Working Principle |
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| The LK - FCT thermal conductivity flow switch is designed based on the principle of heat exchange. The probe has a built-in heating module and a heat - sensitive module. The heat conduction of the flow switch is closely related to the flow velocity of the medium. During measurement, heat is emitted by the heating module. If there is no medium flowing in the pipeline, the heat received by the heat - sensitive module is a fixed value; when there is medium flowing, the heat received by the heat - sensitive module will change with the change of the flow velocity of the medium. The heat - sensitive module converts this temperature difference signal into an electrical signal, and then the processor converts it into a corresponding standard analog quantity signal or contact signal for output. The flow switch displays and controls the flow velocity of the medium through this signal. |
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| Main Technical Parameters |
| Measurement Range |
Water: 0.03 - 3 m/s; Oil: 0.03 - 3 m/s; Gas: 2 - 20 m/s |
| Pressure Resistance |
4 MPa (special type: 60 MPa) |
| Connection Method |
Thread G1/2", G1/4", and others |
| Switching Time |
ON: Typical ≥ 4s (1 - 13s); OFF: Typical ≥ 4s (1 - 15s) |
| Temperature Change Response Time |
≤ 12s |
| Working Voltage |
DC24V, AC/DC220V |
| Power Consumption |
2W (24VDC), 3W (220VAC/DC) |
| Output |
Relay, NPN/PNP output |
| Contact Capacity |
0.4A/125VAC, 2A/30VDC |
| Insulation Resistance |
50 MΩ at 100VDC |
| Probe Material |
304 stainless steel |
| Shell Material |
PP |
| Working Temperature |
-10°C - 60°C |
| Environmental Conditions |
-20 - 85°C, ≤ 85% RH |
| Protection Class |
IP67 |
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