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HFM500 PNP/NPN/ Relay SPDT DPDT Thermal Flow Switch

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The HFM500 Thermal Flow Switch operates on the principle of thermal diffusion, utilizing the temperature difference between two sensors to measure flow rates. As the medium's flow rate increases, the temperature difference decreases, and vice versa. This variation is processed and converted into a standardized electrical signal output, which is then displayed for easy monitoring.



Features


    • All-Metal Shell Design: The durable all-metal construction ensures longevity and resilience, while the absence of moving parts guarantees a maintenance-free operation and straightforward installation.

    • Versatile Compatibility: One model accommodates various pipe diameters, featuring continuously adjustable switching values to meet diverse application needs.

    • Low Pressure Loss: Engineered for minimal pressure loss, this device enhances system efficiency and performance during operation.

    • Compact Structure: The space-saving design allows for easy integration into existing systems without compromising functionality.

    • 6-LED Display: Equipped with a six-LED display, users can easily monitor flow trends and switching statuses, providing clear visibility and enhancing operational control.


Technical Parameters

Measuring Range

Water: 1...150cm/s (Most sensitive range 1...60cm/s)

Oil: 3...300cm/s (Most sensitive range 3...100cm/s)

Air: 20...2000cm/s (Most sensitive range 20...700cm/s)

Measuring Medium

Water, Oil, Air

Withstand Pressure

100bar

Initialization Time

8s

Response Time

1...15s, related to thermal conductivity of medium, typical value 2s

Supply Voltage

24VDC

Output type

PNP/NPN/ Relay Optional

Operating Temperature

-20~80℃

Medium Temperature

-20~80℃

Probe Material

SUS304

Wiring Method

M12 Connector



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