Thermal Flow Switch, 110VAC/ 220VAC, PNP/ NPN

SUCH thermal flow switch supports multiple interface types including G1/2, G1/4 external threads, and M18 internal threads. Sensor lengths are available in 15mm, 20mm, 30mm, 40mm, and 60mm to accommodate various pipe diameters and installation spaces. The flow switch utilizes a potentiometer for setting adjustment, with a controllable response time of 2–10 seconds. It supports multiple power inputs including 24VDC, 110VAC, and 220VAC. Output signals can be selected as PNP, NPN, or relay formats, ensuring strong compatibility. IP67 protection rating combined with reverse polarity, short circuit, and overload protection design ensures long-term safe operation.

Feature

• This thermal flow switch is designed for liquid media and can be used in various fluid environments, such as water and oil. Its measurement range covers 3–300 cm/s, meeting the needs of different flow rate conditions.
• The flow switch sensor probe is constructed from ANSI 316L stainless steel, offering excellent corrosion resistance and oxidation resistance. The housing is made of ABS engineering plastic, ensuring robust durability.
• Featuring an IP67 protection rating, it provides effective dust and water resistance, ensuring long-term stable operation in humid or dusty environments.
• The switch supports multiple mounting interface specifications, including G1/2, G1/4 external threads, and M18 internal threads, accommodating diverse piping system requirements.
• SUCH electronic flow switches incorporate reverse polarity protection, short-circuit protection, and overload protection, effectively preventing damage from incorrect wiring or sudden current surges.

Dimension (unit: mm)

Type Select

Detail

Wiring Diagram

Note

• When powered by 85~265VAC, both high and low point actions cannot be activated simultaneously. Please pay special attention to this specification during selection.
• When powered by 24VDC, connect brown to positive and blue to negative. The flow switch's internal transistor or relay output defaults to conducting or activating when above the set point. Conversely, connect blue to positive and brown to negative for the output to conduct or activate when below the set point.