Flow monitoring in installations – reliable Danfoss FQS-U30G flow sensor

This vane flow sensor, type FQS-U30G, is a robust solution for precise monitoring of liquid flow in various installations. Designed to work with media compatible with copper alloys, as well as water and glycol, it will be suitable for heating, cooling and industrial installations. Its versatility results from the possibility of adaptation to pipes with a diameter from 1 to 6 inches – just select the appropriate vane length.

Construction and principle of operation

The sensor uses a principle of operation based on the movement of a vane, which is moved by the flowing liquid. A built-in SPDT contact system (single-pole double-throw switch) reacts to the change in the vane position, signaling the start or end of flow. The sealing of the vane mechanism protects the electrical components from contact with the medium, ensuring safe and reliable operation. Thanks to this, it can be used in various environmental conditions.

Applications and benefits

The FQS-U30G sensor is used in:

• cooling and air conditioning systems (chillers, condensers),
• domestic hot water installations,
• fire protection installations,
• industrial processes requiring liquid flow control.

Why choose this sensor?

• Versatility: one model fits pipes with a diameter from 1 to 6 inches – saving time and costs associated with selecting the right equipment.
• Simple installation: easy installation in horizontal or vertical position simplifies the system startup process.
• High reliability: solid construction and protection ensure long-lasting and trouble-free operation.
• PZH certificate: confirms safety of use in contact with drinking water (important for sanitary installations).
• CE and UL certificates: guarantee compliance with European and American safety standards.
• Durability: The maximum working pressure is 9.8 bar, which ensures safe operation even in demanding conditions.
• Wide temperature range: The sensor operates correctly in a temperature range from 5°C to 80°C for both medium and environment.

This sensor is an ideal choice for both professional installers looking for a reliable component for their projects, and for end-users who want to be sure of the correct operation of the flow monitoring system in their building or plant. A 1 inch R threaded connection facilitates integration with existing pipeline infrastructure.