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The high-performance liquid flow switch operates within a flow range of 1-30 L/min, with a stable activation flow of 1.2-2 L/min and a deactivation flow of 1-1.8 L/min. Its response time is a mere 0.2 seconds, enabling rapid and precise water flow detection. The flow switch features a G1/2'' standard connection and withstands water pressure up to 1.75MPa. For stable performance, install vertically following the arrow direction and maintain a minimum 2cm distance from magnetic sources to ensure consistent sensitivity.
A liquid flow switch is primarily used to detect “whether flow exists” or “whether flow reaches a set value.” It functions as a switch-type output device, activating its contacts when the flow reaches or falls below the set value to enable start/stop control or protective functions. In contrast, a flow sensor measures continuous flow values, typically outputting pulses or analog signals for metering and monitoring purposes.
Most liquid flow switches require specific installation orientations, particularly paddle-type or magnetic models. These typically must be mounted vertically or horizontally according to the directional arrow to ensure proper internal operation. Incorrect orientation may cause inaccurate start-up flow detection or switch failure. Before installation, verify the mounting method specified in the product manual and ensure no air bubbles or impurities in the pipeline affect detection accuracy. Additionally, keep the switch away from strong magnetic fields or vibration sources to prevent interference with normal operation.
Common malfunctions include normal water flow without device activation, pump false shutdowns, abnormal output signals, or delayed responses. Troubleshooting should begin by checking for pipeline blockages and verifying flow reaches the set threshold. Subsequently, use a multimeter to test contact conductivity. If insulation resistance drops or contact erosion is detected, replace the unit promptly. Regularly clean the filter screen, inspect wiring connections, and examine sealing structures to extend service life and minimize failures.