1.Working principle: magnetic sensor/reed proximity sensor. 2.The flow sensor adopts stainless steel beads inlaid inside the impeller, which is durable and wear-resistant and has stable performance. The special sealing ring is not easy to leak. 3.Precautions for use 1. Severe impact and chemical erosion are strictly prohibited. 2. Throwing or collision is strictly prohibited. Schematic diagram of installation direction 3. Install horizontally, with the label facing up, and the inclination should not exceed 5 degrees. 4. The temperature of the medium should not exceed 120℃.