KONG Ling-tao1, HUANG Zhao-hong1, FAN Li-li2, et al. Design of flow switch based on InSb-In[J]. 2009, 28(9): 89-90+93. DOI: 10.13873/j.1000-97872009.09.005.
A flow switch made by InSb-In eutectic film magneto resistor is introduced.When liquid flows in a pipe
the drag force will impulse the magnetic element to rotate.InSb-In eutectic film magneto resistor will change correspondently.At the same time
the AC signal also can be obtained and sent to a microprocessor.The microprocessor will output high level and give an alarm when pulse frequency exceeds the limitations.The detection range can be set freely between 1.5L/min and 8.4L/min.