One of the reed switch liquid level automatic control circuits (fill-in type)

It adopts reed switch control and can be used for level control of non-conductive liquids . It
controls the action of the reed switch through the magnetic ring or magnetic head according to the rise and fall of the liquid level, and then controls the starting and stopping of the pump. Figure 11-10 is a flooded liquid level
automatic control circuit. If it is a withdrawable liquid level control , just put the reed switch KR at the upper limit and KR at the lower limit
, and the control circuit remains unchanged. The same below.
    In the figure, R and C are spark suppression circuits to protect the reed switch contacts. Reed switch KRi uses JAG4-H (normally open type),
<R2 uses JAG4-2 (conversion type).