One kind of water level monitor recording instrument

The record way of most existing water level monitors is to use the float type, cannot satisfy the request of digitized output. Therefore studied one kind of water level monitor recording instrument composed by the microprocessor, drive circuit, stepper motor,the electric conduction metal measured line,the volume line drum,the water level supervised gauge head. Its characteristic one is actual measure water level rise,the drop and the invariable three conditions by two IC comparator and the microprocessor interrupt function; Two,uses a long screw rod installment to realize the axes stable motion on the volume line drum, arranges the electric conduction metal measure fine smoothly. It can supervy the water level change automatically([2]), record the value and time each water level change. This instrument may substitute for the present water level recording method. Has attained the Chinese patent, ZL:200420057999.5.