NOHKEN INC.
NOHKEN INC OL Miniature Float Sensor

Manufacturer: NOHKEN INC
Model: OL
Main application
Small mass produced equipment
Main feature
Compact, low-cost design with multiple standard variations for most liquid applications.
Stable performance under pressure, temperature, and specific gravity changes.
OL ensures reliable measurement, unaffected by capacitance or conductivity.
High reliability and safety using only reed switches that meet strict in-house standards.
Flexible installation with a wide range of components and fast delivery.
Class NK certified (07A008)
OL measures fuel, lubricant oil, and other liquids (excluding decks, bridges, and cargo tanks; except side-mounted OLH).
Principle of Operation
he sensor uses a magnet and a reed switch to detect liquid presence. The reed switch has its contacts encased in a glass tube with inert gas, and operates by an applied magnetic field.
The figure shows the float and the stem. The float integrates a magnet, and the stem a reed switch at the set point. The reed switch opens or closes as the float goes up or down on the stem.