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A manufacturer of gasoline dispensers required an extremely
accurate and reliable flow sensor to track the dispensing
of fuel into vehicles, and the corresponding cost. The sensor
needed to be immune to the corrosive atmosphere inside a fuel dispenser.
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Cherry developed a custom magnetic flow sensor using Hall Effect
technology and packaged it in a custom aluminum housing for
maximum fire retardance. Cherry then designed a magnetic target with 6
discreet magnets molded into a ring to provide the required accuracy and hysteresis.
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For this custom solution, Cherry
employed the following capabilities:
• Rapid prototyping and magnetic
modeling to quickly design and
evaluate the optimal magnetic circuit
• Electronic circuit design and in-
house printed circuit board
manufacturing
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