Curtis 3501 Manual -

The mechanical potentiometer design of the 3501 is robust but not invincible. In harsh environments (cement plants, food processing, marine applications), many engineers convert to a non-contact Hall-effect throttle. However, the manual warns: “Replacing a 3501 with a Hall device requires a different input scaling on the controller. Consult both manuals.”

The manual describes how to set the "Full" battery point. curtis 3501 manual

A few concepts in the manual deserve special attention because they shape how a machine feels and performs: The mechanical potentiometer design of the 3501 is