Patent ID: 8813757

Claim:
A valve reading and adjustment tool for use with a valve having a pressure or flow setting adjustable to a plurality of pressure or flow settings, comprising: a signal generator, comprising: an adjustment circuit configured to generate an adjustment signal, wherein the valve, in response to the adjustment signal, adjusts a pressure or flow setting of the valve; a reading circuit configured to generate a reading signal, wherein the valve, in response to the reading signal, provides a response indicative of the pressure or flow setting of the valve; at least one excitation coil connected to the signal generator and configured to generate an oscillating electromagnetic field based on at least one of the adjustment signal and the reading signal received from the signal generator; and a sense coil, comprising: a first sense coil portion positioned on a first side of the at least one excitation coil; and a second sense coil portion positioned on an opposite side of the at least one excitation coil than the first second coil portion.