universal magnetoresistive current sensor ppt

Monitoring pasture variability: optical OptRx(Â®) crop sensor versus Grassmaster II capacitance probe. By comparing measurement results from simultaneous measurement of the capacitive probe and contact probe of roundness instrument, this paper indicates the feasibility of using capacitive probes to test aspheric surface and proposes the compensation method of measurement error caused by averaging effect and the tilting of the capacitive probe.

Taking an eccentric spherical surface as the object of study, the averaging effect of capacitive probe measurement and the influence of tilting the capacitive probe on the measurement results are investigated.

We describe a novel method of non-contact measurement of aspheric surface with capacitive probe. With the application of aspheres in optical fields, high precision and high efficiency aspheric surface metrology becomes a hot research topic. The voltage sensor is a flat plate which operates as a capacitive plate to sense voltage on a center conductor of the transmission line, in which the measured voltage is obtained across a resistance leg of a R-C differentiator circuit formed by the characteristic impedance of a connecting transmission line and a capacitance of the plate, which is positioned proximal to the center conductor.Īspheric surface measurement using capacitive probes The current sensor is disposed in a transmission line to link all of the flux generated by the flowing current in order to obtain an accurate measurement. Capacitively coupled RF voltage probe having optimized flux linkageĪn RF sensor having a novel current sensing probe and a voltage sensing probe to measure voltage and current.

Universal magnetoresistive current sensor ppt