High resolution and low drift define a fluxmeter’s role in analytical measurement. The high resolution of the Model 480 is reinforced by a low noise floor. A configurable filter helps keep the readings quiet. Automatic and manual drift adjustment modes help optimize the integrators’ low drift characteristics. The IEEE-488 and serial computer interfaces included with the 480 allow automated data taking.
AC Magnetic Fields
Sensing coils are sensitive to AC magnetic fields but many conventional integrating fluxmeters can not measure AC fields. The Model 480 has an AC mode that enables it to measure fields over a wide frequency range using simple sensing coils. Applications are limited to field volumes as large or larger than the coil but for some, it is an inexpensive way to make low drift AC field measurements.
Adjusting or nulling the drift of an analog integrator wastes time. It can be the only unpleasant part of using an integrating fluxmeter. Lake Shore innovation brings some relief. The Model 480 has a built in drift algorithm that continually adjusts drift when the instrument and coil are idle. It is ready when you are to make precision low drift measurements. The adjustment algorithm has no effect during flux integration. Manual drift adjustment is also available.