Flux meter
Fluxmeters are measuring devices for determining the magnetic flux Φ.
Magnetic measurement methods can be divided into
- Induction methods,
- Strength methods and
- indirect methods.
Fluxmeters use induction methods and are based on the basic law of electromagnetic induction .
Working principle
The change over time in the magnetic flux Φ, which is encompassed by a measuring coil, induces a measuring voltage; the integral of this voltage over time gives the change in magnetic flux.
A change in flow is effected
- by introducing a magnetized sample into the measuring coil
- by removing a magnetized sample from the measuring coil
- by magnetizing a non-magnetized sample in the measuring coil
- by reversing the magnetization of a magnetized sample in the measuring coil
Procedure
Flux meters can be designed as
- electronic integrators
- ballistic galvanometer
- Creeping galvanometer (moving coil fluxmeter)
Related metrics
By measuring the magnetic flux Φ, the following related quantities can also be determined:
- Magnetic flux density B
- Magnetic field strength H
- Magnetic polarization J
- Magnetic moment m
- Magnetic permeability μ
literature
- Lothar Michalowsky u. Jürgen Schneider: "Magnet technology: Fundamentals, materials, applications", 3rd edition. Vulkan-Verlag, 2005, ISBN 9783802721397 , p. 76ff digitized