the right permeability for flux-sensor´s

[schatzsucher]

Hi,

i want to build fluxgate-sensors - but, it´s very important to use the right permeability for the ferrit. Now, i don´t know what kind of permeability it´s important.

Here is the link to my ferrit-dealer

http://www.rotima.ch/ro_ferrite/hitachi/Ni_Zn/NiZn1.pdf

@Carl:
What kind of permeability i need for perfect sensity? High or Low permeability? A big ferrit, or a small ferrit - what kind of dimensions is better?

I hope to create a flux-sensor with sensity of 1pT - because, that´s exist!?

[ivconic]

Mumetal, metglas, permalloy....high permeabillity of course!
You need core which is easy to saturate. With less current to achieve fast core saturation.

Regards!

[ivconic]

Might be helpfull...

[Krzysztof]

flux-sensor´s - the core

I greet, Schatzsucher
Feryt this weak idea.
You will find in protections the Metglas the anty the thief of etiquette the type the DR the system the AM. You will find 2 belts about 4x40mm metglas inside! To be used maybe, for free!
On core give 1x30mm.
Important: the core in axis of coil.
I think, that tenderness line 1nT is real near careful realization;
on 1 pT this do not calculate - this is not the chamber of cesium only fluxgate.
Give to know about effects success.
73s, K.