FGM-3 vs. FLC-100

[schatzsucher]

What´s the better sensor for building a µC-Gradiometer?

For FLC-100

Quelle: http://www.stefan-mayer.com/home.htm

For FGM-3

Quelle: http://www.speakesensors.com

[Grey]

I suppose it comes down to your application, if your looking for big lumps iron then I would go for the FGM3 as it has a simple output and costs less than £20 whereas the FLC-100 comes in at about £60.

I'm currently looking at two projects, now that the nights are closing in.
(1) A PI detector with a 1 meter coil (uC controlled hammerhead)
(2) A magnetometer / gradiometer with an ~1nT resolution. I'm hoping to narrow down search areas for cache hunting. See the following link for an idea of the results I am aiming for.

http://dspace.dial.pipex.com/town/terrace/ld36/grad.htm

The two sensors that I'm looking at are the FGM-3h and the FLC-100-70 which come in at approximately £24 and £60 respectively. The FLC-100 should give you a little more resolution if you can keep the noise down on the analogue output. The FGM-3h requires a little more hardware to stop it saturating. In this application I will probably go the FGM-3h way, unless Stefan Mayer Instruments want to send me a couple of free sensors.

As soon as I get started, I will post regular details here, so long as there is interest.

[Leto]

Lots of interest here Grey...keep on posting.

Very much interested how you plan to stop FGM-3h saturating??

Also interested in practical gradiometer circuits with FLC 100 and wondering if two gradiometer sensors of this type needs to be synchronized (excitation frequencies)?

[Unregistered]

Hi schatzsucher

do you hav e any relationship with OKM FUTURE GPR s.
their main page is seen under your name.

[Unregistered]

hi

HI!

Veja o link
http://www.monstein.de/Electronics/F...e/fluxgate.htm

[Crowbar]

So long I've been absent on this site . This summer I bought FLC3-70 for purposes: Geomagnetic DC and ULF measurements, and with this aims sensor deals perfectly. But for treasurehunting I'll prefer FGM-3h, howhever it can easily be adapted for gradiometer-microprocessor project.

P.S: sorry for my English

[seven]

Hi Friends Who sensor schematic flc 100

[Orbit]

[daluka]

[seven]

[ATTACH]25505[/ATTACH]

Hi Friend Who sensor schematic flc 100

[seven]

Hi everyone, I mean the way flc100 sensor schematic teachers who were

[galaksi]

Help me?

[ATTACH]25505[/ATTACH]

Can you shared al files? lay and up, down pcb pictures?

[daverave]

can these be used inside a pulse detector coil shell to get iron discrimination ??? how much they cost and do they ship to the UK ????

[daverave]

can these be used inside a pulse detector coil shell to get iron discrimination ??? how much they cost and do they ship to the UK ????

ANYONE KNOW PLEASE ????

[Orbit]

If I could ! https://www.youtube.com/watch?v=7hFo9YRqY3c