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Ferrite Ring 8 Years Later


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34 minutes ago, cudamark said:

What's the expression......Two countries separated by a common language? 😄

One will never understand how important that can be till they're a mid 20's Canadian gal who moved to the Gold Coast of Aus in the mid 90's for an IT job and made the mistake of asking her boss "Where can I find a router?" but being from Canada, pronounced it "rooter".... after the entire office caught their breath from the laughing, I was brought up to speed.... 

image.png.bc150b7ea6515b2a3520967a6a0aa6a1.png

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JP gave me grief over my pronunciation of aluminum, but it actually is spelled differently in Australia, and they pronounce the extra vowel - aluminium 

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15 minutes ago, Steve Herschbach said:

JP gave me grief over my pronunciation of aluminum, but it actually is spelled differently in Australia, and they pronounce the extra vowel - aluminium 

Good thing you weren't wearing Adidas (pronounced Addy Das).... 🙂

 

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On 8/8/2022 at 7:40 AM, Rob Allison said:

** Something Important to Customers - The ferrite rings are super fragile, many have just tossed them down on the ground and shattered them.  It's best if you place them gently on the ground, "don't toss" them or there is a high change of it breaking into pieces.  Some have covered them in various material to protect them, even electrical tape. 

I just wrapped mine in small bubble wrap…a couple of wraps. I toss it on the ground even when there are rocks. It's never given a hint of breaking. Try it, you might be surprised.

And yes, I use a ring...

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Will, someone please fill this bimbo in on WTH X is?

🤔

 

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https://en.m.wikipedia.org/wiki/Viscous_remanent_magnetization

Bit of light reading for you Jen. In the case of the 7000 as described in my post above X can become an issue due to slight variations in ZVT, with slight differences in temperature, electronic differences or coil differences making it hard to calibrate at factory. PIs are not overly affected due to pulse not a constant Tx like ZVT but can still have issues in saturable places. Where VRM is extreme the G balance can compensate for some of it but not all. I’m no expert BTW and only have a basic understanding.  

https://www.minelab.com/__files/f/254716/KBA 24-1 Basics of the GPZ 7000 Technology Zero Voltage Transmission (ZVT).pdf

This article is more focussed and relevant to ML detectors especially the comments about ground balancing and reactive soil component. 

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9 minutes ago, Jonathan Porter said:

https://en.m.wikipedia.org/wiki/Viscous_remanent_magnetization

Bit of light reading for you Jen. In the case of the 7000 as described in my post above X can become an issue due to slight variations in ZVT, with slight differences in temperature, electronic differences or coil differences making it hard to calibrate at factory. PIs are not overly affected due to pulse not a constant Tx like ZVT but can still have issues in saturable places. Where VRM is extreme the G balance can compensate for some of it but not all. I’m no expert BTW and only have a basic understanding.  

https://www.minelab.com/__files/f/254716/KBA 24-1 Basics of the GPZ 7000 Technology Zero Voltage Transmission (ZVT).pdf

This article is more focussed and relevant to ML detectors especially the comments about ground balancing and reactive soil component. 

Thanks JP... I was starting to think you were all scoring E's and headed to a rave... LOL

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On 8/12/2022 at 10:48 AM, Jennifer said:

One will never understand how important that can be till they're a mid 20's Canadian gal who moved to the Gold Coast of Aus in the mid 90's for an IT job and made the mistake of asking her boss "Where can I find a router?" but being from Canada, pronounced it "rooter".... after the entire office caught their breath from the laughing, I was brought up to speed.... 

image.png.bc150b7ea6515b2a3520967a6a0aa6a1.png

Yes, confusion abounds when you start talking American to an Aussie or Kiwi. Order biscuits and gravy in a restaurant and see what looks you get! Getting pissed has a whole different meeting, not to mention the word fanny! 😆

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On 8/10/2022 at 8:12 AM, Northeast said:

Obviously this is all related to the 7000.  Does X signal affect a GPX of any model?  Is there any auto calibration happening in a GPX 6000?  
 

Can the GPX 6000 balance both 'G' and 'X' the same as GPZ 7000 does?

The GPX 6000 does not track the Ferrite component of the ground. GeoSense-PI uses other techniques to remove the 'X' response that is invisible to the operator.
You do not need a yellow ferrite to ground balance the GPX 6000.

From the Minelab website.

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