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What constitutes Low, Medium or High Mineralization
Posted by: tbw
Date: June 15, 2017 06:10PM
On page 38 of the CTX 3030 handbook, there's a chart that makes reference to "Mineralization". Under the "Mineralization" column reference is made to "Low, Medium & High" mineralization. My question is what is the value and how to determine the specific value that makes up the "Low, Medium or High" value pertaining to mineralization. On page 92 of the handbook, reference is made a new display that allows one to monitor what's going on with Sensitivity. On the bottom of page 92 in a box indicated "Tip", by example "if the suggested sensitivity drops, it indicates the ground is mineralized or trash filled".

Back to how to determine the value in reference to "Low, Medium or High" Mineralization". When operating in manuel sensitivity mode, you can operate the CTX 3030 as low as1 or as high as 30. Would it be a logical assumption that "Low" mineralization would be as low as 1 up to and include 10, "Medium" mineralization would be 11 up to and include 20 and "High" mineralization would be 21 up to include 30?

Re: What constitutes Low, Medium or High Mineralization
Posted by: trojdor
Date: June 15, 2017 06:48PM
You're on the right track, but I think you've got your logic slightly backwards.

Low auto sens numbers imply HIGH mineralization...High auto sens numbers imply LOW mineralizaion.

mike

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Re: What constitutes Low, Medium or High Mineralization
Posted by: dewcon4414
Date: June 16, 2017 11:20AM
Those sensitivity digits represent whats going on around you and in the ground that is affecting how the machine is processing signals. But basically yes the higher the number the less the process is having to work which allows it to use more sensitivity. IE..... fluffy sand here in Fl has very little mineral...... the more you move toward the water,, hard pan, or concentrations of black sand the lower those number will get.

Dew



CTX, Blue Xcals
Whatever you do in life, surround yourself with smart people who'll argue with you.... John Wooden.
D. Meeker

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Re: What constitutes Low, Medium or High Mineralization
Posted by: dewcon4414
Date: June 16, 2017 11:56AM
Let me add. High sensitivity isnt always a better solution. Sometimes more targets. .. iron in the soil or even EMI you are better off with lower sensitivity. Anything affecting coil shut down will cause those digits to very. You might be surprised what others missed who ran crazy sensitivity levels.



CTX, Blue Xcals
Whatever you do in life, surround yourself with smart people who'll argue with you.... John Wooden.
D. Meeker



Edited 1 time(s). Last edit at 06/16/2017 12:03PM by dewcon4414.

Re: What constitutes Low, Medium or High Mineralization
Posted by: Atlas
Date: June 19, 2017 11:25AM
I mostly hunt in areas of high mineralization. Suggested sens levels in the single digits to mid teens. I typically run in manual and will set sens at a level of double the recommended level as a starting point an adjust from there.

So as an example if suggested sens is at 5 i will set sens to 10 to start.

HH

Re: What constitutes Low, Medium or High Mineralization
Posted by: metalpopper
Date: December 02, 2017 06:19AM
Excellent replies to-date......

TROJDOR concisely replies, with no ambiguities.

All other offering consolidate that......well done 'posters'........matt

Maybe other details could be discussed later; i.e. What constitutes the cause of higher AUTO-SENS. levels, but that's a 'bag of worms'
which the majority of E-Trac/CTX 3030 users may find difficult to get their head around.


My offerings:-
(A) You need to have a knowledge of soil-sciences and how electronically their properties are 'seen' by a metal-detector.
(B) Alternatively, Your experience with Et and CTX will enable you to logically run Manual or Auto, by previous experience of the related ground conditions.

Assume 15 Auto implies a 'normal' degree of ferrous mineralization.....i.e. a ground-effect-level that the Minelab can handle.(It does have its limits).

As the Auto-sens figures drop below 15, it's really warning you that detection range will decrease proportionally, due to 'ferro' being present; and any attempt to compensate with a higher Manual sens could invite unrequited inaccuracies or instability, due to EMI or erratic /undulating soil problems.

If the Auto-Sens begins to rise above 15, then FERRO mineralisation is relatively DECREASING. That indication suggests that you may exploit the local soil situation, with higher Manually sens levels; the value of which, will be dictated by EMI, or poor sweep-rate control,....matt

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