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Mats:
(Is that a common name in Sweden or is it a "nickname"? I am
1/8 Swedish, rest is Finlander.)
I THINK (not know) that you are making the same mistake I made
when I got on this forum. My mistake was reading only the
archives that had titles that SEEMed appropriate. Many of the
titles are completely inappropriate in relation to the content
of the posting.
I will give you a partial answer to you question and you will
probably get a lot more feedback from others which will
complete the answer particularly after you look at ALL of the
past archival entries. Once you do that ask all the questions
you want because there is really a great bunch of guys on this
forum who, in the aggegate, know EVERYTHING there is to know
about this subject.
Other than basic electronic information and soldering/assembly
skills my IMPRESSION is that anyone can build any of the units
that I show below, although once built, it might require more
tuning, more learning, more experimentation before you finally
have it right. DO locate and buy the book from M. L. Dalton
in Dallas, TX. There is much information there although some
of it is dated and Mr. Dalton's second career, by my
perception, is that of a political commentator which he
sometimes mixes in with the technical literature. I have
spoken to him a few times and have gone over his literature
and he is a VERY intelligent man and a TRUE pioneer in this
field.
For all of these we are looking at under $US300.00 plus of
course shipping, customs duties, etc. in your case. Couple
probably far under this.
FATQUARTERS software sells a kit which I believe has two
fluxgate sensors. I believe this design is from Carl Moreland
originally.
Phil Barnes has an EXCELLENT CDROM for US$ 29.95 plust
(presumable) air post to sweden. This includes a design for a
unit with solenoidal sensors.
Jim Koehler has an excellent, although not fully Beta tested
yet. In actual fact he is close to a finished document but I
BELIEVE he will make a few more changes before it is
finalized. I believe for your proposed use this might be the
unit you should select, although it may take a bit longer to
get finished. He now has some initial data for larger liquid
filled toroidal coils which should be IDEAL for your purposes.
Unfortunately, these coils will result in a staff (sometimes
called "beam") which will weight 10 Kilos or more, which is
too heavy for portable field use, which is what I am
interested in. Jim has, most graciously, published, on the
web, his full plans for the unit. You MUST download this. He
also has a spreadsheet so you can calculate things about
either solenoidal or toroidal coils. If you have spreadsheet
knowledge (preferably Excell) You MUST download this also.
Other than Jim's, huge manuscript, the parts, some electronic
assembly skills, you MUST learn how to make the liquid filled
toroidal sensors. Assuming you take my suggestions, but wait
until you see everybody else's ideas first - the larger
sensors will be what you will use. I will be glad to fill you
in on details on these. BUT, after making a firm decision to
go that way, the first thing you will have to do is to GET the
toroidal forms. In Ireland they use them as floats on
commercial fishing nets. They are toroids (donuts), about
198 mm (8 inches) outside diameter and about 4 7/8 inches on
the ID and the diameter that forms the toroid "donut" is 1.65
inches. (If nothing else you will now get a little bit of
practice converting inches to meters. - If you do convert them
ACCURATELY, give me the numbers please.) They are made of a
hard plastic. So far we know of green and gray - but of
course, the color makes no difference.
If, (after reading the forum, Phil's CD, Jim's document and
maybe the Dalton literature) you decide that you would like to
do a proton magnetomer with LARGE toroidal sensors, you have
to find out if those are available in Sweden. If they are,
plese let me know, and let me know the price, AND the minimum
quantitity that you can order. If you cannot find them there
I will get some for you BUT the problem is that my only source
I have to make a relatively big order and pay postage from
Ireland and then of course postage to Sweden. Don't make much
sense if you can get them there. Still even at that, if they
cost you 10 or 20 bucks (buck = US dollar) it is not a big
deal in relation to the total cost and importance of the
project.
Also, you have a very important expert from sweden on this
forum and I assume he will eventually get in touch with you.
You have both given me inferiority complexes as your written
English is as good if not better than mine.
Best regards,
Dale
--- Original Message -----
From: "Mats Blickström"
To: "The Proton Mag Forum"
Sent: Saturday, March 18, 2000 10:57 AM
Subject: Help!
> The Proton Mag Forum
>
> Hi,
> I'm a scuba divers for Sweden. We do a lot of diving i the
Baltic see
> and its full of wrecks.
> The problem is to find them. Now i wonder if somebody have
blueprint and
> schematics of a Uv-mag.
> I lack the knowledge to design one my self.
>
> Regards Mats
>
>
>
__________________________________________________ ____________
________
(Is that a common name in Sweden or is it a "nickname"? I am
1/8 Swedish, rest is Finlander.)
I THINK (not know) that you are making the same mistake I made
when I got on this forum. My mistake was reading only the
archives that had titles that SEEMed appropriate. Many of the
titles are completely inappropriate in relation to the content
of the posting.
I will give you a partial answer to you question and you will
probably get a lot more feedback from others which will
complete the answer particularly after you look at ALL of the
past archival entries. Once you do that ask all the questions
you want because there is really a great bunch of guys on this
forum who, in the aggegate, know EVERYTHING there is to know
about this subject.
Other than basic electronic information and soldering/assembly
skills my IMPRESSION is that anyone can build any of the units
that I show below, although once built, it might require more
tuning, more learning, more experimentation before you finally
have it right. DO locate and buy the book from M. L. Dalton
in Dallas, TX. There is much information there although some
of it is dated and Mr. Dalton's second career, by my
perception, is that of a political commentator which he
sometimes mixes in with the technical literature. I have
spoken to him a few times and have gone over his literature
and he is a VERY intelligent man and a TRUE pioneer in this
field.
For all of these we are looking at under $US300.00 plus of
course shipping, customs duties, etc. in your case. Couple
probably far under this.
FATQUARTERS software sells a kit which I believe has two
fluxgate sensors. I believe this design is from Carl Moreland
originally.
Phil Barnes has an EXCELLENT CDROM for US$ 29.95 plust
(presumable) air post to sweden. This includes a design for a
unit with solenoidal sensors.
Jim Koehler has an excellent, although not fully Beta tested
yet. In actual fact he is close to a finished document but I
BELIEVE he will make a few more changes before it is
finalized. I believe for your proposed use this might be the
unit you should select, although it may take a bit longer to
get finished. He now has some initial data for larger liquid
filled toroidal coils which should be IDEAL for your purposes.
Unfortunately, these coils will result in a staff (sometimes
called "beam") which will weight 10 Kilos or more, which is
too heavy for portable field use, which is what I am
interested in. Jim has, most graciously, published, on the
web, his full plans for the unit. You MUST download this. He
also has a spreadsheet so you can calculate things about
either solenoidal or toroidal coils. If you have spreadsheet
knowledge (preferably Excell) You MUST download this also.
Other than Jim's, huge manuscript, the parts, some electronic
assembly skills, you MUST learn how to make the liquid filled
toroidal sensors. Assuming you take my suggestions, but wait
until you see everybody else's ideas first - the larger
sensors will be what you will use. I will be glad to fill you
in on details on these. BUT, after making a firm decision to
go that way, the first thing you will have to do is to GET the
toroidal forms. In Ireland they use them as floats on
commercial fishing nets. They are toroids (donuts), about
198 mm (8 inches) outside diameter and about 4 7/8 inches on
the ID and the diameter that forms the toroid "donut" is 1.65
inches. (If nothing else you will now get a little bit of
practice converting inches to meters. - If you do convert them
ACCURATELY, give me the numbers please.) They are made of a
hard plastic. So far we know of green and gray - but of
course, the color makes no difference.
If, (after reading the forum, Phil's CD, Jim's document and
maybe the Dalton literature) you decide that you would like to
do a proton magnetomer with LARGE toroidal sensors, you have
to find out if those are available in Sweden. If they are,
plese let me know, and let me know the price, AND the minimum
quantitity that you can order. If you cannot find them there
I will get some for you BUT the problem is that my only source
I have to make a relatively big order and pay postage from
Ireland and then of course postage to Sweden. Don't make much
sense if you can get them there. Still even at that, if they
cost you 10 or 20 bucks (buck = US dollar) it is not a big
deal in relation to the total cost and importance of the
project.
Also, you have a very important expert from sweden on this
forum and I assume he will eventually get in touch with you.
You have both given me inferiority complexes as your written
English is as good if not better than mine.
Best regards,
Dale
--- Original Message -----
From: "Mats Blickström"
To: "The Proton Mag Forum"
Sent: Saturday, March 18, 2000 10:57 AM
Subject: Help!
> The Proton Mag Forum
>
> Hi,
> I'm a scuba divers for Sweden. We do a lot of diving i the
Baltic see
> and its full of wrecks.
> The problem is to find them. Now i wonder if somebody have
blueprint and
> schematics of a Uv-mag.
> I lack the knowledge to design one my self.
>
> Regards Mats
>
>
>
__________________________________________________ ____________
________