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March 2003

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Subject:
From:
Patrick Sullivan <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 3 Mar 2003 10:24:05 -0500
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Charlie, please feel free to contact Cookson Electronics' Specialty Coating
Systems division in Indianapolis, IN toll-free at 1-800-356-8260 for Tech
Support information on calibrating the Omegameter and Ionograph products.
SCS took over the operations of the ionic contamination units in 1998 from
Cookson's Alpha Metals group, and the Tech Support and Engineering staff
there would be happy to assist you with any questions.

Kind regards,

Patrick Sullivan
Equipment Product Manager
Cookson Electronics Equipment--Specialty Coating Systems
direct: +1 317 472-1248, mobile: +1 317-319-7021
e  [log in to unmask]
http://www.scscookson.com




                    peter.duncan@S
                    T.COM.SG             To:     [log in to unmask]
                    Sent by:             cc:
                    TechNet              Subject:     Re: [TN] Ionic Equivalence
                    <[log in to unmask]
                    rg>


                    02/27/03 10:34
                    PM
                    Please respond
                    to "TechNet
                    E-Mail
                    Forum.";
                    Please respond
                    to
                    peter.duncan






I'm not sure exactly how to calibrate the 600 model (is it R or SMD II?),
but try this: Multiply 6.45 by the total board area (both sides) to give
you the total permissible equivalent weight of NaCl. I suggest you convert
the board area to cm^2 first.

Get some standard test solution #3 (750 ppm which equates to 750ug/ml) and
dilute it with distilled water 10:1 if necessary for sensitivity. Add
sufficient volume of test solution (i.e. "weight of salt") to the
Omegameter to match your permissible weight limit and see what the
Omegameter reads. Calibrate as required to read 1:1, but if the Omegameter
assumes a certain board area to calculate its reading, make sure that you
take this into account.

If you have the SMD II model, it should be capable of measuring the
6.45ug/in^2 requirement - it equates to 1ug/cm^2.

Good luck

Peter



Charlie Pitarys <[log in to unmask]>     28/02/2003 12:16 AM
Sent by: TechNet <[log in to unmask]>

Please respond to "TechNet E-Mail Forum."; Please respond to Charlie
Pitarys

              To:  [log in to unmask]
              cc:  (bcc: DUNCAN Peter/Asst Prin Engr/ST Aero/ST Group)
              Subject: [TN] Ionic Equivalence








I need to meet a Bellcore requirement on an assembly of 6.45ugrams/sq.in.
(Based on the pwb surface area)

The assembly has 633.5 sq.in. surface area.

The customer has supplied me with documentation from;
Physical Design and Manufacture of Telecommunications Products PWB Assembly
Requirements,  GR-78-CORE, Issue 1, Sept 1997. Section 7.1.3.9

I have an Omegameter 600. Is there an equivalence factor, etc? Or is it a 1
to 1 deal?

Thanks in advance.

Charlie
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