[Sneap] Corrosion in water cooling systems

[Ian J. Walker]

Hello All,
   With respect to the recent discussion on corrosion in water cooling 
systems:
   GMW offer a current transducer for measuring currents on high voltage 
cables, the Bergoz IPCT, which has a large 69mm aperture diameter and a 
resolution of about 10uA with 1 sec integration. I believe this could 
give a, non-invasive, measure of corrosion total current in a water 
circuit by placing the water line through the aperture. For a metal pipe 
there would have to be a non-conducting break in the line to avoid 
currents that may be flowing in the pipe. The output of the IPCT is 
+/-10V for a full-scale current of 10mA or 100mA.
   GMW is interested in having a Lab in North America evaluate the IPCT 
to measure corrosion currents and to determine whether monitoring of 
corrosion current is useful in maintaining cooling water quality and 
reducing corrosion. For a Lab that was interested in trying this and 
eventually preparing a Report for publication at SNEAP or a similar 
forum, GMW would be pleased to loan at no charge an appropriate IPCT for 
up to 12 months.
   For information on the IPCT Current Transducer see:
http://www.gmw.com/beam_diagnostics/Bergoz/ipct/ipct.html
   If you are interested please contact me by telephone or email. Thank you.
Best wishes,
Ian.

-- 
Ian J. Walker
VP Sales,
GMW Associates

Tel:         (650) 802-8292  Ext: 15
Fax:         (650) 802-8298
e-mail:      ian at gmw.com
Web:         http://www.gmw.com
Snail Mail:  955 Industrial Road
             San Carlos, CA 94070