Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Resistance in induction coil generated plasma

Status
Not open for further replies.

AdditiveTa

Materials
Joined
Jun 2, 2021
Messages
1
Location
US
Tried to continue thread where EdStainless referenced >25Mohm resistivity required in Cu coils with DI H2O.

Is it simply lesser of 2 evils; DI will corrode your Cu coils over time OR Hard tap water is TOO conductive and will produce mineral deposition in the presence of heat?
I'm at a loss; plasma system originally installed in 2017 and ran on tap water w/ DI polisher for several years to produce >25Mohm resistance.
Performance slipped so switched to straight DI @ ~17microsiemens. Little benefit to resistance (~1Mohm) ; process depends on high resistance (>4Mohm).
Have flushed with the thought that mineral deposition (Ca, etc) causing conductivity in system.

Anyone know what is going on?
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top