[R-390] Series 4 Megger

[Joe Foley]

Yup, the local film producer, the big yellow box, used the same type of thing to check the conductivity of shoes in every building that had silver solutions in it.  Didn't want any stray static sparks to affect the light sensitivity of the silver stuff.

Joe



--- On Wed, 8/5/09, glwebb at gundluth.org <glwebb at gundluth.org> wrote:

> From: glwebb at gundluth.org <glwebb at gundluth.org>
> Subject: Re: [R-390] Series 4 Megger
> To: r-390 at mailman.qth.net
> Date: Wednesday, August 5, 2009, 8:47 AM
> I haven't used my Biddle Mark III
> Floor and Footwear Tester for 30 + years.
> We used to check the conductivity of the floors in the
> hospital operating
> rooms.
> Cyclopropane was still used as an anesthesia gas.  You
> might guess it could
> be an exlplosive hazzard with electrosurgical units (RF
> generators used as
> an electronic scalpel) making lots of sparks.  Floors
> had to have their
> conductivity
> measured between two foil covered weighted electrodes 3
> feet apart.
> Acceptable
> readings:  Lower limit 25,000 ohms, upper limit
> 1,000,000 ohms.
> Just for the nostalgia I cranked the handle this
> morning.  After all I do
> own an R-390A.
> 
> Gary L Webb NI9V, CBET III, Clinical Engineering
> Specialist
> 
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