[R-390] Series 4 Megger

[glwebb at gundluth.org]

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