Re: Electrostatic Meters - AC not possible

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Original poster: "Nicholas Field by way of Terry Fritz <twftesla-at-qwest-dot-net>" <nick.field-at-hvfx.co.uk>

Hi Dan,

I have an Ernest Turner electrostatic voltmeter here which reads 20kVAC just
fine. I believe there are several types of electrostatic meters, maybe one
of the Bert's can enlighten us.

Safe Coiling,
Nick
_______________
Nick Field, HVFX
www.hvfx.co.uk

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, November 12, 2002 2:20 PM
Subject: Electrostatic Meters - AC not possible


 > Original poster: "Mccauley, Daniel H by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>
 >
 >
 >
 > To prove that AC measurements using a electrostatic meter is NOT possible,
I
 > went into our lab today and tried measuring 4000VAC (60Hz) using both an
EIS
 > electrostatic meter and a Sensitive Research type electrostatic meter.
 >
 > For each test, the negative terminal of the electrostatic meter was
grounded
 > and connected to the return for the 4000VAC
 > source.  A true RMS multimeter with a high voltage probe was used to
verify
 > any readings.
 >
 > In each instance, the multimeter read the nominal 4000VAC rms, but the
each
 > electrostatic meter read ZERO volts.
 >
 > To verify the electrostatic meters were working i switched the source to
 > output 4000VDC and voila, the electrostatic meters both read 4000V on the
 > nuggin' !
 >
 > Dan
 >