Re: Fwd: X-Ray Survey Equipment/X-ray spectra

[tdc@ehssun.lbl.gov]

>1. Though no international definition of kVp yet exists, there is a
>single device currently used by virtually all non-invasive kVp meter
>manufacturers, x-ray machine manufacturers and calibration
>facilities world-wide as their calibration standard. This device is
>the DYNALYZER (or the HV-1 divider) and is viewed by many in the
>industry as a working standard.

I believe the DYNALYZER _IS_ an invasive device which connects across the
secondary of the high tension transformer.

Keitheley makes a non-invasive kVp divider that corresponds VERY WELL with
the invasive DYNALYZER and is relatively independant of mA, distance and
filtration.  It DOES require special attention when working with high
frequency and pulsed fluoro/cine.