VICI D-2-IM User Manual
Page 6
2
The PDHID response is universal except for neon, which has an ionization potential
of 21.56 eV. Since this potential is close to the energy of the He* metastable
(19.8 eV) but greater than the photon energy from the He
2
continuum, neon
exhibits a low ionization efficiency and low detector response. (NOTE: Valco
makes an enhanced mode detector for neon. Consult the factory for information.)
Safety Notes and Information
Symbols
HIGH VOLTAGE
Voltages presenting the risk of electric shock are present in several
places in the equipment. Avoid contact with hazardous live parts.
Do not probe into openings or attempt to defeat safety mechanisms.
HOT SURFACE
The surface of the detector body may be hot while in operation
(possibly in excess of 250°C). Caution should be observed.
ATTENTION
Refer to the manual.
PROTECTIVE EARTH
This internal connection provides protection against electric shock
from mains voltages and should not be removed.
Installation Category
This equipment has been designed for installation category (overvoltage category)
II, pollution degree 2. It has been approved for use only in heavy industrial environ-
ments and may not be used in the residential, commercial, or light-industrial
environment.
Introduction