Intended use, Function, Trademarks – Nor-Cal CDG 025 OP Lit User Manual
Page 4: Patents

4
CDG025-OP-LIT (2010-1)
If not indicated otherwise in the legends, the illustrations in this
document correspond to Capacitance Diaphragm Gauges with
the DN 16 ISO-KF vacuum connection. They apply to other
vacuum connections by analogy.
We reserve the right to make technical changes without prior
notice.
All dimensions in mm.
Intended Use
The Capacitance Diaphragm Gauges are intended for absolute
pressure measurement of gases in their respective pressure
ranges (
→ 3).
The gauges can be operated in connection with a Nor-Cal
Vacuum Gauge Controller or another appropriate controller.
Function
The Capacitance Diaphragm Gauge consists of a capacitive
sensor element made of aluminum oxide ceramics and electro-
nics which convert the capacitance into a DC voltage output sig-
nal.
The output signal is linear to the measured pressure and inde-
pendent of the gas type.
Trademarks
VCR
®
Swagelok Marketing Co.
Patents
EP 1070239, 1040333
US Patents 6528008, 6591687, 7107855, 7140085