WIKA CPH6000 Betriebsanleitung Seite 19

ProcessCalibrator
CPH6000
Initially the test assembly must be mechanically constructed and, if necessary,
electrically connected (both in accordance with the previous Chapters).
Before switching the CPH6000 on, it should be ensured that the test assembly is
not pressurised (System is vented to atmosphere) and that the equipment is cor-
rectly assembled (correct mounting position).
In particular, assemblies with small measuring ranges (e.g. < 1 bar)
are orientation dependent (i.e. the mounting position influences
the measured signal considerably). This can be compensated, if
necessary, using the Tare function (see Chapter 10.1 "SETUP-
Additional menu options: Functions").
Absolute-pressure measuring ranges < 1 bar are, by definition, in
an overload condition at atmospheric pressure. Therefore no
measured value appears in the display, but rather 3 dashes,
indicating a pressure outside of the measuring range of the
attached sensor. If the pressure is reduced, so that it falls within
the permissible measuring range, then the measured value
appears in the display. Since absolute pressure measuring ranges
< 1 bar are always "overloaded" at atmospheric pressure, for
these measuring ranges the "Overload" time limit function is
deactivated in the "SETUP" menu option: Reference Sensor" (see
Chapter 10.3).
Compensation for height differences

If a significant elevation difference exists between the Reference Sensor
(CPH6000) and the test specimen, then the pressure difference, based on the
head pressure, can be compensated automatically via the menu.
(See Chapter 10.5 "SETUP-Additional menu options: CPH-Settings").
Note: After switching on the CPH6000, a brief device status message
appears showing the current settings.
WIKA Operating Instructions ProcessCalibrator
GB
19