Special Features; Different Pressure Units; Different Measuring Rates - WIKA CPH6300 Betriebsanleitung

6 Commissioning, Operation
6.4

Special Features

6.4.1 Different Pressure Units

Depending on the connected sensors different units can be selected via menu (Unit). The
GB
measuring range of the sensors may restrict the choice!
User-Unit
For pressure units, which are not covered by the ones printed on the display, there can be done a
manual setting for a "user-defined" unit.
Example:
To enable a reference pressure sensor CPT6200 to display the unit kg/cm
(bold) have to be entered:
bASE user:
DP user:
FACt user:

6.4.2 Different measuring rates

Three different kinds of pressure measuring are supported. Two of them (P.dEt and FASt) are
working with high measuring frequency of more than 1000 measurings per second.
6.4.2.1 Standard measuring (slow)
Measuring rate 4 Hz, averaging and filter functions are active.
Application: Measuring of slowly changing or static pressures, e.g. leak testing,
atmospheric pressure, etc.
Highest accuracy, high noise immunity, low power consumption.
6.4.2.2 Peak detection (Peak detection)
Measuring rate >1000 Hz, the value is displayed unfiltered.
Application with logger function: Measuring of short pressure peaks or fast changing
pressures with a resolution of <1 ms. The cyclic logger function records the arithmetic
mean value, the highest and the lowest peak of the referring time interval.
6.4.2.3 Fast filtered measuring (fast)
Measuring rate >1000 Hz, but the value is filtered (higher noise immunity than P.dEt,
short peaks will be filtered out), apart from that identical behavior like rAtE-P.dEt.
18
2
kg/cm Torr atm
bar
mbar bar
.0000
.0000 .0000
1.0197 .7433 0.9869 1.0197
This measuring is sensitive to noise (EMI, ...) and power consumption is
enhanced.
at
bar
.0000
WIKA Operating Instruction, Model CPH6300
2
, following settings