Design And Function; Design; Functions And Data Transfer With The Wika-Cal Calibration Software - WIKA CPH7000 Betriebsanleitung

4. Design and function

4. Design and function
The model CPH7000 process calibrator is a battery-powered, precise, portable calibrator for the on-site calibration and
checking of analogue pressure measuring instruments, pressure transmitters and process transmitters. Furthermore, pressure
EN switches can be checked and the switch point determined. With the CPH7000, not only can transmitters be checked, but also
simulated and tested.
The CPH7000 can be operated by means of a clearly structured touchscreen. The integrated rechargeable battery allows the
CPH7000 to be used daily in the field.
4.1

Design

The CPH7000 can optionally be equipped with an integrated reference pressure sensor as well as an integrated manual
pressure generation (pressure sensor only available in conjunction with pressure generation), with which pressures from
-0.85 ... +25 bar (-12.3 ... +360 psi) can be generated.
A pressure connection enables a calibration item (test item) to be connected to the reference pressure sensor as well as to
the integrated pressure generation of the CPH7000. The integrated pump (optional) allows you to generate different pressure
ratings and thus to carry out a calibration.
An external separate pressure generation up to 25 bar (360 psi) is thus not necessary.
Transmitter output signals can simultaneously be measured via an electrical module, thus enabling the simultaneous display
of the reference and test item value on the screen. This allows a complete transmitter calibration to be carried out with just the
CPH7000.
In addition to the integrated sensor, it is also possible to connect up to two external reference pressure sensors to the
CPH7000, thus enabling the measurement of pressure also in other pressure ranges or differential pressure. Communication
between CPH7000 and pressure sensors is digital.
The ambient atmospheric pressure is measured via an integrated barometric reference which can optionally be integrated
in the case. This also enables gauge pressure sensors to be converted into absolute pressure. The ambient conditions
(temperature and humidity) can be measured by means of an additional external atmospheric module. To the connection for
the atmospheric module, it is also possible to connect a temperature probe Pt100.
4.2

Functions and data transfer with the WIKA-Cal calibration software

The calibrator offers the possibility to create calibration routines quickly and easily, but also to carry out preconfigured
calibration routines. An integrated memory allows the recording of logger cycles as well as calibrations on site.
The completed calibration processes can be transmitted to a PC via WIKA-Wireless.
As soon as a connection exists over WIKA-Wireless, it can communicate with the WIKA-Cal calibration software from version
1.0.66. Data can also be transferred using Windows Explorer.
A complete paperless transmitter calibration can be carried out using the CPH7000 and WIKA-Cal.
As the CPH7000 features an electrical module, the hand-held also has to be set up as a multimeter.
12 WIKA operating instructions portable process calibrator, model CPH7000