Wika CPH6000 Uživatelský manuál stáhnout pdf (Strana 31)

31WIKA operating instructions ProcessCalibrator, model CPH6000

11069023.04 11/2012 GB/D

6.5 Zero point and/or oset correction

Zero adjustment for overpressure instruments

If the measured value shown on the CPH6000, with a positive/relative pressure sensor

connected and the test assembly vented to atmosphere, is not equal to zero, then by

pressing the CLEAR key twice (within ve seconds), the zero point can be corrected

(maximum allowable correction value is twice the magnitude of the accuracy class).

Oset correction for absolute pressure sensors

For absolute pressure sensors, an oset correction can be made via the menu (see

chapter 7.4.3 "SETUP additional menu items: ReferenceSensor")

7. Commissioning, operation

Instrument features

The instrument features 3 operating modes: MEASURING / CALIBRATION / SWITCH-

TEST, which each oer the user the maximum possible convenience in relation to the

application. To power the test items and to read their measurement signals, there are

various electrical inputs and outputs, which, as an option, can be shielded from harsh

eld conditions by captive protective covers.

In the MEASURING (with test specimen) and CALIBRATION operating modes, the

measured values of both the reference pressure sensor and the test item, as well as

their deviation, are displayed in both current pressure units and in %.

In this way the operator is immediately informed whether the test item meets the

accuracy-class or not. The dierence between these two modes is that the calibration

data in CALIBRATION mode are stored internally and can later be transferred onto

printable certicates through software (PrintCal or EasyCal).

For the transfer of data to a PC, the CPH6000 ProcessCalibrator has both an RS-232

and a USB connection, selectable via menu.

SETUP menu

Using the SETUP key, one can access the SETUP menu, where the required operating

mode (MEASURING / CALIBRATION / SWITCH-TEST) can be selected and

congured, a stored function can be recalled or a general instrument setting (such as

the menu language) can be changed.

6. Installation and mounting / 7. Commissioning, operation

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Wika CPH6000 Uživatelský manuál Strana 31