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WIKA operating instructions, model CPH7650
EN
14261987.02 01/2019 EN/DE
6. Commissioning, operation
Should the instrument be switched into
MEASURING
mode (with test item = display
of the test item signal as an electrical signal or as a pressure), in order to carry out a
comparative measurement or calibration without measured-value recording, then follow
the instructions on the previous page.
The following is a more detailed explanation of point 2 “Preparing for
MEASURING”:
1
Test item type and test item measuring signal
0 ... 20 mA / 4 ... 20 mA / 0 ... 1 V / 0 ... 2 V / 0 ... 5 V / 0 ... 10 V / or mechanical for dial
pressure gauge
If a comparative measurement with a mechanical dial instrument (test item) is being
made, then the gauge’s measured value should be entered via the numeric keypad and
confirmed with the
[ENTER]
button.
The CPH7650 is only suitable for measuring DC voltage and DC current
signals.
2
Start of measuring range and end of measuring range of the test item currently to be
calibrated
3
Unit and resolution (submenu)
4
Measurement uncertainty of the test item in % FS (i.e. of the span) or % rd (i.e. of reading)
5
Measurement type for the test item (gauge or absolute)
6
Test medium (pneumatic → gas or hydraulic → oil)
7
Voltage supply for test item (on/off)
If no external supply is required for the test item,
“OFF”
should be selected to conserve
energy (also see chapter 4.3 “Electrical connections to the CPH7650”).
Unit of test item
10.000
Resolution:
1.00000
User:
mmHg
inH2O
kg/cm2
mmH2O
cmH2O
mH2O
Pa
kPa
MPa
cmHg
inHg
psi
hPa
mbar
bar
...Unit/Resolution
Customer-specific unit; with respect to bar
(input via numeric keypad)
Display resolution in operating mode via ◀ or ▶
(back with the
[BACK]
button)
Select and confirm (standard unit) via [◀], [▶], [▲] or [▼]