WIKA CPP1000-L, Руководство по эксплуатации, Страница: 9 / 81

Example: A calibration assembly with the CPP1000-M/-L and a CPH6000
process calibrator as the reference instrument and a pressure transmitter as
the test specimen
11178035 12/2010 GB/D/F/E
WIKA Operating Instructions Hand Spindle Pump
Hand Spindle Pump
CPP1000-M/-L
9
For calibration cycles with larger volumes, it is advisable to fill the
test specimen/reference with the operating liquid beforehand or to
use the shut-off valve for test connection, which is available as an
accessory (see chapter 9. Accessories).
3.1.4 Venting the system
After the measuring instrument has been mounted, further trapped air can be found
in the system. The system can be vented before the start of the calibration using the
following procedure:
■
Open the shut-off valve on the reservoir.
■
Turn the star handle anticlockwise until fully out/open.
■
Close the valve.
1) Turn the star handle clockwise until the test specimen and/or the reference
indicates a pressure of approx. 50 to 100 bar.
If, after the spindle has been fully wound in in a clockwise direction,
there is no increase in pressure, then the connected test volume
is too large, and the instruments will need pre-filling with operating
liquid before being attached to the pump or the shut-off valve for test
connection, which is available as an accessory, is to be used (see
chapter 9. Accessories).
GB