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WIKA operating instruction, model CPP120-X
EN
08/2020 EN/DE
6. Commissioning, operation
If the model CPP120-X pneumatic comparison test pump is used as a dead
weight tester in combination with a model CPS3500 piston cylinder system
the levelling procedure should be carried out after the piston system has
been fitted.
The spirit level should be placed on the weight carrier during the levelling
procedure.
6.4 Assembly
6.4.1 Connection of the test item and the reference measuring instrument
▶
The instrument to be tested and the reference measuring instrument are inserted into
the two test connections
1
and can be oriented.
⇒
It doesn’t matter which port is used for which instrument.
⇒
No excess force is required!
As standard, the test connections
1
are G ½ female.
For calibrating instruments with other connection threads, the appropriate thread adapter
can be used (see chapter 11 "Accessories").
When using thread adapters, the thread adapter has to be connected
pressure tight to the test item first.
After that the test item with mounted adapter can be inserted into the test
connection
1
and can be oriented.
▶
Before adapting the reference pressure measuring instrument and the test item, check
the sealings in the two connections for correct seating and wear.
⇒
Replace the sealings, if necessary.
CAUTION!
Damage to the hand test pump due to contamination
Contaminants of any kind (oil, grease, water ...) that adhere to the test item
will find their way into the pump and damage it.
▶
Ensure that the mating faces are absolutely clean.
▶
Clean the connections if necessary.
▶
Clean the test item and reference instrument before mounting.
▶
To mount or dismount a pressure gauge to the test connections
1
a suitable spanner
hast to be used. The spanner has to put only to the spanner flats. Otherwise the
pressure gauge or the comparison test pump can be damaged.
⇒
Ensure that the lower part of the gauge connection is not rotated as this may
release the gauge stand from the CPP120-X.