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WIKA operating instructions, model CPC2000
11155094.04 11/2019 EN/DE/FR/ES
EN
4.3 Pressure connections
Only use original parts (see chapter 12 “Accessories”).
The pressure connections are located on the right-hand side of the front of the CPC2000.
Mechanical and also electrical pressure measuring instruments can be connected.
The hose, lines and fittings etc. must always be approved at least for the working pressure
which corresponds to the pressure of the instrument. In addition, there must not be any
leakage points during the calibration.
4.3.1 Connection of the test item
The connection to the low-pressure controller is made via a 6.6 x 11 mm pressure
connection. The hose diameter should be 6 mm.
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Differential pressure instruments are connected to the ⊕ and ⊖ connections of the
instrument.
■
Gauge pressure instruments are connected to the ⊕ connection (⊖ connection is
open to atmosphere).
■
Instruments for negative gauge pressure are connected to the ⊖ connection (⊕
connection is open to atmosphere).
Only connect test and calibration installations once the system has been
depressurised!
4.3.2 Overpressure protection
The maximum permissible pressure must not be exceeded, see chapter
4. Design and function