1.1 Measuring system
The complete measuring system consists of
•
Cerabar S pressure transmitter with 4…20 mA signal output
•
optional four-character pressure display
•
supply voltage for non-hazardous area: 11.5…45 V DC,
EEx ia: 11.5…30 V DC, EEx d and EEx d[ia]: 13…30 V DC, EEx nA: 11.5…36 V DC
For electronic versions with HART or INTENSOR protocol, a digital communication signal
is superimposed on the signal current and is used for remote calibration.
These instruments have additional functions also to measure level.
Operation can be carried out using:
•
the Commuwin II operating program
•
the universal HART Communicator DXR 275 (HART protocol)
•
the Commulog VU 260 Z handheld terminal (INTENSOR protocol)
0 - 10 bar
Cerabar S
with display
4…20 mA
BA187Y06
Supply voltage,
e.g. with
transmitter
power supply
unit RN 221N
Figure 1.3
Cerabar S measurement system
with display
1 Introduction Cerabar S
10 Endress+Hauser
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