1.1 Measuring system
Measuring point In the simplest case, the complete measuring point comprises:
•
Cerabar S transmitter with Foundation Fieldbus protocol
•
Network Configuration Tool, e.g. National Instruments Fieldmanager
Number of transmitters
The maximum number of transmitters on a bus segment is determined by their current
consumption, the required bus length and if installed the power of the link.
Normally, however:
•
10 Cerabar S for EEx ia applications
•
max. 32 Cerabar S for non-hazardous application
can be operated on a bus segment. Cerabar S consumes max. 11.5 mA per device.
Refer also to the FF specification or IEC 61158-2 or to the Internet address
"http://www.fieldbus.org".
TT
0- 10 bar0- 10 bar
0- 10 bar0- 10 bar
0- 10 bar0- 10 bar
Personal
computer e.g.
with NI-FBUS
configurator
BA211Y06
Cerabar S with
FF protocol
power supply
power conditioner
Figure 1.3
Measuring point with Cerabar S
T: bus terminator
1 Introduction Cerabar S FF
8 Endress+Hauser
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