1.1 Measuring system
In the simplest case, the complete measuring system comprises
•
a Deltabar S with 4…20 mA current output
•
an optional four-character display for pressure
•
power supply unit for 11.5 to 45 V DC
The HART protocol versions have a digital communication signal superposed on the
current signal which is used for remote calibration.
These transmitters have extended functions so that level or flow can also be measured.
The device is operated:
•
via the Commuwin II operating program
•
via the Universal HART Communicator DXR 275 handheld (HART protocol).
0
1234
56
7
8
9
AB
CD
E
F
0
1234
56
7
8
9
AB
CD
E
F
4...20
mA
Te
st
1
2
3
+
−
E
X
0 - 25
mbar
I
O
FMD 230:LIC0001
Online
1 >Group Select
2 PV
20 mbar
HELP
Measuring system with
display
11.5…45 V
4…20 mA
Measuring system with handheld terminal
BA174Y0
5
Min. communication resistance 250
Ω
Fig. 1.3
Deltabar S measuring system
with display and/or handheld
terminal
Deltabar S
1 Introduction
Hauser
7
