Proline Prosonic Flow 91 Description of device functions
Endress+Hauser 77
11.8 Group CURRENT OUTPUT
Functional description CURRENT OUTPUT
!
Note!
The functions of the CURRENT OUTPUT group are only available if the "0" value was entered in the BUS
ADDRESS function → ä 84.
CURRENT RANGE Use this function to specify the current range. You can configure the current output either
in accordance with the NAMUR recommendation (max. 20.5 mA) or for a maximum
drive of 25 mA.
Options:
OFF
4-20 mA (25 mA)
4-20 mA (25 mA) HART
4-20 mA NAMUR
4-20 mA HART NAMUR
4-20 mA US
4-20 mA HART US
Factory setting:
4-20 mA (25 mA) HART NAMUR
Current span, operational range and signal on alarm level
a0005392
A = Work range
m = Work range
n = Lower signal on alarm level
o = Upper signal on alarm level
p = Scaled full scale value
Q = Flow
!
Note!
• If the measured value is outside the measuring range (defined in the VALUE 20 mA
function → ä 78), a notice message is generated.
• The current output's response to faults is defined in the central FAILSAFE MODE
function → ä 99.
20
0
I [mA]
Q
m
n
o
p
A
4-20 mA NAMUR
4-20 mA US
4-20 mA (25 mA)
3,8 - 20,5 mA
3,5 22,6
3,9 - 20,8 mA
3,75 22,6
4-24mA 2 25
4-20 mA HART NAMUR
3,8 - 20,5 mA
3,5 22,6
4-20 mA HART US
3,9 - 20,8 mA
3,75 22,6
4-20 mA (25 mA) HART
4-24mA 2 25
nom
OFF
4mA
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