Heinrichs Messtechnik GmbH
OPERATING MANUAL TMU / UMC3
Page 91 of 122
7.2.10.1
Current output I1 4 to 20 mA
The “Current output I1 4 to 20 mA” function allows the operator to define the range in which the current output
is to be operated.
Press “
” to display the current setting.
Current output I1
[4] – 21.6 mA
The current assignment will be displayed and can be changed by toggling the arrow keys.
The operator can choose between the settings:
0 – 21.6 mA
largest resolution / No HART
communication possible
4 – 20.5 mA
follows the NAMUR recommendation
4 – 21.6 mA
standard settings
Pressing the “
” key confirms the entry.
The following diagram displays the impacts of the selected setting:
Figure 1: Current Output as NAMUR or Standard
,000 mA
5,000 mA
10,000 mA
15,000 mA
20,000 mA
25,000 mA
0%
20%
40%
60%
80%
100%
120%
Out
put
c
urre
nt
Measured value
Current output
0 - 20 (21,6) mA
4 - 20,5 mA
NAMUR
4 - 21,6 mA
Standard