Siemens SITRANS P DS III Operating Instructions Manual page 82

Operation
6.5 Local operation
I
I
MA
I
ME
p
p
ref
Figure 6-7
Example of adjusting with reference pressure
A Initial situation
B Calculating start of scale value
C Calculating full scale value
Explanations for the example of adjusting with reference pressure
A The measuring range is from 0 to 16 bar. You are changing the start of scale value from
B Use the [M] button to set the transmitter to mode 2.
C Use the [M] button to set the transmitter to mode 3.
82
Output current
Current to be adjusted with MA
Current to be adjusted with ME
Pressure
Existing reference pressure
Current calculation formula for setting with reference pressure
0 to 2 bar and the full scale value from 16 to 14 bar. The measuring span is then 12 bar.
A reference pressure of 11 bar is created.
The "Current calculation formula for adjusting with reference pressure" can be used to
calculate the current to be adjusted for the desired start of scale value I
2 bar) with the existing reference pressure. It can be adjusted with the [↑] or [↓] buttons
I .
MA
The "Current calculation formula for adjusting" can be used to calculate the current to be
adjusted for the desired full scale value I
pressure. It can be adjusted with the [↑] or [↓] buttons I
MA Old start of scale value
actual
ME Old full scale value
target actual
MA New start of scale value
target target
ME New full scale value
target
(16 mA at 14 bar) with the existing reference
ME
Operating Instructions, 06/2013, A5E00047092-09
(13 mA at
MA
.
M
SITRANS P DS III with HART