Siemens MS Series, Инструкция по эксплуатации, Страница: 90 / 130

SITRANS P, MS series
90
C79000-B5674-C40-04
On-site Operation and Display
3.2.4 Signal Range
The output signal is divided into defined ranges (Figure 17, p. 95).
The transmitter converts the measured pressure into an output current which is nor-
mally in the range from 4 mA (start of scale) to 20 mA (full scale).
On exceeding the measuring limits, measured values are displayed correctly in the
underflow or overflow range. The message "UNDER" or "OVER" appears alternately
with the selected unit in place of the bargraph. The possible overflow range can be
adjusted through HART®. If the overflow or underflow range is exceeded, the output
current remains constant. or appears on the digital indicator. See also NAMUR
recommendation NE 43 "Standardization of signal level for failure information of dig-
ital transmitters with analog output signal" of 18.01.94.
Figure 14 Error message, example "Sensor"
NOTE
The setting of the overflow range and the fault current range is freely selectable.
Useful setting possibilities are shown in Figure 17, p. 95.