Siemens SITRANS LG270 Operating Instructions Manual page 43

Diagnostics - Echo curve
Diagnosis - Simulation
PBD-51041064
In another window you can carry out a reset of the two peak values
separately.
Information:
If one of the display values flashes, there is actually no valid value
available.
The menu item "Echo curve" shows the signal strength of the echoes
over the measuring range in V. The signal strength enables an evalua-
tion of the quality of the measurement.
With the following functions you can zoom part sections of the echo
curve.
•
"X-Zoom": Zoom function for the meas. distance
•
"Y-Zoom": 1, 2, 5 and 10x signal magnification in "V"
•
"Unzoom": Reset the presentation to the nominal measuring range
without magnification
In this menu item you can simulate measured values via the current
output. This allows the signal path to be tested, e.g. through down-
stream indicating instruments or the input card of the control system.
Select the requested simulation variable and set the requested value.
Caution:
During simulation, the simulated value is outputted as 4 ... 20 mA cur-
rent value and digital HART signal.
SITRANS LG270 - Operating Instructions
43