49
6 Set up with the display and adjustment module
NCR-84 Two-wire 4 … 20 mA/HART
51141-EN-181127
With the
[OK]
key in the reset menu, the peak values are reset to the
current measured value.
The "
Echo curve
" shows the signal strength of the echoes over the
measuring range in dB. The signal strength enables an evaluation of
the quality of the measurement.
The selected curve is continuously updated. A submenu with zoom
functions is opened with the
[OK]
key:
•
"X-Zoom": Zoom function for the meas. distance
•
"Y-Zoom": 1, 2, 5 and 10x signal magnification in "
dB
"
•
"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 output as 4 … 20 mA cur-
rent value and as digital HART signal. The status message within the
context of the asset management function is "
Maintenance
".
To deactivate the simulation, you have to push the
[ESC]
key and
confirm the message
with the
[OK]
key.
Information:
The sensor terminates the simulation automatically after 60 minutes.
The function "
Setup
" allows the echo curve to be saved at the time of
setup.
Diagnosis - Curve indica-
tion
Diagnosis - Simulation
Diagnostics - Echo curve
memory
925-0373 Rev A