VEGA VEGAPULS 61 (≥ 2.0.0 - ≥ 4.0.0) 4 … 20 mA_HART four-wire Approval according to LPR radio standard - Manual (Page 52)

9 Diagnosis, Asset Management and service
9 .1 Maintenance
If the device is used correctly, no maintenance is required in normal
operation.
9 .2 Measured value and event memory
The instrument has several memories which are available for
diagnosis purposes. The data remain even with voltage interruption.
Up to 70,000 measured values can be stored in the sensor in a ring
memory. Each entry contains date/time as well as the respective
measured value.
Stored values are for example:
l Original sensor value
l Filling height
l Measured value
l Meas. reliability
l Electronics temperature
The requested values and recording conditions are set via a PC with
PACTware/DTM or the control system with EDD. Data are thus read
out and also reset.
Up to 500 events are automatically stored with a time stamp in the
sensor (non-deletable). Each entry contains date/time, event type,
event description and value.
Event types are for example:
l Modification of a parameter
l Switching on and off times
l Status messages
l Error messages
The data are read out via a PC with PACTware/DTM or the control
system with EDD.
The echo curves are stored with date and time and the corresponding
echo data. The memory is divided into two sections:
Echo curve of the setup: This is used as reference echo curve for the
measurement conditions during setup. Changes in the measurement
conditions during operation or buildup on the antenna can thus be
recognized.
The echo curve of setup is stored via:
l PC with PACTware/DTM
l Control system with EDD
l Indicating and adjustment module
Measured value memory
Event memory
Echo curve memory
52 VEGAPULS 61 • Approval according to LPR radio standard
9 Diagnosis, Asset Management and service
41714
-EN
-120301