User Manual

9 Diagnosis and service
9.1 Maintenance
When the device is used correctly, no maintenance is required in
normal operation.
9.2 Measured value and event memory
The instrument has an integrated measured value memory with time
stamp. Up to 100,000 measured values can be saved in the sensor in
a ringing memory. Each entry contains date/time as well as the
respective measured value.
Stored values are for exmaple sensor value, level, current value,
reliability and electronics temperature. The data remain even in case of
voltage interruption.
Via a PC with PACTware/DTM or the control system with EDD, the
requested values and recording conditions are stipulated. Data are
also read our or reset.
The instrument has an integrated event memory with time stamp. Up to
500 events which cannot be deleted are stored in the sensor. Each
entry contains date/time, event time, event description and value.
Event types are for example modification of a parameter, status and
error messages as well as switch on and switch off times. The data
remain also in case of voltage interruption.
The data are read out via a PC with PACTware/DTM or the control
system with EDD.
The instrument has an integrated echo curve memory in which echo
curves can be stored for diagnosis purposes. The echo curves are
stored with date and time as well as the corresponding echo data. The
data remain even in case of voltage interruption. The memory is
divided ito two sections:
Echo curve of the setup: here you can store the echo curve as a
reference during setup. This echo curve can be used for example to
detect changes of the installation conditions or buildup on the antenna.
Echo curve memory: in this memory section up to 10 ec ho curves
can be stored in the sensor in a ring buffer.
Via a PC with PACTware/DTM or the control system with EDD, the
requested values and recording conditions are stipulated. Data are
also read out or reset. The echo curve during the setup can be stored
alternatively also via the indicating and adjustment module.
Measured value memory
Event memory
Echo curve memory
46 VEGAPULS 62 • 4 … 20 mA/HART two-wire
9 Diagnosis and service
36503-EN-100607