Vega VEGAPULS 6X - Diagnosis, asset management and service; Maintenance; Measured value and event memory

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14 Diagnosis, asset management and service
VEGAPULS 6X • Two-wire 4 … 20 mA/HART
66190-EN-221107
14 Diagnosis, asset management and service
14.1 Maintenance
If the device is used properly, no special maintenance is required in
normal operation.
Note:
In some applications, product buildup on the antenna system can
inuencethemeasurementresult.
Depending on the sensor and application, take measures to avoid
heavy soiling of the antenna system. If necessary, clean the antenna
system in certain intervals.
The cleaning helps that the type label and markings on the instrument
are visible.
Note:
Unsuitable cleaning agents and methods can damage the device. To
avoid this, observe the following:
•
Use only cleaning agents which do not corrode the housings, type
label and seals
•
Use only cleaning methods corresponding to the housing protec-
tion rating
14.2 Measured value and event memory
The instrument has several memories available for diagnostic pur-
poses. The data remain there even in case of voltage interruption.
Up to 100,000 measured values are stored in the sensor in a ring
memory. Each entry contains date/time as well as the respective
measured value.
Storable values are for example:
•
Distance
•
Filling height
•
Percentage value
•
Lin. percent
•
Scaled
•
Current value
•
Measurement reliability
•
Electronics temperature
When the instrument is shipped, the measured value memory is
active and stores distance, measurement reliability and electronics
temperature every 3 minutes.
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.
Maintenance
Precaution meas-
ures against buildup
Cleaning
Measured value memory