Vega VEGAPULS 66 (≥ 2.0.0 - ≥ 4.0.0) standpipe ver. 4 … Manuel d'utilisateur télécharger pdf (Page 34)

9 Diagnosis, Asset Management and service

VEGAPULS 66 standpipe version • 4 … 20 mA/HART - four-wire

36524-EN-121011

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 diagno-

sis purposes. The data remain even with voltage interruption.

Up to 60,000 measured values can be stored in the sensor in a ring

memory. Each entry contains date/time as well as the respective

measured value. Storable values are for example:

•

Distance

•

Filling height

•

Percentage value

•

Lin. percent

•

Scaled

•

Current value

•

Meas. reliability

•

Electronics temperature

When the instrument is shipped, the measured value memory is

active and stores distance, measurement certainty 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.

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:

•

Modication of a parameter

•

Switching on and o times

•

Status messages (according to NE 107)

•

Error messages (according to NE 107)

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 measure-

ment conditions during operation or buildup on the sensor can thus

be recognized. The echo curve of the setup is stored via:

•

PC with PACTware/DTM

•

Control system with EDD

•

Indicating and adjustment module

Measured value memory

Event memory

Echo curve memory

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Vega VEGAPULS 66 (≥ 2.0.0 - ≥ 4.0.0) standpipe ver. 4 … Manuel d'utilisateur Page 34

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