Vega VEGABAR 81 Profibus PA - Operating Instructions Bedienungsanleitung PDF herunterladen (Seite 49)

9 Diagnosis, asset management and service

VEGABAR 81 • Probus PA

45020-EN-131107

9 Diagnosis, asset management and service

9.1 Maintenance

If the instrument is used properly, no special maintenance is required

in normal operation.

In some applications, product buildup on the diaphragm can inuence

the measuring result. Depending on the sensor and application, take

precautions to ensure that heavy buildup, and especially a hardening

thereof, is avoided.

9.2 Diagnosis 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:

•

Pressure

•

Dierential pressure

•

Level

•

Flow

•

Density

•

Interface

•

Percentage value

•

Lin. percent

•

Scaled values

•

Measuring cell temperature

•

Electronics temperature

When the instrument is shipped, the measured value memory is

active, saving distance, measurement certainty and electronics tem-

perature every minute.

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

•

Switch-on and switch-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.

9.3 Asset Management function

The instrument features self-monitoring and diagnostics according

to NE 107 and VDI/VDE 2650. In addition to the status messages in

Maintenance

Measured value memory

Event memory

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