Vega PLICSCOM Bedienungsanleitung PDF herunterladen (Seite 16)

5 Setup - Sensors up to software 3.99

PLICSCOM •

36433-EN-130228

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Min. and max. temperature: ultrasonic sensors, pressure transmit-

ters

Peak value

When non-contact level sensors are used, the measurement can be

inuencedbytherespectiveprocessconditions.Inthismenuitem,

the measurement reliability of the level echo is displayed as dB value.

The measurement reliability equals signal strength minus noise. The

higher the value, the more reliable the measurement. With a function-

ing measurement, the values are > 10 dB.

The instrument status is displayed in this menu item. If no failure is

detected by the sensor, "OK" will be displayed. If a failure is detected,

therewillbeasensor-specicashingfaultsignal,forexample

"E013". The failure is also displayed in clear text, for example "No

measured value available".

Information:

The fault message as well as the clear text indication are also carried

out in the measured value display.

Meas. reliability

Sensor status

In ultrasonic and radar sensors as well as sensors with guided

microwave, the "Echo curve" represents the signal strength of the

echoes over the measuring range. The units of the signal strength are

"dB" (ultrasonic and radar) and "Volt" (guided microwave). The signal

strength allows an assessment of the quality of the measurement.

With ultrasonic and radar sensors, the "False echo curve" repre-

sents the saved false echoes (see menu "Service") of the empty

vessel with signal strength in "dB" over the measuring range.

Up to 3000 measured values are recorded (depending on the sensor)

when starting a "Trend curve". Then the values can be displayed on

a time axis. The oldest measured values are always deleted.

In the menu item "Choose curve", the respective curve is selected.

Curve selection

Echo curve

▼

Diagnosis/Measurement

reliability

Diagnostics/Device

status

Diagnosis/Curve selec-

tion

Pressure: -50 … +150 % of the nominal pressure range; temperature:

-50 … +150 °C.

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