VEGA VEGASWING 66 - two-wire With SIL qualification - Manual (Page 23)

23
6 Setup
VEGASWING 66 • - two-wire
44952-EN-130805
With the mode adjustment (min./max.) you can determine the output
current.
Note:
When using a VEGATOR signal conditioning instrument, always set
the mode switch (4) to max. mode.
In this case you select the requested mode according to the "Function
chart" (max. - max. detection or overfill protection, min. - min.detection
or dry run detection) on the VEGATOR signal conditioning instrument.
When used on a control system, the following values apply:
•
Mode min.
– Vibrating element uncovered - 16 mA ±1.5 mA
– Vibrating element covered - 8 mA ±1.5 mA
•
Mode max.
– Vibrating element uncovered - 8 mA ±1.5 mA
– Vibrating element covered - 16 mA ±1.5 mA
With this DIL switch (5) you can set the switching point to liquids hav-
ing a density between 0.5 and 0.7 g/cm³ (0.018 - 0.025 lbs/in³). With
the basic setting, liquids with a density of ≥ 0.7 g/cm³ (0.025 lbs/in³)
can be detected. In liquids with lower density, you must set the switch
to ≥ 0.5 g/cm³ (0.018 lbs/in³). The specifications for the position of the
switching point relate to water - density value 1 g/cm³ (0.036 lbs/in³).
In products with a different density, the switching point will shift in the
direction of the housing or tuning fork end depending on the density
and type of installation.
Note:
Keep in mind that foams with a density > 0.45 g/cm³ (0.016 lbs/in³)
are detected by the sensor. This can lead to erroneous switchings,
particulary when the sensor is used for dry run protection.
Note:
In case of strong boiling or deployment processes as well as extreme
outgasing, the density of the gas/product mixture on the product
surface can be so low that it can be no longer detected by the sensor.
This can cause faulty switchings.
With key (6) you can activate the test process. You interrupt the volt-
age supply as long as you are pressing the key. The test process will
be carried out after releasing the key.
6.3 Function chart
The following chart provides an overview of the switching conditions
depending on the set mode and the level.
Note:
Keep in mind that the mode switch of VEGASWING 66 must be
always set to "max.".
Mode setting (4)
Sensitivity adjustment (5)
Test key (6)