VEGA VEGAPULS 68 (≥ 2.0.0 - ≥ 4.0.0) Foundation Fieldbus User Manual

Page 23

4 Mounting

VEGAPULS 68 • Foundation Fieldbus

36538-EN-121011

Distance d

(m)

2°

4°

6°

8°

10°

2.3

4.5

6.8

9.1

11.5

2.4

4.9

7.4

9.8

12.3

2.6

5.2

7.9

1.0

Example:
In a vessel 20 m high, the installation position of the sensor is 1.4 m

from the vessel centre.
The necessary angle of inclination of 4° can be read out from this

chart.
Proceed as follows to adjust the angle of inclination with the swivelling

holder:
1. Loosen terminal screw of the swivelling holder with a fork spanner

SW 13

2. Direct the sensor, check angle of inclination
Information:

The max. angle of inclination of the swivelling holder is approx. 15°
3. Tighten the terminal screw, torque max. 20 Nm.
Information:

The hexagon screws must not be loosened.

The mounting location of the radar sensor should be a place where no

other equipment or fixtures cross the path of the microwave signals.
Vessel installations, such as e.g. ladders, limit switches, heating spi-

rals, struts, etc., can cause false echoes and impair the useful echo.

Make sure when planning your measuring site that the radar sensor

has a "clear view" to the measured product.
In case of existing vessel installations, a false echo storage should be

carried out during setup.
If large vessel installations such as struts or supports cause false

echoes, these can be attenuated through supplementary measures.

Small, inclined sheet metal baffles above the installations scatter the

radar signals and prevent direct interfering reflections.

Fig. 18: Cover smooth profiles with deflectors

If there are agitators in the vessel, a false signal suppression should

be carried out with the agitators in motion. This ensures that the

interfering reflections from the agitators are saved with the blades in

different positions.

Vessel installations

Agitators