Vega VEGAPULS 64 Operating Instructions Manual page 40

6 Set up with the display and adjustment module
40
– Large distance from sensor to water surface
– Extreme damping of output signal due to wave generation
– Ice and condensation on the antenna possible
– Spiders and insects build nests in the antennas
– Floating material and animals sporadically appear on water
surface
•
Properties, sensor:
– Stable and reliable measured values through frequent averag-
ing
– Insensitive in the close range
- Open flume (flow measurement):
•
Rate of level change: slow level change
•
Process/measurement conditions:
– Ice and condensation on the antenna possible
– Spiders and insects build nests in the antennas
– Smooth water surface
– Exact measurement result required
– Distance to the water surface normally relatively large
•
Properties, sensor:
– Stable and reliable measured values through frequent averag-
ing
– Insensitive in the close range
- Rain water spillover (weir):
•
Rate of level change: slow level change
•
Process/measurement conditions:
– Ice and condensation on the antenna possible
– Spiders and insects build nests in the antennas
– Turbulent water surface
– Sensor flooding possible
•
Properties, sensor:
– Stable and reliable measured values through frequent averag-
ing
– Insensitive in the close range
- Demonstration:
•
Adjustment for all applications which are not typically level meas-
urement
– Instrument demonstration
– Object recognition/monitoring (additional settings required)
•
Properties, sensor:
– Sensor accepts all measured value changes within the measur-
ing range immediately
– High sensitivity to interference, because virtually no averaging
Vessel form
Apart from the medium and the application, the vessel form itself can
influence the measurement. To adapt the sensor to these measuring
conditions, this menu item offers different options for vessel bottom
and ceiling for certain applications.
VEGAPULS 64 • 4 ... 20 mA/HART - two-wire