Hopper
Level measurement in the hopper of the trailing suction dredger
Process data
Measuring task:
Level measurement
Measuring point:
Hopper
Measuring range up to:
15 m
Medium:
Sand, gravel and seawater
Process temperature:
-10 ºC … +50 °C
Process pressure:
0 … 0 bar
Special challenges:
Foam, saltwater sprays, extreme weather conditions
Application
The hopper contains a mixture of sand, gravel and water. This mixture is collected by one or two suction pipes and drag heads that move over the seabed. The water flows out through so-called overflows and sand and gravel remain and are transported to an end destination for creating new land, or to be used as a supplementary material or building material. Accurate measurement of filling height, to determine the exact volume of displaced material, is important for smooth operation.
Your benefit
Reliable
Exact measured values are important for smooth operation
Cost effective
Reliable measurement ensures safe and efficient loading and unloading, so that these ships have a longer uptime
User friendly
Maintenance free operation thanks to non-contact measurement
Recommended products
VEGAPULS C 23
Level measurement with non-contact radar in the hopper
- Precise measurement close to the bottom
- Reliable measured values unaffected by foam and heavy weather conditions
- No false echoes from installations like frames or pipes thanks to narrow beam angle
Measuring range - Distance
30 m
Process temperature
-40 ... 80 °C
Process pressure
-1 ... 3 bar
VEGAMET 342
External controller for 4 ... 20 mA HART sensors
- Power supply, value display, relay contacts and sensor adjustment on the bridge
- Easy-to-read display with plain text and graphics
- Simple adjustment via Bluetooth and PACTware or app for smartphone or tablet
Protection rating
IP20/IP40
Input
2 x 4 … 20 mA sensor input
Output
3 x operating relay
1x failure relay (instead of operating relay)
2x 0/4 ... 20 mA current output
