Sludge drying
Measurement of belt loading and mass flow in a thermal sludge drying facility
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Process data
Measuring task:
Density measurement
Measuring point:
Conveyor belt
Measuring range up to:
1300 … 1900 kg/m3.
Medium:
Sewage sludge
Process temperature:
+80 ... +130 °C
Process pressure:
0 … 1 bar
Special challenges:
High temperatures, abrasion
Application
Through drying, the weight and volume of the sludge is further reduced. In the thermal drying unit, which is equipped with a belt drier and a hot (+80 to +130 °C) air stream, water is removed from the sludge through evaporation. The continuous monitoring of belt loading is done by means of radiometric, i.e. radiation-based, measurement - this technique allows optimal, cost-effective dryer control.
Your benefit
Reliable
Reliable monitoring of belt loading
Cost effective
Optimal equipment operation
User friendly
Simple external installation
Recommended products
MiniTrac 31
Continuous monitoring of belt charging
- Non-contact measurement of the sludge level in the dryer
- Simple retrofitting during operation
- Optimal, cost-effective dryer control
Measuring range - Distance
-
Process pressure
-
Accuracy
0.1 %
VEGAMET 861
Controller for powering the sensor, processing and displaying the measured values
- Clear, easy-to-read, user programmable display
- Robust housing designed for the harsh conditions in the field
- Universal controller for water and wastewater applications
Protection rating
IP66/IP67, Type 4X
Input
1 x 4 … 20 mA/HART sensor input
2x digital input
Output
1 x 0/4 … 20 mA current output
1x failure relay (instead of operating relay)
4x operating relay
VEGASOURCE 82
The source holder is used to hold and secure the radioactive source
- Small footprint and simple installation
- Operational reliability through pneumatic opening and closing of the source container
- Trustworthy shielding allows use without control area
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