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Smart Storm Avocet - Sludge Blanket Monitor System
The Avocet Sludge Blanket monitors the sedimentation and scum accumulation in remote settlement tanks and clarifiers in water treatment works, waste water reclamation works and factories with treatment plant. The Avocet is particularly suited for identifying auto-desludging and overspill alarm signals and for monitoring the general biological health of thick sludge blankets. The Avocet Sludge Blanket Monitor gives highly accurate measurements of sludge blanket composition in settlement tanks and clarifiers by utilising extremely high frequency ultrasound sensors (1.1MHz) that can detect the lowest sludge density found in secondary clarifiers.
- Graphical Display of Sludge Interface
- Powerful Signal Processing to Extract Low Density Sludge Interface
- Simple Programming
- IP 65 Wall mounted weatherproof enclosure
- 3 Programmable relays
- Air Purged Sensor Cleaning
- 4-20mA output
- RF Link
- Water and Waste Water
- Primary Sedimentation
- Secondary and Final Clarifiers
- Remote Settlement Tanks
- Sludge Thickeners
- DAF Tanks
- Sequential Batch Reactors
- Lamella Clarifiers
- Counter Current Decantation (CCD) Tanks
- Mining and Process settling Ponds and Lagoons
Technology/Operation
- Measuring Principle: Underwater ultrasonic sludge level measurement
- Measuring Range: 0.6-12 metres (2-39 ft)
Performance
- Accuracy: +/- 0.03m
- Resolution: 0.003m
- Response Rate: Fully adjustable
- Echo Processing: Sophisticated algorhithms using 32 bit Digital Signal Processing
- Power Supply: 115/230 VAC
Outputs and Communications
- Analogue: 1 4-20mA output, 750Ω
- Digital: 4 SPDT programmable relays, 5A @ 230 VAC (2 user programmable, 1 purge control, 1 LOE)
- Telemetry (optional): Site specific, range up to 2 miles (3km)
- Communication: Standard RS232, optional RS485
Programming
- User Interface: 3-button keypad with menu driven programming
- Echo Profile: Graphical LCD display of raw echo profile
- Programming Security: Password protected
- Data Integrity: Non-volatile RAM
Environment
- Temperature Range (electronics): -20°C to +60°C (-4°F to +140°F)
- Outdoor Rating: IP65, UL Approved Enclosure with UV Protected Clear Lid
Design
- Dimensions: 280 x 219 x 156 mm (11.0 x 8.6 x 6.1 inch)
- Cable Entry: 8 Available for Wall Mount: 1xM12, 1xPG9, 5xM20 bottom row
- Mounting: 2 Fixed Holes & 1 Hanging Hole, Optional DIN Rail Tabs
- Enclosure Material: Polycarbonate, flmae resistant to UL94-5V
- Weight: Approximately 1.4Kg (3 lbs)
Transducer Specifications
- Standard Cable Length: 20 metres (66 ft), optional custom lengths
- Cable Specification: Shielded Coax Cable
- Maximum Cable Run: 50 metres (150 ft)
- Temperature Range (Transducer): -40°C to +95°C (-40°F to +200°F)
- Dimensions: 50mm diameter x 75mm length (2 x 3 inches)
- Mounting: 1 inch NPT Male Thread
- Material: PVC Housing, IP68 Rating
- Beam Angle & Frequency: 6° total, 12. MHz
- Cleaning: Hose Tail Air Pipe Connector for Air Purge
- Cleaning Frequency: User-programmable, 1-720 minutes (12 hours)
- Weight: Approximately 0.5 Kg (1 lbs)