The ECHO Sludge Hunter reliably measures sludge and sediment levels in clarifiers, thickeners, ponds and tanks. The ultrasonic Air Purge Xducer is connected to the Mounting Flex Kit and immersed just below the surface of the water and pointed to the bottom of the tank. The Sludge Hunter uses time of flight echo processing and advanced algorithms to lock on the true sludge interface level and ignore the floating solid particles and troublesome rag layers. The unique patent-pending “Solids Algorithm” has been designed to automatically filter all floating solids particles and electrical noise interference for unmatched performance.
A simple 3-button keypad is used by the operator to input the tank depth. The Sludge Hunter automatically does the rest with its advanced echo processing and signal gain adjustment. The LCD screen displays the echo profile for visual confirmation of the sludge level relative to the tank bottom. A 4-20mA signal is provided proportional to the sludge level for SCADA input.
The Air Purge Xducer automatically cleans the face of the sensor every 15 minutes for maintenance-free operation (No Moving Parts). This purging keeps the signal strength high by removing build-up and debris. Alternative wiper blade cleaning methods inevitably produce mechanical problems and seal leaks, but not with the ECHO Air Purge Xducer!
Successfully operated in:
Technical Specifications: Sludge Hunter and Air Purge Xducer
TECHNOLOGY/ OPERATION
Measuring Principle Underwater ultrasonic sludge level measurement
Measuring Range 2 … 39 ft (0.6 … 12 m)
PERFORMANCE
Accuracy +/- 0.1 ft (0.03 m)
Resolution 0.01 ft (0.003 m)
Response Rate Fully adjustable
Echo Processing Sophisticated algorithms using 32 bit Digital Signal Processing
Power Supply 115/230 VAC (+5/-10% and 50/60 Hz)
OUTPUTS
Analog 1 4-20mA output, 750Ω
Digital 4 SPDT programmable relays, 5A @ 250 VAC
2 user programmable, 1 Purge Control, 1 LOE Radio Telemetry Site specific, ranges up to 2 miles
Communication Standard RS 232, Optional: RS 485
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) -4˚F to +140˚F (-20˚C to +60˚C)
Outdoor Rating (Electronics) NEMA 4X (IP 65), UL Approved Enclosure with UV Protected Clear Lid
DESIGN
Dimensions 11.0 x 8.6 x 6.1 inch (280 x 219 x 156 mm)
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, flame resistant to UL94-5V
Weight Approximate 3 lbs (1.4 kg)
TRANSDUCER SPECIFICATIONS
Standard Cable Length 66 feet (20 m), optional custom lengths
Cable Specification Shielded Coax Cable
Maximum Cable Run 150 ft (50 m)
Temperature Range (Transducer) -40˚F to +200˚F (-40˚C to +95˚C)
Dimensions 2” dia. X 3” length
Mounting 1 inch NPT Male Thread
Material PVC Housing
Beam Angle & Frequency 6˚ total, 1.2 MHz
Cleaning Hose Tail Air Pipe Connector for Air Purge
Cleaning Frequency User-programmable, 1-720 minutes (12 hours)
Weight Approximate 1 lbs (0.5 kg)
WARRANTY
Product Warranty 2 years