The Sludge Finder 2 provides reliable and continuous sludge blanket level measurement. The two-part system has been purposely designed for sludge blanket level measurement, operating ultrasonically through a liquid. The Sludge Finder 2 uses proven echo processing algorithms to identify the sludge interface level using state-of-the-art technology only found in this unit.
Why Measure Sludge Level?
Sludge blanket level control is a crucial aspect of any process that includes primary settlement tanks, secondary settlement tanks, and tertiary settlement tanks with either stationary or traveling bridges, clarifiers, gravity thickeners, or sequencing batch reactor systems. Sludge blanket level measurement works by measuring the distance between the sludge blanket surface and the water level. Once the sludge has reached the required density, the accompanying controller will then switch on the pumps and pump the sludge through into digesters, ready for the next treatment stage.
Effective sludge blanket level measurement can help treatment plants for industrial processes to generate their own electricity, ensure that pumps are being used efficiently, make sure that excess sludge is not being pumped into our local water sources, aid with compliance to health, safety, and environmental regulations, and finally ensures that further sludge handling processes such as thickeners and dewatering equipment are all performing to their maximum with the correct concentration of sludge.
The Sludge Finder 2
Sludge Finder 2 is designed to be maintenance-free. Sludge Finder’s Viper transducer is a single beam ultrasonic unit immersed just below the liquid surface. A wiper blade sweeps the transducer face, ensuring that it remains clean. Additionally, the Sludge Finder 2 features 4-20mA outputs for each channel, with an optional RS485 connection using Modbus or Profibus communications. Six control relays are included and are assignable to any channel. An optional Radio Telemetry System may be fitted with a 500 m (1,640 ft) line of sight range.
The Sludge Finder 2 will operate with one or two transducers. You can mix and match Sludge Transducers and Pulsar Measurement’s main dB Ultrasonic Transducer range to give astonishing versatility.
For more information on the two-part Sludge Finder 2 and Viper transducer system, visit the Download section to find all the product information and case studies.
- Continuous single or dual-channel level control
- High-frequency gives high-reliability long term
- Self-cleaning transducer removes the need for regular inspection
- SBR tank applications can be monitored
- Easy set-up via the drop-down menu on large clear display
- Can provide high floc indication plus standard sludge level with a single transducer and controller
- Radio telemetry system - optional
| General Specifications | |
|---|---|
| Spec: | Description: |
| Weight | 1 kg (2.2 lbs) |
| Cable entry details | 10 cable entry knockouts, 5 x M20, and 1 x M16 underside. 4 x PG11 at rear |
| Operating Temperature (Electronics) | -20 °C to +50 °C (-4 °F to +122 °F) |
| Analog output |
2 x isolated (to 150 V floating) output of 4-20mA or 0-20mA into 1 kΩ (user-programmable and adjustable) 0.1% resolution |
| Digital output | Half-duplex RS232 |
| Display | 192 x 128 pixel illuminated graphical display showing a variety of screens including echo profile. Fully programmable display options, integral keypad with menu navigation keys |
| PC Software | Sludge Finder PC within PC Software Suite - compatible with XP (service pack 3), Windows 7/8/10 |
| Fuse | 2 A slow blow |
| Operating Voltage | Universal 100-240 V AC 50/60 Hz, 22-28 V DC |
| Power Consumption | 20 W maximum power (typically 11 W) |
| Viper Sensor Specifications | |
|---|---|
| Spec: | Description: |
| Sensor body dimensions | 78 mm x 195 mm (3.07 in x 7.67 in) |
| Sensor body weight | Nominal 1.5 kg (3.3 lbs) |
| Sensor body material | Valox 357 Wiper blade - Stainless steel |
| Transducer cable extensions | 4-core screened |
| Maximum separation | 200 m (656 ft)Â |
| Enclosure protection | IP68 |
| Accuracy | 0.25% of the measured range or 10 mm (0.39 in); whichever is greater |
| Resolution | 0.25% of the measured range or 10 mm (0.39 in); whichever is greater |
| Max range | 10 m (32.8 ft)Â |
| Min range | 0.3 m (0.98 ft)Â |
| Minimum sludge density | 0.5% concentration |
| Options | |
|---|---|
| Option: | Description: |
| Communications | Modbus Profibus communications option V1 DX80 radio transmitter |
| Cable | Various cable lengths available |
| Mounting | Sludge Finder 2 Cabinet Mounting Kits & Brackets available |
| Product Brochure | Download |
| Datasheet | Download |
| Datasheet | Download |
| Datasheet | Download |
| Installation & Instruction Manual | Download |
| Installation & Instruction Manual - UL | Download |
| Engineering Specifications | Download |
| Technical Drawing (UNCONTROLLED COPIES) | |
| UltraLog Software Manual | Download |
| Case Study | Finding Reliable Sludge Levels in Secondary Treatment in New Brunswick, Canada. | Download |
| Case Study | A safe and reliable solution for Wastewater Treatment | Download |
| Case Study | Sludge level measurement in high-efficiency sedimentation tank. | Download |
| Case Study | Settled sludge is accurately measured for the city of Mirabel, Quebec's wastewater treatment plant. | Download |
| Case Study | SF2 provides automation for wastewater clarifiers in pig farming application in Asia. | Download |
| Case Study | Accurate Sludge Blanket Level Measurement for Wastewater Treatment Plant in Asia. | Download |
| Case Study | Sludge Finder 2 aids Thames Water UK with compliance and operational improvements. | Download |
| Case Study | Sludge Finder 2 helps wastewater treatment plant generate electricity. | Download |
| Case Study | Sludge Finder 2 provides optimum sludge thickness. | Download |
| Ask the Expert | Marc Richards on PC Suite | Download |
| Ask the Expert | Craig Hutchinson on Sludge Finder 2 | Download |
| Pulsar Measurement Product Warranty | Download |
- CE ApprovalÂ
- For installation in non-flammable area only.
- ST10 transducer is suitable for flammable atmospheres.
- See sensor / transducer datasheet or brochure.
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