Streaming Current Monitors & Detectors – StreamerSense
Streaming Current Monitors and Streaming Current Detectors from Pi use streaming current measurement (similar to Zeta Potential) to maintain proper electrokinetic charge (ionic & colloidal) in coagulation control applications in water treatment. Effectively these coagulation analyzers detect and control the level of residual coagulant. The objective is to keep this residual at a minimum while maintaining desired final water quality and process efficiency. The Streaming Current Monitor can be used as an effective feedback coagulation control tool allowing the operator to optimize the coagulation dose, effectively building a coagulation analyzer.
The coagulation analyzer uses streaming current measurement to maintain proper electrokinetic charge (ionic & colloidal) in the treated water. Effectively, it responds to changes in raw water characteristics (turbidity, color, pH, etc.) and flow rates. This allows the operator, or an automated control device, to make the necessary coagulant feed adjustments in order to continuously maintain the optimum dosage. In some water treatment facilities the water chemistry is such that the coagulation analyzer on its own is insufficient to properly control coagulation and in these applications the coagulation analyzer (streaming current monitor) can be enhanced with UV254 measurement, turbidity measurement and pH measurement to create a multi-sensor coagulation control system.
StreamerSense 3D Model
- Immediate response to process changes in coagulation treatment – coagulation monitor
- Maintain high quality finished water through improved coagulation control – coagulation controller
- Reduce coagulant/polymer costs – coagulant analyzer
- Automate dosing coagulant/polymer dosing using the streaming current monitor – coagulant control
- Ensure coagulation reliability – coagulant analyzer
- Improve operator efficiency – coagulant analyzer
- Improve filter performance and coagulation treatment – coagulation controller
- Monitor your coagulation control process – coagulation monitor
Streaming Current Monitors Standard Features
- Patented sensor design
- Quick replacement probe and piston
- Self-diagnostic sensor
- High-volume flow minimizes sensor fouling
- Removes electronics from harsh environments
- Corrosion-free Nema 4x enclosure (IP65)
- Optional computer interface
- Spare probe cartridge and piston included
- Auxiliary input signals
The Streaming Current Monitor (Streaming Current Analyzer) allows the cost effective control of coagulant.
- Water treatment coagulation control analyzer
- Water treatment coagulation monitor
- SmartTrac PID control
- Sensor maintenance
- Module (S.M.M.)
- Automatic sensor wash and chemical rinse
- Duratrac II sensor (a heavy-duty motor and double flow capacity sensor)
- Data acquisition and web browser access (Ethernet/internet)
The treated water sample flows into the sample cell where it is drawn into the bore during the upstroke of the piston cycle and is expelled from the bore on the piston down stroke. Particles contained in the water are temporarily immobilized on the piston and cylinder surfaces. As the water is moved back and forth by the piston, charges surrounding these particles (+ and -) are moved downstream to the electrodes. This movement of like charges causes an alternating current to be generated, defined as “streaming current.” A signal gain selector, accessed through the menu screen, is used to select the best signal amplification. The signal amplification should be set where a normal change in dosage results in a desired deviation in streaming current (normally 30 units). The displayed streaming current value (SCV) should be considered as a relative reading due to amplification of the primary signal.
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>> Coagulation Control During Periods When Plants Are Unmanned
Document | Type | Size |
---|---|---|
StreamerSense | Brochure | 611kB |
StreamerSense – Pre-Installation Checklist | Technical Note | 488kB |
Coagulation Control Using Streaming Current Monitoring | Technical Note | 842kB |
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