Manganese removal from drinking water:– measurement of water post-aeration/filtration to monitor removal process/efficiency,– monitoring of manganese residuals in final water to ensure compliance.Measuring Head DetailOpticalGlassMeasurementCellPrecisely-controlledStepper MotorTemperature-controlledInner BodyAssemblyDetectorPistonAssemblyLEDLight SourceLow Range Manganese AnalyzerAztec 600 Manganese Low Range DS/AZT6ML–EN Issue 13Overview of the Aztec 600 Manganese AnalyzerFlexible CommunicationsGraphical Trending of ResultsSimple NavigationSingle- or Multi-stream Options • Integrated side-sample pot for ease of plumbing• Magnetic sample flowswitch alarms when sample is not presentAdvanced Optics • Automatic LED intensity adjustment at every calibration – eliminates drift and compensates for any cell fouling • Temperature-controlled for optical stability • Automatic 2-point calibration• Automatic sample dilution to maximize measurement range• Background sample color compensated forSimplified Fluid Handling• Single piston pump draws in precise volumes of reagents and samples through a valve manifold into the optical measuring cell• Air is used in the chemical sequence for mixing and purging the reagents and sample• Piston movement provides mechanical cleaning the measurement cellEasy-to-use Windows-basedMenu System• Ethernet Connectivity• 6 mA Outputs• 10 Alarm Relays (configurable)• Profibus DP v1.0• SD Memory Card• Process Data TrendsLow Range Manganese AnalyzerAztec 600 Manganese Low Range DS/AZT6ML–EN Issue 14Reliable MeasurementThe Aztec 600 Manganese is an on-line colorimetric analyzer. Ithas been designed for ease-of-use and maintenance simplicity,while offering the benefits of flexible communication andadvanced data acquisition.The Aztec 600 Manganese Low Range analyzer can measureup to 6 samples per hour using the leucomalachite greenreaction chemistry for measuring low concentrations of solublemanganese.A fully-programmable multi-stream option is available, providingup to 3-stream capability with user-programmable streamsequencing.Fluid HandlingA single piston pump provides all the sample and chemical fluidhandling for measurement, mixing and disposal. The pump isstepper motor controlled for repeatability and precision.This 'motorized syringe' approach has the added benefit ofwiping the optical cell on every movement of the piston,resulting in a highly efficient automatic cleaning process.This is particularly important when measuring waters whereoptical contamination can be a real issue without havingstringent automatic cleaning.Measurement TechniqueThe optical cell is rinsed thoroughly with sample beforemeasurement, eliminating dead zones and enablingmulti-stream measurement across different samples withoutcross contamination.To correct for any natural coloration of the sample, thebackground absorbance of the sample is measured prior to theaddition of any color-forming reagents to provide a sampleblank.Reagents are then added and mixed to produce a coloredsolution that can be measured and converted to a concentrationvalue.Instead of using a mechanical stirring system, the piston andoptical sensor is utilized further by drawing in air after the sampleand reagents are introduced.

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