Features• Proven measuring system based on neutralizationtitration gravimetric analysis• Reducing the reagent consumption to 1/6 comparedto the previous models• Compact, easy-to-operate design, allowing simplerinstallation with minimum space requirements• Enhanced self-diagnostics, including check forreagent shortage General SpecificationsMeasured object: M alkalinity of clean or raw water(CaCO 3equivalent: Equivalence point pH 4.8)Measurement principle: Neutralization titration gravimetricanalysis using glass pH electrodeMeasurement interval: Continuous measurement, fixedperiod (previous value held).Interval: 10 min. + hold time (arbitrary setting inrange 0.0 to 24 hrs)Measurement ranges:Low range: 0 to 50 mg/lMedium range: 0 to 100 mg/lHigh range: 0 to 200 mg/lOutput ranges: ProgrammableMinimum range: 0 to 50 mg/lMaximum range: Measurement rangeOutput signal:Two outputs (<strong>Alkalinity</strong>, pH)Note: pH output is valid during measurement.4 to 20 mA DC (max. load resistance: 600 )Burnout upscale/downscale selectable in range2.0 to 22.0 mAOutput hold during maintenance: selectable aslast value or fixed valueDisplay: Digital (0.0 to 200.0).Contact output:Output type: concentration high or low limit alarm,auto-cleaning/auto-calibration cycle,in-maintenancestatus signal, instrument fail.Contact operation: On or Off outputContact type: relay contact output (voltage-free contact)Contact rating:Max. open/closed voltage: 100-240 V AC or 24 V DC(resistance load)Max. voltage across load: 264 V AC or 125 V DCMax. current: 2 A, AC or DC (resistance load)Max. power switched: 120 V A or 48 W (resistanceload)Contact status:Contacts Power offPower OnNo alarm AlarmAll Open Open Closed(Note) Same output for power off as for instrument failure.T01E.EPSContact input :contact types : Remote measurement start,remote cleaning start, remote calibration start(only available when specified)Contact type : Voltage-free contactContact operation: ON input resistance; 200 or lessOFF input resistance; 100 k or greaterAuto-clean function:Measurement tank: Water or acid cleaningselectableHead tank/Sand filter: back-flush washAuto-calibration function (optional ):<strong>Alkalinity</strong> span calibration with standard solutionDiagnostic functions:Measurement out of range, pH abnormal(calibration fail), converter abnormal, titrationabnormal, sample solution interrupt, reagent low,calibration solution low.Materials:Converter case; Carbon steel plateDetector case; Stainless steelMeasurement tank; Acrylic resinWetted parts; Polyethylene,polypropylene, PVC,TeflonStanchion; Carbon steel or stainless steel(specified by model/suffix code)Reagent tank: PolyethyleneReagent level detector: PolypropyleneFinish:Converter case; Baked polyurethane resinDetector; Case Baked polyurethane resinStanchion; Baked polyurethane resinColors:Converter case; Munsell 0.6GY3.1/2.0 andMunsell 2.5Y8.4/1.2Detector; Munsell 0.6GY3.1/2.0 andMunsell 2.5Y8.4/1.2Stanchion; Munsell 0.6GY3.1/2.0Ambient temperature: 0 to 40°CAmbient humidity: 5 to 95% RH (non-condensing)Storage temperature: -30 to 70°CInstallation location: Indoors (rainproof shelter required ifmounted outdoors)Mounting: Secured by anchor boltsPiping connection:Water sample, cleaning water: VP16Drain: VP40Air: Rc1/4Sample conditions:Temperature: 0 to 40°C.Flow rate : 1 to 3 l/min or less (approx. 50 gsample water per analysis)Pressure: 20 to 500 kPa2All Rights Reserved. Copyright © 2000, Yokogawa Electric CorporationGS 12G04A01-E1st Edition Feb.26.2001-00
Reagent:Solution: Diluted sulfuric acid (H 2SO 4)Concentrations:Low range: 0.005 mol/lMedium range: 0.01 mol/lHigh range: 0.02 mol/lConsumption: Max. 5 ml per analysisCleaning water:Water quality: Clean water equivalent (chlorinecontainingwater with turbidity 1 mg/1 or less).Temperature: 0 to 50°CPressure: 100 to 500 kPaConsumption: approx. 50 l/dayNote: Reagent is used if acid cleaning is selected bymaintenance panel.Standard solution (for autocalibration):Solution: Potassium bicarbonate (KHCO3)aqueous solution as alkalinity equivalent to 80%of measuring rangeAir purge (using instrument air):Note : Be sure to perform air purge.Supply pressure; 140 kPaAir supply; approx. 5 l/minPower supply: 100, 110, 200 or 220 V AC, 50/60 HzPower consumption: Approx. 150 VA or lessWeight: With sampling equipment; approx. 70 kgCharacteristics:Repeatability; within 2% of full scaleLinearity; within 3% of full scale3 Model and Suffix CodesModel Suffix Code Option Code Specifications<strong>AL400G</strong>ApplicationRangePower supplySampling equipmentAutocalibrationOption-1-2-L-M-H-1-3-5-7-NN-AD-AB-SD-SB-NN-A3/AP/SCT<strong>Alkalinity</strong> <strong>Meter</strong>Clean waterRaw waterLow range (0 to 50 mg/l)Medium range (0 to 100 mg/l)High range (0 to 200 mg/l)200V AC, 50/60 Hz220V AC, 50/60 Hz100V AC, 50/60 Hz110V AC, 50/60 HzAlways -NNIncluded, base mountingIncluded, rear mountingIncluded, base mounting,with stainless steel stanchionIncluded, rear mounting,With stainless steel stanchionWithout autocalibrationWith autocalibrationWith air purge pumpWith stainless tag plateT02E.EPS AccessoriesName Qty DescriptionpH4 buffer solutionpH7 buffer solutionPolyethylene bottleWash bottlePotassium bicarbonateSyringeFittingTube11212112m12 packs, each for 500ml preparation12 packs, each for 500ml preparation500ml for pH standard solution500ml Polyethylene0.8 g20ml3 -way jointPolyethylene tubeT03E.EPSAll Rights Reserved. Copyright © 2000, Yokogawa Electric Corporation GS 12G04A01-E 1st Edition Feb.26.2001-00