2800Si Silica Analyzer - Mettler Toledo

Pure water treatment anion exchangemonitoring detects thefirst breakthrough of silica to triggerregeneration before contaminationreaches subsequent treatmentstages.Power steam quality monitoringprotects turbines from silica depositionand resulting imbalance, lossof capacity and efficiency. Silicameasurement and control may alsobe needed to meet turbine manufacturerwarranty requirements.Power condensate polishermonitoring can detect the needfor regeneration at low ppb levelsbefore feedwater is significantlycontaminated.3

Silica Analyzer2800Si Silica AnalyzerReliable OperationOperationIn the analyzer the sample passesthrough an overflow assembly thatassures a fresh up-to-date sampleis always available at the start ofeach measurement cycle. A rinseperiod purges the previous samplefrom the reaction/measurementchamber and fills it with thecurrent sample. The measurementis zeroed. Then, reagentsare metered in and reaction timeallowed to produce a color changeproportional to silica concentration.Where phosphates are present, anadditional reagent is included tominimize its interference.The measurement is made, the displayand outputs are updated andthe cycle repeats. The operator canconfigure the measurement intervalto optimize the tradeoff of responsetime vs. reagent consumption. The2800Si conforms to ASTM TestMethod D7126.The measurement incorporates IntelligentSensor Management capabilitywhich stores identification,calibration and additional sensordata within the sensor. The measuringcircuit is built into the sensorwhich then sends a robust digitalsignal to the readout module.CalibrationThe 2800Si performs a zero calibrationbefore each measurementcycle. An automatic span calibrationis performed at scheduledintervals (monthly is typical) usinga known silica concentration standard.The calibration cycle mayalso be initiated manually.InstallationThe analyzer is provided with a fulldust and drip resistant locking enclosurethat protects the reagentsand measurement componentsfrom the plant environment. .4

Note: Allow 100mm [4in] on left of analyzerfor door opening. Allow 38mm [1.5in] onright for ventilationVisit the competence centerwww.mt.com / pro_power5

Silica Analyzer2800Si Silica AnalyzerProduct SpecificationsMeasurementRangeResolutionLimit of detectionAccuracyMeasurement cycle timeReagent consumptionSample flowrateSample temperatureSample pressureZero calibrationSpan calibrationGrab sample measurement0-5,000 ppb4 digits with decimal, auto-ranging; 0.001 ppb in lowest range0.5 ppb± 5% of reading ±1 ppb, typicalAdjustable, 20 min typicalApprox. 4 L per 3 months with 20 min measurement cycle time200-250 mL/min5-60 °C (41-140 °F)0.3-7 bar (5-100 psig)Automatic, every measurement cycleAutomatic per schedule; once per month, typical1 L capacity6

OutputsAnalog outputAnalog output accuracyAnalog output scalingRelay contactsPowered 0/4-20 mA, 22 mA alarm, 500 ohm max load, not for use withexternally powered circuit±0.05 mALinear, bi-linear, logarithmic (1,2,3,4 decades), auto rangingtwo unpowered, SPDT, 250 VAC/30VDC, 3 A resistive, freely assignable to setpoint for silica; other relays used for measurement and auto-calInstallation/Power/EnclosureOperator interfaceProcess connectionsPower4-line backlit LCD, 5 tactile keys; simultaneous display of silica concentrationand measurement or auto-cal statusSample inlet: 1/4” or 6 mm OD tube SS compression fittingDrain hose: 19 x 25.4 mm (¾ x 1”), 2 m (6 ft) length included100-240 VAC, 50-60 Hz, 25 W; on power loss all settings are retainedwithout batteriesDimensions HWD: Enclosure: 927 x 531 x 305 mm (36.5 x 20.9 x 12”)WeightAmbient operating temperatureHumidityRatings/approvalsSpecifications subject to change42 kg (93 lbs)10-50 °C (50-122 °F)10-90% non-condensingCE and cULus7

2800Si Silica AnalyzerOrdering InformationDescriptionOrder No.2800Si Silica Analyzer 58 043 003Required Startup Kit for 2800Si 58 091 276Includes 3-month supply of dry reagents** and 1 L of 250 ppb silica calibrationstandard solution.Sulfuric acid, 10% w/w, 10 L (used with dry reagents) 58 140 033*Spare Parts and AccessoriesConsumables, 6 months – dry reagents**, pump tubing, air 58 091 250filters, for measuring samples with phosphates. Eight litersof 10% sulfuric acid are also required to complete the reagentcomplement.Consumables, 6 months – dry reagents**, pump tubing, air 58 091 251filters, for measuring samples without phosphates. Eight litersof 10% sulfuric acid are also required to complete the reagentcomplementDry reagents** for samples with phosphates–3 month supply 58 091 252Dry reagents** for samples without phosphates–3 month supply 58 091 253Solution – 1 L of 250 ppb silica calibration verification standard 58 078 020(250 ppb as SiO 2 using sodium silicate)Solution - 1 L of 500 ppb silica calibration/verification standard 58 078 021(500 ppb as SiO 2 using sodium silicate)*Part number available only in the USA. In other countries consult your local METTLER TOLEDO pure wateranalytics representative for local sourcing.** Four liters of 10% sulfuric acid purchased in polymer container and 8 liters of deionized waterare required to mix with dry reagents, sufficient for a 3 month period when operating continuously at 20minutes per measurement.www.mt.com/pro_powerwww.mt.com/thorntonVisit for more informationMETTLER TOLEDO Thornton, Inc.36 Middlesex TurnpikeBedford, MA 01730 USATel +1-781-301-8600Fax. +1-781-301-8701Toll Free +1-800-510-PURE (US & Canada Only)CE CompliantUL ListedMeets Canadian StandardsSubject to technical changes© Mettler-Toledo ThorntonPrinted in USA58 087 002 Rev E 06/2013