氨氮在线分析仪纳氏试剂法PhotoTek6000NH3NWord文档格式.docx
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电路系统集成设计并且与湿化学组件完全隔离，运行安全、故障率低
测试原理
游离态的氨或铵离子等形式存在的氨氮与纳氏试剂反应生成黄棕色络合物,在430nm测量其吸光度A，根据吸已经存储好的标准曲线计算出样品浓度。
技术参数
测量参数
氨氮
测量方法
纳氏试剂比色法
测量围
0～2mg/L，0～10mg/L；
0～100mg/L，0～800mg/L
清洗调零
自动或手动、用户可设定
维护周期
1个月
重现性
≤±
5%（低量程）
准确度
零点漂移
±
2%F.S
分析模块
可扩展至3通道
仪器校准
自动、用户可编程
通讯接口
RS232/RS485/4-20Ma
功率
200W
安装方式
机柜/壁挂
PhotoTek6000-NH3-N氨氮在线分析仪朗石（气敏电极法）
-
氨氮在线自动监测仪式一款以气敏电极法为监测原理，可以在线连续测定、实时读取、存储和分析，可广泛应用于地表水、饮用水或水源地、以及一般工业污水和城镇污水厂的在线监测。
PhotoTek6500具有一体化电极；
在实际测试中，稳定性好，试剂用量小，维护量小等特点
广泛应用于地表水（河流、湖泊、水库）、饮用水源地、自来水管网等的水质自动连续监测，服务于环保部门、水务部门、大中型企业等。
采用氨气敏电极标准加入法，方便质量控制，即使氨氮含量很低也可实现准确测量；
试剂用量少，维护量小，价格和维护费用低；
正面液路维护，具有自动采样和自清洗功能；
精选中文界面，使用简单，操作方便；
对所监测参数设置核查值，准确核对每一个测量数据，即时了解仪器运行状况，对检测数据的有效性作出判断；
功能可扩展（在仪器增加对进样预处理、排除干扰的配件或预留配件位置），保证仪器可以长期正常稳定地运行；
独立的存储功能，存储数据安全可靠；
数据传输可靠，集成多种传输手段，具备4-20mA（四通道）模拟输出，8个DI数字量输入及RS485/232数据接口,
同时支持MODBUS数据处理方式访问和控制机器；
测量围大，可自动切换量程，拓宽了仪器的适用围，可以用在地表水，饮用水，也可以应用于污染源等在线监测上；
检测原理
氨气敏电极电极是一个置于碱性电极液中的pH电极，水中的氨气分子通过氨半渗透膜进入电极，从而改变电极液的pH值，pH电极检测其变化，所测得的电动势与水样中氨浓度符合能斯特方程。
由此可测得样品电位值，确定水样中的氨氮含量。
氨气敏电极标准加入法
检测周期
10min~30min
0.00~10.0mg/L，10.0~100mg/L，100~1000mg/L
最低检出限
0.03mg/L
重复性误差
3%FS
5%FS
量程漂移
响应时间
＜3min
温度补偿精度
0.1mg/L以
MTBF
≥720h/次
实际水样比对测试
10%
PhotoTek6000-NH3-NAmmonianitrogenon-lineanalyzer-stone（Na'
sreagentmethod）
6000-NH3-NPhotoTekisamicrocomputercontrolledautomaticon-lineanalyzer,whichcanbeappliedtothedetectionofavarietyofwaterqualitysuchaswater,surfacewaterandindustrialwastewater.Thedetectionmethodoftheinstrumentconformstothenationalstandard"
GB7479-97waterquality-Determinationofammoniumnitratereagentcolorimetricmethod"
canbelong-termunattendedoperation.
Typicalapplication
Widelyusedinautomaticandcontinuousmonitoringofrivers,lakes,reservoirs,waterpipenetwork,municipalsewageandindustrialwastewater（suchas:
medicalinstitutions,liquor,non-ferrousmetalsmelting,non-ferrousmetalminingselection,printinganddyeing,chemical,paper,leather,pharmaceutical,rareearth,sugar,farming）.
Productfeatures
TheGB7479-87analysismethodtofollowthenationalstandardandindustrystandardHJ/T101-2003
Thedoubledifferenceofadvancedopticaldesignandadaptivealgorithmoftemperaturemeasurement,theresultsarestableandreliable
Theautomaticdilutiondeviceequippedwithhighprecision,widemeasuringrange,applicabletoalltypesofwater
-eachliquidthroughquantitativepumpandpumpsampling,samplingaccuratematching,withoutcrosscontamination
Theflowsystemhastheadvantagesofsimplestructure,nocomplicatedparts,withouttheuseofspecialtools,convenientmaintenance
Thecompleteisolationcircuitsystemintegrationdesignandwetchemicalcomponents,safeoperation,lowfailurerate
Testprinciple
ThefreestateofammoniaorammoniumionsexistintheformofammonianitrogenandNessler'
sreagentreactiongeneratedyellowbrowncomplexandmeasuringtheabsorbanceat430nm,dependingontheceilinghasagoodstoragestandardcurvetocalculatetheconcentrationofthesample.
Technicalparameters
Measurementparametersofammonianitrogen
Methodofmeasurementofthecolorimetricmethod
Measuringrangeof0~2mg/L,0~10mg/L,0~100mg/L,0~800mg/L
Zeroormanual,usercansetup
Maintenancecycle1months
Reproducibilityislessthan5%（lowrange）
Theaccuracyoflessthan5%（lowrange）
Zerodrift2%F.S
Analysismodulecanbeexpandedto3channels
Automaticinstrumentcalibration,userprogrammable
CommunicationinterfaceRS232/RS485/4-20Ma
Power200W
Installationcabinet/wall
6000-NH3-NPhotoTekammonianitrogenon-lineanalyzer,longstone（gassensitiveelectrodemethod）
Ammonianitrogenon-lineautomaticmonitoringceremonyawiththegassensingelectrodemethodformonitoringprinciplecanbeonlinecontinuousmeasurement,real-timeread,storageandanalysiscanbewidelyusedinsurfacewater,drinkingwaterorwater,andgeneralindustrialwastewaterandurbansewagetreatmentplantofonlinemonitoring.PhotoTek6500hasintegratedelectrode;
inpractice,thestabilityisgood,thereagentconsumptionissmall,themaintenanceissmallandsoon.
Automaticandcontinuousmonitoringofwaterqualityofwidelyusedinsurfacewater（rivers,lakesandreservoirs）,drinkingwatersources,waterpipenetworketc.,servicetotheenvironmentalprotectiondepartments,watercompanies,largeandmedium-sizedenterprises.
Thestandardmethodofammoniagassensingelectrodeisadoptedtofacilitatethequalitycontrol;
Withlessreagentconsumption,lowmaintenance,lowpriceandmaintenancecosts;
Themaintenanceofpositiveliquidpathhasthefunctionofautomaticsamplingandselfcleaning;
SelectionoftheChineseinterface,theuseofsimple,easytooperate;
Tosetuptheverificationvalueofthemonitoringparameters,toaccuratelycheckeverymeasurementdata,tounderstandtheoperationoftheinstrument,andtomakeajudgmentonthevalidityofthetestdata;
Functioncanbeextended（intheinstrumenttoincreasethepre-processing,excludingtheinterferenceofpartsoraccessoriesreservedforthelocation）,toensurethattheinstrumentcanbenormalandstableoperationofthenormal;
Independentstorage,storagedatasafeandreliable;
Reliabledatatransmissionandintegrationofmultipletransmissionmeans,with4-20mA（Quad）analogoutput,8DidigitalinputandRS485/232datainterface,alsosupporttheModbusdataprocessingmethodstoaccessandcontrolthemachine;
Widerangeofmeasurementcanbeautomaticallyswitchingrange,wideningthescopeoftheinstrumentcanbeusedinsurfacewater,drinkingwater,canalsobeappliedtothepollutionsourcesandotheronlinemonitoring;
Detectionprinciple
AmmoniagassensingelectrodeisplacedalkalineelectrodesolutionpHelectrode,theammoniamoleculesinthewaterbyammoniasemipermeablemembraneintotheelectrode,thuschangingtheelectrodesolutionpH,pHelectrodedetectionthechange,themeasuredelectromotiveforceandwaterammoniaconcentrationwiththeNernstequation.Thiscanbemeasuredsamplepotentialvalue,determinethecontentofammonianitrogeninwatersamples.
Standardadditionmethodfordetectionofammoniasensitiveelectrode
Detectionperiod10min~30min
Measurementrangeof10.0~100,mg/L100~1000,mg/L0.00~10.0mg/L
Thelowestdetectionlimitwas0.03mg/L
Repeatabilityerror3%FS
Zerodrift5%FS
Rangedrift5%FS
Responsetimeislessthan3min
Temperaturecompensationprecisionlessthan0.1mg/L
MTBF=720h/
Actualwatersampleratiotest10%
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