TDS/pH/Ion/ORP/DO Water Quality Tester

Instrumentfunctions:

Ø GDS-708 Water Quality Tester has5.7inchlargetouchscreenandEnglishoperationsystemforeasyuse.

ØItcanmeasurePH,PX,OPR,Ionconcentration,conductivity,resistivity,TDS,salinity,dissolvedoxygen,saturationandtemperatureatthesametime.

ØItprovidemanyionmodessuchasH+,Ag+,Na+,K+,NH4+,Cl-,F-,NO3-,BF4-,CN-,CU2+,Pb2+,Ca2+.Theuserscandefineionmodesbythemselvesifchoosingcorrespondingionsensors.

ØItfollowsGLPpracticeandcanstore2200setsofmeasuringdata.

ØMeasuringdatacanbeviewed,printedanddeleted.Theusercanviewcurrentmeasuringdataandthelastcalibration;

ØItprovideszerooxygenandfullscalecalibration;

ØIthasRS-232andUSBports.Ifmatchedwithspecificdatacollectingsoftware,itcanbeconnectedwithPC.

ØItprovidesthreemeasuringmodes:continuousmeasuring,timingmeasuringandbalancemeasuringmode.

Specifications:

1.Measuringrange:

pH/pX:(-2.000~19.999)pH/pX;

ORP:(-1999.99~1999.99)mV;

Conductivity:0.000uS/cm~199.9mS/cm;

Resistivity:0.00Ω.cm~20.00MΩ.cm

TDS:0.000mg/L~19.99g/L

Salinity:(0.0~8.00)%;

Dissolvedoxygenconcentration:(0.00~19.99)mg/L

Dissolvedoxygensaturation:(0.0~199.9)%;

Ion:(0~19990),unit:ug/L,mg/L,mol/L,mmol/L;

Temperature:(-5.0~135.0)C;

2.Resolution:

pH/pX:0.01,0.001pH;

ORP:0.1/0.01mV;

Conductivity:0.001uS/cm;

Resistivity:0.01Ω.cm;

TDS:0.001mg/L

Salinity:0.1%;

Dissolvedoxygen:0.01mg/L

Dissolvedoxygensaturation:0.1%;

Temperature:0.1C;

3.Accuracy:

pH/pX:+/-0.002pX+/-1bit;

ORP:+/-0.03%FS;

Conductivity:+/-0.5%FS;

Resistivity:+/-0.5%FS;

TDS:+/-0.5%FS;

Salinity:+/-0.1%;

Ionconcentration:+/-0.5%+/-1bit;

Dissolvedoxygen:+/-0.50mg/L

Dissolvedoxygensaturation:+/-10.0%;

Temperature:+/-0.5+/-1digit;

4.Dissolvedoxygenresponsetime<45s(90%respondat20°C);

5.Automatictemperaturerange:

pH:(0.0~100.0)°C;

Conductivity:(0.0~100.0)°C;

Dissolvedoxygen:(0.0~40.0)°C;

6.Power:DC(9VDC,800mA,inside-positiveandoutside-negative);

7.Dimension(mm):250*195*100;

8.Netweight:2kg;

9.Packingsize:370*310*340mm;Grossweight:5kg.

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