Multifunctional water quality analyzer

Model : 987A2/987A3/987A4

Product Features

Economical design, shared main body, interchangeable electrodes for measuring different parameters
Displays a single measurement parameter and water temperature.
Uses AAA alkaline batteries
Electrode temperature compensation

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Acid-base measurement range: 0~14 pH; 414.12~-414.12 millivolts (mV)
Acid-base accuracy ±0.02pH+2 reading
Acid-base resolution: 0.01
Conductivity measurement range: 30 μS/cm ~ 20 mS/cm (K=1); 500 μS/cm ~ 199 mS/cm (K=10)
Conductivity accuracy ±199.71 (K=1);±1985.01 (K=10)
Conductivity resolution：0~199.9uS/cm(0.1), 0~1999uS/cm(1), 0~19.99mS/cm(0.01), 0~199.9mS/cm(0.1)
Redox Measurement Range-1999 millivolts to +1999 millivolts
Redox accuracy:±0.2 mV (-199.9 to +199.9 mV), others±2 millivolts
Redox resolution0.1 millivolts (-199.9 to +199.9 millivolts)Other 1 millivolts
Dissolved oxygen measurement range: 0~199.9% (saturated); 0.0~20.0 mg/L
Dissolved oxygen accuracy : Reading value within ±2% of the entire range
Dissolved oxygen resolution0.1%, 0.1 mg/L
Water temperature measurement range0~60℃
Water temperature accuracy:±0.5℃
Automatic Temperature Compensation (ATC) function:have
Acid-base sensor typeGlass sphere
Salinity sensor type:graphite
Oxidation-reduction sensor typePlatinum Ring
Dissolved oxygen sensor type: Primary battery type
Electrode wire length1 meter (acidity/alkalinity); 1 meter (salinity)1 meter (redox);3 meters (dissolved oxygen)