Portable Multi-parameter Water Analyzer Description Instrument functions: * Several parameters can be shown on the same screen. It can simultaneously measure pX/pH, mV, conductivity, TDS, salinity, resistivity, dissolved oxygen, saturation and temperature. * It provides many common ion modes such as H+, Ag+, Na+, K+, NH4+, Cl-, F-, NO3-, BF4-, CN-,Cu2+, Pb2+, Ca2+ (this is optional) * It follows GLP practice and can store 2200 sets of measuring data. * It provides zero oxygen and full scale calibration. * It provides three measuring modes: continuous measuring, timing measuring and balance measuring mode. * It has USB ports. If matched with communication software, it can be connected with PC. * It is small size and low-energy designed. The protection level is IP65 for portable work and field measurement. Specifications: 1. Measuring range: * pH/pX: (-2.000~19.999)pH/pX * O R P: (-1999.99~1999.99)mV * Conductivity: 0.000μS/cm~199.9mS/cm * Dissolved oxygen: (0.00~19.99)mg/L * Dissolved oxygen saturation: (0.0~199.9)% * Temp:(-5.0~135.0) C * Resistivity: 0.00Ω.cm~20.00MΩ.cm * T D S: 0.000 mg/L~100g/L * Salinity: (0.00~8.00)% * Ion concentration:(0~19990), unit:ug/L, mg/L, g/L, mol/L, mmol/L 2. Resolution: * pH/pX: 0.01, 0.001pH * O R P: 0.1/0.01 mV * Conductivity: 0.001μS/cm * Resistivity: 0.01 Ω.cm * T D S: 0.001 mg/L * Salinity: 0.1 % * Dissolved oxygen: 0.01mg/L * Saturation: 0.10% * Temperature:0.1 C 3. Accuracy: * pH/pX: ±0.002pX±1 bit * ORP: ±0.03％FS * Conductivity: ±0.5％FS * Resistivity:: ±0.5％FS * T D S: ± 0.5％FS * Salinity: ±0.1% * Ion concentration:±0.5%±1 digit * Dissolved oxygen: ±0.30mg/L * Dissolved oxygen saturation: ±10.0% * Temp:±0.3 C±1 digit 4. Input impedance>3×1012Ω 5. Dissolved oxygen response time < 45s (90% respond at 20C ) 6. Automatic temperature compensation range: * pH: ( 0.0~100.0) C * Conductivity: (0.0~100.0) C * Dissolved oxygen: (0.0~40.0) C| 7. Power: 4 AA batteries