Instrument functions:
u        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.
u        It provides many common ion modes such as H+、Ag+、Na+、K+、NH4+、Cl-、F-、NO3-、BF4-、CN- ,Cu2+、Pb2+、Ca2+
u       It follows GLP practice and can store 2200 sets of measuring data.
u       It provides zero oxygen and full scale calibration.
u       It provides three measuring modes: continuous measuring, timing measuring and balance measuring mode.
u       It has USB ports. If matched with communication software, it can be connected with PC.
u 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
          Resistivity: 0.00Ω.cm~20.00MΩ.cm
          T D S:0.000 mg/L~
          Salinity: (0.00~8.00)%
          Dissolved oxygen: (0.00~19.99)mg/L
          Dissolved oxygen saturation: (0.0~199.9)%
          Ion concentration:(0~19990),unit: ug/L、mg/L、g/L、mol/L、mmol/L
Temp: (-5.0~135.0)℃
 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: 
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: ±
4、Input impedance>3×1012Ω
5、Dissolved oxygen response time<=45s(90% respond at 
6、Automatic temperature compensation range:
pH:(0.0~100.0)℃
     Conductivity:(0.0~100.0)℃
         Dissolved oxygen: (0.0~40.0)℃
   7、Power: 4 alkaline batteries of model 5
   8、Dimension(mm):210×100×45
   9、Weight: 
10、Case outside serial No: WXS-A006-1
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                     Model specifications  | 
            
             DZS-718  | 
            
             DZS-718-A  | 
            
             DZS-718-B  | 
            
             DZS-718-C  | 
        |
| 
             parameters  | 
            
             conductivity, dissolved oxygen, pH/pX,temperature  | 
            
             Conductivity pH/pX, temperature  | 
            
             pH/pX, dissolved oxygen, temperature  | 
            
             Conductivity, dissolved oxygen, temperarure  | 
        |