Instrument functions:
u       It has 5.7 inch large touch screen and English operation system for easy use.
u       It can measure pH, pX, ORP, ion concentration, conductivity, resistivity, TDS, salinity, dissolved oxygen, saturation and temperature at the same time.
u       It provide many ion modes such as H+、Ag+、Na+、K+、NH4+、Cl-、F-、NO3-、BF4-、CN-
Cu2+、Pb2+、Ca2+  The users can define ion modes by themselves if choosing corresponding ion sensors.
u       It follows GLP practice and can store 2200 sets of measuring data.
u       Measuring data can be viewed, printed and deleted. The user can view current measuring data and the last calibration data.
u       It provides zero oxygen and full scale calibration,.
u       It has RS-232 and USB ports. If matched with specific data collecting software, it can be connected with PC.
u It provides three measuring modes: continuous measuring, timing measuring and balance measuring mode.
Specifications:
1、  Measuring range:
pH/pX: (-2.000~19.999) pH/pX
ORP: (-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: (0.0~8.00)%
Dissolved oxygen concentration: (0.00~19.99)mg/L
Dissolved oxygen saturation: (0.0~199.9)%
Ion: (0~19990),unit: ug/L、mg/L、g/L、mol/L、mmol/L
Temperature:(-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:0.1%
Temperaute:
2、  Accuracy:
pH/pX:±0.002pX±1个字
pH/pX:±0.002pX±1 digit
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:±0.50mg/L
    Dissolved oxygen saturation:±10.0%
   Temperature: ±
4、Input impedance>3×1012Ω
5、Dissolved oxygen response time<=45s(90%respond at 
6、Automatic temperature range:
pH:(0.0~100.0)℃
Conductivity: (0.0~100.0)℃
Dissolved oxygen :(0.0~40.0)℃
7、Power:  DC(9V DC,800mA,inside-positve and outside-negative)
8、Dimension(mm):250×195×100
9、Weight: 
10、Case outside serial No:WXS-A009-1
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                     model specifications  | 
            
             DZS-708  | 
            
             DZS-708-A  | 
            
             DZS-708-B  | 
            
             DZS-708-C  | 
        
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             parameter  | 
            
             Conductivity, dissolved oxygen pH/pX temperature  | 
            
             Conductivity, pH/pX,temperature  | 
            
             pH/pX, dissolved oxygen, temperature      | 
            
             Conductivity, dissolved oxygen, temperature  |