1. Performance characteristics

1.1 pH (0～100.0)℃automatic/Manual temperature compensation; conductivity0～50.0)℃automatic/Manual temperature compensation;
1.2 pHAutomatic calibration from 1 to 5 o'clock, conductivity from 1 to 4 o'clock, with calibration guidance and automatic inspection function★；
1.3 Stable display and automatic locking display mode★；
1.4 conform toGLPData management methods, data storage1000Group (manual and automatic storage)★），And it can display and delete stored values;USBCommunication interface;
1.5 pHIn modeCan be usedCH、USAandNISTThree series in total15Calibration with standard buffer solution; Can be used in conductivity modeCH、USATwo series in total8Calibration of standard solution
1.6 high purity waterpHConductivity measurement mode★Add ammonia to pure waterpHMeasurement mode★; Electrode constant selection; Temperature compensation coefficient setting; Selection of reference temperature★; Temperature unit selection（℃and℉）；
1.7 Factory settings can be restored★；
1.8 Equipped with automatic shutdown function and low voltage display;
1.9 8Core waterproof socket, three in onepHElectrode, conductive electrode with temperature compensation★Full range testing of one electrode★Dissolved oxygen electrode with salinity compensation★Configure instrument carrying case; 1.10Equipped with a dedicated electrode calibration kit★Electrode polarization only requires(3～5)minThe electrode adopts a combined diaphragm cap;
1.11 68×53mmLarge screen LCD display with white backlight; There is a time display;
1.12 conform toIP57Dust and splash proof rating;

1.13Dissolved oxygen automatic temperature compensation（0～45）℃; Automatic salinity compensation（0～45）pptManual air pressure compensation（80～105）kPa.

2Standard configuration

2.1 portablepH/conductivity/Dissolved oxygen analyzer host

2.2 pHTriple composite electrode, conductive electrode（K=1，ATC）Anddissolved oxygen electrode(1.5m)(with temperature compensation and salinity compensation)

2.3 pHStandard buffer solution and conductivity correction solution

2.4 Dissolved oxygen electrode diaphragm cap

2.5 Dissolved oxygen electrode solution

2.6 USBCommunication cable

2.7 Communication software CD

2.8 Instrument carrying case

1Main technical parameters

1.1measuring range

pH: (-2.00～19.99)pH

mV：（±1999）mV

conductivity: 0.00μS/cm～200.0mS/cmIt consists of five paragraphs, namely:（0.00～20.00）μS/cm， （20.0～200.0）μS/cm， （200～2000）μS/cm， （2.00～20.00）mS/cm， （20.0～200.0）mS/cm

Electrical resistivity:（0～100）MΩ•cm

TDS：（0～100）g/L

Salinity:（0～100）ppt

dissolved oxygen:（0～20.00）mg/L（ppm）

Dissolved oxygen saturation:（0.0～200.0）%

Temperature:（-10～110）℃

1.2 resolution

pH：0.01/0.1 pH

mV：1 mV

conductivity：0.01/0.1/1μS/cm；0.01/0.1mS/cm

dissolved oxygen:0.01/0.1 mg/L

Dissolved oxygen saturation:0.1/1%

Temperature:0.1℃

1.3 Basic error

pH：±0.01 pH

mV：±0.1%FS

conductivity：±1.0%FS

dissolved oxygen:±0.30mg/L

Temperature: ±0.4℃