SAMSAN SX-700 Series

SX700 Series of Water-proof Portable Meters



Technical Parameters

Single parameter SX711 Portable pH Meter
SX712 Portable ORP Meter
SX713 Portable Conductivity/TDS/Salinity/Resistivity Meter
SX716 Portable Dissolved Oxygen Meter
Double parameter SX721 Portable pH/ORP Meter
SX723 Portable pH/Conductivity Meter
SX725 Portable pH/Dissolved Oxygen Meter
SX726 Portable Conductivity/Dissolved Oxygen Meter
Multi-parameter SX731 Portable pH/ORP/Conductivity Meter
SX736 Portable pH/Conductivity/Dissolved Oxygen Meter
SX751 Portable pH/ORP/Conductivity/Dissolved Oxygen Meter



Special water-proof connector which four different electrodes (pH, ORP. Conductivity, DO) can be plugged into, ability of the meter to recognize automatically those electrodes.


Advanced pH measurement mode

Automatic calibration, options of three series of pH buffer solution Ability to set two special pH measurement modes of high purity water and ammonia added purity water. 2503DT pure water pH electrode with a built-in temperature probe, applied in pH measurement of high purity water.


IP57 water-proof, applied even under the difficult conditions.


The most advanced conductivity measurement mode

Adopts one common two-ring conductivity electrode(k=1 built-in temperature probe), only one-point calibration, measurement range: 0.54S/cm-200mS/cm, accuracy: less than 1.5%FS. Automatic switches of range, automatic non-linear temperature compensation for high purity water DJS-0.1/T conductivity electrode (k=0.1. built-in temperature probe, with a flow tube assembly). applied for measurement of the high purity water less than 14S/cm. Ability to switch among Conductivity, TDS, Salinity and Resistivity.


Mobile Laboratory

– meter, electrode, standard solution and other accessories are all in a portablecase.


Advanced Dissolved Oxygen measurement mode

DO 500 Dissolved Oxygen electrode can simultaneously measure DO, Conductivity and Temperature to realize automatic salinity compensation for DO measurement. Polarogram type DO electrode with special electrode calibration sets, electrode polarization for only 3 to 5 minutes.


Model SX711 sX712 SX713 SX716 SX721 SX723 SX725 SX726 SX731 SX736 SX751
Measurement Parameters pH ORP Cond. DO pH pH pH Cond. pH pH pH
Temp. Sal. Temp. Cond. DO Sal. Cond. Cond. Cond.
Res. TDS Temp. Res. TDS TDS TDS
Temp. Sal. DO Sal. Sal. Sal.
Res. Temp. Res. Res. Res.
DO Temp. DO DO
Temp. Temp. Temp.
pH v v v v v v v
Range (-2.0  ̴19.99) pH
Accuracy ± 0.1 pH
Automatic Calibration (1  ̴3) point
ATC (0  ̴100)˚C
mV(oRP) v v v v v v v v
Range ± 1999 mV
Accuracy ± 0.1% FS
Conductivity v v v v v v
Range Conductivity: 
(0.00-19.99) μS/cm 
(20.00-199.9) μS/cm 
(200-1999) μS/cm 
(20.0-199.9) mS/cm 
TDS:(0-100) g/L
TDS:(0-100) g/L
Sal.:(0-100) ppt
Res:(0-100) MΩ ·cm
Accuracy ± 1.0% FS
Automatic Calibration 1 point
ATC (0  ̴50)˚ C
Dissolved Oxygen v v v v v
Range (0  ̴40.00) mg/L 
(0  ̴199.9)%
Accuracy ± 1.0% FS
ATC (0  ̴45)˚ C
Automatic Salinity Compensation (0  ̴45) ppt
Manual Air Pressure Compensation (66  ̴200)kPa

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