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SX731 pH MeterSX731 pH Meter

SX731 SANXIN Portable pH/ORP/Conductivity Meter

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SX731 SANXIN เครื่องวัดค่ากรดด่าง / ORP / ความนำไฟฟ้า Portable pH/ORP/Conductivity Meter อุปกรณ์พร้อมใช้งาน
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เครื่องวัดค่ากรดด่าง / ORP / ความนำไฟฟ้า รุ่น SX731

Portable pH / ORP / Conductivity Meter

SX731 SANXIN เครื่องวัดค่าพีเอชMeasurement of parameters such as pH, ORP, conductivity, TDS, salinity, resistivity and temperature of water solution, the most cost effective portable analytical instrument.


● Multi-parameter meter, equipped with pH electrode, ORP electrode and conductivity electrode, automatic identification of electrode by meter.

● Built-in microprocessor chips, intelligent functions such as automatic calibration, automatic temperature compensation, data storage, function set-up, self-diagnose information, automatic power-off and low voltage display.

●Automatic identification of 13 pH standard buffer solutions, three options of standard buffer solutions: Europe and America series, NIST series and China series.

●Able to set pH measurement modes of high purity water and pure water with ammonia.

● Automatic identification of 8 conductivity standard calibration solutions, two options of standard calibration solutions: Europe and America series and China series.

● Adopt advanced conductivity measurement technology, use conductivity electrode of constant K=1, only need one point calibration and meet the measurement precision requirement of 0.5μS/cm ~ 200 mS/cm.

● Ability to switch among conductivity, TDS, salinity and resistivity. Multinomial calculation for TDS and salinity to ensure the conversion precision of the full scale.

● Conductivity measurement mode has the function of non-linear temperature compensation for high purity water.

● Meter meets IP57 rating, equipped with calibration solution and portable case.


Category Product Name Basic features and specifications
PH Measuring range (-2.00 ~ 19.99)pH
Resolution 0.1/0.01 pH
Accuracy Meter:±0.01pH; Overall: ±0.02pH
Input current ≤2×10-12 A
Input impendance ≥1×1012 Ω
Stability ±0.01 pH/3h
Temp. compensation range (0 ~ 100)℃(automatic)
ORP Measuring range (mV/ORP/EH) -1999mV ~ 0 ~ 1999mV
Resolution 1mV
Accuracy Meter:±0.1% FS, Overall: ±15mV
Conductivity Measuring range Conductivity:(0.00~19.99)μS/cm (20.0~199.9)μS/cm (200~1999)μS/cm (2.00~19.99)mS/cm (20.0~199.9)mS/cm TDS: (0 ~ 100)g/L Salinity: (0 ~ 100)ppt Resistivity:(0 ~ 100)MΩ·cm
Resolution 0.01/0.1/1μS/cm 0.01/0.1 mS/cm
Accuracy Meter:±1.0% FS, Overall:±1.5% FS
Temp. compensation range (0 ~ 50)℃(manual)
Electrode constant 0.1 / 1 / 10 cm-1
Benchmark temperature 25℃、20℃ and 18℃
Other Technical Parameters Data storage 200 groups
Storage content Series number, measuring value measuring unit and temperature,
Power Two AA batteries (1.5V x2)
Size and weight meter:(65×120×31)mm/180g;Suitcase: (360×270×76)mm/1.6Kg
Quality and safety certification ISO9001:2000, CE and CMC
Working Condition Environment temperature 5 ~ 35 ℃(0.01grade)
Environmental humidity ≤85%
IP rating IP57 Dustproof and waterproof

Standard Kit Include

1. Model SX731 pH/ORP/Conductivity meter 1set

2. 201T-S plastic pH/ATC three-in-one combined electrode 1pcs

3. 301Pt-S plastic ORP combined electrode 1pcs

4. 2301-S plastic conductivity electrode 1pc

5. pH standard buffer solution (pH4.00, pH7.00 and pH10.01/50mL) 1btl/each

6. 1413μS/cm conductivity standard solution (50mL) 1bottle

7. Screw driver 1pcs

8. Spare AA batteries 2pcs

9. Operation manual 1pcs

10. Carrying case 1unit

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