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SX736

Portable PH&Conductivity&DO Meter

Introduction

● Multi-parameter meter, equipped with pH electrode, conductivity electrode and dissolved oxygen 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.
● Measurement mode of Dissolved oxygen has the function of automatic temperature compensation, automatic salinity compensation and manual air pressure compensation.
● New polarographic type dissolved oxygen electrode can measure temperature, salinity and dissolved oxygen simultaneously, equipped with special dissolved oxygen electode calibration set, polarization only for 3~5 min.
●Meter meets IP57 waterproof rating, equipped with calibration solution and portable case.
 

Specification

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℃
Dissolved Oxygen Measuring range （0 ~ 40.00）mg/L(ppm) （0 ~ 200.0）%
  Resolution 0.1/0.01 mg/L(ppm) 1/0.1 %
  Accuracy Meter:±0.10 mg/L, Overall:±0.40 mg/L
  Response time ≤30 s（25℃, 90%response）
  Residual current ≤0.1 mg/L
  Temp. compensation range （0 ~ 45）℃(automatic)
  Salinity compensation range （0 ~ 45）ppt(automatic)
 

Atmospheric pressure 

compensation range

 （66 ~ 200）kPa (manual)
  Automatic calibration

Air saturated by water; 

water saturated by air
  Electrode type Polarogram type

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 Includes

1. Model SX736 pH/mV/Conductivity/DO meter 1set
2. 201T-S plastic pH/ATC three-in-one combined electrode 1pcs
3. 2301-S plastic conductivity electrode 1pcs
4. DO500 DO 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. DO503 membrane cap (DO electrode use)) 3pc
8. DO502 DO electrode inner solution (30mL) 1bottle
9. Cathode polishing paper 3pcs
10. Screw driver 1pcs
11. Spare AA batteries 2pcs
12. Operation manual 1pcs
13. Carrying case 1unit
 

Optional Accessories

Accessory Category Description Specifications
pH combination electrode

201T-S plastic three-in-one 

pH electrode

Measure pH and temperature 

simultaneously, ATC, suited 

for general pH measurement, 

8 pin conncetor.
  2503DT-S glass three-in-one combintion pH electrode

ATC, suited for pH 

measurement of solution 

under low temperature 

and pure water, 8 pin connector.
  Glass flow cell Match 2503DT-S electrode.

ORP combination 

electrode

301Pt-S Plastic ORP 

combination electrode

 class="tdbg01"

Suited for general ORP 

measurement, 8 pin connector.
Conductivity electrode

2301-S Plastic

conductivity electrode

K=1.0 cm-1，ATC, suited for 

conductivity measurement of 

general water solution, 

8 pin connector.
 

DJS-0.1-S Glass 

conductivity electrode

K=0.1cm-1，ATC, suited for 

pH measurement of of high 

purity water, 8 pin connector.
  Glass flow cell Match DJS-0.1-S electrode.
DO electrode DO500 DO electrode

Polargrafic DO electrode, suited 

for application in lab and field, 

8 pin connector.
DO electrode accessory

DO503 DO electrode 

membrane cap

Combined membrane cap, 

special for DO500 DO 

electrode, specification: 

3 units per group.
 

DO502 DO electrode 

electrolyte

Supplement electrolyte, 

special for DO500 DO 

electrode, specification: 

30mL/bottle.
 

DO501 negative electrode 

polishing paper

Polishing paper，special for 

cleaning negative electrode 

of DO500 DO electrode, 

specification:2 pcs/group.
pH buffer pH4.00 buffer 500mL/250mL/50mL（bottle）
  pH6.86 buffer 500mL/250mL/50mL（bottle）
  pH9.18 buffer 500mL/250mL/50mL（bottle）
  pH7.00 buffer 500mL/250mL/50mL（bottle）
  pH10.01 buffer 500mL/250mL/50mL（bottle）
Conductivity standard 84 μS/cm conductivity standard 500mL/250mL/50mL（bottle）
  1413 μS/cm conductivity standard 500mL/250mL/50mL（bottle）
  12.88 mS/cm conductivity standard 500mL/250mL/50mL（bottle）
  146.6 μS/cm conductivity standard 500mL/250mL/50mL（bottle）
  1408 μS/cm conductivity standard 500mL/250mL/50mL（bottle）
  12.85 mS/cm conductivity standard 500mL/250mL/50mL（bottle）

Electrode soaking 

solution

pH（ORP）combination 

electrode soaking solution

 500mL/250mL/50mL（bottle）
ORP standard solution 222 mV ORP standard solution 250mL/100mL/50mL（bottle）
Portable case Small portable case（255×210×50）mm Match single electrode.
  Big portable case（360×270×76）mm Match multi- electrode