Product Details

The perfect combination of advanced electronical technology, electrode technology and software design. Measurement of parameters with high precision such as pH, ORP, conductivity, TDS, salinity, resistivity, dissolved oxygen and temperature of water solution. The most cost effective portable water analytical instrument.

Introduction

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.

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

Automatic identification of 13 pH standard calibration 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.

Specifications

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 SX751 pH/ORP/Conductivity/DO meter	1unit
2. 201T-S plastic pH/ATC three-in-one combination electrode	1pc
3. 301Pt-S plastic ORP combination electrode	1pc
4. 2301-S plastic conductivity electrode	1pcs
5. DO500 DO electrode	1pc
6. pH standard buffer solution(pH4.00, pH7.00 and pH10.01/50mL)	1btl/each
7. 1413μS/cm conductivity standard solution (50mL)	1bottle
8. DO503 membrane cap (DO electrode use)	1bottle
9.DO502 DO electrode inner solution (30mL)	2pcs
10. Cathode polishing paper	1pcs
11. Screw driver	1pcs
12. Spare AA batteries	2pcs
13. Operation manual	1pcs
14. Carrying case	1pcs

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.
Portable case	Big portable case(360×270×76)mm	Match multi- electrode