SX721
Portable pH/ORP Meter
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.
● Double-parameter meter, equipped with three-in-one combination pH electrode and ORP 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
● Meter meets IP57 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 | |
| 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 SX721 pH/ORP meter | 1unit |
| 2. 201T-S plastic pH/ATC three-in-one combined electrode | 1pc |
| 3. 301Pt-s plastic ORP combined electrode | 3pc |
| 4. pH standard buffer solution(pH4.00, pH7.00 and pH10.01/50mL) | 1btl/each |
| 5. 220mV ORP standard solution(50mL) | 1pc |
| 6.Screw driver | 1pc |
| 7. Spare AA batteries | 2pcs |
| 8. Operation manual | 1pc |
| 9. 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 |
Suited for general ORP measurement, 8 pin connector. |
| 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） | |
| 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 |
