Description
Overview
GAOTek pH/mV Conductivity/DO meter is a perfect combination with the most advanced electronic technology, sensor technology and software design. The meter can measure the parameters of pH, mV, conductivity, TDS, salinity, resistivity, DO and temperature for high accuracy water solution. It is the best portable water analysis meter with the highest performance and the lowest cost. It is suitable for the trade such as the mining industry, power plant, water treatment projects and environmental protection, etc., especially has more extensive application in the field and spot test.
Technical Specifications
| pH | |
| Measuring Range | (-2.00 to 19.99) pH |
| Resolution | 0.1 pH or 0.01 pH |
| Accuracy | Meter: ±0.01 pH; Overall: ±0.02 pH |
| Input Current | ≤2 × 10-12 A |
| Input Impedance | ≥1 × 1012 Ω |
| Stability | ±0.01 pH/3h |
| Temp. Compensation Range | 32 °F to 212 °F (0 °C to 100 °C) (automatic) |
| mV | |
| Measuring Range | -1999 mV to 0 mV to 1999 mV |
| Resolution | 1 mV |
| Accuracy |  ±0.1% FS |
| Conductivity | |
| Measuring Range | Conductivity:0.00 μS/cm to 19.99 μS/cm and 20.0 μS/cm to 199.9 μS/cm and 200 μS/cm to1999 μS/cm and 2.00 mS/cm to 19.99 mS/cm and 20.0 mS/cm to 199.9 mS/cm and TDS: 0 g/ to 100 g/L and Salinity:  0 ppt and 100 ppt and Resistivity: 0 MΩ·cm to 100 MΩ·cm |
| Resolution | 0.01 μS/cm or 0.1 μS/cm or 1 μS/cm and 0.01 mS/cm or 0.1 mS/cm |
| Accuracy | Meter: ±1.0% FS and Overall: ±1.5% FS |
| Temp. Compensation Range | 32 °F to 122 °F (0 °C to 50 °C) (automatic) |
| Electrode Constant | 0.1 cm-1 or 1 cm-1 or 10 cm-1 |
| Benchmark Temperature | 77 °F and 68 °F and 64.4 °F (25 °C, 20 °C and 18 °C) |
| Dissolve Oxygen | |
| Measuring Range | 0 mg/L to 40 mg/L (ppm);Â 0% to 200% |
| Resolution | 0.1/0.01 mg/L (ppm); 1/0.1% |
| Accuracy | Meter: ±0.10 mg/L and Overall: ±0.40 mg/L |
| Response Time | ≤30 s (77 °F (25 °C) and 90% response) |
| Residual Current | ≤0.1 mg/L |
| Salinity Compensation Range | 0 ppt to 45 ppt (automatic) |
| Barometric Pressure | 0.66 bar to 2 bar (66 kPa to 200 kPa) (manual) |
| Automatic Calibration | Air saturated by water; water saturated by air |
| Electrode Type | Polarogram type |
| Measuring Range | 0 mg/L (ppm) to 40.00 mg/L (ppm) and 0% to 200.0% |
| Other Technical Parameters | |
| Data Storage | 400 groups |
| Storage Content |  Series number, measuring value measuring unit and temperature, |
| Power | Two AA batteries (1.5 V x2) |
| Working Condition | |
| Environmental Humidity | ≤85% |
| IP Rating | IP 57 Dustproof and waterproof |
| Temp. Compensation Range | 32 °F to 113 °F (0 °C to 45 °C) (automatic) |
| Environment Temperature | 41 °F to 95 °F (5 °C to 35 °C) (0.01 grade) |
| Size | 2.55 in × 4.72 in × 1.22 in (65 mm × 120 mm × 31 mm) |
| Weight | 3.52 lb. (1.6 kg) |