Description
Overview   Â
GAOTek Portable Oxygen Meter features a built-in microprocessor for intelligent functions like automatic calibration, temperature compensation, data storage, and more. It’s a double-parameter meter with pH and dissolved oxygen electrodes, automatically identifying the electrode type. It also recognizes 13 pH standard buffer solutions and offers various options. You can even set pH measurement modes for high purity and pure water with ammonia. The dissolved oxygen mode includes temperature, salinity, and manual air pressure compensation. The polarographic-type electrode measures all three parameters simultaneously, with quick polarization in just 3 to 5 minutes. This IP 57 waterproof meter comes with calibration solutions and a portable case for convenience.
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Technical Specifications Â
Measuring range (pH)Â | -2.00 pH to 19.99 pHÂ |
Resolution (pH)Â | 0.1 pH or 0.01 pHÂ |
Accuracy (pH) | Meter: ±0.01 pH; Overall: ±0.02 pH |
Stability (pH) | ±0.01 pH/3 h |
Temp. compensation range (pH) | 32 °F to 212 °F (0 °C to 100 °C) (automatic) |
Measuring range (mV/ORP/EH)Â | -1999 mV to 1999 mVÂ |
Resolution (mV/ORP/EH)Â | 1 mVÂ |
Accuracy (mV/ORP/EH) | Meter: ±0.1% FS, overall: ±15 mV |
Measuring range (DO)Â | 0 mg/L to 40.00 mg/L (ppm) or 0 to 200.0%Â |
Resolution (DO)Â | 0.1 mg/L or 0.01 mg/L (ppm) or 1/10%Â |
Accuracy (DO) | Meter: ±0.10 mg/L, overall: ±0.40 mg/L |
Response time (DO) | ≤30 s (77 °F (25 °C), 90% response) |
Residual current (DO) | ≤0.1 mg/L |
Temp. compensation range (DO) | 32 °F to 113 °F (0 °C to 45 °C) (automatic) |
Salinity compensation range (DO)Â | 0 ppt to 45 ppt (automatic)Â |
Atmospheric pressure compensation range (DO)Â | 66 kPa to 200 kPa (manual)Â |
Automatic calibration (DO) | Air saturated by water; water saturated by air |
Electrode type (DO) | Polarogram type |
Data storage | 200 groups |
Storage content | Series number, measuring value, measuring unit, and temperature |
Power | Two AA batteries (1.5 V x 2) |
Quality and safety certification | ISO9001:2000, CE, and CMC |
Working Condition | Environment temperature |
Environmental humidity | ≤85% |
IP rating | IP 57 Dustproof and waterproof |
Size and weight | 2.56 in x 4.72 in x 1.22 in (65 mm × 120 mm × 31 mm)/0.400 lb. (180 g) |