Portable Dissolved Oxygen Meter, Polarographic
Battery-powered portable dissolved oxygen meter with a polarographic membrane electrode, reading mg/L or percent saturation with manual salinity and pressure correction.
Typical applications
- River, lake and reservoir surveys
- Aquaculture and fish-pond monitoring
- Effluent discharge checks
- Sewage treatment aeration control
- Field water quality work
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Worth knowing before you order
The figure that decides between this and the bench dissolved oxygen meter is accuracy: this portable is specified at ± 0.5 mg/L, the bench model at ± 0.2 mg/L, so a compliance limit near the meter's uncertainty belongs on the bench instrument. The polarographic electrode is a consumable assembly — one membrane cap and one bottle of electrolyte are supplied, and both are re-ordered routinely; a damaged membrane reads low without any obvious symptom. Salinity and barometric pressure are corrected only from values the operator enters by hand, which matters in brackish water and at altitude. Zero-oxygen solution for the two-point calibration is not listed among the accessories.Specification
| Sensor type | Polarographic dissolved oxygen electrode |
|---|---|
| Dissolved oxygen range | 0.00 to 20.00 mg/L (ppm) |
| Dissolved oxygen resolution | 0.01 mg/L (ppm) |
| Dissolved oxygen accuracy | ± 0.5 mg/L (ppm) |
| Saturation range | 0.0 to 200.0% |
| Saturation resolution / accuracy | 0.1% / ± 2.0% |
| Calibration | 1 or 2 points (air-saturated water or zero-oxygen solution) |
| Temperature compensation | 0 to 50 °C / 32 to 122 °F, automatic |
| Pressure correction | 60.0 to 113.3 kPa / 450 to 850 mmHg, manual |
| Salinity correction | 0.0 to 50.0 ppt, manual |
| Display | LCD, backlit |
| Hold function | Manual, or automatic hold at measurement end point |
| Auto power off | 15 minutes if not in use |
| Memory | Up to 100 data readings |
| Connector | 6-pin mini-DIN |
| Communication | USB interface |
| Power supply | 3 x 1.5 V AA batteries or 5 V DC power adapter |
| Battery life | Approximately 150 hours without backlight |
| Carrying case | Standard supply |
| Packing dimensions (L x W x H) | 345 x 85 x 300 mm |
| Gross weight | 1 kg |
Support available
- Calibration
- Operator training
- Spares & consumables
Calibration is arranged through NABL-accredited laboratories under the relevant scope. We state the scope and the certificate number on the quotation — see what accreditation actually covers.
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