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The 499ADO is a membrane covered amperometric sensor that continuously measures dissolved oxygen between 0 and 20 ppm. The primary application is wastewater aeration basins.
Ambient Temperature
32 to 122 °F (0 to 50 °C)
| Transmitter compatibility | For use with Rosemount 1056, 56, 1066, and 5081 transmitters |
| Dimensions | (std integral) 25 ft (7.6 m); (max) 300 ft (91 m) |
| Sensor Specifications | |
| Range | 0 to 20 ppm (mg/L) as O2. For measurements at the ppb level, choose 499ATrDO. |
| Wetted parts | Noryl1, Viton2, EPDM, Teflon3 (TFE), and silicone |
| Cathode | Gold (not normally wetted) |
| Accuracy | ±0.2 ppm at 25 °C (77 °F) |
| Repeatability | ±0.5% of reading at 25 °C (77 °F)) |
| Response time | <20 sec to 90% of final reading (0 to 2 ppm) at 25 °C (77 °F) |
| Pressure | 0 to 65 psig (101 to 549 kPa abs) |
| Temperature | 0 to 50 °C (32 to 122 °F) |
| Process connection | 1 in. MNPT |
| Electrolyte volume | 25 mL (approx.) |
| Electrolyte life | 4 to 6 months (approx.) |
| Cable length (standard integral cable) | 25 ft (7.6 m) |
| Cable length (maximum) | 300 ft (91 m) |
Rosemount™ 499ADO Dissolved Oxygen Sensor