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Emerson Rosemount 499ADO Quick Start Manual page 6

Dissolved oxygen sensor
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Quick Start Guide
Table 1-1: Sensor Specifications (continued)
Physical characteristics
Wetted parts
Cathode
Accuracy
Linearity
Repeatability
Response time
Electrolyte volume
Electrolyte life
Cable length (standard
integral cable)
Cable length (maximum)
Sample flow
Weight/shipping weight
6
Specifications
®
Noryl
, Viton, EPDM, Teflon
Gold (not normally wetted)
±0.2 ppm at 77 °F (25 °C)
2% (typ.)
±0.05 ppm at 77 °F (25 °C)
< 30 sec to 90% of final reading (0 to 2 ppm) at 25 °C (77 °F)
25 mL (approx.)
4 to 6 months (approx.)
25 ft (7.6 m)
300 ft (91 m)
Flow through: 1 to 5 gpm (3.8 to 19 L/min)
Open channel: 1 ft/sec (0.3 m/sec)
Low flow cell: 2 to 5 gph (7.6 to 19 L/hr)
Agitation produced by bubbles in aeration basins usually provides
adequate flow.
0.5 kg / 1.5 kg (1 lb / 3 lb)
®
(TFE), and silicone
Emerson.com/Rosemount
May 2019

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