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Rosemount-490A Dissolved Oxygen Sensor

Rosemount™ 490A Dissolved Oxygen Sensor

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Product Description

The Rosemount 490A Optical Dissolved Oxygen Sensor features a low maintenance sensing cap that measures dissolved oxygen using the Environmental Protection Agency (EPA)-approved luminescence-quenching method. The dissolved oxygen sensor is compatible with the Rosemount 1058 Transmitter and ideal for use in wastewater aeration basins and ponds.

Specifications

Operating Temperature
23 to 122 °F (-5 to 50 °C)
Measurement Range
0 - 60mg/L or 0 to 600% saturation
Materials of Construction
Wetted Materials:
Housing, guard: Polyphenylene sulfide (PPS)
Sensor nose: Polycarbonate/acrylonitrile butadiene styrene (PC/ABS) blend
RDO cap: Polycarbonate/polymethylmethacrylate (PC/PPMA) blend
O-rings: Acrylonitrile butadiene rubber (NBR), FKM fluorelastomer
Body: Unfilled acetyl copolymer
Process Connection
1" NPT
Operating Pressure
Up to 150 psi (10.3 bar)

Features

  • Easy automatic air calibration
  • Low maintenance sensing cap only requires replacement every two years
  • Reads accurately within 90 seconds of going from dry to wet conditions
  • Rear facing 1" NPT process connection for easy submersion type installations
  • Dissolved oxygen sensor measures dissolved oxygen using fluorescence quenching method
  • Chemical and abrasion resistant

Documents & Drawings