Rosemount™ RDO Optical Dissolved Oxygen System

Rosemount

Rosemount™ RDO Optical Dissolved Oxygen System

Rosemount

The RDO® sensor and analyzer is intended for the determination of dissolved oxygen in water. It is ideal for use in wastewater aeration basins and ponds. The sensor can be calibrated either against a referee instrument or in water-saturated air. Air calibration is completely automatic.

Specifications

Process Wetted Material
Delrin, ABS, Viton, titanium, polycarbonate/poly(methyl methacrylate) blend
Dimensions
Length 8.0 in (203 mm) diameter 1.9 in (47 mm)
Rating
IP-67 with cap off; IP-68 with cap installed
Process Connection
1-1/4 inch FNPT
Integral Cable Length
32 ft (10 m)
Maximum cable length (quick disconnect cable only)
4000 ft (1219 m)
Pressure
Up to 314 psig (2060 kPa abs)
Temperature
32 to 122°F (0 - 50°C)
Range
0 to 20 ppm (mg/L) or 0 to 200% saturation
Accuracy
±0.1 ppm between 0 and 8 ppm; ±0.2 ppm between 8 and 20 ppm
Resolution
0.01 ppm (mg/L)
Digital Output
Modbus/RS485
Response Time
30 sec to 90% of final value; 37 sec to 95% of final value (at 25°C)
Operating Life of Sensing Cap
2 years from first reading
Safety Directive
73/23/EEC

Features

  • Single or dual input analyzer
  • Oxygen sensor uses the fluorescence quenching method
  • Accurate readings: ±0.1 ppm between 0.0 and 8.0 ppm
  • Low maintenance: sensing cap only requires replacement every two years

Documents & Drawings