Rosemount 499ATrDO Dissolved Oxygen Sensor, High Accuracy Measurement Device

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The Rosemount 499ATrDO sensor is a robust and user-friendly amperometric sensor designed for precise measurement of trace dissolved oxygen levels in steam power plants and high purity cooling water systems.

Measurement Range:Between 0.1 ppb and 20 ppm

Operating Temperature:Up to 122 °F (50 °C)

Accuracy Below 20 ppb:±1.0 ppb

Calibration Time:Accurate within 5 hours after being placed in service

Connector Option:Variopol (VP6) for quick sensor replacement

Membrane Replacement:Simple without special tools needed

Automatic Pressure Equalization:Internal flexible bladder

Temperature Correction:Integral Pt-100 RTD

The Rosemount 499ATrDO Dissolved Oxygen Sensor is built for durability and precision, making it the ideal choice for industries requiring accurate dissolved oxygen measurements. With its amperometric technology, this sensor ensures reliable readings even in challenging environments. Featuring easy in-air calibration, this sensor reaches high accuracy levels within just five hours after installation, making it ready to perform right out of the box. The Variopol (VP6) cable connector option not only prevents cable twisting but also facilitates quick sensor replacement, reducing downtime and maintenance costs.

The sensor measures dissolved oxygen concentrations ranging from 0.1 ppb to 20 ppm with remarkable precision, offering an accuracy of ±1.0 ppb for concentrations below 20 ppb. Its robust design allows operation in process temperatures up to 122 °F (50 °C). Additionally, the internal flexible bladder automatically adjusts for pressure changes, ensuring consistent performance under varying conditions.

Maintaining the sensor is straightforward thanks to simple membrane and electrolyte replacement options, which do not require special tools. The integral Pt-100 resistance temperature device (RTD) provides automatic temperature correction, enhancing overall measurement reliability.

Rosemount 499ATrDO