The Rosemount 499ATrDO Trace Dissolved Oxygen Sensor is designed for measuring trace levels of dissolved oxygen, specifically in applications such as steam power plants and high purity cooling water. This amperometric sensor operates effectively within a concentration range of 0.1 ppb to 20 ppm and maintains high accuracy of ±1.0 ppb for measurements below 20 ppb. The sensor features a rugged construction that allows for easy maintenance, including simple membrane and electrolyte replacement without the need for special tools. It includes an integral Pt100 resistance temperature device for automatic temperature correction and offers fast acclimation, achieving accurate readings at the 1 ppb level within five hours of deployment. The 499ATrDO is compatible with various Rosemount transmitters and can be ordered with different cable lengths or a Variopol connector option for quick sensor replacement. Each unit comes with essential accessories, including replacement membrane assemblies and an electrolyte solution, facilitating immediate use.
The Model 499ATRDO sensor is a membrane-covered amperometric sensor. It is primarily used to measure trace oxygen levels in deaerated boiler feedwater in steam electric power plants.
| Emerson Automation Solutions – Rosemount | |
|---|---|
| Product Category | Dissolved Oxygen Sensors |
| Product Number | Model 499ATrDO |
| Product Name | Trace Dissolved Oxygen Sensor |
| Cell Type | Galvanic |
| Oxygen Range | 1.00E-4 to 20 ppm |
| Accuracy | 5 % FS |
| Mounting | Flow Thru (Pipeline) |
| Maximum Diameter/ Width | 1 inch (25.4 mm) |
