Save energy and cut aeration costs with the new optical DO sensor
Aeration systems typically use more than half the electricity consumed in a wastewater treatment facility. So, when operational decisions are based on incorrect dissolved oxygen readings, they can create significant unnecessary electrical energy costs, as well as impacting treatment effectiveness.
The new ADS420 smart optical Dissolved Oxygen (DO) sensor delivers the essential measurements that help you avoid those costs.
Smart, reliable, accurate
DO measurement made easy
Designed to work the way you want to work, the new ADS420 utilizes the latest generation of drift-free optical measurement technology – minimizing operational costs and removing the need for routine calibration.
Compact, robust, and digitally enabled it features ABB’s EZLink™ technology, allowing for more efficient measurement and simpler deployment.
EPA compliant technology
Using reliable and proven optical dissolved oxygen method which meets EPA approval.
No need for routine calibration
The digital SmartCap is preloaded with calibration coefficients - simply snap on and start measuring.
Simplified measurement
Access essential sensor data, and support through the EZLink Connect app, for added convenience.
Dependable performance you can rely on
Eliminate manual calibration errors
Each SmartCap is supplied pre-calibrated and contains the factory calibration coefficients, serial number, and other diagnostic and manufacturing information within the membrane cap.
When the SmartCap is connected, this information is automatically uploaded to the sensor with no user calibration required and no special codes to enter. Simply snap on the SmartCap and start measuring.
EZLink makes measurement easy
The ADS420 is designed to be easy to set up and operate. Supplied fully factory-calibrated, it can be operational in minutes with ABB’s EZLink ‘plug and play’ technology.
Using advanced automatic sensor recognition and set-up, EZLink technology enables the ADS420 to quickly match with our digital transmitters, with no wiring, additional set-up, or fine-tuning required. Once operational, all analysis and signal conditioning are performed within the sensor, with the resulting data relayed digitally to the transmitter.
Stable, drift-free measurement
The ADS420 uses the US EPA-approved Rugged Dissolved Oxygen (RDO™)* method. The method uses a membrane embedded with lumiphore molecules. Oxygen molecules in the sample interact with the lumiphore molecules by altering the membranes luminescent state. The shift in light is measured between the membrane and a reference LED to provide an accurate calculation of dissolved oxygen concentration.
* RDO is a trademark of In-Situ.
Fully automated air cleaning
Biological fouling of oxygen membranes can severely affect sensor performance, leading to inaccurate readings and increased energy usage, unless they are regularly cleaned.
In applications where high biofouling is expected, the ADS420 can be used with ABB’s fully user configurable EZClean system. This robust automatic cleaning system periodically releases a powerful jet of air across the membrane surface, removing any biofilm build up.
Improve efficiency through smart real-time data analysis and control
Work the way you want to work, by combing the ADS420 with our latest generation of smart digital transmitters and solutions.
- Measure at multiple locations for enhanced aeration optimization or combine with other parameters for improved regulatory compliance
- Easy access to data with seamless digital integration into DCS, or securely monitor and control remotely via your web browser
- Directly connect to your smart device to access essential sensor information and support whenever and wherever you need it.
Mounting configurations
Versatile, compact design for easy mounting and installation
Floating ball
Ensures a constant submersion depth, with varying water levels.
Submersion
Mount directly onto a pole using the ¾” NPT thread or ABB pole mounting kit.
Chain
Chain mount kit for cost-effective open channel installation.
Inline
Quick disconnect T-piece for inline pipe mounting.
Take control of your aeration process
ABB’s new ADS420 DO sensor helps you to:
- Reduce energy consumption
- Lower your operational costs
- Improve operational efficiency
Work the way you want to work, with the ADS420.
Contact us to find out more