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Optical Dissolved Oxygen Sensor ADS420

About Optical Dissolved Oxygen Sensor ADS420

The ADS420 dissolved oxygen (DO) sensor uses optical technology for measuring dissolved oxygen in the most demanding process environments including, high saline applications.

Technical Specifications
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ADS420
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Description
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.

Featuring ABB’s EZLink technology, users of ABB’s DO system benefit from plug-and-play connectivity, automatic sensor recognition / set-up, predictive diagnostics and enhanced measurement accuracy.

 

Easy to use

• plug-and-play digital sensor connection
• automatic sensor recognition and set-up
• advanced predictive maintenance diagnostics
• supplied factory-calibrated ready for use

Accurate and reliable

• dynamic luminescence quenching technology eliminates sensor drift
• fast response time with patented signal processing
• robust construction provides abrasion and UV resistance

US EPA Approved

• US EPA approved technology for use in Clean Water Act programs
• suitable for use by NPDES permit holders for monitoring influent,
effluent and treatment processes

Low cost of ownership

• long-life SmartCap preloaded with factory calibration coefficients
• no need for on-site calibration
• fully automatic air cleaning system available

Flexible installation options

• suitable for tank, open channel or T-piece installation
• range of handrail or wall mounting kits
• suitable for saline applications

 

 

  • Measurement performance (dissolved oxygen) Range

    – 0 to 50 ppm (0 to 50 mg/l)
    – 0 to 450 % saturation at 25 °C and 760 mm Hg

  • Accuracy / maximum measured error

    – ±0.1 ppm (0 to 8 ppm)
    – ±0.2 ppm (8 to 20 ppm)
    – ±10 % of reading (20 to 50 ppm)

  • Resolution

    – 0.01 ppm (mg/l)

  • Response time

    – T90 <45 sec; T95 <60 sec @ 25 °C (77 °F)

  • Measurement performance (temperature) Range

    – 0 to 50 °C (32 to 122 °F)

  • Accuracy

    ±0.1 °C (0.18 °F)

  • Maintenance

    – Sensor cap replacement
    24 months

  • Environmental data

    – Operating temperature range
    0 to 50 °C (32 to 122 °F)
    – Pressure limit
    10.3 bar (150 psi) maximum
    – Flow rate
    None required
    – Storage temperature range
    –5 to 60° C (23 to 140° F)

Features
  • No calibration required
  • No sensor drift
  • Fast speed of response
  • Minimized installation and maintenance time
  • Resistant to abrasion and photobleaching
  • No loss of performance, 2 year sensor cap life
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