ABB ADS420 Operating	 Instruction Download Page 1

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ADS420

Dissolved oxygen probe

Optical dissolved oxygen probe

Measurement made easy

Introduction

The ADS420 probe is a rugged, reliable instrument 
designed to deliver accurate dissolved oxygen (DO) 
data across a wide measurement range, using the 
latest optical technology for DO measurement.

The probe is designed for use with ABB multi-input 
transmitters, such as the AWT420 and AWT440, 
which feature 'hot-plugging' capability.   
Hot-plugging lets new or replacement sensors to be 
connected without needing to power down the 
transmitter.  

When used in conjunction with the optional EZClean 
compressed air supply unit (connected to an ABB 
adaptor nozzle or T-piece), a schedule can be 
configured to provide automatic in-situ cleaning of 
the probe.

For more information

Further publications and publications for the 
associated AWT420 and AWT440 transmitters are 
available for free download from:

www.abb.com/measurement

or by scanning this code:

Search for or click on

Data Sheet ADS420

 

Optical dissolved oxygen probe

DS/ADS420-EN

Commissioning Instruction

AWT420

 

Universal 4-wire, dual-input transmitter

CI/AWT420-EN

Operating Instruction

AWT420

 

Universal 4-wire, dual-input transmitter

OI/AWT420-EN

Commissioning Instruction

AWT440

 

Multi-input transmitter

CI/AWT440-EN

Operating Instruction

AWT440

 

Multi-input transmitter

OI/AWT440-EN

CWA sensor accessories  
Parts list

PL/ANAINST/001-EN

ADS420
dissolved oxygen probe

Summary of Contents for ADS420

Page 1: ...ional EZClean compressed air supply unit connected to an ABB adaptor nozzle or T piece a schedule can be configured to provide automatic in situ cleaning of the probe For more information Further publ...

Page 2: ...cable attached 5 ADS420 cable detached 5 3 Calibration 6 Calibrate menu 6 1 Point calibration water saturated air 7 2 Point calibration 100 and 0 saturation 9 Abort calibration 11 Calibration timings...

Page 3: ...appear on this product are shown below Direct current supply only This symbol identifies a risk of chemical harm and indicates that only individuals qualified and trained to work with chemicals shoul...

Page 4: ...ablish and maintain any appropriate measures such as but not limited to the installation of firewalls application of authentication measures encryption of data installation of anti virus programs etc...

Page 5: ...Note The sensor cap serial number is programmed on the memory chip inside the sensor cap D Probe body including temperature sensor E 10 m 39 3 ft fixed cable ADS420 cable detached ADS420 probe compone...

Page 6: ...After calibration and probe replacement reset the currents outputs and alarms see Calibrate menu below Calibrate menu Calibrate Menu Exit Select Used to calibrate the probe Access to the Calibrate me...

Page 7: ...roducing false low readings after calibration If condensation occurs remove the probe thoroughly dry the sensing element probe and thermistor before performing the calibration procedure Ensure the cal...

Page 8: ...displayed Calibrate Start Span Cal Place in 100 Sat Abort Continue 12 Press the key below the Continue prompt The Calibrate page is displayed Calibrate PV 98 26 Tmp 25 22 C Setting Please Wait Abort...

Page 9: ...he probe in the calibration chamber for more than 30 minutes this can allow condensation to form on the surface of the sensing element producing false low readings after calibration If condensation oc...

Page 10: ...Press the key below the Next prompt The Calibrate Start Span Cal page is displayed Calibrate Start Span Cal Place in 100 Sat Abort Continue 12 Press the key below the Continue prompt The Calibrate pag...

Page 11: ...nstructions OI AWT420 EN The Calibration Log displays the message Cal Aborted refer to OI AWT420 EN for Calibration Log entries Calibration timings Stability period The temperature and concentration r...

Page 12: ...re 3 Cleaning the sensor cap Cleaning the optical lens 1 Isolate the transmitter and remove the probe from the process Referring to Figure 4 2 Unscrew shroud A from probe body B 3 Grip sensor cap C be...

Page 13: ...low shows sensor specific icon types diagnostic messages and possible causes suggested remedial action Note The diagnostic icons in the following tables conform to NAMUR 107 For transmitter specific d...

Page 14: ...T4009010 AWT4009050 AWT4009100 AWT4009150 AWT4009250 AWT4009500 1 m 3 3 ft 5 m 16 4 ft 10 m 32 8 ft 15 m 49 2 ft 25 m 82 0 ft 50 m 164 0 ft Sensor cap spare parts Part number Description 3KXA494400L00...

Page 15: ...ADS420 DISSOLVED OX YGEN PROBE OI ADS420 EN REV A 15 Acknowledgements EZLink is a trademark of ABB Limited...

Page 16: ...h regard to purchase orders the agreed particulars shall prevail ABB does not accept any responsibility whatsoever for potential errors or possible lack of information in this document We reserve all...

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