Data Sheet SS/AW400 Issue 3 Residual Chlorine Monitor AW400 Total and Free Residual Chlorine Measurement – add potassium iodide to reagent to convert free chlorine measurement to total chlorine Reagentless Operation – reduced operating costs with reagentless operation at a pH of 7.5 or less Multiple Sensor Input Capability – reduced installation costs for multiple point monitoring operations Self Cleaning Sensor Assembly – prolongs sensor life and maintains accuracy Fast Response Time – instant response to changes of residual chlorine, unlike batch/DPD methods Pressure Regulated Sample Flow – no additional plumbing required to ensure optimum sample delivery rate and pressure For the measurement of Free and Total Residual Chlorine, Chlorine Dioxide or Ozone in water

Residual Chlorine Monitor AW400 SS/AW400 Issue 3 2 Introduction Residual chlorine is one of the most important measurements for the effective monitoring of cooling, potable and industrial water treatment processes. ABB's new AW400 Residual Chlorine Monitoring System incorporates the features our customers need to monitor and control residual chlorine levels accurately and affordably. The design enables users to either connect up to three residual chlorine monitoring sensors to the system or to combine pH, ORP and residual chlorine sensors; thus reducing the cost of each measurement considerably....

Residual Chlorine Monitor AW400 SS/AW400 Issue 3 3 Specification Measurement Range Chlorine, Chlorine Dioxide, Ozone 0 to 20 ppm (mg/l) Measurement Mode Measurement technology Amperometric cell Measurement interval Continuous Measurement Performance Accuracy Unbuffered: 2% or ±0.01 10ppb, whichever is the greater at pH <7.5 Buffered: 2% or ±10ppb, whichever is the greater at Sensitivity 0.001 ppm Minimum Detection Limit 0.005 ppm Drift Zero drift: ±1% over 30 days Max. Span drift: -5% over 30 days Max. Response Time 90% in less than 90 seconds Interferences Samples containing high concentrations...

Residual Chlorine Monitor AW400 SS/AW400 Issue 3 4 Dimensions Mounting Dimensions – AW400 Cell Mounting Dimensions – Reagent Feed Pump

Residual Chlorine Monitor AW400 SS/AW400 Issue 3 5 Mounting Dimensions – Transmitter

Residual Chlorine Monitor AW400 SS/AW400 Issue 3 6 Ordering Information Accessories Residual Chorine Reagent Feeder Assemblies* Reagent Feeder Asembly (Free Chlorine 115V AC) AW401 011 Reagent Feeder Asembly (Free Chlorine 230V AC) AW401 012 Reagent Feeder Asembly (Total Chlorine 115V AC) AW401 013 Reagent Feeder Asembly (Total Chlorine 230V AC) AW401 014 *Comes complete with tubing and reagent bottles Residual Chlorine Monitor AW4 XX/ X X X X Transmitter Type Transmitter Transmitter with PID Control (Channel 1 only) 01 02 Sensor Type Channel 1 Chlorine Cell 1 Sensor Type Channel 2 No second...

Residual Chlorine Monitor AW400 SS/AW400 Issue 3 7 Benefits Summary Total and Free Residual Chlorine Measurement – add potassium iodide to reagent to convert free chlorine measurement to total chlorine Reagentless Operation – reduced operating costs with reagentless operation at a pH of 7.5 or less Multiple Sensor Input Capability – reduced installation costs for multiple point monitoring operations Self Cleaning Sensor Assembly – prolongs sensor life and maintains accuracy Fast Response Time – instant response to changes of residual chlorine, unlike batch/DPD methods Pressure Regulated Sample...

SS/AW400 Issue 3 Residual Chlorine Monitor AW400 ABB has Sales & Customer Support expertise in over 100 countries worldwide www.abb.com The Company’s policy is one of continuous product improvement and the right is reserved to modify the information contained herein without notice. Printed in UK (07.09) © ABB 2009 ABB Limited 8 Hawksworth Southmead Industrial Park Didcot, Oxfordshire OX11 7HR UK Tel: +44 (0)1235 512000 Fax: +44 (0)1235 512020