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| AX480, AX488 and AX468 : Single and Dual Input Analyzers for Dissolved Oxygen |
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AX400 Analyzers incorporate the latest technology providing highly reliable, flexible, feature-packed devices that satisfy diverse range of process monitoring and control applications. The complete range encompasses solutions for pH/Redox (ORP), conductivity and dissolved oxygen. AX48x instruments enable continuous measurements of one or two dissolved oxygen points with simultaneous local display and retransmission. AX48x is used with 9408 Series immersion, submersion and self-cleaning floating-ball sensors providing measurements with exceptional accuracy and performance. AX400 Series analyzers are available for either wall-/pipe- or panel-mounting and are rated to IP66/NEMA 4X. High Functionality as Standard All versions are supplied with two, fully-isolated current outputs as standard, that can be assigned to the measured parameter, sample temperature or any appropriate calculated variables. Three programmable relay set points are available which can also be assigned as required. Innovative features such as a power saving display and diagnostic current output option all contribute to low cost of ownership. Plug-and-Produce Expanded Control An advanced function card provides an additional two current outputs and two further alarm relays that can be assigned to either measured values or sample temperature. ABB Plug-and-Produce software automatically reconfigures the analyzer if an option board is added later. No user programming is necessary. A real-time clock and logbook are also included making the fullfacility versions extremely powerful and versatile. Significantly reduced maintenance costs The AX400 Analyzers are supplied as standard for 85 to 265V AC operation. There are no inner switches to set. They can also be provided for 24V AC, or 12 to 30V DC, supply and recognize automatically which of the two supplies is being used. 24v DC reduces maintenance costs significantly by negating the need for costly, yearly safety tests to ensure compliance with safety procedures. Energy Saving Display The backlit display has been designed to operate in all types of environments and shows both the measured parameter(s) and, on a separate 16-character display line, diagnostic and computed information. On dual-input analyzers both measured parameters are displayed simultaneously. For conservation of energy, the backlight can be set to switch off automatically after 60s of inactivity. Easy Access Installation Terminals Easy access to the terminations ensures rapid and costeffective installation. The wall-/pipe-mount version has been designed to ensure that cable connection is simple and convenient. Ingress protection of the electronics section is retained even when the terminal compartment cover is opened. Cost Savings with Aeration Lane Zone Control Depending on the incoming load to large aeration tanks, the profile of horizontal oxygen can change considerably. Controlling the entire tank based solely on a final measurement can be extremely inefficient. Controlling several sections individually can considerably increase the tank capacity and bring additional savings in energy. The AX488 enables two continuous measurements from a single analyzer with simultaneous local display and retransmission. The AX488 operates as two separate analyzers, thus reducing initial expenditure, saving space and minimizing installation costs when compared to using two individual analyzers. This capability provides on-line validation of the process measurement. Making two simultaneous measurements and configuring one of the set points as a difference alarm provides continuous on-line checking and early warning of malfunction of the measurement. Alternatively, both measurements can be compared and an average value calculated and transmitted via the analog output. In aeration lanes where four individual measurements are made, two AX488s can considerably reduce capital expenditure.
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| AX410, AX411, AX416, AX450 and AX455 : Single and Dual Input Analyzers for Low-level Conductivity |
 
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The AX400 analyzers incorporate the latest technology to provide highly reliable, flexible, feature-packed devices that satisfy a diverse range of process monitoring and control applications. The complete range encompasses solutions for pH/Redox (ORP), conductivity and dissolved oxygen. Models AX41x and AX45x enable continuous measurements of one or two low-level conductivity points with simultaneous local display and retransmission. The analyzers are used with ABB 2-electrode conductivity cells providing measurements with exceptional accuracy and performance. Model AX45x analyzers are dedicated to United States Pharmacopoeia <645>. AX400 Series analyzers are available for either wall-/pipe- or panel-mounting and are rated to IP66 (NEMA4X). High Functionality as Standard All versions are supplied with two fully-isolated current outputs as standard, that can be assigned to the measured parameter, the sample temperature or any appropriate calculated variables. Three programmable relay set points are available that can also be assigned as required. Innovative features such as a power saving display and a diagnostic current output option all contribute to low cost of ownership. Plug-and-Produce Expanded Control An advanced function card provides an additional two current outputs and two further alarm relays that can be assigned to either measured values or sample temperature. ABB Plug-and-Produce software automatically reconfigures the analyzer if an option board is added later. No user programming is necessary. A real-time clock and logbook are also included, making the fullfacility versions extremely powerful and versatile. Significantly Reduced Maintenance Costs The AX400 Analyzers are supplied as standard for 85 to 265V AC operation. There are no inner switches to set. They can also be provided for 24V AC or 12 to 30V DC supply and recognize automatically which of the two supplies is being used. 24V DC operation reduces maintenance costs significantly by negating the need for costly, yearly safety tests to ensure compliance with safety procedures. Energy Saving Display The backlit display has been designed to operate in all types of environments and shows both the measured parameter(s) and, on a separate 16-character display line, diagnostic and computed information. On dual-input analyzers both measured parameters are displayed simultaneously. For conservation of energy, the backlight can be set to switch off automatically after 60s of inactivity. Easy Access Installation Terminals Easy access to the terminations ensures rapid and costeffective installation. The wall-/pipe-mount version has been designed to ensure that cable connection is simple and convenient. Ingress protection of the electronics section is retained even when the terminal compartment is opened. Single and Dual Input Analyzers Both single and dual-input analyzers provide accurate measurement of low-level conductivity and can be configured for ranges in µS cm–1, µS m–1, mS cm–1 and mS m–1. Alternatively, the instrument can be set up for resistivity in MO-cm, total dissolved solids and salinity. In addition, the dual-input analyzer calculates, displays and transmits:
These facilities are invaluable tools for demineralisation and reverse osmosis and a host of industrial processes. Cation Conductivity and Inferred pH Measurement In low conductivity, ammoniated boiler waters, the AX411 analyzer can calculate an inferred pH measurement from the conductivity and a preset ammonia concentration. With this method, one AX411 provides cation conductivity, a direct output of pH, reduced cost and none of the maintenance associated with pH electrodes. Self-monitoring of the validity of the pH measurement is achieved by checking that an after-cation conductivity value is sufficiently low. This measurement is provided by the second input of the AX411 analyzer. Alarm contacts can be configured for cation conductivity, invalid pH and exhausted resin. AX410 Integral P, PI and PID Control The single input AX410 analyzers incorporate three-term PID Control offering three modes of sophisticated control: analog, pulse length (time proportional) and pulse frequency. These are supplied as standard and can be operated in direct- or reverseacting mode, depending upon the application.
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