ABB AX410, AX411, AX416, AX450 and AX455 Single and dual input analyzers

AX410. AX411. AX416. AX450 and AX455

Single and dual input analyzers

for low level conductivity

The AX400 series

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 IP65.

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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

full-facility versions extremely powerful and versatile.

Significantly reduced

maintenance costs

The AX400 analyzers are supplied as standard for 85 to

265 V AC operation. There are no inner switches to set.

They can also be provided for 24 V AC or 12 to 30 V DC supply

and recognize automatically which of the two supplies is

being used. 24 V 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 60 s of inactivity.

Easy access installation terminals

Easy access to the terminations ensures rapid and cost

effective 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

MW-cm, total dissolved solids and salinity.

In addition, the dual-input analyzer calculates, displays and

transmits:

• Ratio of cell 1 / cell 2

• Difference cell 1 – cell 2

• % Passage (cell 1 / cell 2) x 100

• % Rejection (1 – [cell 1 / cell 2]) x 100

• Inferred pH

These facilities are invaluable tools for demineralization and

reverse osmosis and a host of industrial processes.

Easy access installation terminals

Easy access to the terminations ensures rapid and cost

effective 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.

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 reverse-acting mode, depending upon the application.

Comprehensive temperature

compensations

AX41x and AX45x conductivity analyzers provide true

temperature compensation for all high-purity water

applications:

• Raw (uncompensated) conductivity– USP<645> water for injection and purified water

• NaCl– General monitoring– Mixed-bed exchanger– Final polisher effluent– Cation exchanger inlet– Anion exchanger effluent– Reverse osmosis