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

• HCl– Cation exchanger outlet– Degassed cation conductivity– Semiconductor rinse and reclaim water

• NH3– Ammonia-treated make-up and boiler feed water– Condenser sampling applications– 

Hot well sampling applications– Before-cation column applications– Inferred pH in ammonia-dosed waters

• Ultra Pure Water (UPW) – Temperature effect of pure water only

• Linear– Manual entry of temperature coefficient

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‘Trim’ calibration

All ABB sensors are supplied pre-calibrated to exacting

tolerances. This enables installation without the need for any

further adjustment. The construction is robust and provides

highly stable measurements over the sensor’s lifetime.

The single-point calibration facility enables local adjustment

where on-site validation is required

Combined conductivity and pH

The AX416 version measures conductivity and pH with the

same analyzer. The option board provides the capability to

retransmit pH, conductivity and both sample temperatures.

Five programmable alarms can be assigned to suit the needs

of the application, enabling even the most demanding

requirements to be met

Dual input measurement for

critical duties

The AX400 enables two continuous measurements with

simultaneous local display and retransmission. This capability

provides an 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 an invalid

measurement.

AX41x configurable current outputs

The analyzer’s current outputs are fully galvanically isolated

and configurable as 4 to 20 mA, 0 to 20 mA or 0 to 10 mA. In

addition, AX400 conductivity analyzers offer the user a choice

in how the current output is configured:

• Linear

• 2-decade logarithmic

• 3-decade logarithmic

• Bi-linear with configurable break-point

• User-configurable between 0.1 and 100 % of total span

Bi-linear and logarithmic ranges effectively provide a split

output facility. General monitoring is covered with the lower

range while still supplying excellent discrimination during

high level excursions, such as during an alarm state

AX450 and AX455 USP <645> conductivity

AX450 and AX455 analyzers have been developed specifically

with the guidance of major leading pharmaceutical

manufacturers to produce a system fully compliant to

USP<645>.

The US Pharmacopoeia has replaced the off-line qualitative

test of water impurities, such as chloride, with a composite

in-line Stage 1 Test based on conductivity.

Certification

To conform to USP<645> the accuracies of the instrument

display and the sensor’s cell constant are assured below

specified limits. Each AX450 or AX455 analyzer and model

2278 cell is supplied with a traceable test certificate.

Revalidation facility

ABB provides a revalidation facility for the 2278 conductivity

cell where the cell can be returned periodically for re

certification of the cell constant. This quick turnaround

facility fulfills the stringent certification requirements of

today’s pharmaceutical industry.

Recording USP<645>

Two standard current outputs, or four (optional), enable both

conductivity and temperature to be recorded externally as a

permanent record of compliance

Automatic stage 1 test

Maximum acceptable impurity levels are expressed by

USP<645> as uncompensated conductivity at 5 °C (9 °F)

increments. The Stage 1 test of PW and WFI requires both

parameters to be checked against the set limits.

The Stage 1 conductivity / temperature limits are stored

within the AX45X analyzer and can be activated on a limit

alarm contact. The alarm can be configured to initiate at a

safe working distance from the Stage 1 limit. This enables

assurance of operation to Stage 1 without manual

intervention

Display

Type

Dual 5-digit, 7-segment backlit LCD

Information

16-character, single line dot-matrix

Energy-saving function

Backlit LCD configurable as ON or Auto-Off after 60 s

Logbook*

Electronic record of major process events

and calibration data

Real-time clock*

Records time for logbook and auto-manual functions

Relay outputs – on/off

Number of relays

Three supplied as standard or five

with option board fitted

Number of set points

Three supplied as standard or five

with option board fitted

Set point adjustment

Configurable as normal or failsafe high / low

or diagnostic alert

Hysteresis of reading

Programmable 0 to 5 % in 0.1 % increments

Delay

Programmable 0 to 60 s in 1 s intervals

Relay contacts

Single-pole changeover

Rating 5 A, 115 / 230 V AC, 5 A DC

Insulation

2 kV RMS contacts to earth / ground

Analog outputs

Number of current outputs (fully isolated)

Two supplied as standard or four with option board fitted

Output range

• 0 to 10. 0 to 20 or 4 to 20 mA

• Analog output programmable to any value between

0 and 22 mA to indicate system failure

Accuracy

±0.25 % FSD, ±0.5 % of reading (whichever is the greater)

Resolution

0.1 % at 10 mA , 0.05 % at 20 mA

Maximum load resistance

750Ω at 20 mA

Configuration

Can be assigned to either measured variable or

either sample temperature

Digital communications

Communications

Profibus DP (with option board fitted)

Control function – AX410 only

Controller type

P, PI, PID (configurable)

Control outputs

Analog

Current output control (0 to 100 %)

Time proportioning cycle time

1.0 to 300.0 s, programmable in increments of 0.1 s

Pulse frequency

1 to 120 pulses per minute, programmable in increments

of 1 pulse per minute

Controller action

Direct or reverse

Proportional band

0.1 to 999.9 %, programmable in increments of 0.1 %

Integral action time (Integral reset)

1 to 7200 s, programmable in increments of 1 s (0 = Off)

Derivative

0.1 to 999.9 s in increments of 0.1 s – only available for

single set point control

Auto / Manual

User-programmable

…Specification

Access to functions

Direct keypad access

• Measurement, maintenance, configuration,

diagnostics or service functions

• Performed without external equipment

or internal jumpers

Sensor cleaning function – AX416 only

Configurable cleaning action relay contact

• Continuous

• Pulse in 1 s on and off times

Frequency

5 minutes to 24 hours, programmable in 15 minute

increments up to 1 hour then in 1 hour increments

for 1 to 24 hours

Duration

15 s to 10 minutes, programmable in 15 s increments up to

1 minute then in 1 minute increments up to 10 minutes

Recovery period

30 s to 5 minutes, programmable in 30 s increments

Mechanical data

Wall- / Pipe-mount versions

• IP65 (not evaluated under UL certification)

• Dimensions 192 mm high x 230 mm wide x 94 mm deep

(7.56 in. high x 9.06 in. wide x 3.7 in. deep)

• Weight 1 kg (2.2 lb.)

Panel-mount versions

• IP65 (front only)

• Dimensions 96 mm x 96 mm x 162 mm deep

(3.78 in. x 3.78 in. x 6.38 in. deep)

• Weight 0.6 kg (1.32 lb.)

Cable entry types

Standard

5 or 7 x M20 cable glands

North American 7 x knockouts suitable

for 1/2 in. Hubble gland

Power supply

Voltage requirements

• 100 to 240 V AC, 50 / 60 Hz (90 V min. to 264 V max. AC)

• 12 to 30 V DC

Power consumption

10 W

Insulation

Mains to earth (line to ground) 2 kV RMS

Environmental data

Operating temperature limits–20 to 55 °C (–4 to 131 °F)

Storage temperature limits–25 to 75 °C (–13 to 167 °F)

Operating humidity limits

Up to 95 %RH non condensing

EMC

Emissions and immunity

Meets requirements of:

• EN61326 (for an industrial environment)

• EN50081-2

• EN50082-2

Approvals, certification and safety

Safety approval

UL

CE mark

Covers EMC & LV Directives

(including latest version EN 61010)

General safety

• EN61010-1

• Overvoltage Class II on inputs and outputs

• Pollution category 2

Languages

Languages configurable:

• English

• French

• German

• Italian

• Spanish