ABB AX410, AX411, AX413, AX416, AX418, AX450, AX455 and AX456 Single and dual input analyzers for low level conductivity

Introduction

1.1System Description

The AX410 single input and AX411 dual input conductivity

analyzers have been designed for continuous monitoring and

control of low level conductivity.

The AX450 single input and AX455 dual input conductivity

analyzers have been designed to meet United States

Pharmacopoeia (USP 645) requirements for continuous

monitoring and control of low level conductivity.

They are available in wall-/pipe-mount or panel-mount versions

and can be used with either one or two sensors, each with a

temperature input channel. When used with two sensors,

readings can be compared to produce a range of extrapolated

values.

When making temperature compensated measurements, the

sample temperature is sensed by a resistance thermometer

(Pt100 or Pt1000) mounted in the measuring cell.

Analyzer operation and programming are performed using five

tactile membrane keys on the front panel. Programmed

functions are protected from unauthorized alteration by a

five-digit security code.

1.2PID Control – AX410 and AX450 Analyzers Only

The AX410 and AX450 single input conductivity analyzers

incorporate Proportional Integral Derivative (PID) control as

standard. For a full description of PID control, see Appendix B,

page 78.

1.3AX400 Series Analyzer Options

Table 1.1 shows the range of configurations that are possible for

the AX400 Series analyzers. The analyzer detects the type of

input board fitted for each input automatically and displays only

the operating and programming frames applicable to that input

board type. If no input board is fitted for a second input (Sensor

B), Sensor B frames are not displayed.

Model Analyzer Description Sensor A Sensor B

AX410 Single Input 2-Electrode Conductivity (0 to 10.000 µS/cm) 2-Electrode Conductivity Not Applicable

AX411 Dual Input 2-Electrode Conductivity (0 to 10.000 µS/cm) 2-Electrode Conductivity 2-Electrode Conductivity

AX413 Dual Input 2-Electrode Conductivity and 4-Electrode Conductivity 2-Electrode Conductivity 4-Electrode Conductivity

AX416 Dual Input 2-Electrode Conductivity and pH/Redox(ORP) 2-Electrode Conductivity pH/Redox(ORP)

AX418 Dual Input 2-Electrode Conductivity and Dissolved Oxygen 2-Electrode Conductivity Dissolved Oxygen

AX430 Single Input 4-Electrode Conductivity (0 to 2.000 mS/cm) 4-Electrode Conductivity Not Applicable

AX433 Dual Input 4-Electrode Conductivity (0 to 2.000 mS/cm) 4-Electrode Conductivity 4-Electrode Conductivity

AX436 Dual Input 4-Electrode Conductivity and pH/Redox(ORP) 4-Electrode Conductivity pH/Redox(ORP)

AX438 Dual Input 4-Electrode Conductivity and Dissolved Oxygen 4-Electrode Conductivity Dissolved Oxygen

AX450 Single Input 2-Electrode Conductivity (USP) 2-Electrode Conductivity Not Applicable

AX455 Dual Input 2-Electrode Conductivity (USP) 2-Electrode Conductivity 2-Electrode Conductivity

AX456 Dual Input 2-Electrode Conductivity (USP) and pH/Redox(ORP) 2-Electrode Conductivity pH/Redox(ORP)

AX460 Single Input pH/Redox(ORP) pH/Redox(ORP) Not Applicable

AX466 Dual Input pH/Redox(ORP) pH/Redox(ORP) pH/Redox(ORP)

AX468 Dual Input pH/Redox(ORP) and Dissolved Oxygen pH/Redox(ORP) Dissolved Oxygen

AX480 Single Input Dissolved Oxygen Dissolved Oxygen Not Applicable

AX488 Dual Input Dissolved Oxygen Dissolved Oxygen Dissolved Oxygen

2Operation

2.1Powering Up the Analyzer

1. Ensure the input sensors are connected correctly.

2. Switch on the power supply to the analyzer. A start-up

screen is displayed while internal checks are performed,

then the conductivity measurement readings screen

(Operating Page) is displayed as conductivity measuring

operation starts.

2.2Displays and Controls

The display comprises two rows of 41/2 digit, 7-segment digital

displays, which show the actual values of the measured

parameters and alarm set points, and a 6-character dot matrix

display showing the associated units. The lower display line is a

16-character dot matrix display showing the programming

information.

Measured Values

Conductivity.

Temperature.

Notes.

 The displayed conductivity and temperature readings are the actual measured

values of the sample.

 AX450 analyzers only – if A: Cond.Units is set to USP645 (Section 5.3), the

displayed conductivity reading is the uncompensated conductivity value of the

sample, i.e. its value at the displayed temperature.

Control Mode

Conductivity value.

Control mode.

Use the  and

control.

keys to switch between manual (Manual) and automatic (Auto)

Note. Displayed only if Controller is set to PID – see Section 5.7. page 41.

Control Output

Conductivity value.

Control output (%), manual (Man) or automatic (Auto).

When Control Mode is set to Manual (see above), use the  and

control output between 0 and 100%.

keys to adjust the

Note. Displayed only if Controller is set to PID – see Section 5.7. page 41.

Control Set Point

Conductivity value.

Control set point.

Use the  and

conductivity.

keys to adjust the control set point between 0 and 250%

Note. Displayed only if Controller is set to PID – see Section 5.7. page 41

Temperature Compensated Conductivity Value – AX450 Analyzers Only

Notes.

 This frame is displayed only if A: Cond.Units is set to USP645 – see Section 5.3.

page 21.

 The displayed reading is the temperature compensated conductivity value i.e. the

value it would be at a sample temperature of 25ºC (77ºF).