ABB AX400 Series AX460/AX466 pH/ORP Analyzer User Guide

ABB AX400 Series AX460/AX466 pH/ORP Analyzer User Guide

ABB AX460/AX466 Single and Dual Input pH/Redox Potential Analyzer: A Professional Choice for Industrial Process Analysis

In the fields of industrial process control, water treatment, environmental monitoring, etc., accurate measurement of pH value and oxidation-reduction potential (ORP) is a key link to ensure product quality, process efficiency, and environmental compliance. As a global leader in process automation technology, ABB has launched the AX460 and AX466 series pH/Redox (ORP) analyzers with over a century of experience in instrument design and manufacturing. This user guide aims to provide users with comprehensive information on operation, installation, programming, and maintenance to ensure optimal performance and long-term reliability of the equipment.

Company Background and Quality Commitment

ABB is a world leading company in the design and manufacturing of instruments for industrial process control, flow measurement, gas and liquid analysis, and environmental applications. As a part of ABB Group, we are committed to teamwork, high-quality manufacturing, advanced technology, and unparalleled service and support. The quality, accuracy, and performance of the company's products are based on over 100 years of experience, combined with continuous innovative design and development plans to incorporate the latest technologies.

The NAMAS calibration laboratory (number 0255) is only one of the ten flow calibration devices operated by the company, which fully reflects our dedication to quality and accuracy. The company's quality management system has passed international standard certification, ensuring that every piece of equipment leaving the factory meets strict quality requirements.

Product Overview and System Description

The AX460 (single input) and AX466 (dual input) series pH/Redox (ORP) analyzers are designed for continuous monitoring and control of pH values and redox potentials. These analyzers, together with the accompanying electrode system, form a complete measurement solution.

Core features:

Flexible input configuration:

AX460: Provides single channel pH or ORP input with independent temperature input channel.

AX466: Provides dual channel pH or ORP inputs, each with an independent temperature input channel.

Supports standard pH input (single high impedance input,>10 ¹³ Ω) or differential pH input (dual high impedance input, both>10 ¹³ Ω). Differential input design is used for pH electrode systems equipped with solution grounding rods. By measuring the signals of the measuring electrode and reference electrode separately and comparing them with the solution ground potential, more accurate pH values can be obtained.

Temperature compensation: When conducting temperature compensation measurements, the sample temperature is sensed by a resistance thermometer (Pt100, Pt1000, or Balco 3K) installed in the electrode system to ensure measurement accuracy.

Automatic cleaning function: All models are equipped with cleaning facilities for system cleaning. Alarm 3 relay can be configured to automatically or manually control the cleaning system. Programmable control of continuous or pulse signals to control solenoid valves or pumps powered by external sources. The frequency, duration, and recovery time of the cleaning cycle can be programmed. During the cleaning cycle, the simulated output value remains in its pre cleaning state.

User interface: The operation and programming of the analyzer are completed through five tactile film buttons on the front panel. The programming function is protected by a four digit security code to prevent unauthorized changes.

Automatic detection: The analyzer automatically detects the type of input board installed for each input and only displays the frame applicable to that input board type. If the input board for sensor B is not installed, the sensor B frame will not be displayed.

Operation Guide

1. Power on and startup

Ensure all connections are correct, especially the grounding bolts.

Ensure that the input sensor is properly connected.

Connect the power supply. The startup screen will be displayed, along with an internal check, and then the operation page will be displayed, starting the pH or ORP monitoring operation.

2. Display and Control

The display screen includes two rows of 4 and a half digit 7-segment digital displays, displaying the actual values of measurement parameters and alarm setpoints, as well as a 6-character dot matrix display, displaying relevant units. The next line is a 16 character dot matrix display that displays programming information.

Key functions (see Figure 2.2):

A key: Move between menus

B key: Forward to the next page

C key: Move between parameters

D key: Adjust and store parameter values

E key: Select and store parameter options

3. Operation page

The operation page displays different information based on the model and configuration:

Single input pH: displays pH value, temperature, alarm status, etc.

Dual input pH: displays the pH value, temperature, alarm status, etc. of sensors A and B.

Single/dual input Redox (ORP): displays mV values, temperature, etc.