Product Overview

The ​Yokogawa FLXA21​ is a versatile 2-wire, dual-channel liquid analyzer designed for comprehensive process monitoring in industrial applications. Part of Yokogawa's OpreX Analyzers family, this modular analyzer supports multiple measurement parameters including pH/ORP, conductivity, inductive conductivity, and dissolved oxygen. Its dual-channel capability allows for redundant measurements or simultaneous monitoring of two different parameters, providing exceptional flexibility and reliability for process control systems.

Key Features

• ​Dual-Channel Design​ - Simultaneous connection of two detectors for redundancy or multi-parameter measurement

• ​2-Wire Operation​ - Simplified installation and reduced wiring costs

• ​Multi-Parameter Support​ - pH/ORP, conductivity, inductive conductivity, and dissolved oxygen

• ​Advanced Diagnostics​ - Continuous sensor health monitoring and predictive maintenance

• ​Touch Screen Interface​ - Intuitive operation with multi-language support

• ​Modular Architecture​ - Flexible configuration for various applications

• ​HART Communication​ - Digital communication superimposed on 4-20mA signal

• ​Self-Diagnostic Capability​ - Real-time monitoring of sensor impedance, asymmetry, and slope

Technical Specifications

Measurement Capabilities

pH/ORP Measurement

• ​Range: pH: -2 to 16 pH; ORP: -1500 to 1500 mV

• ​Accuracy: ±0.01 pH; ±1 mV for ORP

• ​Temperature Compensation: Built-in with multiple sensor options

• ​Diagnostics: Continuous monitoring of impedance, asymmetry potential, and slope

Conductivity Measurement

• ​Range: 0.01 μS/cm to 2000 mS/cm

• ​Cell Constants: 0.005 to 50.0 cm⁻¹

• ​Accuracy: ±0.5% to ±1% FS depending on range

• ​Temperature Compensation: Five sensor types supported

Inductive Conductivity Measurement

• ​Compatibility: Yokogawa ISC40 series sensors

• ​Range: 0 to 2000 mS/cm at 25°C

• ​Linearity: ±(0.4% FS + 0.3 μS/cm)

• ​Response Time: 90% in 8 seconds

Dissolved Oxygen Measurement

• ​Range: 0 to 50 mg/L (ppm)

• ​Accuracy: ±0.05 ppm or ±0.8% FS

• ​Sensor Types: Galvanic and polarographic sensors supported

• ​Compensation: Atmospheric pressure, salinity, and temperature

Applications

The Yokogawa FLXA21 is ideal for:

• ​Water Treatment​ - pH and conductivity monitoring in purification systems

• ​Chemical Processing​ - Reaction monitoring and quality control

• ​Pharmaceutical​ - USP compliance water quality monitoring

• ​Food & Beverage​ - Process control and quality assurance

• ​Power Generation​ - Boiler feedwater and condensate monitoring

• ​Pulp & Paper​ - Chemical recovery process monitoring

• ​Wastewater Treatment​ - Effluent quality monitoring

Advanced Features

Self-Diagnostic System

• ​Continuous Monitoring​ - Real-time assessment of sensor health

• ​Predictive Maintenance​ - Forecasts maintenance and calibration timing

• ​Calibration History​ - Stores last five calibration results

• ​Fault Detection​ - Identifies electrode contamination, damage, and breakage

User Interface

• ​Touch Screen Operation​ - Easy navigation and parameter setting

• ​Quick Setup Guide​ - Step-by-step configuration assistance

• ​Multiple Display Modes​ - Customizable data presentation

• ​Multi-Language Support​ - 12 languages including English, Chinese, Japanese, and European languages

Safety & Compliance

• ​Explosion Proof​ - ATEX, IECEx, FM, CSA certifications

• ​Industrial Protection​ - IP66/NEMA 4A enclosure rating

• ​Functional Safety​ - Designed for use in hazardous areas

• ​Quality Standards​ - Complies with international industrial standards

System Integration

• ​2-Wire Simplicity​ - Reduced installation cost and space requirements

• ​Digital Communication​ - HART, PROFIBUS PA, and FOUNDATION Fieldbus options

• ​Remote Monitoring​ - Continuous data transmission to control systems

• ​Modular Design​ - Easy expansion and configuration changes

• ​Redundant Configuration​ - Dual-channel capability for critical measurements

Benefits

• ​Reduced Maintenance​ - Predictive diagnostics minimize downtime

• ​Improved Reliability​ - Dual-channel design ensures continuous operation

• ​Cost Efficiency​ - 2-wire design reduces installation and wiring costs

• ​Enhanced Accuracy​ - Advanced compensation algorithms ensure precise measurements

• ​Operational Flexibility​ - Multiple parameter support in single unit

• ​Global Compliance​ - Meets international safety and quality standards

Why Choose Yokogawa FLXA21?

• ​Proven Technology​ - Yokogawa's reputation for analytical instrumentation excellence

• ​Comprehensive Solution​ - Multiple measurement capabilities in one platform

• ​Advanced Diagnostics​ - Predictive maintenance reduces total cost of ownership

• ​Easy Operation​ - Intuitive touch interface simplifies complex measurements

• ​Global Support​ - Backed by Yokogawa's worldwide service network

• ​Future-Proof​ - Modular design allows for system expansion and upgrades