Yokogawa FLXA21 Analyzer | 2-Wire pH/ORP, Loop-Powered, Dual Sensor, 4-20mA+HART

Yokogawa FLXA21 Analyzer | 2-Wire pH/ORP, Loop-Powered, Dual Sensor, 4-20mA+HART

Yokogawa FLXA21 specifications. FLXA21-D-P-D-AB-C1-NN-A-N-LA-N-NNIU 2-wire pH/ORP analyzer. Dual input, loop powered, 4-20mA+HART, dual alarm relay.

Product Overview

The Yokogawa FLXA21-D-P-D-AB-C1-NN-A-N-LA-N-NNIU is a versatile, loop-powered, 2-wire liquid analyzer module from the FLXA21 series. This specific configuration is designed for pH and ORP (Redox) measurement applications. It features a dual sensor input, dual alarm relay outputs, and communicates via a 4-20mA analog signal with superimposed HART digital protocol. Its compact, rugged design makes it suitable for direct field mounting in various industrial process environments.

Technical Specifications

Key Features

• 2-Wire Loop Power:​ Simplified installation, powered from the 4-20mA loop

• Dual Sensor Input:​ Accepts two pH or ORP sensors for redundancy or differential measurement

• HART Communication:​ Enables remote configuration, diagnostics, and digital data access

• Dual Alarm Relays:​ Provides two configurable contact outputs for process control or alarms

• Rugged IP66/NEMA 4X Enclosure:​ Suitable for harsh outdoor and washdown environments

• Large Backlit LCD:​ Clear local display of measured value, status, and diagnostics

• Intuitive Operation:​ Simple setup via local interface or configurator software

• Comprehensive Diagnostics:​ Monitors sensor health, calibration status, and process conditions

• Global Certifications:​ Approved for use in hazardous and non-hazardous areas worldwide

Applications

• Continuous pH/ORP monitoring in chemical processing

• Wastewater treatment plant influent/effluent control

• Neutralization processes in industrial effluent

• Cooling water and boiler feedwater treatment

• Food & beverage production processes

• Pharmaceutical process monitoring and control

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About ACH

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Frequently Ask & Questions

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What is the warranty of goods?

One-year Warranty.

How long is the logistics cycle of the product?

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