Yokogawa FLXA202 2-Wire Dual Channel Transmitter/Analyzer
Product Introduction
The Yokogawa FLXA202 is a modular-designed 2-wire dual channel
transmitter/analyzer, part of the FLEXA™ series, engineered for
continuous online measurements in industrial installations. It
supports single or dual sensor configurations, offering exceptional
flexibility to adapt to diverse process needs—eliminating the need
for multiple analyzers and optimizing operational expenses (OPEX).
With the ability to swap internal measurement modules on-site, it
seamlessly handles four key measurements: pH/ORP, Contacting
Conductivity (SC), Inductive Conductivity (ISC), and Dissolved
Oxygen (DO). Housed in a robust aluminum die-cast enclosure with an
IP66 rating, it combines durability with user-friendly operation
via a clear touch panel display, making it ideal for critical
industrial processes requiring reliable, real-time analysis.
Key Features
Dual Sensor Support: Accommodates up to two sensors (same
parameter: e.g., pH/ORP + pH/ORP, SC + SC), enabling
interruption-free measurement during maintenance. Dual sensors can
function as a redundant system or generate calculated data from
both parameters, enhancing process reliability.
Multi-Parameter Versatility: A single analyzer supports pH/ORP,
Contacting Conductivity (SC), Inductive Conductivity (ISC), and
Dissolved Oxygen (DO) measurements, with sensor modules that can be
swapped to adapt to changing process requirements.
Advanced Diagnostics:
Continuous monitoring of sensor impedance, asymmetric potential,
slope, and electrode condition (contamination, damage, burnout, or
low liquid level).
Online "Sensor Wellness" checks for predictive maintenance,
reducing unplanned downtime.
User-Friendly Interface: Intuitive touch panel display with support
for 12 languages, featuring quick setup menus, real-time sensor
status, and estimated maintenance time—simplifying operation and
improving efficiency.
Modular Design: Scalable with replaceable sensor modules; options
include no display and choice of enclosure materials (plastic or
stainless steel) to suit environmental needs.
2-Wire Efficiency: Loop-powered via 24VDC, reducing wiring
complexity and operational costs while supporting bi-directional
HART digital communication for seamless integration into control
systems.
Robust Construction: Aluminum alloy enclosure with IP66 rating,
ensuring protection against dust and water jets—suitable for harsh
industrial environments.
Conductivity/Resistivity Measurement Specifications
Input: Supports 2 or 4-electrode sensors with square wave
excitation, compatible with cell constants from 0.005 to 50.0 cm⁻¹
and cables up to 60m (WU40/WF10).
Display Range:
Conductivity: 0.01 µS/cm to 2000 mS/cm (max 90% zero suppression).
Resistivity: 0.001 kΩ·cm to 1000 MΩ·cm (max 90% zero suppression).
Temperature: 25–270°C.
Accuracy:
Conductivity: ±0.5% F.S. (2 µS×K cm⁻¹ to 200 mS×K cm⁻¹); ±1% F.S.
(1 µS×K cm⁻¹ to 2 µS×K cm⁻¹).
Resistivity: ±0.5% F.S. (0.005 kΩ/K cm⁻¹ to 0.5 MΩ/K cm⁻¹); ±1%
F.S. (0.5 MΩ/K cm⁻¹ to 1 MΩ/K cm⁻¹).
Temperature: ±0.3°C (with Pt1000, Pb36, Ni100); ±0.4°C (with Pt100,
NTC 8k55).
Temperature Compensation: NaCl table (±1%) and matrix compensation
(±3%) for accurate measurements across varying temperatures.
General Specifications
Warranty: 1 Year.
Customization: OEM, ODM support.
Origin: Japan.
Brand: Yokogawa.
Certification: CE.
Output Signal: Bi-directional HART digital communication.
Power Supply: 2-wire 24VDC loop-powered.
Enclosure Rating: IP66.
Applications
Ideal for industries such as pharmaceuticals (USP <645>
compliance for pure water monitoring), chemicals, power, and
water/wastewater treatment—where precise measurement of pH,
conductivity, or dissolved oxygen is critical for process control
and quality assurance.
