Yokogawa 2-Wire Analyzer FLXA21-D-E-D-AA-C1-NN-A-N-LA-N-NN/U

Yokogawa 2-Wire Analyzer  FLXA21-D-E-D-AA-C1-NN-A-N-LA-N-NN/U 

The model FLXATM21 2-Wire Analyzer, one model of FLEXATM series, offers single or dual sensor measurement. The modular-designed analyzer offers 4 kinds of measurements – pH/ORP (oxidation-reduction potential), contacting conductivity (SC), inductive conductivity (ISC) or dissolved oxygen (DO) – with the respective sensor module.Yokogawa 2-Wire Analyzer  FLXA21-D-E-D-AA-C1-NN-A-N-LA-N-NN/U 

In the FLXA21 Human Machine Interface (HMI), 2-wire type analyzer FLXA21 offers easy touch screen operation and simple menu structure in 12 languages. Menus of display, execution and setting are displayed in a selected language.
The analyzer FLXA21 automatically recognizes the installed sensor module and prepares the necessary menus for right configuration, even for dual sensor measurement.Yokogawa 2-Wire Analyzer  FLXA21-D-E-D-AA-C1-NN-A-N-LA-N-NN/U

The FLXA21 offers the best accuracy in measurement with temperature compensation functionality and calibration functionality. Sensor diagnostics and sensor wellness indication make measurement reliable. Logbook of events and diagnostic data is a useful information source for maintenance.

For hazardous location, the FLXA21 has approvals ofATEX, IECEx, FM, CSA, NEPSI and KOSHA.

Features

Yokogawa 2-Wire Analyzer  FLXA21-D-E-D-AA-C1-NN-A-N-LA-N-NN/U 
• 4 kinds of measurements; pH/ORP, SC, ISC and DO
• Dual sensor measurement on 2-wire type analyzer;
pH/ORP and pH/ORP, SC and SC, and DO and DO
• Calculated data from dual sensor measurement
• Redundant system on dual sensor measurement
• Connection of digital FU20F pH/ORP SENCOM
Sensor
• Easy touch screen operation on 2-wire type analyzer
• Simple HMI menu structure in 12 languages
• Quick setup menu for immediate measurement
• Indication of sensor wellness
• Hazardous location approvals – ATEX, IECEx, FM,
CSA, NEPSI and KOSHA

General Specifications
Yokogawa 2-Wire Analyzer  FLXA21-D-E-D-AA-C1-NN-A-N-LA-N-NN/U 
1. Basic
Measurement Object/Sensor Type
• pH/Oxidation-reduction Potential (pH/ORP) (analog
sensor)
• Conductivity (SC)
• Inductive Conductivity (ISC)
• Dissolved Oxygen (DO)
• pH/Oxidation-reduction Potential (pH/ORP) (digital
sensor)
Note: The available measurement object depends on a
sensor module installed on the analyzer.

Analyzer Structure
Module structure
Composition of Analyzer
One (1) Housing assembly
One (1) or two (2) Sensor modules
Combination of Sensor Module when two
modules are installed
Combinations of two same sensor modules are
available;
pH/ORP and pH/ORP (analog sensor)
SC and SC
DO and DO


2. Measurement
2-1. pH/Oxidation-reduction Potential (pH/ORP)
with analog sensors
Input Specification
Dual high impedance input (≥1012 Ω)
Input Range
pH: -2 to 16 pH
ORP: -1500 to 1500 mV
rH: 0 to 100 rH
Temperature:
Pt1000: -30 to 140 ºC
Pt100: -30 to 140 ºC
6.8k: -30 to 140 ºC
PTC10k: -30 to 140 ºC
NTC 8k55: -10 to 120 ºC
3k Balco: -30 to 140 ºC
PTC500: -30 to 140 ºC
Output Range
pH: min. span 1 pH
max. span 20 pH
ORP: min. span 100 mV
max. span 3000 mV
rH: min. span 2 rH
max. span 100 rH
Temperature: min. span 25 ºC
max. span 170 ºC
Performance (Accuracy)
(The specifications are expressed with simulated inputs.)
pH
Linearity: ±0.01 pH
Repeatability: ±0.01 pH
Accuracy: ±0.01 pH
ORP
Linearity: ±1 mV
Repeatability: ±1 mV
Accuracy: ±1 mV


Temperature
with Pt1000, 6.8k, PTC10k, NTC 8k55, 3k Balco,
PTC500
Linearity: ±0.3 ºC
Repeatability: ±0.1 ºC
Accuracy: ±0.3 ºC
with Pt100
Linearity: ±0.4 ºC
Repeatability: ±0.1 ºC
Accuracy: ±0.4 ºC
2-2. Conductivity (SC)
Input Specification
Two or four electrodes measurement with square
wave excitation, using max 60m (200ft) cable (WU40/
WF10) and cell constants from 0.005 to 50.0 cm-1
Input Range
Conductivity:
min.: 0 µS/cm
max.: 200 mS x (Cell constant)
(over range 2000 mS/cm)
Resistivity:
min.: 0.005 kΩ / (Cell constant)
max.: 1000 MΩ x cm
Temperature:
Pt1000: -20 to 250 ºC
Pt100: -20 to 200 ºC
Ni100: -20 to 200 ºC
NTC 8k55: -10 to 120 ºC
Pb36(JIS NTC 6k): -20 to 120 ºC


Detailed Models:
FLXA21-D-P-D-AA-C1-NN-A-LA-N-NN/U
FLXA21-D-P-D-AB-C5-NN-A-N-LA-N-NN/UM/CD4
FLXA202-D-B-D-AB-C1-NN-A-N-LA-N-NN/U
FLXA202-D-B-D-AB-C5-NN-A-N-LA-N-NN/U
FLXA21-D-P-D-AB-C1-NN-A-N-LA-N-NN
FLXA21-D-P-D-AB-C1-NN-A-N-LA-N-NN/U
FLXA21-D-P-D-AB-C5-NN-A-N-LA-N-NN/U
FLXA21-D-P-D-AB-P1-NN-A-N-LA-N-NN/U
FLXA21-D-P-D-CH-C1-NN-A-N-LA-N-NN/U/SCT
FLXA21-D-P-D-AB-C1-NN-A-N-LA-N-NN/U/SCT
FLXA21-D-P-D-AB-C1-NN-A-N-LA-N-NN/U
FLXA21-D-P-D-AB-C5-NN-A-N-LA-N-NN/U
FLXA21-D-E-D-EA-P1-P1-A-N-LA-N-NN/U/SCT/CD4
FLXA21-D-P-D-AA-C1-NN-A-N-LA-N-NN/U

pH Analyzer

SC