General Introduction
Yokogawa FLXA21 pH analyzer is a 2 wire modular-designed converter which accepts single or dual sensor measurement, which is applicable for 4
kinds of measurements : pH/ORP (oxidation-reduction potential), contacting conductivity (SC), inductive conductivity (ISC) or dissolved oxygen (DO) with the respective sensor module. For dual sensor measurement, the combination of two same type sensor inputs: pH/ORP and pH/ORP (analog sensor only), SC and SC, and DO and DO are available with two sensor modules. Dual sensor measurement offers additional functionalities; calculated data function and redundant system. Addition to conventional analog pH/ORP sensors, the analyzer FLXA202 can be connected to Yokogawa's digital sensor, FU20F Digital pH/ORP SENCOMTM Sensor. FLXA21 automatically recognizes the installed sensor module and prepares the necessary menus for right configuration, even for dual sensor measurement.
2.Dual Sensor Configuration
3.Model Selection
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Main Code
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Suffix Codes
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Description
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FLXA21
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2-Wire Analyzer
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Power Supply
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-D
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Always -D
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Housing
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-P
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Plastic
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Display
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-D
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Anti-glare LCD
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Type
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-AB
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General purpose for CE, RCM
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-AD
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General purpose for CSA
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-AG
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General purpose for KC
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-AQ
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General purpose for EAC with PA
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-AR
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General purpose for EAC
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-CB
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IS for ATEX, IEC Ex
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-CD
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IS for FM, CSA
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-CH
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IS for NEPSI
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-EG
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IS for KOSHA
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-EQ
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IS for EACEx with PA
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-ER
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IS for EACEx
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-DD
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NI for FM, CSA
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1st input
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-P1
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pH/ORP
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-C1
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Conductivity (SC)
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-C5
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Inductive conductivity (ISC)
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-D1
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Dissolved oxygen (DO)
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-S1
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pH/ORP (SENCOM sensor)
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2nd input
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-NN
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Without input
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-P1
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pH/ORP
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-C1
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Conductivity (SC)
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-D1
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Dissolved oxygen (DO)
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Output
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-A
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4-20mA + HART
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—
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-N
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Always -N
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Language set
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-LA
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English and 11 languages
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Country
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-N
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Global except Japan
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-J
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Japan
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—
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-NN
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Always -NN
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Options
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Mounting hardware
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/UM
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Universal mounting kit
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/U
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Pipe and wall mounting hardware
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/PM
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Panel mounting hardware
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Hood
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/H6
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Hood, stainless steel
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/H7
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Hood, stainless steel + urethane coating
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/H8
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Hood, stainless steel + epoxy coating
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Tag plate
Conduit adapter
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/SCT
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Stainless steel tag plate
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/CB4
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Conduit adapter (G1/2 x 4pcs)
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/CD4
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Conduit adapter (1/2NPT x 4pcs)
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/CF4
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Conduit adapter (M20 x 1.5 x 4pcs)
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4.External Dimensions
