Skip to product information
1 of 3

Yokogawa FLXA21 | 2-Wire Dual Channel Transmitter/Analyzer

Yokogawa FLXA21 | 2-Wire Dual Channel Transmitter/Analyzer

  • Manufacturer: Yokogawa

  • Product No.: FLXA21

  • Condition:1000 in stock

  • Product Type: 2-Wire Dual Channel Transmitter/Analyzer

  • Product Origin: Japan

  • Payment: T/T, Western Union

  • Weight: 1000g

  • Shipping port: Xiamen

  • Warranty: 12 months

  • 24/7 Support
  • 30-Day Returns
  • Fast Shipping

The Yokogawa FLXA21 is a 2-wire, dual-channel transmitter/analyzer designed for various types of liquid measurements, such as pH, ORP, conductivity, inductive conductivity, and dissolved oxygen. Here's a breakdown of its key features and specifications:

Key Features and Capabilities

  • Dual Channel Measurement: The FLXA21 can accept two sensor modules, each capable of measuring one of the following:
    • pH/ORP
    • Conductivity (SC)
    • Inductive Conductivity (ISC)
    • Dissolved Oxygen (DO)
  • Self-Diagnostics: The system continuously checks for issues like electrode contamination, damage, or low liquid levels, reducing maintenance costs.
  • Wide Input and Output Ranges:
    • pH: -2 to 16 pH
    • ORP: -1500 to 1500 mV
    • Conductivity: 0 µS/cm to 200 mS/cm (depending on cell constant)
    • Dissolved Oxygen: 0 to 50 mg/L (ppm)

Accuracy and Performance

  • pH Accuracy: ±0.01 pH
  • ORP Accuracy: ±1 mV
  • Temperature Accuracy: ±0.3 °C for most sensors
  • Conductivity: ±0.5% F.S. for measurements from 2 µS/cm to 200 mS/cm
  • Dissolved Oxygen: ±0.05 ppm or ±0.8% F.S., whichever is greater

Power Supply and Signal Output

  • Loop Powered: Nominal 24 V DC, supports a wide range (16 to 40V DC for pH/ORP, SC, DO inputs; 17 to 40V DC for ISC)
  • Output: 4-20 mA with HART digital communication
  • Burnout Function: Allows detection of sensor failure or disconnection (e.g., 3.6 mA or 22 mA signals for different conditions)

Display and Interface

  • LCD Touchscreen: Black and white, 213x160 pixels, with adjustable contrast.
  • Multi-Language Support: Supports 12 languages, including English, Japanese, German, and Chinese.

Mechanical and Environmental Specifications

  • Housing: Polycarbonate, IP66, NEMA Type 4X, and CSA Type 3S/4X certified.
  • Mounting: Offers various mounting hardware options, including universal mounting kits, pipe and wall mounts, and panel mounts.
  • Ambient Operating Temperature: -20 to +55°C
  • Storage Temperature: -30 to +70°C
  • Humidity: 10 to 90% RH at 40°C, non-condensing.

Digital Communication

  • HART Protocol: Provides digital communication, enabling advanced diagnostics, configuration, and measurement data output.
  • Calculated Data: The analyzer can also calculate and output data from both sensors (in dual-sensor configurations).

Model Breakdown (Suffix Codes)

The FLXA21's suffix codes define various configuration options such as power supply type, housing material, input types, and language set. Some examples include:

  • Power Supply: Always -D (fixed configuration)
  • Housing: -P (plastic)
  • Inputs: -P1 for pH/ORP, -C1 for Conductivity, etc.
  • Output: -A for 4-20 mA with HART
  • Language Set: -LA for English and 11 additional languages

Optional Add-ons

  • Mounting Hardware: /UM for universal mounting kit, /U for pipe/wall mount, /PM for panel mount.
  • Hood Options: /H6, /H7, /H8 for stainless steel hoods with various coatings.
  • Tag Plate: /SCT for stainless steel tag plates.
  • Conduit Adapter: /CB4, /CD4, /CF4 for different thread types (G1/2, 1/2NPT, M20).
View full details

Product Description

The Yokogawa FLXA21 is a 2-wire, dual-channel transmitter/analyzer designed for various types of liquid measurements, such as pH, ORP, conductivity, inductive conductivity, and dissolved oxygen. Here's a breakdown of its key features and specifications:

Key Features and Capabilities

  • Dual Channel Measurement: The FLXA21 can accept two sensor modules, each capable of measuring one of the following:
    • pH/ORP
    • Conductivity (SC)
    • Inductive Conductivity (ISC)
    • Dissolved Oxygen (DO)
  • Self-Diagnostics: The system continuously checks for issues like electrode contamination, damage, or low liquid levels, reducing maintenance costs.
  • Wide Input and Output Ranges:
    • pH: -2 to 16 pH
    • ORP: -1500 to 1500 mV
    • Conductivity: 0 µS/cm to 200 mS/cm (depending on cell constant)
    • Dissolved Oxygen: 0 to 50 mg/L (ppm)

Accuracy and Performance

  • pH Accuracy: ±0.01 pH
  • ORP Accuracy: ±1 mV
  • Temperature Accuracy: ±0.3 °C for most sensors
  • Conductivity: ±0.5% F.S. for measurements from 2 µS/cm to 200 mS/cm
  • Dissolved Oxygen: ±0.05 ppm or ±0.8% F.S., whichever is greater

Power Supply and Signal Output

  • Loop Powered: Nominal 24 V DC, supports a wide range (16 to 40V DC for pH/ORP, SC, DO inputs; 17 to 40V DC for ISC)
  • Output: 4-20 mA with HART digital communication
  • Burnout Function: Allows detection of sensor failure or disconnection (e.g., 3.6 mA or 22 mA signals for different conditions)

Display and Interface

  • LCD Touchscreen: Black and white, 213x160 pixels, with adjustable contrast.
  • Multi-Language Support: Supports 12 languages, including English, Japanese, German, and Chinese.

Mechanical and Environmental Specifications

  • Housing: Polycarbonate, IP66, NEMA Type 4X, and CSA Type 3S/4X certified.
  • Mounting: Offers various mounting hardware options, including universal mounting kits, pipe and wall mounts, and panel mounts.
  • Ambient Operating Temperature: -20 to +55°C
  • Storage Temperature: -30 to +70°C
  • Humidity: 10 to 90% RH at 40°C, non-condensing.

Digital Communication

  • HART Protocol: Provides digital communication, enabling advanced diagnostics, configuration, and measurement data output.
  • Calculated Data: The analyzer can also calculate and output data from both sensors (in dual-sensor configurations).

Model Breakdown (Suffix Codes)

The FLXA21's suffix codes define various configuration options such as power supply type, housing material, input types, and language set. Some examples include:

  • Power Supply: Always -D (fixed configuration)
  • Housing: -P (plastic)
  • Inputs: -P1 for pH/ORP, -C1 for Conductivity, etc.
  • Output: -A for 4-20 mA with HART
  • Language Set: -LA for English and 11 additional languages

Optional Add-ons

  • Mounting Hardware: /UM for universal mounting kit, /U for pipe/wall mount, /PM for panel mount.
  • Hood Options: /H6, /H7, /H8 for stainless steel hoods with various coatings.
  • Tag Plate: /SCT for stainless steel tag plates.
  • Conduit Adapter: /CB4, /CD4, /CF4 for different thread types (G1/2, 1/2NPT, M20).

Download PDF file here:

Click to Download PDF