AXFA11 Magnetic Flow Converter

Brand: Yokogawa Electric Corporation

The AXFA11 magnetic converter has been developed based on Yokogawa's decades long experience in magnetic flowmeters. 

The AXFA11 continues the tradition of high quality and reliability that has become synonymous with the Yokogawa name and in addition features an even higher level of performance and increased functionality.

Retaining all the features and functions of the Admag series of converters, in addition the AXFA11 offers an enhanced dual frequency excitation method as an option for difficult applications as well as new diagnostics to detect electrode coating. 

Combined with a flowtube utilizing the optional replaceable electrode design, the user benefits through the ability to schedule maintenance for reduced process downtime and in turn a lower total cost of ownership.
Features
  • Optional enhanced dual frequency excitation method
  • Minimum fluid conductivity of 1 μS/cm 
  • Diagnostics to detect insulating coatings on the electrodes 
  • Improved accuracy specification
  • Three line display with infrared switches 
  • High speed pulse output 
  • “Easy Setup” Parameters 

Specifications

Accuracy

  • 0.05 % of Span - Current Output
  • 0.18 % of Rate + 0.2 mm/sec
  • 0.2 % of Rate
  • 0.25 % of Rate + 1 mm/sec
  • 0.35 % of Rate
  • 0.35 % of Reading
  • 0.4 % of Rate + 1 mm/sec
  • 0.5 % of Rate
  • 0.85 % of Rate

Alarm

  • 2.4 mA or Less
  • Fixed to 4 mA, 21.6 mA or more

Ambient Temperature Range

  • -40° to 60° C (-40° to 140° F)

Approvals & Certifications

  • EMC EN 61326, EN 61000-3-2, EN 61000-3-3, AS/NZS 2064

Cable Material

  • Polyethylene Insulated PVC Sheathed
  • PVC Insulated & Sheathed - Excitation Cable

Communication

  • BRAIN
  • HART

Consumption

  • 20 W - Max.

Cover Material

  • Aluminum Alloy

Damping Adjustment

  • 0.1 to 200 seconds

Diagnostics

  • Electrode Coating Function
  • System, Process, Setting Alarms & Warnings

Display

  • Full Dot-Matrix LCD (32 x 132 Pixels)

Distance

  • 6” (15 cm) or more - Distance from Power Line
  • Up to 1.5 Kilometers - Communication Distance (HART)
  • Up to 2 Kilometers - Communication Distance (BRAIN)

Electrical Connectors

  • ANSI 1/2” NPT Female
  • M4 Screw Terminal

Electrical Protection

  • Lightning Protection

Enclosure Finish

  • Mint Green (Munsell 5.6BG 3.3/2.9 or its Equivalent)
  • Polyurethane Corrosion-Resistant Coating - Cover Mounting Screws
  • Silver Gray (Munsell 3.2PB 7.4/1.2 or its Equivalent)

Enclosure, Body Material

  • Aluminum Alloy - Converter Material

Environmental Protection

  • IP66
  • IP67
  • NEMA 4X

Humidity

  • 0 to 100 % - Ambient Humidity

Input Impedance

  • 10 kiloohms or more at 24 kHz

Insulation Resistance

  • 100 megaohms at 500 Vdc - between Power Terminals & Ground Terminal, between Power Terminals & Each Output / Status Input Terminal
  • 20 megaohms at 100 Vdc - between Ground Terminal & Each Output/Status Input Terminal, between Output/Status Input Terminals

Load

  • 0.22 µF or Less - Load Capacitance
  • 3.3 MH or Less - Load Inductance

Materials of Construction

  • Ceramics Lining
  • PFA Lining
  • Polyurethane Lining

Mounting

  • 2” Pipe Mount
  • Panel Mount
  • Surface Mount

Operating Temperature

  • -20° to 60° C (-4° to 140° F) - Indicator's Operating Range

Operating Voltages

  • 80-264 Vac
  • 90-130 Vdc

Output

  • 30 Vdc (OFF) / 200 mA (ON) - One Pulse, One Alarm, Two Status Outputs
  • 4-20 mA DC (Load Resistance: 0 to 1 Kiloohm, Including Cable Resistance)
  • Pulse Signals

Power Supply

  • 100-120 Vdc - Rated Power Supply
  • 100-240 Vac, 50/60 Hz - Rated Power Supply

Pulse Range

  • 0.0001 to 10,000 Pulse/second - Output Rate
  • 0.05 to 100 milliseconds - Pulse Width

Repeatability

  • 0.05 % of Rate + 0.5 mm/sec (V< 1 m/sec (3.3 ft/sec))
  • 0.1 % of Rate (V≥ 1 m/sec (3.3 ft/sec))

Resistance

  • 10 ohms or Less - with Lightning Protector
  • 100 kiloohms or more (OFF) - Load Resistance
  • 100 ohms or Less - Grounding Resistance
  • 200 ohms or Less (ON) - Load Resistance
  • Load Resistance: 250 to 600 ohms - Communication Line Conditions (Including Cable Resistance)

Supply Voltage

  • 1,350 Vac between Power Terminals & Ground Terminal for Two seconds - Withstand Voltage
  • 160 Vac between Excitation Terminals & Ground Terminal for Two seconds - Withstand Voltage
  • 200 Vac between Excitation Terminals & Each Output/Status Input Terminal for Two seconds - Withstand Voltage

Temperature Range

  • 10° to 30° C (50° to 86° F) - Fluid Temperature

Update Time

  • 30 Minute - Warm-Up Time

Vibration

  • 0.5 G or Less (Frequency 500 Hz or Less) in Conformity with IEC 60068-2-6
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