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Air Flow Meter - A2G-25

Brand: WIKA Alexander Wiegand SE & Co. KG
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For ventilation and air-conditioning.
Features
  • Easy installation
  • User-friendly display
  • Easy-to-read LCD display
  • Temperature compensated
  • Output signals for differential pressure and air volume flow
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For ventilation and air-conditioning.
Features
  • Easy installation
  • User-friendly display
  • Easy-to-read LCD display
  • Temperature compensated
  • Output signals for differential pressure and air volume flow
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Specifications

Brand

Measuring Element

  • Piezo Measuring Cell

Measuring Range

  • Modbus Version: 0 ... 2,500, 0 ... 7,000 Pa
  • Analogue output signal (0 ... 10 V/4 ... 20 mA): 0 ... 1,000, 0 ... 2,000, 0 ... 5,000, 0 ... 7,000 Pa

Accuracy

  • All data refer to the above mentioned Pressure Range
  • 0 to 1,000 Pa: ± 2 Pa ± 1.5 %
  • 0 to 2,000 Pa: ± 2 Pa ± 1.5 %
  • 0 to 2,500 Pa: ± 2 Pa ± 1.5 %
  • 0 to 5,000 Pa: ± 2 Pa ± 1.5 %
  • 0 to 7,000 Pa: ± 2 Pa ± 1.5 %

Units (adjustable in the Menu)

  • Differential Pressure: Pa, kPa, mbar, inWC, mmWC
  • Air flow: m³/h, m³/s, l/s, cfm

Process Connection

  • For Hoses with inner diameter 4 or 6 mm

Power Supply UB

  • AC 24 V or DC 24 V ± 10 %

Output Signal

  • POUT: 4 ... 20 mA, load R minimum 1 k Ω linear to the set output unit
  • VOUT: 4 ... 20 mA, load R minimum 1 k Ω linear to the set output unit
  • POUT: DC 0 ... 10 V, load R minimum 1 k Ω linear to the set output unit
  • VOUT: DC 0 ... 10 V, load R minimum 1 k Ω linear to the set output unit

Electrical Connection

  • Screw terminals Max. 1.5 mm²
  • Cover: PG
  • Cable Gland M16

Current Consumption

  • < 1.0 W (DC 0 ... 10 V), < 1.2 W (4 ... 20 mA), < 1.3 W (Modbus)

Case

  • Cover: Polycarbonate (PC)
  • Plastic (ABS)

Type of Mounting

  • Wall Mounting

Zero Adjustment

  • Push Button on the printed Circuit board or via Modbus register

Permissible Temperatures

  • Medium Temperature: -10° to +50° C, version with automatic zero point setting: -5° to +50° C
  • Ambient Temperature: -20° to +70° C

Ingress Protection

  • IP54

Weight

  • 150 g
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Applications

  • Measuring the volume flow in ventilation ducts for air and non-combustible gases
  • Used for fans and ventilators of various manufacturers
  • Monitoring of air volume flow or pressure directly on the air handling unit
  • For use with fans/blowers from various manufacturers
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