The TunnelCraft 3 Air Flow Monitor (AFM-S) is CODEL’s industry proven tunnel air flow monitor.Tunnel ventilation systems are designed to enable a sufficient throughput of air to be maintained to ensure a safe operating environment. These systems consume large amounts of power and need to be operated as efficiently as
possible. To do this it is necessary to know the effectiveness of the system in terms of air flow and direction developed within the tunnel.

Key Featuresafm-s_web

  • Single point ultrasonic measurement technology, uninterupted by traffic flow and sound reflections
  • No moving components providing maintenance free operation
  • Stainless steel construction, designed to withstand the harshest of tunnel environments
  • Measurement precision of +/- 0.2m/sec
  • Integral temperature measurement
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Measurement Air flow, direction and temperature
Measuring units m/sec / °C
Response Time 10 Seconds
Ambient Temperature -25°C to +50°C
Power supply 9 to 36V DC, 1% pk-pk, 20 MHz bandwidth (3VA Max) from seperate power supply
Construction Stainless Steel 316 to IP66
Analogue outputs 1 x FLOW 4-20mA current output, 1 x TEMP 4-20mA current output,
Relay Outputs 2 x volt-free SP contacts, 50V 400mA max, for flow direction and fault condition
Serial Data RS485 Modbus Protocol

To view theTunnelCraft NO2 full specification please click here to download the product datasheet.

Lang Filetype Document Link Size
English Adobe_Acrobat_Pro_PDF Tunnel Craft 3 AFM Datasheet Download File 400kb
English Adobe_Acrobat_Pro_PDF Tunnel Craft 3 AFM  Manual Download File 400kb

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