User-friendly on-site display for air flow or differential presure designed for environments and applications where electricity is not available.

One device is suitable for a range of different fan types. It also provides an easy way to measure flow rate in a duct system for example together with a FloXactTM averaging measurement probe.




The DPT-Flow-Batt is an on-site display designed for air handling units to measure the air flow on centrifugal fans. The DPT-Flow-Batt can also be used in the duct system as an on-site display for flow. The device can be used with several different measurement probes such as FloXactTM or pitot tube, and air dampers. The requirement is that the K-value of the measurement probe or damper is known.

Technical details

Accuracy (from FS): ±1.5 % (Including: general accuracy, temperature drift, linearity, hysteresis, long term stability, and repetition error)
Zero point calibration: by pushbutton
Measuring units: Pressure: Pa, kPa, mbar, inchWC, mmWC, psi
Flow: m3/s, m3/hr, cfm, l/s, m/s, ft/min
Supply voltage: 9 V battery
Current consumption: ~20 mA on active mode
Operating temperature: -20…+50 °C
Response time: 1.0−10 s, selectable via menu
Protection standard: IP54




Product series

Battery powered air flow meter

Measuring ranges (Pa)



With display

Other Air flow and velocity transmitters: