The volume flow transmitter type 679 have Bi-direction  pressure ranges. Variable measurement of pressure, flow or velocity of flow is available. Special sensors developed for each pressure range guarantee a physically precise and long term stable measurement. The diversity of versions ensure the use in many  various applications in HVAC or for fine measurement in the industry or medical sector.
 
Medium  : Air and neutral gases
Pressure range  : -1 ... 1 mbar / 0 ... 0.3 – 50 mbar
Output  : 0 ... 10 V, 0 ... 20 mA, 4 ... 20 mA
Accuracy  : < 0.5% fs
Electrical connection  : Screw terminals
Pressure connection  : Hose connector Ø 6.2 mm
                                         Screw mounting
 
*Special snap mounting bracket for easy single handed mounting in sheet steel of varying thicknesses
  With LCD-Display
*Adjustable measurement range
*Switchable output signals
*Full scale adjustable
*Adjustable k-Factor for flow and velocity
*Fast, easy mounting. Housing incorporates integral bracket for wall or ceiling mounting
*Application at over and low pressure range possible
*Resettable Zero Point (Reset button)