DALL TUBE FLOW METER
http://data.posccaesar.org/rdl/RDS879209
<http://rds.posccaesar.org/2008/02/OWL/ISO-15926-2_2003#ClassOfInanimatePhysicalObject>
2006.06.08
u20683
A differential pressure flow meter where the restriction consist in a dall tube that is a combination of a venturi tube and orifice plate.
RDS879209
DALL TUBE FLOW METER
DALL TUBE FLOW METER
Qualified
The dall tube has a short, straight inlet section followed by an abrupt decrease in the inside diameter of the tube. This section, called the inlet shoulder, is followed by the converging inlet cone and a diverging exit cone. The two cones are separated by a slot or gap between the two cones. The low pressure is measured at the slotted throat (area between the two cones). The high pressure is measured at the upstream edge of the inlet shoulder.