feature and suitable occasion：
○ least
losing pressure (up to biggest pressure balance 8-10%)
○ at very
wide flowing scope,super to hole plate and nozze.
○ for big
flowing,clean flowing measure.
○ not
suitable for high temp,high pres. Flowing measurement.
○ISO5167―91making
standard:GB2624―93
parameter：
|
nozzle |
tube |
|
DN=65～500mm
PN=0.6～2.0MPa
β=0.316～0.775
ReD＝1.5×105～2×106
|
1.non
-processing
DN=200～1600mm
PN=0.6～1.0MPa
β=0.4～0.7
ReD＝2×105～2×106
2.processing
DN=50～250mm
PN=0.6～1.0MPa
β=0.4～0.75
ReD＝2×105～106 |
