1.
Flanged, wafer type
V-cone transducer is just a duct with flange. V-cone is
in pipe. Same flanges are welded on process pipe and mounted
with transducer.
When transducer is installed on pipe vertically with fluid
down to up, since negative& positive tapping at different
horizontal, height needs to be modified necessarily.
2. Welded type
Due to excellent abrasive resistance and sweeping function
of fluid to V-cone, V-cone flow transducer can be welded
on pipeline forever.
Requirement for upper & down stream:
For gas measurement, Reynolds number( Re) > 200.000, ¦Â¡Ý0.65
| For liquid measurement, Reynolds number(
Re) ¨Q 200.000, ¦Â¨R0.65 |
1. Detailed & precise parameter
of customer¡¯s process or specification by design institute
must be provided completely.
2. Select model according
to fluid features, operation condition, accuracy, installation
requirement etc.
3. Select material of pipe, flange,
V-cone and tapping type according to medium feature,
temperature, pressure, corrosiveness etc.
4. Select
nominal diameter, pipe thickness, flange pressure grade,
sealing surface, connection type of flowmeter pipe according
to medium temperature, flowrate and pressure.
5. Select
tapping type and material & grade of tapping parts according
to medium temperature, pressure and viscosity, dirty
or not etc.
6. Get the V-cone transducer model according
to above mentioned. Structure dimension is available
in dimension table. In remark column should specify
if accessories such as companion flange, bolt & nuts
& gasket, valve set etc. needed or not. Straight pipe
as required.
7. Design & calculate according to parameters
and suitable ¦Âto get favorable differential pressure,
turndown ratio and pressure loss.
8. Propose differential
pressure scale 10-30kPa to facilitate matching DP transmitter.
For low flowrate, differential pressure 0.5kPa or above
is suitable. 3kPa or above suitable for double flange
tapping. |
|
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