D-583-2N-E
(3) Space Saving Arrangement
If required straight pipe space is not obtainable upstream of the vortex flowmeter due to existing restrictions
on installation location, the OVAL Honey Vane S combined with a short pipe may be used to solve the space
problem.
• Honey Vane Outline Dimensions
Honey Vane
・
S
Honey Vane
・
L
t
φD
L
Taps for the pressure gage and/or thermometer,
if desired, should be located downstream of
the flowmeter as illustrated in the figure at right.
Thermometer tap should be located on the
downstream side of pressure detection and, at the
same time, upstream of the control valve.
Meter Body
Flow
Direction
Gage Tap
Thermometer
Tap
2 to 7D
φ6
D = Nominal dia.
Fig. 5.2
5.4 Pulsation
Compressors, Roots blowers and other Pulsation pressure generating sources could adversely affect meter
performance. Minimize pulsating pressures by referring to the following formula:
N < 0.72
ρ
V
2
(mmH
2
O)
where
N: Pulsation pressure (mmH
2
O)
ρ
: Density (kg/m
3
)
V : Minimum velocity (m/s)
If pulsation pressure is excessive, the following measures should be taken into consideration:
() Locate the source of pulsation downstream of the meter or locate it as far from the meter as possible.
(2) Provide a pulsation attenuator, such as a chamber or pulsation snapper.
(3) Shut off valves upstream and downstream of the meter when fluid flow is interrupted (as a precaution
against erratic signal generation at zero flow).
5.2 Pipes to be Used
Pipes having the inside diameter specified at the time you placed an order for this meter should be used for
upstream and downstream pipes. Otherwise, consult the factory for compatibility.
5.3 Location of Pressure Gage and Thermometer Taps
Fig. 5.
Nom.
Dia. (mm)
ø
D*
Honey Vane · S
Honey Vane · L
t
L
200
270
26
600
250
333
32.3
2000
300
378
38.7
2400
*. Dimensions at JIS 0K.
Unit: mm
Summary of Contents for EX DELTA II
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