![background image](http://html1.mh-extra.com/html/oval/d-160ts-7-e/d-160ts-7-e_instructions-manual_1662156013.webp)
D-160TS-7-E
13
6.8 Pulsation
The performance of the flowmeter can be affected if pressure pulsation from instruments such as roots
blower or compressor is significant. Minimize the pulsation pressure as much as possible by referring to the
following equation:
N< 22
ρ
V
2
(Pa)
where, N: Pulsation pressure (Pa)
ρ
: Density (kg/m
3
)
V: Min. Velocity (m/s)
If pressure pulsation is excessive, take the following measures:
①
Locate the source of flow pulsation away from or downstream of the flowmeter.
②
Install a pulsation attenuator, such as chamber or pulsation snapper.
③
At shutdown of the flow, shut off valves both upstream and downstream of the flowmeter. (To prevent
erroneous output at shutdown)
6.10 Changing Converter Orientation
The converter orientation can be changed in 90°
steps as shown in Fig. 6.12.
Fig. 6.11
Flow
Meter
Valve
Valve
Valve
Bypass line
Turning the converter with sensor leads
in place may cause disconnection of the
leads.
The converter can be rotated by
loosening its four hex socket head
screws, but be sure to disconnect
sensor leads before attempting to
rotate it.
Fig. 6.12
6.9 Bypass Line
For maintenance and servicing purposes, it is a good practice to provide a bypass line. Valves upstream and
downstream of the meter should be of a design which will not disturb fluid flow pattern, such as ball valves.
Cover
Cover
Clamp
90°
NOTE
:
CAUTION: