Niagara 6600 Series, Инструкция по установке, эксплуатации и обслуживанию

Страница: 21 / 44

NIAGARA Installation, Operation & Maintenance Manual M600
Rev. E 18
Do not install the flow meter on the intake side of the pump. This precaution is to avoid low pressure and the conse-
quent risk of damage to the lining of the measuring tube.
If the application requires periodic removal of the flow meter for maintenance, then a bypass line should be installed.
If a valve lies on the pipeline, then the flow meter should be installed before the valve and not after it.
The orientation of the flow meter should be such that the Empty Pipe Detection Electrode is always on the topside of
the pipe, otherwise the Empty Pipe Detection function may not work.
Install the flow meter vertically or at an incline with flow from down to up as this ensures that the pipe is always full.
For horizontal installations, the electrode axis should always be in the horizontal plane. The flow meter should be
installed such that the forward flow is always in the direction pointed by the arrow that is placed on the sensor body.
Use of suitable gaskets can prevent leakage from near the flanges. However, gaskets should be perfectly aligned
with the holes. Improperly aligned gaskets can cause considerable errors in the measurement.
DIRECTION OF FLOW
LOW HI
SET LA
EPD BDF
SET HA
DI
RE
CT
IO
N
O
F
FL
O
W
LO W
HI
SE T
LA
EP
D
BD
F SE
T
HA
DIR
EC
TIO
N O
F F
LO
W
LO W
HI
SE
T
LA
EP D
BD
F SE
T
HA
DIRECTION OF FLOW
LOW HI
SET LA
EPD BDF
SET HA
C) Highest point in pipe line.
Risk of air accumulation.
D) Flow from up to
down could give rise
to partially empty pipe.
B) Flow from down to
up ensure pipe full pipe
A) Electrode axis in
the horizontal plane
Fit gaskets,
checking to ensure
it is perfectly centered.
Poorly aligned gaskets
can cause catastrophic
leaks and flow errors.