3
INSTALLATION
Before installing your meter, review
the safety instructions given above
�
Examine your meter to make sure
there are no visible signs of shipment
damage
�
Plan your meter installation
by reviewing the following procedures
�
Your system must be mounted on a
vented tank
�
If the tank is unvented,
your local dealer or distributor can
supply a pressure cap
�
If the meter is located in a rigid piping
system where the fluid is trapped
(for example, by gravity, valves or
nozzles) thermal expansion of the
fluid
can create pressure spikes that can
damage a meter
�
Install a thermal relief
valve or otherwise allow for thermal
expansion of the fluid�
The
flowmeter
MUST be mounted so
that the rotor shafts are in a horizontal
plane
�
Mounting the meter with the
mechanical display facing horizontally
will orient the rotor shafts correctly
�
The mechanical display should never
face upwards or toward the ground
�
The weight of the rotors must be
supported by the horizontal rotor shafts
�
If installed incorrectly, performance,
life or accuracy could be affected
�
(
see Figure 1
)
Liquid can
flow
in a horizontal direction,
or a vertical direction, but in each case
the rotor shafts must be in a horizontal
plane
�
It is preferred to install the
flow-meter
upstream of a
flow
control or shut-off
valve, as the back pressure provided
by the valve will be
beneficial
to system
accuracy
�
The flow meter should
remain full of liquid at all times when
connected
�
Do not operate the flow-meter dir
ectly
discharging to the atmosphere
�
Prior to installation, determine whether
horizontal or vertical flow is r
equired
�
For vertical
flow
installations the liquid
should travel from bottom to top, i
�
e
�
it should rise vertically through the
fl
ow-meter
�
This will ensure that the
flow-meter
remains full of liquid, and
will prevent air entrapment in the meter
�
The back of the meter housing is
embossed with “INLET” and “OUTLET”
adjacent to its respective port to assist
in correct piping connections
�
figure 1
Correct
Horizontal Flow
Vertical Flow
InCorrect
Correct
