Q4000_M_0302e 07/09 page 2 of 2
Precautions on piping
• Pipes, especially newly installed ones, often have foreign matter (such as oil) on the inside.
• Be sure to clean the pipe before installing the electromagnetic meter.
• For optimum meter performance, follow the precautions given below and install the meter
where it can be easily accessed for maintenance purposes.
• There are no restrictions regarding mounting of the meter on the pipe except the display
surface should not be facing downwards.
WARNING: The pipe must always be filled completely with the flowing fluid.
The pipe fluid outlet must be at a higher level than the portion
of pipe where the meter is installed.
A leakage at the check valve will allow air into the pipe when the
pump stops and will prevent the pipe from being completely
filled.
When installing the meter on vertical piping, make sure to mount it on a
pipe section in which the fluid flows upwards. Before the meter 5 DN, after
the meter 2 DN)
WARNING: No solid substances must be inside the pipe.
Be sure to mount the meter on a vertical section of pipe in which the fluid
flows upwards. Also install a shut-off flange for cleaning.
WARNING: A straight section of the pipe is recommended
for meter installation.
During fully open position using various valves; the meter can be
fixed directly to a gate valve being fully opened.
Applicable to various control valves, such as butterfly and ball
valves.
Be sure to install control valves towards the lower end of the
downward flow as possible.
WARNING: No air must be sucked in.
Consider the position of suction mouth..
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