Bronkhorst®
Instruction Manual mini CORI-FLOW™ M1x
9.17.050O
12
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The best location is a horizontal pipe segment or a segment where the fluid direction is upward.
·
Gas might accumulate in a horizontal segment if it is followed by a downward segment. Do NOT mount the
instrument in a location like this.
·
Mounting in a downward pipe segment with an open end is strongly dissuaded, especially if the pipe
diameter is 1/2" or more. Gravity might cause the segment to drain; depending on the system dimensions
and the viscosity of the metered fluid, this effect might be stronger or weaker.
·
If the instrument is part of a closed fluid system, mounting the instrument in a downward pipe segment is
not preferable, but may be considered if other mounting locations are more problematic.
To minimize the risk of gas entrapment by cavitation, the preferred location to install a control valve is downstream from
the instrument, for a pump the preferred location is upstream.
2.3.3
Mechanical isolation
Prevent vibrations from the environment and comprising system from being transferred to the instrument, by
mechanically isolating instruments from each other and their surroundings. Consider the following measures:
·
Mount the instrument on a mass block supported by (silicon or rubber) shock absorbing pads.
o
Provide sufficient space around the instrument and the mass block to allow free movement on the shock absorbers.
o
Do not attach additional objects to a mass block if not necessary.
o
Mass blocks and shock absorbers can be obtained at your Bronkhorst representative.
·
If possible, use flexible tubing and cabling to connect the instrument to the system.
·
Apply bends or so-called 'pig tails' in piping/tubing and cabling.
·
Do not bundle cables (bundled cables are more rigid).
Preventing resonance
If mounted to the same structure,
vibrations from one instrument might
interfere with the resonance frequency of
another instrument.
To minimize resonance, mount instruments
on individual mass blocks. Preferably,
mount multiple instruments parallel to
each other.
2.3.4
Piping requirements
·
Use piping or tubing that is suitable for the operating conditions of the application (media, maximum temperature,
maximum operating pressure).
·
Do not install small diameter piping/tubing on high flow rates and avoid abrupt angles or other disturbances within a
distance of 10 times the (inside) pipe diameter from the inlet or outlet of the device.
·
Do not install pressure regulators within a distance of 25 times the (inside) pipe diameter from a controlling instrument.
