GESTRA ORGS 11-1, Руководство по установке

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9
Installation
Installation requirements
The water sample taken from the cooling water system must flow continuously through the oil
detector & alarm ORGS 11-2. We recommend a flowrate of 200 l/h.
The sampling of the cooling water should take place downstream of a potential oil leak at the
highest point and, if possible, in a horizontal line. Since the oil flows in the upper part of the pipe we
recommend the installation of a welding saddle according to DIN 2618 for collecting the oil droplets.
The line leading to the measuring pot of the ORGS 11-2 should be vertically ascending, running
directly into the bottom part of the measuring pot. Avoid any narrow parts in the supply line since
they could give rise to undesired emulsification of the oil.
If space is a consideration and the measuring pot has to be installed at a lower point than the main
cooling line make sure that the line leading to the measuring pot features sufficiently sized bends in
order to prevent emulsification.
To achieve the recommended flowrate of approx. 200 l/h provide the main cooling water line with a
standard orifice plate in order to throttle the flow velocity between the water sampling location and
its re-entry point.
The pressure drop
∆ p
v
across the measuring pot is
0.06 bar
.
The pressure drops of the connecting lines depend on the design and layout of the installation and
must be ascertained individually. The calculated resistance coefficient
ζ
can be used to determine
the opening ratio and, consequently, the required diameter "d" for the opening of the standard orifice
plate.
For more information on the sizing and layout of fluid dynamic systems please refer to the
corresponding technical literature and relevant standards.