Tecfluid DP Series - Manual (Page 5)

5
4 INSTALLATION
For the model DP65, until DN300, the installation is between flanges (wafer).
the model DP500, from DN250 to DN500 includes flanges.
4.1 Straight pipe run
The minimum requirement of straight pipe, free of disturbing elements before and after
the flowmeter must be kept. For liquids these distances are equivalent to 3 times the DN
and for gases 8 times the DN.
4.2 Gaskets
The gaskets should be suitable for the product and they must be carefully centered.
It is recommended that the gaskets have an internal diameter of about 5 to 10 mm bigger
than the nominal flowmeter diameter. This will avoid reducing the free area when
tightening the flange screws, squeezing the seal.
Any non-suitable gasket can cause reading errors or interfere with the target disk
movement.
4.3 Internal diameter
The internal diameter of the pipe and the flowmeter should match. Otherwise, deviations
in the flow measurement may occur.