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Example:
Suppose a pipe of 300 mm inner diameter (DN300) and 5.5 mm thick. In the chart we can
see that the distance that the pipe adaptor must extend above the external wall is H = 60.5 -
s = 60.5 - 5.5 = 55 mm.
The values in the chart are calculated considering the gasket supplied with the instrument,
which is 3 mm thick. If the thickness of the gasket is changed, the value of H will change.
The equation to calculate H' for a gasket of thickness d is the following:
In the previous example, if the gasket was 5 mm thick, the distance that the adaptor should
extend above the external wall would be H' = 55 + 3 - 5 = 53 mm.
Drill a 48.5 mm diameter hole in the pipe to insert the pipe adaptor and weld the fitting to the
pipe.
If the pipe is made of concrete or other material to which the pipe adaptor cannot be
welded, a clamp-on accessory or saddle should be used. In this case, please contact us to
inform about the suitable sensor length.
The axis of the pipe adaptor should be perfectly perpendicular to the pipe axis.
5.2
Sensor mounting
Once the pipe adaptor is mounted, place the flat seal in its position and install the sensor
with the arrow pointing in the flow direction. The electrodes must be perfectly perpendicular
to the pipe axis.
In order to align the sensor, the two bolts or pins situated in each side of the cylinder in the
top of the FLOMAT sensor must be aligned with the axis of the pipe and the arrow pointing
in the flow direction.
5.3
Tightening torque
The tightening torque for the flange screws should not exceed 7.1 Nm.
The tightening torque for the threaded fitting should not exceed 21 Nm.
5.4
Electronic converter connection
See point 2.1 on page 15.
5.5
Electronic converter programming
FLOMAT sensor is insertion type, so it can be installed in pipes with different diameters.
NOTE: It is essential to program the internal diameter of the pipe, in order that the converter
can indicate the correct flow rate (see point 6.4 on page 30 or point 13.3 on page 46).
H' = H + 3 - d
14
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