Figure 13 Vertical alignment of the sensor
1 Spacer 2 Distance from interior crown of pipe to top of frame
5.1.2.5 Align the sensor vertically – Flo-Dar with SVS
The sensor must be aligned vertically to make sure that the sensor is above the flow under normal
full flow conditions and that the SVS is activated under surcharge conditions.
Item to collect: Ruler or tape measure
1. Measure directly above the crown of the pipe to the top of the frame. Refer to Figure 11
on page 17.
2. If the pipe lip is longer than 140 mm (5.5 in.), install the 12-inch spacer between the wall mount
bracket and the frame. Refer to Figure 14.
3. Loosen the clamp on the wall mount bracket and put the top of the frame above the crown of the
pipe at the specified distance:
• 152.4 mm (6 in.) for a pipe diameter that is less than 610 mm (24 in.)
• 127 mm (5 in.) for a pipe diameter that is equal to or larger than 610 mm (24 in.)
4. Tighten the clamp and measure the frame position again to make sure that it is at the correct
position.
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