Balluff BMD 1L serie Betriebsanleitung Seite 106

4 Mounting
18
Fig. 10: Mounting in a standpipe
1 Holes (for mixing)
2 Standpipe - vertically mounted - max. deviation 10 mm (0.4 in)
3 Ventilation opening
A Rod probe with spacer (steel)
B Cable probe with centering weight
h Measuring range
For standpipes, select the probe length such that the upper blocking
distance (dead band) of the probe is above the upper ventilation hole.
This allows you to measure the total level range of the medium in the
standpipe. When designing the standpipe, keep the upper blocking
distance of the probe in mind and plan the length above the upper
Microwaves can penetrate many plastics. This is why plastic tubes are
problematic for measurement applications. If durability is no problem,
we recommend the use of uncoated metal standpipes.
When the BMD 1L is used in standpipes, contact with the tube wall
must be avoided. We recommend for this purpose a cable probe with
centering weight.