Balluff BMD 1L-K Serie Manual De Instrucciones página 131

Pressure
Bypass tubes
in chapter "Technical data". Keep in mind for the adjustment that the
default setting for the measuring range refers to water.
the vessel. Before use, check if the seal material is resistant against
the measured product and the process temperature.
data" or on the type label of the sensor.
Standpipes or bypass tubes are normally metal tubes with a diameter
in) such a tube corresponds to a coax measuring probe. Lateral inlets
Measuring probes can be mounted in bypass tubes up to DN 200.
For bypass tubes, select the probe length such that the blocking
distance (dead band) of the probe is above and below the lower
complete range of the medium in the bypass tube (h). When design-
ing the bypass tube, keep the blocking distance of the probe in mind
opening accordingly.
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 bypass tubes, contact with the tube wall
must be avoided. We recommend for this purpose a cable probe with
centering weight.
Caution:
When mounting, make sure that the cable is straight over its entire
length. A kink in the cable can cause measurement errors and contact
with the tube.
is a risk of the rod probe being pressed against the tube wall by in-
contact with the tube wall. In the case of cable probes, the cable can
be strained.
Keep in mind that buildup can form on the spacers. Strong buildup
4 Mounting
Technical
17