Ametek DR6500 Handbook page 28

INSTALLATION
3
CAUTION!
Do not install the device above objects in the silo (ladder, supports etc.) or pit. Objects in the silo
or pit can cause interference signals. If there are interference signals, the device will not
measure correctly.
If it is not possible to install the device on another part of the silo or pit, do an empty spectrum
scan.
Equipment and obstacles: how to prevent measurement of interference signals
Do not put the device immediately above equipment and obstacles in a silo or pit. This can have
an effect on the performance of the device.
INFORMATION!
If possible, do not install a nozzle on the silo centerline.
Figure 3-8: Equipment and obstacles: how to prevent measurement of interference signals
1 We recommend that you do an empty spectrum recording if there are too many obstacles in the radar beam (for more
data, refer to
2 Beam radius of the antenna: refer to the table below. The beam radius increases by increments of "x" mm for each
metre of distance from the antenna.
Beam radius of the antenna
Antenna type
Lens, DN40 (1½¨)
Lens, DN70 (2¾¨)
28
Empty spectrum recording on page 93).
Beam angle
www.drexelbrook.com
[mm/m]
8°
4°
DR6500
Beam radius, x
[in/ft]
70
35
DR6500-PM-English-Issue 1
0.8
0.4