User's Manual

Micropilot FMR67
Endress+Hauser V. 1, Rev. 3, 11-04-2017 27
Avoiding interference echoes
β
α
A0031817
Metal deflection plates installed at an angle to scatter the radar signals help prevent interference
echoes.
Optimization options
•
Antenna size
The larger the antenna the smaller the beam angle α,resulting in fewer interference echoes .
• Mapping
Measurement can be optimized by electronically suppressing interference echoes.
• Variable flange seal for FMR67
Variable flange seals of sizes DN80 to DN150 (3" to 6") are available for the FMR67 with Drip-off
antenna
3)
. They can be used to align the device to the product surface. Maximum angle of
alignment: 8 °.
How to order:
– Order with the device
4)
– Order as an accessory: →  72
• Alignment unit for FMR67
Flanges sized 4" / DN100 and higher are optionally available with an alignment unit
5)
They allow
the sensor to be optimally aligned to suit conditions in the container in order to prevent
interference reflections. The maximum angle is 15 °.
The purpose of sensor alignment is primarily to:
– Prevent interference reflections
– Increase the maximum possible measuring range in conical outlets
3) Feature 070 in the product structure "Antenna", option GA
4)
Feature 100 in the product structure "Process connection", options PL, PM, PN, PO, PQ, PR
5) see feature 100 in the product structure "Process connection".