Micropilot FMR20 HART
Endress+Hauser 17
Beam diameter W as a function of beam angle α and distance D.
40 mm (1.5 in) antenna, α 30 °
W = D × 0.54
40 mm (1.5 in) antenna with flooding protection tube, α 12 °
W = D × 0.21
80 mm (3 in) antenna with or without flooding protection tube, α 12 °
W = D × 0.21
Measurement in plastic vessels
A0029540
15 Measurement in a plastic vessel with a metallic, interfering installation outside of the vessel
1 Pipe, tubing
2 Ladder
3 Grate, railing
If the outer wall of the vessel is made of a non-conductive material (e.g. GFR), microwaves can also
be reflected by interfering installations outside of the vessel.
Please ensure there are no interfering installations made of a conductive material in the signal beam
(see the beam angle section for information on calculating the beamwidth diameter).
Please contact the manufacturer for further information.
Protective hood
For outdoor use, a protective hood is recommended.
The protective hood can be ordered as an accessory or together with the device via the product
structure "Accessory enclosed".
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