Endress+Hauser Micropilot FMR53 - Page 42

Micropilot FMR53, FMR54
42 Endress+Hauser
A
B
90°
90°
90°
90°
90°
90°
90°
90°
90°
90°
A0018974
Depending on the device version the marking may be a circle or two parallel lines.
Information concerning nozzles
The horn antenna should project out of the nozzle; select the version with the antenna extension
100 to 400 mm (4 to 16 in) if necessary (accessory).
H
1
øD
A0016822
 20 Nozzle height and diameter for horn antenna
1 Mounting nozzle
Antenna ØD Maximum nozzle height H
max
(Antenna without antenna extension)
150mm/6" 146 mm (5.75 in) 185 mm (7.28 in)
200mm/8" 191 mm (7.52 in) 268 mm (10.6 in)
250mm/10" 241 mm (9.49 in) 360 mm (14.2 in)
Antenna versions < 150mm/6" are not suitable for free-space installation in the tank. They
should only be used in bypasses or stilling wells.
Measurement from the outside through plastic walls
• Dielectric constant of the medium: ε
r
> 10
• If possible use an antenna 250 mm (10 in).
• The distance from the tip of the antenna to the tank should be approx. 100 mm (4 in).