VEGA VEGAPULS 54K enamel - Manual (Page 8)

8 VEGAPULS 54K enamel
24 101-EN-041227
1.4 Antennas
The antenna is the eye of the radar sensor.
The shape of the antenna, however, doesn’t
give a casual observer the slightest clue on
how carefully the antenna geometry must be
adapted to the physical properties of electro-
magnetic waves. The geometrical form deter-
mines focal properties and sensitivity - the
same way it determines the sensitivity of a
unidirectional microphone.
Horn antennas
The horn antenna is the classi-
cal radar antenna in level
measurement. The antenna
focuses the radar signals very
well. Fabricated of 1.4571
(stainless steel) with enamel
coating or Hastelloy C22, the
antenna is physicaly resistant,
and is well suited for pres-
sures up to 16 bar at product
temperatures up to 200°C.
Product description
HART ® handheld
HART Communicator
2
2
4 ...20 mA
HART ® handheld on the 4 … 20 mA signal cable
Adjustment with the HART ® handheld
Series 50 sensors with 4 … 20 mA output
signal can also be adjusted with the HART
®
handheld. A special DDD (Data Device De-
scription) is not necessary - the sensors can
be adjusted with the HART
® standard menus
of the handheld.
To make adjustments, simply connect the
HART
® handheld to the 4 … 20 mA output
signal cable or insert the two communication
cables of the HART
® handheld into the ad-
justment jacks on the sensor.