Technical information

Technical Information 5
Radar Tank Gauge
Blocking distance
The blocking
distance (= BD) is the
minimum distance
form the reference
point of the
measurement
(mounting flange) to
the medium surface
at maximum level.
Note! If an antenna
extension is used, its
length has to be added.
Note! Inside the blocking distance of 7532 RTG/7533 RTG,
a reliable measurement can not be guaranteed.
Measuring range depending on vessel type, conditions, and product for Micropilot S
Media group Stilling well/ Bypass Free space (Storage tank)
Measuring range Measuring range
7532 RTG ≥ DN150 7533 RTG 7530 RTG
DN150/200/250
7531 RTG
A
DC (εr) = 1.4...1.9 38 m/124 ft — — —
B
DC (εr) = 1.9...4 38 m/124 ft 40 m/131 ft DN150: 10 m/33 ft
DN200/250: 15/49 ft m
10 m/33 ft
C
DC (εr) = 4...10 38 m/124 ft 40 m/131 ft DN150: 15 m/49 ft
DN200/250: 20 m/65 ft
15 m/49 ft
D
DC (εr) > 10 38 m/124 ft 40 m/131 ft DN150: 20 m/65 ft
DN200/250: 25 m/82 ft
20 m/65 ft
max. measuring range
with custody transfer
approvals
NMi: 20 m/65 ft
PTB: 30 m/98 ft
NMi: 25 m/82 ft
PTB: 30 m/98 ft
NMi and PTB:
DN150: 20 m/82 ft
DN200/250: 25 m/82 ft
NMi and PTB: 10
m/33 ft
20m
A
100%
BD
referencepoint of
measurement
Max.
Level
Blocking
distance (BD)
Stilling well /
Bypass
Free space (Storage tank)
7532 RTG 7533
RTG
7530
RTG
7531
RTG
from flange 1 m/40" 1 m/40" Length
of horn
(see Page
28)
390
mm/15"
540
mm/21"