Emerson Rosemount Apex User Manual

Reference Manual
00809-0100-4731, Rev FA
April 2003
A-3
APEX
™
and APEX Sentry
™
Radar Gauge
South Africa Metal tanks <-111 dBm at a distance of 25 meters
Site license required
Spain Metal tanks <10mW of power transmitted
Sweden Metal tanks
Switzerland
Taiwan Metal tanks 24-26 GHz
Thailand
Trinidad & Tobago Metal tanks 24.05-26.05 GHz, Average field strength <500 µW/m at 3 meters
Peak field strength limited to 5000 µW/m at 3 meters
0.075 eirp
(1)
Turkey Metal tanks “provided...equipment does not transmit any RF from the tank to outside and is not
open to the interferences coming from out, there is not any prohibition in its use”
United Arab Emirates No government approval required
United Kingdom Metal tanks 2.7W eirp
(1)
, 24.15-26.05 GHz, -20 to 55°C
United States Metal or concrete tanks
Venezuela Metal tanks 500 µW/m at 3 meters
5000 µW/m at 3 meters
(1) Eirp = Equivalent Isotropically Radiated Power
Country Installation Restrictions Other Comments
TABLE 1. Beamwidth vs. Distance from Gauge
Distance (D)
from Gauge
Radius (r) from Flange Centerline to
Beamwidth Edge
2-in. Antenna 3-in. Antenna 4-in. Antenna
ft (m) ft (m) ft (m) ft (m)
2 (0,6) 0.4 (0,12) 0.2 (0,07) 0.2 (0,06)
4 (1,2) 0.8 (0,25) 0.5 (0,15) 0.4 (0,11)
6 (1,8) 1.2 (0,37) 0.7 (0,22) 0.6 (0,17)
8 (2,4) 1.6 (0,49) 1.0 (0,29) 0.7 (0,22)
10 (3,0) 2.0 (0,62) 1.2 (0,37) 0.9 (0,28)
15 (4,6) 3.0 (0,93) 1.8 (0,55) 1.4 (0,42)
20 (6,1) 4.1 (1,23) 2.4 (0,73) 1.8 (0,56)
25 (7,6) 5.1 (1,54) 3.0 (0,92) 2.3 (0,70)
30 (9,1) 6.1 (1,85) 3.6 (1,10) 2.8 (0,84)
35 (10,7) 7.1 (2,16) 4.2 (1,28) 3.2 (0,98)
40 (12,2) 8.1 (2,47) 4.8 (1,46) 3.7 (1,12)
45 (13,7) 9.1 (2,78) 5.4 (1,65) 4.1 (1,26)
50 (15,2) 10.1 (3,09) 6.0 (1,83) 4.6 (1,40)
55 (16,8) 11.1 (3,40) 6.6 (2,01) 5.1 (1,54)
60 (18,3) 12.2 (3,70) 7.2 (2,20) 5.5 (1,68)
65 (19,8) 13.2 (4,01) 7.8 (2,38) 6.0 (1,82)
70 (21,3) 14.2 (4,32) 8.4 (2,56) 6.4 (1,96)
75 (22,9) 15.2 (4,63) 9.0 (2,75) 6.9 (2,10)
80 (24,4) 16.2 (4,94) 9.6 (2,93) 7.4 (2,24)
85 (25,9) 17.2 (5,25) 10.2 (3,11) 7.8 (2,38)
Antenna Size Beam Angle
90 (27,4) 18.2 (5,56) 10.8 (3,30) 8.3 (2,52) 2-in. 22.9°
95 (29,0) 19.2 (5,86) 11.4 (3,48) 8.7 (2,66)
3-in. 13.7°
100 (30,5) 20.3 (6,17) 12.0 (3,66) 9.2 (2,80) 4-in. 10.5°
NOTE
Radar gauges should not be mounted in the top center of the tank. Off centered
mounting is preferred.
LEVEL-0038A
Beam Angle
D
Example: The beam
radius (r) at the bottom
of a 10-foot (3,05 m) (D)
vessel would be 0.9 ft
(0,28 m) for
a 4-inch antenna.
r

Emerson Rosemount Apex Specifications

General

Brand	Emerson
Model	Rosemount Apex
Category	Measuring Instruments
Language	English