Rosemount 5600 Series, Reference Manual

Page: 15 / 210

Reference Manual
00809-0100-4024, Rev BA
September 2005
Rosemount 5600 Series
1-7
Measuring Range
The diagrams below show how the measuring range is influenced by the
antenna type, dielectric constant of the liquid (
ε
r
) and the process conditions.
For optimum performance the maximum measuring distance should be kept
within the range indicated with darker color in the diagrams. Values are valid
for free propagation measurement without still-pipes (bridles).
For liquids with
ε
r
that are smaller than 1.9 such as liquefied gases, an 8 inch
or bigger diameter antenna is recommended if measurement is done with free
propagation. In this case the measuring range in calm surface tanks is in
typical cases 50 ft. (15 m).
To increase the measuring range further in turbulent tanks, a still-pipe can be
used. For still-pipe mounted 5600 transmitters the typical measuring range is
115-160 ft. (35-50 m) in turbulent tanks with liquids having
ε
r
less than 1.9.
Figure 1-4. Applications with calm product surface
(1)
Figure 1-5. Applications where the product is gently stirred, causing minor turbulence
(1)
Figure 1-6. Applications with turbulent product surface conditions
(1)
Table 1-1. Categories of liquids
a Oil, gasoline and other hydrocarbons, petrochemicals (dielectric constant,
ε
r=1.9-4.0)
b Alcohols, concentrated acids, organic solvents, oil/water mixtures and acetone (
ε
r=4.0-10)
c Conductive liquids, e.g. water based solutions, dilute acids and alkalis (
ε
r > 10)
(1) Measuring range in ft. (m).
0 0 0 0
33 (10)
a b c a b c a b c a b c
0 0
a b c a b c
66 (20)
98 (30)
131 (40)
164 (50)
33 (10)
66 (20)
98 (30)
131 (40)
164 (50)
33 (10)
66 (20)
98 (30)
131 (40)
164 (50)
33 (10)
66 (20)
98 (30)
131 (40)
164 (50)
33 (10)
66 (20)
98 (30)
131 (40)
164 (50)
33 (10)
66 (20)
98 (30)
131 (40)
164 (50)
0
a b c
33 (10)
66 (20)
98 (30)
131 (40)
164 (50)
3” Cone
6” Process
Seal
6” Cone
5600-O
C_1AA
8” Cone
Rod/
4”Cone
4” Process
Seal Parabolic
0
0 0 0
33 (10)
66 (20)
98 (30)
131 (40)
33 (10)
66 (20)
98 (30)
131 (40)
33 (10)
66 (20)
98 (30)
131 (40)
33 (10)
66 (20)
98 (30)
131 (40)
33 (10)
66 (20)
98 (30)
131 (40)
33 (10)
66 (20)
98 (30)
131 (40)
a b c a b c a b c
a b c
0 0
a b c a b c
164 (50) 164 (50) 164 (50) 164 (50)
164 (50) 164 (50)
0
33 (10)
66 (20)
98 (30)
131 (40)
a b c
164 (50)
5600-OC
_2AB
3” Cone
6” Process
Seal
6” Cone 8” Cone
Rod/
4”Cone
4” Process
Seal
Parabolic
0
0 0 0
33 (10)
66 (20)
98 (30)
33 (10)
66 (20)
98 (30)
33 (10)
66 (20)
98 (30)
33 (10)
66 (20)
98 (30)
33 (10)
66 (20)
98 (30)
33 (10)
66 (20)
98 (30)
a b c a b c a b c
a b c
0 0
a b c a b c
0
33 (10)
66 (20)
98 (30)
a b c
5600-OC_3AA
Note: 4” and 6” Process Seal Cones are not
recommended for turbulent conditions
3” Cone
6” Process
Seal
6” Cone 8” Cone
Rod/
4”Cone
4” Process
Seal
Parabolic