Endress+Hauser micropilot M FMR 240, Руководство по эксплуатации

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Micropilot M FMR 240 with PROFIBUS PA Mounting
E Hauser 17
Measuring range
The usable measuring range depends on the size of the antenna, the reflectivity of the
medium, the mounting location and eventual interference reflections. The maximum
configurable range is 20 m (65 ft) for all Micropilot M (larger ranges up to 35 m (114 ft)
on request).
The following tables describe the groups of media as well as the achievable measuring
range as a function of application and media group. If the dielectric constant of a
medium is unknown, it is recommended to assume media group B to ensure a reliable
measurement.
Measuring range depending on vessel type, conditions, and product for
Micropilot M FMR 240:
Product class DK (
ε
r) Examples
A 1,4...1,9 non-conducting liquids, e.g. liquefied gas
1)
1) Treat Ammonia NH3 as a medium of group A, i.e. use FMR 230 in a stilling well.
B 1,9...4 non-conducting liquids, e.g. benzene, oil, toluene, …
C 4...10
e.g. concentrated acids, organic solvents, esters, aniline, alcohol,
acetone, …
D > 10 conducting liquids, e.g. aqueous solutions, dilute acids and alkalis
Product class Storage tank
Calm product surface
(e.g. intermittent filling,
filling from bottom,
immersion tubes).
Buffer tank
Moving surfaces
(e.g. continuous filling, from above,
mixing jets).
Process tank with agitator
Turbulent surface.
Single stage agitator <60 RPM.
Measuring range Measuring range Measuring range
FMR 240 (horn dia):
40 mm /
1½"
50 mm /
2"
80 mm /
3"
100mm/
4"
40 mm /
1½"
50 mm /
2"
80 mm /
3"
100mm/
4"
40 mm /
1½"
50 mm /
2"
80 mm /
3"
100mm/
4"
A DK(
ε
r)=1,4...1,9 to use a stilling well (20 m / 65 ft) or FMR 240 with Wave Guide antenna
1
(3.8 m /12.5 ft)
B
DK(
ε
r)=1,9...4
3 m /
10 ft
5 m /
16 ft
10 m /
33 ft
15 m /
49 ft
2 m /
7 ft
2,5 m /
8 ft
5 m /
16 ft
7,5 m /
25 ft
1 m /
3 ft
1,5 m /
5 ft
2 m /
7 ft
3 m /
10 ft
C DK(
ε
r)=4...10
6 m /
20 ft
10 m /
33 ft
15 m /
49 ft
20 m /
65 ft
3 m /
10 ft
5 m /
16 ft
7,5 m /
25 ft
10 m /
33 ft
1,5 m /
5 ft
2 m /
7 ft
3 m /
10 ft
5 m /
16 ft
D DK(
ε
r)>10
9 m /
30 ft
15 m /
49 ft
20 m /
65 ft
20 m /
65 ft
5 m /
16 ft
7,5 m /
25 ft
10 m /
33 ft
12,5 m /
42 ft
2 m /
7 ft
3 m /
10 ft
5 m /
16 ft
7 m /
23 ft
1) In the event of horizontal stress (e.g. agitators), mechanical support is required or provide the Wave Guide antenna with a protective pipe.