Emerson Rosemount 5408 Reference Manual page 164

Specifications and reference data
February 2020
A.1.2 Measuring range
Table A-1: Maximum Measuring Range, ft. (m)
Model
Rosemount 5408
Rosemount 5408:SIS
(1) The Rosemount 5408:SIS has two operational modes: Safety (SIS) and Control/Monitoring.
Safety (SIS) mode must be set when used in Safety Instrumented Systems. Control/Monitoring
mode is intended for use in a Basic Process Control System (BPCS).
Note that a combination of adverse process conditions, such as heavy turbulence, foam,
and condensation, together with products with poor reflection may affect the measuring
range.
Measuring range for solids
The figures given in
range may differ depending on other contributing application conditions such as product
filling, how the product piles up, silo diameter vs. angle of repose, internal obstacles within
the silo, dust, condensation, antenna build up, etc.
Table A-2: Recommended Measuring Range for Solids, ft. (m)
Antenna
1½-in. (DN40) cone
2-in. (DN50) cone/process seal
3-in. (DN80) cone/process seal
(6)
4-in. (DN100) process seal
(6)
4-in. (DN100) cone
(7)
8-in. (DN200) parabolic
(1) Plastic powder, etc. (Dielectric constant: 1.2)
(2) Plastic pellets, etc. (Dielectric constant: 1.35)
(3) Lime powder, cement, sand, etc. (Dielectric constant: 1.5)
(4) Kernels, brans, etc. (Dielectric constant: 1.5)
(5) Wood chips/pellets, etc. (Dielectric constant: 1.7)
(6) Cone and process seal antennas are the preferred choice for most solid applications. For specific recommendations in
dusty applications, see section "Dust management" in the Measuring Level and Volume of Solid Materials
Note.
(7) Recommended for longer measuring ranges, typically > 66 ft (20 m).
164
(1)
130 (40) in Control/Monitoring mode
82 (25) in Safety (SIS) mode
Table A-2 should be considered as guidelines; the total measuring
Light Light
(1)
powder granulates
and pellets
16 (5) 33 (10)
(6)
16 (5) 33 (10)
(6)
49 (15) 66 (20)
66 (20) 98 (30)
115 (35) 130 (40)
Performance class
Standard
130 (40)
Heavy Grains
(3)
powder
(2)
66 (20) 66 (20)
82 (25) 82 (25)
98 (30) 98 (30)
130 (40) 130 (40)
130 (40) 130 (40)
Reference Manual
00809-0100-4408
Ultra accuracy
50 (15)
50 (15)
(4)
Larger
(5)
particles
82 (25)
98 (30)
130 (40)
130 (40)
130 (40)
Technical
Reference Manual