Measuring Range; A.1.2 Measuring Range - Emerson Rosemount 5408 Reference Manual

Specifications and Reference Data
Maximum level rate
40 mm/s as default, adjustable up to 200 mm/s
A.1.2

Measuring range

Maximum measuring range
Rosemount 5408:
Rosemount 5408:SIS:
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.
Accuracy over measuring range
The measuring range is limited by the blind zone at the very top of the tank. In the blind
zone, the accuracy exceeds ±0.20 in. (±5 mm) and measurements may not be possible.
Measurements close to the blind zone will have reduced accuracy (see
For the extended cone antennas, the reduced accuracy zone ends 11.8 in. (30 cm) below
the antenna end.
(3) 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).
148
130 ft. (40 m)
130 ft. (40 m) in Control/Monitoring mode
82 ft. (25 m) in Safety (SIS) mode
(3)
(3)
Figure A-1).
Reference Manual