Siemens SITRANS FS230 Compact Operating Instructions page 103

Description
Relative humidity
Mechanical environment resistance class 4M3 for industrial enclo‐
sure
Climatic resistance class 4K4H
EMC performance
Table 7-28
Description
Process medium tempeature within the acceptable temperature
range for the sensors
Fluid must be sonically conductive
Operation outside the Reynolds transition region for best accuracy -
Table 7-29
Description
Approvals
Accuracy
Repeatability
Pipe size range
Wall Thickness Range
Pipe material
SITRANS FS230
Compact Operating Instructions, 05/2021, A5E38755607-AC
• Emission
• Immunity
Process medium conditions
Performance section
Technical specifications
7.9 Operating conditions
Specification
95 %
• IEC 60068-2-64 test Fh: Ran‐
dom vibration
• IEC 60068-2-27 test Ea and
guidance: Impact
• IEC 60068-2-2 test B: Dry heat
• IEC 60068-2-1 test A: Cold
• IEC 60068-2-78 test Cab: Damp
heat, steady state
• IEC 60068-2-14 test N: Change
of temperature
• EN 55011 / CISPR-11
• EN/IEC 61326-1 (Industry)
NAMUR
Specification
(-40 to 230 °C for High Tempera‐
ture 991 sensors)
-
Specification
• ATEX Zone 2
• IECEx Zone 2
• FM Class I Div. 2
• FMc Class I Div. 2
± 0.5 ... 1 % for velocities above 0.3
m/s and >10 diameters straight run
± 0.25 % (based on ISO 11631)
12.7 ... 10 m (0.5 ... 394")
0.64 ... 76.2 mm (0.025 ... 3.0")
Any sonically conductive material
(steel, plastic, aluminum, glass, ce‐
ment, ductile iron, copper)
103