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Description
Specification
Measuring tube design
Split flow through 2 parallel tubes with combined cross-section
area 50% of the nominal pipe
The measuring tubes are bent in a trapezoidal curve
Self-draining design
Yes, when mounted vertically
11.6.2
Sensor cable specifications HART
Table 11-19 Sensor cable, basic data
Description
Specification
Number of conductors
4
Square area [mm
2
]
0.326 (AWG 22/7)
Screen
Yes
Outside color
● Standard version: gray (RAL 7001)
● Ex version: light-blue (RAL 5015)
External diameter [mm]
6.5 (standard); 12 (armored)
Maximum length [m (ft.)]
150 (492)
Installation environment
Industrial including chemical processing plants
Insulation material
Special polyolefin
Halogen-free
Yes
RoHS compliant
Yes
Torsional strength
● >3 million cycles at ± 180° on 200 mm
● Not adapted for garland mounting (festoon)
Permissible temperature range [°C (°F)]
-40 to +80 (-40 to +176)
Min. bending radius allowed
Single 5 X ø
Table 11-20 Signal cable recommendations
Description
Specification
Square area [mm
2
]
0.5 (AWG 20)
Linear resistance [Ohm/km]
≤ 120
Max. length [Ohm] (depends on total linear resist‐
ance)
< 500
Signal run time [ns/m]
≤ 5.3
Insulation resistance [MOhm*km]
≥ 200
Characteristic impedance 1 – 100 MHz [Ohm]
100 (±5)
Attenuation @ 1 Mhz
< 2.9 dB/100 m
Operating voltage (peak) [V]
≤ 300
Test voltage (wire/wire/screen rms 50 Hz 1 min) [V] = 700
Electrical data at reference temperature (20 °C)
Technical data
11.6 Construction
SITRANS FC330
202
Operating Instructions, 01/2019, A5E44030648-AB