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
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