VEGA FIBERTRAC 31 Foundation Fieldbus - Manual (Page 62)

62
11 Supplement
FIBERTRAC 31 • Foundation Fieldbus
41780-EN-131119
11 Supplement
11.1 Technical data
General data
316L corresponds to 1.4404 or 1.4435
Materials, non-wetted parts
Ʋ Detector tube Galvanized steel with Santoprene rubber coating
Ʋ Scintillation material PS (Polystyrene)
Ʋ Aluminium die-casting housing Aluminium die-casting AlSi10Mg, powder-coated - basis:
Polyester
Ʋ Stainless steel housing 316L
Ʋ Seal between housing and housing
cover
NBR (stainless steel housing, investment casting),
silicone (Aluminium housing)
Ʋ Inspection window in housing cover
(optional)
Polycarbonate
Ʋ Ground terminal 316L
Ʋ Mounting accessory 316L
Process fittings
Ʋ Fastening lugs ø 9 mm (0.35 in), hole centre distance 119 mm (4.69 in)
Weight
Ʋ Aluminium housing, with electronics 3.4 kg (7.5 lbs) + Detector tube
Ʋ Stainless steel housing, with electron-
ics
8.36 kg (18.43 lbs) + Detector tube
Ʋ Detector tube 2.7 kg/m (1.81 lbs/ft)
Max. torque, mounting screws - fastening
lugs on the sensor housing
50 Nm (36.88 lbf ft)
Max. torque for NPT cable glands and Conduit tubes
Ʋ Aluminium/Stainless steel housing 50 Nm (36.88 lbf ft)
Input variable
Measured variable
The measured variable is the intensity of the gamma
radiation of an isotope. When the radiation intensity
decreases, for example due to rising medium, the meas-
ured value of FIBERTRAC 31 changes in proportion to
the level.