VEGA WEIGHTRAC 31 Profibus PA - Manual (Page 65)

65
10 Supplement
WEIGHTRAC 31 • Profibus PA
43837-EN-131119
10 Supplement
10.1 Technical data
General data
316L corresponds to 1.4404 or 1.4435
Materials, non-wetted parts
Ʋ Detector tube 316L
Ʋ Scintillation material PVT (Polyvinyltoluene)
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 Measuring frame (optional) Galvanized steel, stainless steel
Ʋ Clamp collar (DIN 3015, part 1) PA (Polyamide)
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) + measurement tube
Ʋ Stainless steel housing, with electron-
ics
8.36 kg (18.43 lbs) + measurement tube
Ʋ Measurement tube 7.1 kg/m (4.77 lbs/ft)
Ʋ Measuring frame (optional) 29 … 66 kg (64 … 146 lbs)
Conveyor belt width (see table) 500 … 1600 mm (19.7 … 63 in)
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. In case the radiation intensity
decreases, for example due to rising loading volume of
the conveyor belt, the measured value of WEIGHTRAC
31 changes in proportion to the loading volume.