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11 Supplement
VEGAPULS SR 68 • 4 … 20 mA/HART - two-wire
38294-EN-160707
11 Supplement
11.1 Technical data
Note for approved instruments
The technical data in the respective safety instructions are valid for approved instruments (e.g. with
Exapproval).Thesedatacandierfromthedatalistedherein,forexampleregardingtheprocess
conditions or the voltage supply.
General data
316L corresponds to 1.4404 or 1.4435
Materials, wetted parts
Ʋ Processtting 316L
Ʋ Process seal On site (instruments with thread: Klingersil C-4400 is
attached)
Ʋ Antenna 316L, 316L electropolished, 316L Safecoat-coated
Ʋ Antenna impedance cone PTFE TFM 1600 oder PTFE INOFLON M290, PEEK
Ʋ seal, antenna system FKM(SHSFPM70C3GLT),FFKM(Kalrez6375),FFKM
(Kalrez2035),FFKM(Kalrez6230-FDA)
Materials, non-wetted parts
Ʋ Plastic housing plastic PBT (Polyester)
Ʋ Aluminium die-casting housing Aluminium die-casting AlSi10Mg, powder-coated - basis:
Polyester
Ʋ Stainless steel housing 316L
Ʋ Seal between housing and housing lid Silicone SI 850 R, NBR silicone-free
Ʋ Inspection window in housing cover
(optional)
Polycarbonate
Ʋ Ground terminal 316L
Ohmic contact
Betweengroundterminal,processttingandantenna
Processttings
Ʋ Pipe thread, cylindrical (ISO 228 T1) G1½ according to DIN 3852-A
Ʋ American pipe thread, conically 1½ NPT, 2 NPT
Ʋ Flanges DIN from DN 25, ASME from 1"
Weights
Ʋ Instrument (depending on housing,
processttingandantenna)
approx. 2 … 17.2 kg (4.409 … 37.92 lbs)
Ʋ Antenna extension 1.6 kg/m (1.157 lbs/ft)
Length antenna extension max. 5.85 m (19.19 ft)
Torques
Max. torques, antenna system
Ʋ Mounting screws, antenna cone 2.5 Nm (1.8 lbf ft)
Ʋ Compression nut, parabolic antenna 50 Nm (36.89 lbf ft)
Ʋ Counter nut, parabolic antenna 40 Nm (29.50 lbf ft)