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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
Ex approval). These data can differ from the data listed herein, for example regarding the process
conditions or the voltage supply.
General data
316L corresponds to 1.4404 or 1.4435
Materials, wetted parts
Ʋ Process fitting
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 (SHS FPM 70C3 GLT), FFKM (Kalrez 6375), FFKM
(Kalrez 2035), FFKM (Kalrez 6230 - 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
Between ground terminal, process fitting and antenna
Process fittings
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,
process fitting and antenna)
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)