76
11 Supplement
VEGAPULS SR 68 • 4 … 20 mA/HART - two-wire
38294-EN-160707
Pressure
Without reflux valve
With reflux valve
1.5 bar (21.76 psig)
5.0 m
3
/h
3.2 m
3
/h
2 bar (29.0 psig)
5.5 m
3
/h
4.5 m
3
/h
Air volume with parabolic antenna, depending on pressure (recommended area)
Pressure
Without reflux valve
With reflux valve
0.5 bar (7.25 psig)
3.0 m
3
/h
1.2 m
3
/h
0.6 bar (8.70 psig)
3.2 m
3
/h
1.4 m
3
/h
0.7 bar (10.15 psig)
3.4 m
3
/h
1.7 m
3
/h
0.8 bar (11.60 psig)
3.5 m
3
/h
1.9 m
3
/h
0.9 bar (13.05 psig)
3.6 m
3
/h
2.0 m
3
/h
1 bar (14.5 psig)
3.8 m
3
/h
2.2 m
3
/h
1.5 bar (21.76 psig)
4.3 m
3
/h
3.5 m
3
/h
2 bar (29.0 psig)
4.8 m
3
/h
4.0 m
3
/h
Thread
G⅛
Closure with
Ʋ
Non-Ex
Dust protection cover of PE
Ʋ
Ex
Threaded plug of 316Ti
Reflux valve - unmounted (as option with non-Ex version, included in the scope of delivery with Ex
version)
Ʋ
Material
316Ti
Ʋ
Seal
FKM (SHS FPM 70C3 GLT), FFKM (Kalrez 6375)
Ʋ
for tube diameter
6 mm
Ʋ
Opening pressure
0.5 bar (7.25 psig)
Ʋ
Nominal pressure stage
PN 250
Electromechanical data - version IP 66/IP 67 and IP 66/IP 68; 0.2 bar
Options of the cable entry
Ʋ
Cable entry
M20 x 1.5, ½ NPT
Ʋ
Cable gland
M20 x 1,5; ½ NPT (cable ø see below table)
Ʋ
Blind plug
M20 x 1.5; ½ NPT
Ʋ
Closing cap
½ NPT
Material ca-
ble gland
Material seal
insert
Cable diameter
4.5 … 8.5 mm
5 … 9 mm
6 … 12 mm
7 … 12 mm
10 … 14 mm
PA
NBR
–
●
●
–
●
Brass, nickel-
plated
NBR
●
●
●
–
–
Stainless
steel
NBR
–
●
●
–
●