IFM Electronic SF1A Serie Instrucciones De Servicio página 13

ENGLISH
• Wiring:
• Process connections
SF11 * A = M12
• Permissible operating temperature range at the mounting location and max-
imum temperature range of the medium:
• In principle, the type test according to 94/9/EC only takes atmospheric
conditions (0.8...1.1 bar and mixture temperatures of -20...+60°C) into
account. For pressures outside these ranges use must be assessed and
approved by the user.
• Maximum effective internal inductance (Li) and capacitance (Ci) of the flow
sensors (the values apply to potted cables):
Article no.
SF311A
SF211A
SF111A
SF * 1 * A
Articles with cable/variants of cable units SF*1*A:
For variants of cable units with potted cables of a different length the
values of the cable must be taken into account.
0.68 µH (Li) / 95 pF (Ci) per metre of potted cable.
*1) Thus the maximum effective internal inductance of the unit results in:
Li = 6 µH + cable length in (m) × 0.68 µH.
*2) Thus the maximum effective internal capacitance of the unit results in:
Ci = 1.2 nF + cable length in (m) × 0.095 nF.
SF * 1 * A
SF21 * A = G¼
-20 ... +60°C
Cable length
6 m
6 m
6 m
**m
BN
BK
GY
WH
BU
Internal inductance
(total) in µH
6
6
6
1*)
GB
1
2
VS2000 Exi
3
7
8
SF31 * A = G½
Internal capaci-
tance (total) in nF
1.2
1.2
1.2
2*)
IRL
7