4
4.1 Allgemeines
Der Druckschalter dient innerhalb von
explosionsgefährdeten Bereichen zur be-
triebsmässigen Druckregelung.
Für den Einsatz ist zwingend eine Ex-i
Trennbarriere mit ATEX Bescheinigung
[Ex ia] IIC erforderlich.
4.1 Généralités
L’interrupteur à pression
est appliqué en
emplacement dangereux pour la régulation
de pression en service.
Une barrière Ex-i avec certificat ATEX
[Ex ia] IIC est requis contraignant pour
l’installation.
4.1 General points
Pressure switches are used for controlling
the pressures in potentially explosive atmos-
pheres. The pressure switches are designed
for stationary installation only.
An Ex-i barrier with ATEX approval
[Ex ia] IIC must be installed in the set-up
.
U
0
... 24 V
I
0
... 100 mA
P
0
... 0,6 W
L
0
... 8mH
C
0
... 100nF
Ex ia IIC
U
i
> U
0
I
i
> I
0
P
i
> P
0
„Simple Apparatus“ Pressure switch
Associated Apparatus Ex-i Relais
}
}
}
o
o
o
4
2
1
1+
2+
3-
8
7
9
10
11
12
14
15
230V AC
I
II
P
}
}
}
8
7
9
I
II
10
11
12
14
15
24V DC
24V DC
ERR
o
o
o
4
2
1
1+
2+
3-
P
Switching example with Ex-i barrier F90141:
Switching example with Ex-i barrier F90140:
If another type of Ex-i relay is used, make sure its electrical rating limits are within the specification of the
pressure switch.
Rating:
U
i
= 24 V
I
i
= 100 mA
P
i
= 0,6 W
L
i
= 0
C
i
= 0
Hazardous Area
Non Hazardous Area
