Burkert 8176, Инструкции по безопасности

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3
T echnical data
3 . 1 E
lectrical versions and data
I gnition protection intrinsic safety E x " i "
T he LEVEL TRANSMITTER LT 8176
.
C
***
H
***,
LT 8177
.
C
***
H
***
are provided with intrinsi
-
cally afe circuits
.
T hese intrinsically safe circuits are connected on terminals which are
located in an
"
E x i
"
connection compartment
.
P ower supply and signal circuit
: (
termi
-
nal no
.
1
[ + ],
no
..
2
[-]
in the E x
"
i
"
connection compartment
)
I n
fl
ame proo
fi
ng intrinsic safety EE x ia IIC
/
IIB
O nly for connection to a certi
fi
ed intrinsically
safe circuit
.
M aximum values
:
U
i
=
30
V
I
i
=
131
m A
P
i
=
983
m W
E
ff
ective internal inductance L i is negligible
;
e
ff
ective internal capacity C i is negligible
I ndicating and adjustment circuit
: (
ter
-
minal
5
,
6
,
7
,
8
in electronics compart
-
ment or plug connection with double
chamber housing version
)
I n
fl
ame proo
fi
ng intrinsic safety EE x ia IIC
F or connection to the intrinsically safe power
supply and signal circuit of a passive
/
external
indication unit
(
PTB 02 ATEX 2136 X
).
T he rules for the interconnection of intrinsically
safe circuits between the ultrasonic sensors
LEVEL TRANSMITTER LT
8176
.
C
***
H
***,
LT
8177
.
C
***
H
***
and the external indication
unit are maintained
,
if the total inductance and
total capacity of the connection cable between
microwave sensors
LEVEL TRANSMITTER
LT
8176
.
C
***
H
***,
LT
8177
.
C
***
H
***
and the
indication unit L
cable
=
100
µ
H and C
cable
=
2
,
8
µ
F is not exceeded
.
T he indication and
adjustment module
(
AB
-
MODUL
-
B Ü RKERT
)
integrated in LEVEL TRANSMITTER LT
8176
.
C
***
H
***,
LT
8177
.
C
***
H
***
and connected in
-
terface converter are taken into account
.
C ommunication circuit
: (
I
²
C
-
BUS socket
in the electronics compartment
,
addi
-
tionally in the connection compartment
with double chamber housing version
)
I n ignition protection type intrinsic safety EE x ia
IIC
F
or connection to the intrinsically safe signal
circuit of an interface converter
(
PTB
07
ATEX
2013
X
).
I ndicating and adjustment module cir
-
cuit
: (
spring contacts in the electronics
compartment
)
I n ignition protection type intrinsic safety EE x ia
IIC
O
nly for connection to the indicating and
adjustment module
(
AB
-
MODUL
-
B Ü RKERT
)
6
LEVEL TRANSMITTER LT
817
*.
C
***
H
***
32829
-
EN
-
070615