Alarm output：
Junction box and level gauge
of Flame-proof Specification
Power supply:
AC or DC
Transmitter NRR261-2xx
Float sensor NAR300-11xxxx
1
2
3
4
5
6
7
8
9
10
L
GND N
L 1
11
12
13
14
15
16
17
18
19
20
FG
*1)､*4)AC90〜250V
50/60Hz
N.C
N.O
COM
*3）
*2)
N.C1
COM1
N.O1
N.C
COM
N.O
FG
H-
TB1
H+
FEL+ FEL-
TB2
FRAME
GUARD PROBE
*2）
*1)：
*2)：
*3)：
*4)：
*5)：
GND1SRASRASRA
N1
*5)
*6)
Special Cable for IS connection:
6 to 30 m
Ex d terminal
Connection screw M3
Power arrester
(mounted)
Yellow-green:
FG arrester GND
Ground at the safe area
( Class A ground )
Connection screw M4
Connection screw M3
Ex [ia] terminal
Connection screw M4
Green Blue 2 Blue 3
Led Blue
Yellow Black
White
* Blue1,Blue2,Blue3,Yellow-Green cables wired when shipping
Side view of Board mounting bracket
Ground at the safe area
(Class A ground)
Blue3: FG Arrester GND
Terminal fixing screw
If the power spec. is DC22 to 26V, terminal No. 1 is + and No. 5 is -.
Wire by selecting one or others of Explosion-proof side or IS side.
Connect if AC cable with FC is used
Please select the cable entry from order code for the tramsmitter
NRR 261.
To maintain IS capability, do not to exceed AC 250V 50/60Hz, DC 250 V
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