NAR300 system for high temperature
Installation
Hauser
25
5.1.4
Dimensions of Ex [ia] sensor I/F Ex box
The Ex [ia] sensor I/F Ex box is used in combination with Ex d [ia] transmitter NRR261 or
Ex [ia] transmitter NRR262 in order to convert signals from the float sensor into electric
current signals. Normally, it is mounted on a tank yard's pipe and secured in place with a
U-bolt (JIS F 3022 B 50 type). It can also be mounted directly onto wall surfaces (requires
4-φ12 mm (0.47 in) holes and M10 securing nuts and bolts (not included in the delivery)).
75 (2.95)
113.7 (4.48)
165.2 (6.50)
61.2 (2.41)
!
222.2 (8.75)
74 (2.91)
100 (3.94)
18 (0.71)
147.2 (5.8)
L1
1
2
A0039885
14
Outline of Ex [ia] sensor I/F Ex box. Unit of measurement mm (in)
L1 For G1/2, NPT1/2: 85 mm (3.35 in), for M25: 107 mm (4.21 in)
1
U-bolt (JIS F3022 B50 material: Iron (chromate), 2 nuts and 2 flat washers included)
2
4-φ12 mm (0.47 in) holes
Use the order code of float sensor NAR300 to specify the conduit connection port.
When installing NAR300-16Axxx, however, specify NAR300-16AxxB since the
electrical conduit connection port will be G1/2.
