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Reference Manual
MAN-0091, Revision 8
Figure 2-3 Net Safety Millennium II Basic (M2B) or junction box (JB) enclosure and sensor dimensions
A
in
mm
in
Stainless
4.7 119 3.6
Steel
Aluminum
4.8 122 3.6
2.5
Mounting
Prior to mounting the sensor to the transmitter or junction box enclosure apply suitable grease (jet
lube, etc.) to the threading of the 3/4" FNPT (female NPT) conduit entry of the enclosure as well as the
threading on the sensor 3/4" MNPT (male NPT) fitting. This aids in protecting the enclosures from
water ingress. After the grease has been applied properly, fit and tighten the sensor to the transmitter
or junction box enclosure by using appropriate tools.
The transmitter and junction box have mounting holes to allow mounting to a flat surface or pole as
desired. Mounting kit accessories are available to aid in mounting the detector to a flat surface or a
pole. Contact your local Emerson Process Management representative for detailed information.
The sensor must always be mounted vertically such that its mouth is pointed in the downward position
as shown in
Installation
B
C
D
mm
in
mm
in
mm
91
3.6
91
4.7 119 5.1 130 0.3 7.6 2.6
91
3.6
91
4.8 122 5.1 130 0.3 7.6 2.6
Figure
2-4.
E
F
in
mm
in
mm
in
Installation
G
H
I
mm
In
mm
in
mm
66
2.9
74
2.8
71
66
2.9
74
3.0
76
June 2016
J
in
mm
8.9 226
9.0 229
5
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