Delta Controls DPT-2000 - Manual (Page 33)

31 IOM-DPT-A: FEB 2014
MINIMUM WIDTH OF JOINT AND MAXIMUM GAP FOR GROUP IIC ENCLOSURES
1/2NPT 12,7 L7
L8
10
1/2NPT
O15
M20x1,5
M72x1,5
13,3
12 L4
L6
L5
9
Nr
O15
+0,027 -0,040
-0,070
M20x1,5
M72x1,5
engaged(6)
width of joint min.10
min.6 threads
cemented joints
1
2
engaged
width of joint min.12,5
min.5 threads
min.5 threads
0,097 2
2
2
engaged(8)
A
B
A
L7
L6
B
L4
L8
L5 A-A
L4
Scale:2:1
B-B
(min. real)
width of joint
L [mm]
diameter
quantity
of joint
PN-EN 60079-1:2008
according to
minimum
D [mm] d [mm] D-d [mm]
Fig.7. The explosion - proof joints of DPT-2000ALW transmitter.