Emerson Rosemount 520, Quick Start Manual

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February 2019
10
Quick Start Guide
3.5 Flange with 1-in. ball valve mounting
1. Install a suitable flange connection to the tank wall.
2. Secure the provided flange and ball valve to the tank flange connection.
3. Secure the transmitter in the ball valve by use of the provided nut and gasket.
The recommended torque is 20 N-m.
Figure 5. Installation Drawing
A. Optional junction box
B. Refer to
Table 2
C. Tank top
D. Refer to
Table 2
E. Dead zone
F. Tank bottom
G. Vent pipe
H. Flange
I. 1-in. ball valve
J. 1-in. nipple pipe connector 1-to 1-in.
K. Refer to
Table 2
L. Gasket
M. 1-in. nut
N. Transmitter
Table 2. Flange Size for Flange with 1-in Ball Valve
Standard D (mm) B (mm) K (mm) d x n (mm)
DN25 PN16 115 16 85 14 x 4
JIS25A—16K 125 14 90 19 x 4
1-in. ANSI/150 108 16 79 16 x 4
A
G
C
F
E
H I J
L M N
64
315
D K
d
B
00825-0100-4520_RevAC.fm Page 10 Thursday, February 7, 2019 10:16 AM