Endress+Hauser Proline Promag L 400 - Page 24

Installation Proline Promag L 400 PROFIBUS DP
24 Endress+Hauser

A0013964
Mounting the seals
L
CAUTION
An electrically conductive layer could form on the inside of the measuring tube!
Risk of measuring signal short circuit.
‣
Do not use electrically conductive sealing compounds such as graphite.
Comply with the following instructions when installing seals:
• Make sure that the seals do not protrude into the piping cross-section.
• For DIN flanges: only use seals according to DIN EN 1514-1.
• For "hard rubber" lining: additional seals are always required.
• For "polyurethane" lining: generally additional seals are not required.
• For "PTFE" lining: generally additional seals are not required.
Mounting the ground cable/ground disks
Comply with the information on potential equalization and detailed mounting instructions
for the use of ground cables/ground disks (→  41).
Screw tightening torques
Please note the following:
• The screw tightening torques listed below apply only to lubricated threads and to pipes
not subjected to tensile stress.
• Tighten the screws uniformly and in diagonally opposite sequence.
• Overtightening the screws will deform the sealing faces or damage the seals.
Screw tightening torques for EN 1092-1 (DIN 2501), PN 6/10/16
Nominal
diameter
Pressure rating Threaded
fasteners
Max. screw tightening torque [Nm]
[mm] [bar] [mm] Hard rubber Polyurethane PTFE
50 PN 10/16 4 × M16 – 15 40
65
1)
PN 10/16 8 × M16 – 10 22
80 PN 10/16 8 × M16 – 15 30
100 PN 10/16 8 × M16 – 20 42
125 PN 10/16 8 × M16 – 30 55
150 PN 10/16 8 × M20 – 50 90
200 PN 10 8 × M20 – 65 130
250 PN 10 12 × M20 – 50 90
300 PN 10 12 × M20 – 55 100
350 PN 6 12 × M20 111 120 –
350 PN 10 16 × M20 112 118 –
350 PN 16 16 × M24 152 165 –
400 PN 6 16 × M20 90 98 –
400 PN 10 16 × M24 151 167 –