Sealing And Screw Connections; Moisture - ABB 261GS Operating Instruction

4.2

Sealing and screw connections

Connecting G ½ B spigot:
For sealing, a flat gasket must be used in accordance with DIN
EN 837-1.
NPT threaded connection:
Seal the threads with PTFE or another approved resistant
sealant.
Process connection with flush diaphragm:
Prior to mounting the device, install a welded connection or
tapped hole according to relevant soldering standards (for
process connection and welded connection dimensions, see
"Specifications").
Process connection for ball valve:
An appropriate ball valve connection or weld-in sleeve is
required for mounting purposes. In this case, the seal is
formed by a cone at the outer end of the process connection
(metal/metal). For information on the weld-in sleeve, see
"Specifications".
4.3

Moisture

Use suitable cables and tighten cable glands securely. The
transmitter can also be protected against the ingress of
moisture by routing the connecting cable downward before
securing it. This allows rain and condensation to drip down.
This is especially important for installation in outdoor areas
and rooms that are exposed to moisture (e.g., due to cleaning
processes) or on cooled or heated tanks.
Fig. 5: Steps for preventing the ingress of moisture
261Gx, 261Ax | IM/261Gx/Ax-EN Rev. 08 13