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Quick Start Guide
2.1.5
Mounting location
Take time to assess a suitable mounting location. Avoid mounting the level
switch near the filling point, internal structures, and walls of a silo (or other
vessel). When mounting the extended length versions of the level switch, it
is especially important to consider internal structures. Forcing the level
switch into a small or congested space risks damage to the sensor and could
impair the protection it provides.
2.1.6
Sliding sleeve
Tighten both M8 screws with a torque of 20 Nm to establish a seal and
maintain the process pressure. See
Figure 2-2: Sliding Sleeve, M8 Screws
A
A. Two off M8 screws
2.1.7
Flange mounting
A suitable gasket must be fitted to provide a seal when the flanges are
tightened.
2.1.8
Tightening threaded process connections
When tightening the threaded process connection of a Rosemount 2521:
•
Use an open-ended wrench on the hexagonal boss of the level switch or
the sliding sleeve.
•
Never tighten by using the housing.
•
Do not exceed the maximum torque of 80 Nm.
2.1.9
Hygienic applications
The food-grade materials are suitable for use under normal and predictable
hygienic applications (according to directive 1935/2004 Art.3). There are
currently no hygienic certifications for the Rosemount 2521.
2.1.10 Vibrating forks
Bending, shortening, or extending the forks will damage the level switch.
12
Figure
2-2.
October 2020
Quick Start Guide
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