Emerson Rosemount Apex, Reference Manual

Page: 35 / 124

Reference Manual
00809-0100-4731, Rev FA
April 2003
2-19
APEX
™
and APEX Sentry
™
Radar Gauge
NOTE
It is possible to use a standoff pipe/spool piece supplied by a source other
than Rosemount; however, it is suggested that when the APEX and APEX
Sentry Radar Gauges are mounted, the end of the antenna be no more than
1-inch from the face of the window. For antenna lengths, refer to dimension
“D” in Dimensional Drawings on page A-9.
Figure 2-15. Window Centering
– Radar Gauge with Installed
Isolation Window
The APEX and APEX Sentry Radar Gauges are typically factory configured,
so in most situations, gauge adjustments are minimal. To ensure proper
operation, review the following information before installing the gauge. If,
however, your gauge was not configured at the factory, or if you need to
reconfigure the gauge for any reason, please note that the gauge can be
configured on the bench prior to installation or in the field. (Refer to Section 3:
Configuration.)
Correctly Installed Incorrectly Installed
Tank Nozzle
Spool Piece
Common Center
Line for Antenna
and Window
Correctly Aligned
PTFE Window
and Process
Wetted O-ring
Incorrectly Aligned
PTFE Window
and Process
Wetted O-ring
Center Lines for
Antenna and Window
should be the same
Spool Piece
Tank Nozzle