Quick Installation Guide
00825-0100-4031, Rev AA
April 2005
Duct Mount 285 Annubar
4
S
TEP
2: I
NSTALLATION
P
REPARATION
Operating Limitations
For the Annubar to produce accurate, repeatable flow measurement, the following must be
considered. The maximum allowed pressure and temperature limits are:
• Annubar Type D1 (duct mount without compression fitting): 10 psig @ -40°F to 850°F.
• Annubar Type D2 (duct mount with compression fitting): 10 psig @ -40°F to 300°F.
Annubar Installation Preparation
1. Make sure there is enough clearance to insert the Annubar into the duct.
2. Mark the mounting location of the Annubar, locating it along the center line of the
rectangular duct, or anywhere on the circumference of a round duct. Mark horizontal and
vertical center lines through the mounting location. For duct mount Annubars without
compression fitting (threaded stud welded to tip of sensor), extend the center line to the
opposite duct wall (or 180° around a circular duct), as shown in Figure 1.
Figure 1.
3. Measure and mark the locations of the mount screw holes and the opposite side support
hole (for Annubars with threaded stud welded to sensor tip) (see Table 2).
Figure 2.
Table 2. Installation dimensions inches (mm)
Annubar Model Number
A
285xxxxxxxxxx1x
0.75 (19.05)
285xxxxxxxxxx2x
1.31 (33.27)
285/
15
-4
90
013
-903
,
15
-4
9003
3-
90
3
A
H/2
A
A
A
H
A
A
Ø
A
A
180°
28
5/1
5
-4
90
013-
901,
15
-4
90
03
4-
90
1.e
ps
00825-0100-4031_Rev AA.fm Page 4 Monday, March 28, 2005 11:10 AM