Alnor APM 151 Manual Del Usario página 8

Step 3: The accessory case, located underneath
the Electronic Balometer, is now exposed.
Lift the pull tab and pull back to expose
the accessory items. See Figure 3. Remove
the spider assembly, support dowels and
handle from the case. Figure 3 also shows
the packing position of the accessory
frame channel pieces. If installing a
different hood size, remove these pieces at
this time.
Note: The APM 150 Electronic Balometer system
comes from the factory with a 2 ft. x 2 ft. (600 x
600 mm) nylon hood installed on the base. The
following steps will complete the preparation of
the Electronic Balometer for use with this hood. If
a different hood size is required for first time use,
go to the section titled ALTERNATE HOOD
INSTALLATION.
Step 4: Unfold the spider assembly mechanism.
See Figure 4. This mechanism will now be
inserted into the four hood support
brackets located in each corner of the
base. Grasp one of the wire formed legs in
each hand. Insert each of the legs into the
center hole of the hood support brackets.
Grasp the remaining two legs and insert
them into the center holes of the remaining
hood support brackets. If it is later found
that the hood is not held as tautly as
required, the spider assembly can be
moved upward to compensate.
Step 5: Place the four support dowels on the
spider assembly mechanism as shown in
Figure 4. The aluminum tips on the
dowels should be facing up. If a 2 x 4 or
3 x 3 (600 x 1200 or 900 x 900 mm) hood
set is to be used, the set of 8-inch
(200 mm) long dowels must be added to
either end of the long dowels.
Step 6: Raise the hood up until it is taut. Insert a
support dowel into one of the corners of
the frame nearest to you. Take care to
ensure that the support dowel is not
pressing against the hood material. Insert a
second support dowel into the remaining
corner close to you. Lift up the far side of
the hood. Pressing firmly down on the
support dowel, move the dowel into the
4
4
third corner. Finally, pressing down on the
last dowel, insert it into the remaining
corner.
Step 7: If desired, install the detachable handle
next, as shown in Figure 4.
Figure 4—Instrument assembly
this handle each time before use. Be sure it does
not loosen while the instrument is being used or
while it is being carried from place to place.
Step 8: Verify that the sensor connector is
attached to the meter. If it is not attached,
line up the key as shown in Figure 5 and
firmly press the connector into the meter.
Tighten the connector by rotating the
knurled ring.
Figure 5—Sensor connector attachment
Make a habit of
checking the tightness of