E-BAM-9805 Manual Rev B.docx
Page 17
2.8 Filter Tape Loading
Filter tape must be loaded into the E-BAM for sampling. One roll of tape will last anywhere from a
few weeks to more than a year, depending on the Tape Advance setting (see section 3.6.5) and
ambient particulate levels. It is important to have spare rolls of tape available to avoid data
interruptions. Used filter tape should never be “flipped over” or re-used. This will result in inaccurate
measurements! When loading a roll of filter tape, use the following steps:
1. If the nozzle is in the down position, it will need to be raised
.
Enter the Load Filter Tape
screen in the Operate menu. The unit will raise the nozzle and provide a prompt to load the
filter tape.
2. If replacing a used roll of tape, remove the old roll and then thoroughly clean the nozzle and
vane as described in section 5.5.
3.
An empty core tube must be installed on the left (take-up) reel hub. This provides a surface
for the used tape to spool-up on. Met One supplies a plastic core tube to use with the first roll
of tape. After that, use the empty cardboard core tube left over from the last roll to spool-up
the new roll.
Never fasten the filter tape directly to the aluminum hub!
4. Load the new roll of filter tape onto the right (supply) reel and route the tape through the
nozzle area as shown in Figure 2-14. Attach the loose end of the filter tape to the empty core
tube with tape.
5. Rotate the tape roll to remove excess slack, then install the plastic spool covers tightly. The
spool covers clamp the tape rolls to the hubs to prevent them from slipping.
6. Press the grey MOVE button to verify tape is properly loaded.
7. Press the X button to return to the Operate menu.
Figure 2-14 Proper Loading of the Filter Tape
2.9 Warm-up Period
The E-BAM must warm up for at least one hour before optimum accuracy of the concentration data
can be obtained. This is because the beta detector contains a vacuum tube which must stabilize.
This applies any time the unit is powered up after being off for more than a moment. Setups, tests,
and flow calibrations can be performed during this warm up time. The first hour of data should often
be discarded or ignored.
