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15.0
CONVERSION BETWEEN personalDataRAM VERSIONS
The personalDataRAM user has the option to convert from a model pDR-1000AN to
a model pDR-1200 or vice versa using the appropriate conversion kit. To convert
from a pDR-1000AN to a pDR-1200 (i.e., from a passive air sampling configuration
to an active one), the user requires the model pDR-AS conversion kit. To convert
from a pDR-1200 to a pDR-1000AN (i.e., from an active air sampling configuration
to a passive one), the user requires the model pDR-UB conversion kit.
15.1
Conversion Procedure From pDR-1000AN to pDR-1200
To effect this conversion, use model pDR-AS conversion kit. As you remove parts
from the pDR-1000AN, in order to attach the conversion kit components, store these
parts carefully for possible future re-conversion. Proceed as follows:
• Remove the two screws on the top of the large protective bumper that covers the
sensing chamber (see Figure 1). This bumper is not used on the pDR-1200;
• Remove the large protective bumper by lifting it firmly upwards and away from
the sensing chamber;
• Reinsert in the upper two threaded holes and tighten the two screws that had held
the protective bumper;
• Remove the socket-head screws on the front and back black covers that were
exposed by removal of the large top bumper. Lift away the freed front and back
covers of the sensing chamber; store them carefully for future use, ensuring that
their surfaces are not scratched or marred;
• Position one of the two gasketed (soft rubber) sensing chamber cover plates
provided in the conversion kit on the front side of the sensing chamber. Insert
and tighten the included socket head screw firmly making sure that the plate is
aligned perfectly with the top of the sensing chamber. Similarly, attach the other
cover plate on the back side of the sensing chamber;
• Identify the two black cups of the pDR-AS conversion kit. One of them has an
external o-ring (filter holder cup), and the other has no o-ring (cyclone cup);
refer to Figures 2 and 4 for the location of these cups on the pDR-1200 sensing
chamber. These cups can be installed on either side of the sensing chamber, i.e.,
the cyclone can be either on the left or the right side of the sensing chamber
(Figure 2 shows the case where the cyclone is on the right side);
• Attach one cup to the left side of the sensing chamber using the two black socket
head screws. Tighten screws firmly. Similarly, attach the other cup to the right
side of the sensing chamber;
• Take the cyclone/filter holder unit provided as part of the conversion kit, and
separate the 37-mm plastic filter holder from the metal cyclone by firmly pulling
the two units apart;
• Carefully slide the large open end of the plastic filter holder over the cup with the
external o-ring, previously attached to the sensing chamber. Ensure that the cup
is fully inserted into the filter holder;
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