1. Position the enclosure on a flat, level surface in an area that meets the general siting
criteria as described in the BAM-1020 manual. The BX-902B may be installed on top of
a larger building as long as the enclosure is properly secured against falling. The stand
may be bolted to the mounting surface if necessary.
2. The sampling site must be equipped with electrical service. The BX-902B does not have
a circuit breaker or GFI inside. A single 15A service with a dedicated circuit breaker is
preferred. A heavy gauge extension cord may be used for temporary deployments.
3. Install the BAM-1020 into the enclosure. The rack mount inside the enclosure comes
with a pre-positioned cross member at the correct height so that the BAM-1020 PM10
inlet will be at least 2 meters high when the included 27” inlet tube is used. The cross
member supports the BAM-1020 while the rack screws (supplied with the BAM-1020)
are installed.
Note: The cross member and BAM-1020 may be positioned in a higher location in the
rack in order to allow a separate datalogger or telemetry instrument to be installed
below it. If this is done, then there must still be at least 8 inches of space between the
top of the BAM inlet tube receiver and the inside of the enclosure roof to allow the inlet
heater to be installed.
4. The enclosure comes with a 8119 inlet seal assembly that must be threaded into the
hole in the roof. Use Teflon pipe tape and install the seal tightly. Remove the white cap
and black rubber grommet from the inlet seal before lowering the supplied short inlet
tube through. Slip the Smart Inlet Heater assembly onto the inlet tube before inserting
the tube into the top of the BAM. Reinstall the black rubber grommet and white cap over
the inlet tube and tighten securely to prevent leaks around the tube. Tighten the two set
screws in the BAM inlet tube receiver.
Note: Longer inlet tubes up to 4 feet long may be used instead of the supplied short
tube. However, the inlet heads must be easily reachable for cleaning and flow
calibrations
5. Position the Smart Inlet Heater so that it is two inches above the top of the BAM inlet
tube receiver, then tighten the two set screws to secure it to the inlet tube. Install the
white insulation sleeve around the heater. It may be trimmed if necessary. Connect the
heater power cord to the BAM as described in the BAM manual.
Note: Additional enclosure heat control may be achieved by insulating the inlet tube
inside the shelter with hot water pipe insulation, available at a hardware store.
6. Install the ambient temperature sensor (supplied with the BAM-1020) onto the inlet tube
above the roof of the enclosure. Feed the sensor cable through one of the four cable
entry points on the left side wall of the enclosure and connect it to channel six of the
BAM as described in the manual. Coil up the extra cable length with a zip tie.
7. Install the PM2.5 cyclone (if used) and the PM10 inlet head onto the inlet tube.
8. Position the vacuum pump (supplied with the BAM) into the pump compartment in the
bottom of the enclosure. Route the power cord up through the grommet hole. Route the
pump control cable through the hole and connect it to the pump and the BAM, then coil
up the extra cable with a zip tie. Cut a length of pump tubing and route it through the
same hole. Save the extra tubing for replacements.
9. Install any other optional met sensors or accessories as needed, then install filter tape
into the BAM and run a SELF TEST routine.
BX-902B-9800 BAM-1020 Weatherproof Enclosure Manual Rev C
