46 AIR POLLUTION INSTRUMENTATION
AIR-TIGHT
PUMP
MAIN VALVE
VACUUMGAUGE
BY-PASS VALVE
IMPINGERS
THERMOMETERS
ORIFICE
ORIFICE MANOMETER
DRY GAS METER
VACUUM
LINE
CHECKVALVE
THERMOMETER
FLEXIBLETUBING
PROBE
EXTENSION
STACKWALL
PITOT MANOMETER
REVERSE-TYPE
PITOT TUBE
SAMPLINGNOZZLEIN-STACKFILTERHOLDER
TEMPERATURE
SENSOR
IMPINGER TRAIN OPTIONAL MAY BE REPLACED
BY AN EQUIVALENT CONDENSER
ICE BATH
* SUGGESTED (INTERFERENCE-FREE) SP
ACINGS
TYPE-S
PITOT TUBE
IN-STACK
FILTER HOLDER
TEMPERATURE
SENSOR
z^ >
7.6 cm (3 in.)*
x^ =
y^
>^
1.9 cm (0.75 in.)*
x y
z
FIGURE 2
Method 17 schematic.
C001_004_r03.indd 46C001_004_r03.indd 46 11/18/2005 10:12:45 AM11/18/2005 10:12:45 AM