Encyclopedia of Environmental Science and Engineering, Volume I and II

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