for personal sampling,fasten the (uncapped) open-face cassette to the worker's lapel. the open face should be oriented downward .
NOTE the cowl should be electrically grounded during area sampling , especially under conditions of low relative humidity.
use a hose clamp to secure one end of the wire (equipment, item3) to the monitor's cowl. connect the other end to an earth ground (i.e.,cold water pipe).