PIDs can measure Volatile Organic Compounds (VOCs) to very low concentrations.
Considered the gold standard for VOC measurement, Alphasense PIDs are
compact and low power, with recently improved electronics and longer
lamp life. An extended family of lamps now include better BTEX and
chlorinated VOC detection. These sensors are pin-replaceable with the
4P90 pellistor.
The Alphasense PID sensor is offered in two
models, A12 and AH2. They are virtually insensitive to humidity
changes, providing unparalleled performance in a variety of
applications.
PID-A12 has a linear dynamic range of 50 ppb to 6,000 ppm (Isobutylene).
PID-AH2 has a linear dynamic range of 1 ppb to 50 ppm (Isobutylene).
The sensors include a detector with lamp driver, amplifier circuitry,
and user replaceable electrode stack, 10.6 eV lamp and particulate
filter.