The
California Analytical Instruments, Inc. NOxBox system has been
specifically designed for harsh environmental conditions frequently
found in outdoor selective catalytic reactor applications. The analyzer
system is housed in a Nema 4 enclosure with a front lockable door. The
enclosure contains a heating and cooling system to maintain a constant
internal temperature for the gas analyzer(s) and interface equipment
regardless of outside environmental effects. The SCR exhaust is
obtained directly through a heated sample line, after the optional
heated filter.
The NOxBox contains the latest CAI digital heated
chemiluminescent analyzer with an optional paramagnetic oxygen analyzer
and water removing sample conditioning system. Complete automatic
diagnostics and alarms are standard with digital output to control
systems, including TCP/IP.
Designed as a close coupled system,
the entire sample train including the pump, is maintained above
100°C.
This direct wet measurement technique greatly simplifies sample
conditioning. The enclosure houses all the components necessary to
perform extremely fast, continuous NO/NOx measurement of the SCR
output. A zero air generator is included to provide pure air for the
NOx analyzer’s ozone generator and zero air for calibration
