Product/Service
Model 400 CLD Analyzer
Source:
The model 400 CLD analyzer utilizes the chemiluminescence principle for
analyzing the NO or NOx concentration within a gaseous sample.
The model 400 CLD analyzer utilizes the chemiluminescence principle for
analyzing the NO or NOx concentration within a gaseous sample. In the NO
mode, the method is based upon the chemiluminescent reaction between ozone
and nitric oxide (NO) yielding nitrogen dioxide (NO2) and oxygen.
Approximately 15% of the NO2 produced from this reaction is in an
electronically excited state. The transition from this state to a normal
state produces light of an intensity proportional to the mass flow rate of
NO2 into the reaction chamber. The light is measured with a photodiode and
associated amplification electronics. In the NOx mode, NO plus NO2 is
determined as above, however, the sample is first routed through the
internal converter which converts the NO2 in the sample to NO. The resultant
reaction is then directly proportional to the total concentration of NOx.
The analyzer is designed to continuously measure the total concentration of
oxides of nitrogen within a gaseous sample. The gaseous sample can be
ambient air, exhaust gases from an internal combustion engine, or exhaust
gases from a combustion process. A dry measurement method may be desirable
for the direct calculation of mass emissions by adding the optional sample
chiller. It is also designed to meet the specific requirements of the U.S.
EPA Federal Register, Title 40. Applications include stack gases (CEM),
scrubber efficiency, process chemical gas analysis, personnel safety, and
power plant stack de-nitrification. Features include:
- Sensitivity to 3 ppb NO/NOx
- Automatic high voltage shut-down with loss of ozone air
- Complete digital presentation including sample and air pressure (no gauges)
- Five ranges
- Remote operation capability
- Dry measurement (optional)
, 1238 West Grove Avenue, Orange, CA 92865-4134. Tel: 714-974-5560; Fax: 714-921-2531.
