Chemiluminescence NH3 Analyzer: Model 201E0 pages
MODELS 201E
Chemiluminescence NH3 Analyzer
for Ambient Air Quality Monitoring
The Model 201E analyzer measures ambient ammonia in
selectable ranges from 0-50 ppb to 0-2,000 ppb using
the chemiluminescence principle and a Teledyne API
designed external ammonia converter and sampling
system. Ranges are user selectable in 1 ppb increments
and auto ranging is available.
Ammonia is difficult to measure accurately because of a
tendency to be absorbed into other materials. The
“stickiness” of the gas results in slow response times and
inaccurate concentration values. The Model 201E has
0-50 ppb to 0-2,000 ppb, user selectable
been designed to overcome the problems of ammonia
Microprocessor controlled
gas analysis through increased flow, minimum surface
Multi-tasking software allows viewing of test
variables during operation
area and selected construction materials.
Continuous self checking with warning
alarms
converter, which converts NH3 and other compounds to
In operation, sample gas is passed through the 501NH
NO, producing the total oxides of nitrogen (TNX). In the
External converter
next cycle the sample is routed through a molybdenum
Designed to optimize response times
converter which converts nitrogen oxides (less NH3) to
– Minimal surface area in contact with
sample
NO, producing the Tn reading. The difference between
– low absorption wetted parts
– heated zero/span manifold
these readings (TNX – TN = NH3) provides a reading
proportional to the NH3 concentration. The analyzer
software represents these values in the readout, and
Continuous Automatic Zero correction
Adaptive signal filtering optimizes response
time
independent outputs are available for each of these
values.
The Model 201E combines the performance advantages
Temperature & pressure compensation
Internal data logging with 1 min to 24 hour
averages
of Teledyne API’s Model 200E NO/NOX analyzer with a
converter sampling system designed specifically for this
application to produce the most accurate and
dependable NH3 measurement system available today.
FREE Customer Support by telephone and email for the life of the instrument
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