Zetian - Model AM-5302 - Ammonia Analyzer
From Ambient Air Quality Monitor System
Ammonia analyzer adopts chemiluminescence principle to detect ammonia gas in ambient air, equipped with ammonia reformer and sampling system. The range can be selected between 0-500ppb and 0-2000ppb. The ammonia analyzer is able to reduce ammonia absorption through control of internal sampling gas flow processing of sampling gas path to ensure the response time as well as accurate control of concentration.
Principle
During operation process, sample gas passes through external reformer first. The analyzer converts NH3,into NO under effect of catalyst. With the original NO in air, it will disply total concentration value of NO. In next cycle period, the analyzer measures NO concentration in air. The difference between the above two values is the concentration of NH3.