Product Description

Cemtek's Model 8000 SCR NO_x and O₂ Monitor has been designed specifically to meet the challenging requirements for monitoring the inlet and outlets of selective catalytic reduction systems on coal fired combustion sources. This can be used for NO_x control, NH₃ injection control and emissions control.

Designed around a close coupled low flow - low dilution probe, the Model 8000 NO_x analyzer integrates all of the major components necessary to simultaneously measure nitric oxide and oxygen concentrations without the need for costly heated sample lines or separate instruments.

Utilizing a  NO_x chemiluminescent photo-diode detector,  no photomultiplier tubes, high voltage supply or lamps to fail provides long turn reliability. Optimization of the NO_x reaction cell eliminates the need for temperature, flow and pressure compensation. Zero drift is practically nonexistent. An ozone generator that produces ultra clean discharge is also a key feature of the Model 8000 NO_x analyzer.

A very compact zirconium oxide sensor with heater and detector cell complete on a monolithic ceramic base requires only 10W of power and is insensitive to ambient temperature swings. Our sensor uses a proprietary two-stage cell that results in an inherently linear output with excellent sensitivity and stability across its range.This results in very low zero drift and no low level calibration gas required.

The Model 8000 NO_x analyzer can be mounted directly on a duct port both before and after an SCR to measure real time NO_x and O₂ or to provide trim control of the ammonia injection process. An air condition package for applications is where high ambient temperatures are encountered at the SCR inlet. The enclosure/probe is mounted by a 4" ANSI flange. Simple probe design allows for easy removal and maintenance of filters without the need of removing any other component. 

NO_x, NO_x control, Chemiluminescent NO_x analyzer, NO control, SCR, NO_x control, NO_x process control and monitoring.