Cemtek Instruments offers a complete line of combustion analyzer products and compliance monitoring systems to streamline efficient process control. All Cemtek instrument's are carefully selected to meet the specific requirements of our customer's application. Instruments are field tested and fully supported by our team of field service and system engineers.
|
Cemtek's Model 8000 SCR NOx/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.
Designed around a close coupled enclosure, the Model 8000 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 modified NOx optical detector with no photomultiplier tubes, high voltage supply or lamps to fail provides long turn reliability. Optimization of the NOx 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.
A very compact zironcium oxide sensor with heater and detector cell complete on a momolithic 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 it's range. This results in very low zero drift and no low level calibration gas required.
The Model 8000 can be mounted directly on a duct port both before and after an SCR to measure real time NOx and O2 or to provide trim control of the ammonia injection process. An air condition package for outdoor application is available or can be used when high ambient temperatures ae encountered at the SCR inlet. The entire enclosure/probe is mounted by a 4" ANSI flange. Simple probe design allows for easy remova and maintenance of filters without the need of removing any other component.
|
PRODUCT SPECIFICATIONS
NOx O2
Measurement Technology: Chemiluminescence Zirconium Oxide cell
Solid state detection
Range (FS adjustable): 5 to 1000 PPM 5-25%
Linearity (FS): < 2.0% < 1.0%
Zero Calibration Drift: +/- 0.2 PPM +/- 0.2 PPM
Zero Noise: <0.02 PPM <0.02%
Span Calibration Drift: +/- 2.0% +/- 0.2%
Span Noise: < 0.25% of reading < 0.02%
Interference (sum of all): < 2.0% measured value < 2.0%
Response Time: < 30 seconds at T95 < 30 seconds at T95
System Requirements:
Power: 115VAC, 150 Watts @ 2 A
Air: 2 CFM @ 60 PSI
Weight: 50 lbs approx
Size Dimensions: 22” x 16” x 12” NEMA 4 Enclosure
Outputs: Isolated 4-20mA per gas measured
|
|
