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​​Model N300
Gas Filter Correlation C​O​​​​ Analyzer
with NumaView™ Software​



092910300E - MANUAL, USER, N300, N300M.pdfN300/N300M with NumaView™ Software Manual13777 KB
22-002A REST API Tutorial For Numaview - CO.pdfREST API Tutorial for NumaView Instruments584 KB
NVS Remote Manual - 08492.pdfNumaView™ Software Remote User Guide867 KB
SAL000076K - Environmental Instruments Overview.pdfEnvironmental Instruments Overview610 KB
SAL000119B - N300.pdfN300 Specifications987 KB
Teledyne API N Series Ambient Brochure_17-Dec-2021.pdfN Series Instruments for Ambient Air Monitoring Brochure11385 KB
Teledyne-N-Series-CEMS-Brochure-Final-01-14-21.pdfN Series Instruments for Continuous Emissions Monitoring (CEM) Brochure11049 KB



Ranges Min: 0 - 1 ppm full scale
Max: 0 - 1,000 ppm full scale (selectable, dual-range supported)
Measurement Units ppb, ppm, μg/m3, mg/m3 (selectable)
​Response Time
​< 70 seconds to 95%
​Sample Flow Rate
​​800 cc/min ±10%
Zero Noise​
< 0.02 ppm (RMS)
Span Noise < 0.5% of reading (RMS) above 5 ppm
Lower Detectable Limit < 0.04 ppm
​0.5% of reading above 5 ppm
​1% of full scale
Zero Drift
< 0.1 ppm/24 hours
Span Drift < 0.5% of full scale/24 hours
Included I/O 1 x Ethernet (TCP/IP)
1 x RS232
2 x front panel USB device ports​
Optional I/O Universal Analog Output Board includes (all user-definable):
4 x Isolated Voltage Outputs (5V, 10V; user-selectable)
3 x Individually Isolated Current Outputs (4-20mA)
​Digital I/O Expansion Board includes:
3 x Isolated Digital Input Controls
5 x Isolated Digital Output Controls (user-definable)
3 x Form C Relay Alarm Outputs (user-definable)​
​40 lbs (18.1 kg)
Dimensions (HxWxD)
7” x 17” x 24.3” (178 x 432 x 617 mm)
​​Operating Temperature
​0 - 40°C (with US EPA Approval)
​100V-240V, 50/60 Hz, Typical consumption 115W​​

Specifications are subject to change without notice.
All specifications are based on constant conditions.​
​US EPA: RFCA-1093-093


  • Single or dual range capability
  • Customizable alerts and continuous self-checking
  • Wide operating temperature range
  • Internal DC-powered vacuum pump
  • 5-year warranty on Gas Filter Correlation (GFC) wheel
  • Integrated Oxygen (O2) or Carbon Dioxide (CO2) sensor (optional)
  • Internal zero and span valves (optional)
  • Optional 47mm membrane​ or longlife sample particulate filter


The Model N300 is a microprocessor-controlled analyzer based on the Beer-Lambert law that is used to determine the concentration of carbon monoxide (CO) in a sample gas.

The N300 uses Gas Filter Correlation (GFC) to overcome the interfering effects of various other gases (such as water vapor) that also absorb Infrared (IR) light. The analyzer passes the IR light beam through a spinning wheel made up of two separate chambers: one containing a high concentration of CO known as the reference, and the other containing a neutral gas known as the measure. The concentration of CO in the sample chamber is computed by taking the ratio of the instantaneous measure and reference values and then compensating the ratio for sample temperature and pressure.

Instrument functions and controls are managed through a series of integrated microprocessor-controlled modules utilizing a simple and reliable CAN Bus communications architecture. Each module is independently assembled and calibrated allowing easy and fast field replacement to maximize instrument uptime. The long-life sample fi lter option further improves efficiency with a ~6 months exchange interval in ambient air quality monitoring applications.

Intuitive operation and calibration of all N Series products is achieved through the NumaView™ Software interface. The graphical user interface (GUI) is customizable, giving the user fast and efficient access to instrument status, as well as measurement data and diagnostic parameters in either numeric or graphical form. NumaView™ Remote Software (included at no charge) provides the same virtual interface and complete instrument control, as well as access to the instrument's large internal data storage buff​er from a remote PC or tablet.​