Carbon Compound Instruments
​​​​​​​​​​​​​​​​​​​​​ Conta​​​ct us
Sales Contacts
Request a Quote
Terms & Conditions
​​ ​

​Model N300M
Mid-Range Gas Filter Correlation CO 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
SAL000120A - N300M.pdfN300M Specifications994 KB
Teledyne-N-Series-CEMS-Brochure-Final-01-14-21.pdfN Series Instruments for Continuous Emissions Monitoring (CEM) Brochure11049 KB



Ranges Min: 0 - 5 ppm full scale
Max: 0 - 5,000 ppm full scale (selectable, dual-range supported)
Measurement Units ppm, mg/m3 (selectable)
​Response Time
​< 70 seconds to 95%
​Sample Flow Rate
​​800 cc/min ±10%
Zero Noise​
< 0.1 ppm (RMS)
Span Noise < 0.5% of reading (RMS) above 20 ppm
Lower Detectable Limit < 0.2​ ppm
1% of reading
±​ ​1% of full scale
Zero Drift
< 0.5 ppm/24 hours
Span Drift < 0.5% of reading​/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 - 40ºC

Specifications are subject to change without notice.
All specifications are based on constant conditions.​
​100V-240V, 50/60 Hz, Typical consumption <150W


  • Single or dual range capability
  • Customizable alerts and continuous self-checking
  • Wide operating temperature range
  • Internal DC-powered vacuum pump
  • Integrated Oxygen (02) or Carbon Dioxide (CO2) sensor (optional)
  • 5-year warranty on Gas Filter Correlation (GFC) whe​el​


The Model N300M is a microprocessor-controlled analyzer used to determine the concentration of carbon monoxide (CO) in a sample gas. The analysis method is based on the Beer-Lambert law.

The N300M uses Gas Filter Correlation (GFC) to overcome the interfering effects of various other gases (such as water vapor) that also absorb IR. The analyzer passes the IR 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.

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 buffer from a remote PC or tablet.​