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​Model T300U
​​with NumaView™ Software

​Gas Filter Correlation CO Analyzer​





  • Ranges: 0-100 ppb to 0-100 ppm, user selectable
  • Dual ranges and auto ranging
  • Large, vivid, and durable color graphics display with touch screen interface
  • Ethernet, RS-232, and (optional) USB com ports
  • Front panel USB connections for peripheral devices and firmware upgrades
  • 8 analog inputs (optional)
  • Adaptive signal filtering optimizes response time
  • Temperature & pressure compensation
  • GFC wheel guaranteed for 5 years
  • Comprehensive internal data logging with programmable averaging periods
  • Ability to log virtually any operating parameter
  • Two-year warranty


083730300C - MANUAL T300 T300M T300U.pdfT300/T300M/T300U with NumaView™ Software Manual15180 KB
22-002A REST API Tutorial For Numaview - CO.pdfREST API Tutorial for NumaView Instruments584 KB
ESD Fundamentals - 04786.pdfFundamentals of Electro-Static Discharge (ESD)216 KB
NVS Remote Manual - 08492.pdfNumaView™ Software Remote User Guide867 KB
SAL000055H - T300U.pdfT300U Specification4963 KB
SAL000055I-CN T300U.pdfT300U规格 (Chinese Specification)5170 KB
SAL000076K - Environmental Instruments Overview.pdfEnvironmental Instruments Overview610 KB
SAN18-0001A - APPNOTE CO CEMS.pdfT300 Series CEMS CO Application Note444 KB
T SERIES_6PG.BROCHURE_2018_web.pdfT Series with NumaView™ Software Brochure9567 KB


Ranges Min: 0 - 100 ppb full scale
Max: 0 - 100 ppm full scale (selectable, dual-range supported)
Measurement Units ppb, ppm, μg/m3, mg/m3 (selectable)
Zero Noise < 10 ppb (RMS)
Span Noise < 0.5% of reading (RMS) above 2.5 ppm
Lower Detectable Limit  < 20 ppb​
Zero Drift < 20 p​​pb/24 hours​​
Span Drift < 0.5% of reading ​​/24 hours​​ above 5 ppm​
 Response Time < 70 seconds to 95%​
Linearity 1% of f​ull scale
Precision 0.5% of reading
Sample Flow Rate 1800 cc​/min ±20%​​​​
Power Requirements 100V-120V, 220V-240V, 50/60 Hz
Analog Output Ranges 10V, 5V, 1V, 0.1V (selectable)
Recorder Offset ±10%
Included I/O 1 x Ethernet: 10/100Base-T
2 x RS232 (300-115,200 baud)
2 x USB device ports
8 x opto-isolated digital outputs
6 x opto-isolated digital inputs
4 x analog outputs
Optional I/O 1 x USB com port
1 x RS485
4 x digital alarm outputs
Multidrop RS232
3 x 4 - 20mA current outputs
Operating Temperature Range 5 - 40ºC 
10 - 40°C (with US EPA Equivalency)​​
Dimensions (HxWxD) 7” x 17” x 23.5” (178 x 432 x 597 mm)
50​​ lbs (22.7 kg) ​
​​​ Certifications
​US EPA: RFCA-1093-093

Specifications are subject to change without notice.
All specifications are based on constant conditions.​​


The Model T300U Trace-level CO analyzer has been developed specifically to address the challenges of low level monitoring as required, for example, in the US NCore network.  Using IR absorption with a Gas Filter Correlation Wheel, the T300U is designed to allow ultra-sensitive CO measurements while still meeting the requirements for use as a US EPA compliance analyzer.

The optical bench is enclosed in a temperature controlled oven, dramatically decreasing instrument noise and drift.  The objective and field mirrors in the sample cell are gold plated to maximize signal to noise performance, while a temperature-controlled Nafion dryer on the inlet minimizes water interference caused by ambient humidity changes.  Periodically, the T300U seamlessly corrects its baseline by routing the sample through a heated catalytic CO scrubber.  This Auto Reference function corrects zero drift and reduces the effect of interferences.

All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/O, and built-in data acquisition capability.  All instrument set up, control and access to stored data and diagnostic information is available through the front panel, or via RS232, Ethernet, or USB com ports, either locally or by remote connection.

The Model T300U comes with NumaView™ Software. NumaView™ Remote PC Software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView™ Software. ​