Model T300 with NumaView™ Software

​Gas Filter Correlation Carbon Monoxide Analyzer​

T300 Product Sheet

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The Model T300 measures low ranges of carbon monoxide by comparing infrared energy absorbed by a sample to that absorbed by a reference gas according to the Beer-Lambert law. 

Using a Gas Filter Correlation Wheel, a high energy IR light source is alternately passed through a CO filled chamber and a chamber with no CO present.  The light path then travels through the sample cell, which has a folded path of 14 meters.  The energy loss through the sample cell is compared with the span reference signal provided by the filter wheel to produce a signal proportional to concentration, with little effect from interfering gases within the sample.  This design produces excellent zero and span stability and high signal to noise ratio, allowing extreme sensitivity. 

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 T300 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​.​​


​File ​​Size
T300 Ma​nual
​T300 Specifications​
​T Seri​es Br​ochure


  • Ranges: 0-1 ppm to 0-1000 ppm, user selectable
  • Selectable ranges, with dual range capability
  • 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
  • Comprehensive internal data logging with programmable averaging periods
  • Ability to log virtually any operating parameter
  • Two-year warranty
  • Five-year warranty on GFC wheel​


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)
Zero Noise < 0.02 ppm (RMS)
Span Noise < 0.5% of reading (RMS) above 5 ppm
Lower Detectable Limit 0.04 ppm
Zero Drift < 0.1 ppm/24 hours
Span Drift < 0.5% of full scale/24 hours
Lag Time  10 seconds
Rise/Fall Time < 60 seconds to 95%
Linearity 1% of full scale
Precision 0.5% of reading above 5 ppm
Sample Flow Rate  800 cc/min ±10%
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
8 x analog inputs (0-10V, 12-bit)
4 x digital alarm outputs
Multidrop RS232​​
3 x 4 - 20mA current outputs
Operating Temperature Range 5 - 40ºC operating, 
10-40ºC (US EPA Equivalency)​
Dimensions (HxWxD) 7” x 17” x 23.5” (178 x 432 x 597 mm)
Weight 40 lbs​​ lbs (18 kg)

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

US EPA: EQSA-1093-093
EU: EN14626 TÜV Rheinland
QAL1 Certified: EN15267
MCerts: Sira MC050069/07
CNEMC: 质(认)字 No. 2015-028 Report ​​


​The following table provides a list of items that  need regular maintenance to ensure your product remains in good working condition.  Refer to the operations manual for more information.




Cal Check Required

Particulate Filter


Weekly or As Needed


Verify Test Functions

Record and Analyze

Weekly or after any Maintenance or Repair


Pump Diaphragm




Perform Flow Check

Check Flow



Perform Leak Check

Verify Leak Tight

Annually or after any Maintenance or Repair


Pneumatic lines

Examine and Clean

As Needed

Yes if cleaned



As Needed

Only if cover removed​