Mid-Range Gas Filter
Correlation CO Analyzer​​

with NumaView™ Software

The Model T300M CO analyzer measures low to mid 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.


The Model T300M CO analyzer measures low to mid 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 2.56 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 excellent performance from low to high range.

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 T300M 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. ​

  • Ranges: 0-5 ppm to 0-5,000 ppm, user selectable
  • Dual ranges
  • 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
  • Min: 0 – 5 ppm full scale
  • Max: 0 – 5,000 ppm full scale (selectable, dual-range supported)
Measurement Units​
  • ppm, μg/m3, mg/m3 (selectable)
Zero Noise
  • < 0.1 ppb (RMS)
Span Noise
  • < 0.5% of reading (RMS) above 20 ppm
Lower Detectable Limit
  • < 0.2 ppm
Zero Drift
  • < 0.5 ppm/24 hours
Span Drift
  • < 0.5% of full scale/24 hours
Response Time
  • < 70 seconds to 95%
  • ±1% of full scale
  • 1% of reading
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
  • 4 x digital alarm outputs
  • Multidrop RS232
  • 3 x 4 – 20mA current outputs
Operating Temperature Range
  • 5 – 40ºC
Dimensions (HxWxD)
  • 7” x 17” x 23.5” (178 x 432 x 597 mm)
  • 40 lbs (18.1 kg)

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

The following table provides a list of items that need regular maintenance to ensure your product remains in good working condition.

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(+603) 7845 4566


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