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The Model 309A Series Portable CO2 and O2 Analyzer is a rugged, fast-responding, and accurate instrument for conveniently monitoring the controlled atmospheres in food storage rooms. The standard range of the analyzer is 0-10% CO2 and 0-25% O2. The Model 309A series utilizes a single cell infrared detector for CO2 and a customer-replaceable electrochemical sensor for O2. Neither sensor is affected by water vapor or other gas vapors in the sample gas. The O2 sensor typically lasts 3-4 years. The CO2 detector is not consumed during use.

In operation, a built-in sample pump draws in the gas sample through the sample hose, filters, and flow meter, then on to the CO2 and O2 detectors. You can walk around with the instrument or run tubing to it from the C/A room. The gas readings are displayed on a bright touch-screen display.

A rechargeable lithium ion battery provides enough power for about 8 hours of continuous operation and the analyzer can be used while it is being recharged. The 309K series case is small but rugged and dust & water resistant when closed. Stack temperature measurement and built-in printer that also shows date & time are optionally available on any model.
Unit of Measure

Specifications

Method of Detection

 N/A Microprocessor based infrared detector for CO2

Ranges Available

 N/A 0-3000, 0-5000 or 0-10,000 PPM; 0-2%, 0-5%, 0-10%, 0-20%, 0-50% or 0-100% CO2. Other ranges available.

Resolution

 N/A 0.1% CO2 on % versions; 10 PPM CO2 on PPM versions

Accuracy & Repeatability

 N/A Within ±2% full scale

Drift

 N/A Within 1% full scale per 8 hours of continuous operation

Response Time (T-90)

 N/A 30 - 40 seconds

Ambient Temperature Range

 N/A 4 to 49 ºC40 to 120 ºF

Linearity

 N/A Better than 1.0% of full scale

Size & Weight

 N/A approx. 26 x 18 x 13 cm @ 3.4 kg (10" x 7" x 5" @ 7.5lbs)

Power

 N/A 115 VAC 60 Hz for recharging (220VAC / 50Hz also available)

Output Options

 N/A 4-20mA

Hazardous Area Rating Options

 N/A General Purpose, Non-Hazardous

Applications

N/A For checking carbon dioxide (CO2) content in mushroom growing rooms, incubators, natural gas, controlled atmosphere storage rooms, welding gas mixtures, and other process applications.

Features

N/A

  • Rugged design that is easy to operate
  • Fast warm-up and response
  • Solid state infrared detector
  • Digital readout meter
  • Modular layout that is easy to maintain
  • Rechargeable battery operation
  • Built in sample pump, filter, and flowmeter
  • Suitcase cabinet, weather-proof when closed

Options

N/A

  • Recorder output - 4-20mA
  • Sample pre-cooler for hot samples
  • Condensate removal for wet applications
  • On-board data-logging to USB stick

Calibration

N/A

  • Air for zero (except low range models which have a CO2 scrubber for zeroing).
  • Analyzed CO2 cal gas for span.

Unique Applications

N/A

    All Nova analyzers are built using proven technologies and techniques. If this product does not suit your application, please contact Nova. In many cases, we are able to build an analyzer specific to your needs.
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