The Model 309A Series Portable CO2 and O2 Analyzer is a rugged, fast-responding, and accurate instrument for conveniently monitoring the atmosphere in a fruit storage C/A room. The standard range of the analyzer is 0-10% CO2 and 0-25% O2. Other ranges are available. 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 sensormore typically lasts 3-4 years.
In operation, a built in sample pump draws in the gas sample through the sample hose, filter/condensate trap, secondary filter and flow meter then on to the CO2 and O2 detectors. The gas readings are then displayed on LCD digital meters which have switchable backlights for use in dark areas.
A rechargeable battery provides enough power for about 8 hours of continuous operation and the analyzer can be used while it is being recharged. A red LED tells when to recharge and a green LED verifies that it is receiving recharging power. The recharger is included. less
In operation, a built in sample pump draws in the gas sample through the sample hose, filter/condensate trap, secondary filter and flow meter then on to the CO2 and O2 detectors. The gas readings are then displayed on LCD digital meters which have switchable backlights for use in dark areas.
A rechargeable battery provides enough power for about 8 hours of continuous operation and the analyzer can be used while it is being recharged. A red LED tells when to recharge and a green LED verifies that it is receiving recharging power. The recharger is included. less
Unit of Measure
Method of Detection |
N/A Electrochemical O2 sensor Infrared detector for CO2 |
Ranges Available |
N/A 0-25% O2 (Other ranges available) 0-3000 PPM; 0-5000 PPM; 0-1%; 0-10%; 0-20%; 0-50%; 0-100% CO2 |
Resolution |
N/A 0.1% on % versions or 10 PPM 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 O2 less than 10 seconds; CO2 less than 30-40 seconds to T-90 |
Ambient Temperature Range |
N/A 4 to 49 ºC40 to 120 ºF |
Linearity |
N/A ±1.0% of full scale |
Size & Weight |
N/A K Style: 14" L x 10 1/2" W x 6" H @ 12 lbs (36 x 27 x 15 cm @ 5.5 kg) WP Style: 10" L x 7 1/2" H x 6 1/2" D @ 8 lbs (25.5 x 19 x 26.6 cm @ 3.6 kg) |
Power |
N/A AC/DC Operation, 115 VAC, 60 Hz for recharging |
Output Options |
N/A 0-1 VDC 4-20 mA |
Unique Applications |
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Primary Gas to be Measured |
N/A Carbon Dioxide (CO2) Oxygen (O2) |
Industry Type |
N/A C/A Room Monitoring |
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