Model 902D O2 / CO2 Headspace Analyzer

The Quantek Model 902D is a benchtop oxygen and CO2 headspace analyzer, primarily used for gas flushed food packages. Achieve accurate oxygen and carbon dioxide measurements in 20-25 seconds.
This headspace analyzer contains an internal pump to draw in sample from your package and display O2 and CO2 concentration results in 30 seconds.

The expected oxygen sensor life is typically 5 years, unlike other analyzers with a sensor that last 1-2 years, reducing total cost of ownership, and analyzer downtime.


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SKU: Model 902D Categories: ,
Lead Time: 2-4 business days


The Model 902D analyzer sample probe is tipped with a particulate filter and luer fit syringe needle with side-port holes to prevent plugging. When the pump is activated, sample is drawn through the probe and tubing and then to the oxygen sensor.

The pump is electronically timed to draw in the precise amount of sample required for the analysis, and then turns itself off after the pre-set sampling time (5 to 10 seconds). The O2 and CO2 concentration is read on the display within 20-25 seconds.


The solid-state infrared CO2 sensor has no moving parts, a compact optical cell, and microprocessor-based calibration factors using a 6th order polynomial equation and 32 bit processor to linearize the full range measurement up to 100%.

Both sensors are unaffected by high levels of background gases such as nitrogen.

The expected life of the CO2 sensor is theoretically unlimited, as it contains no moving parts.

The expected electrochemical O2 sensor life is typically 5 years, unlike other analyzers with an electrochemical sensor that last 1-2 years.


The rugged miniature diaphragm pump has electronically controlled timing function to operate only when sampling. It provides high flow rate and long operating life.

The pump is electronically timed to draw in the amount of sample required for the analysis, and then turns itself off after the pre-set sampling time (5 to 10 seconds).


If equipped with the optional battery, the 902D can within transported to your facility to conduct testing with no AC outlet available. Totally sealed, long-life battery (optional) accepts full or partial charging cycle. Charger module plugs into standard 115V outlet for charging or continuous operation, though it can accept 100-240V for worldwide use.


Micro-processor based electronics provide sensor signal processing, battery charging, pump timing and on/off control for high accuracy and reliability with minimal component use and reduced size and cost.

Carbon Dioxide Sensor Type Solid-state Infrared
Accuracy - Carbon Dioxide Accuracy (for 0-100% range) ± 1% of reading, or ± 0.2% CO2 (whichever is greater), Accuracy (for 0-20% range) ± 1% of reading or ± 0.1% CO2 (whichever is greater)
CO2 Minimum Detection Limit 0.1% (0-100% range) or 0.01% (0-20% range)
CO2 Calibration Controls Potentiometer SPAN adjustment for CO2.
CO2 Calibration Frequency Every 12 months; calibration gas recommended.
Expected Lifetime (oxygen) 4-5 years
Oxygen Range 0.0 to 100%
Oxygen Sensitivity 0.1% O2
O2 Resolution 0.1% O2 (optional .01%)
Analog Output Not Available
Accuracy : +/- 1% of reading; +/- 0.1% absolute below 10.0%
Drift less than 0.4% per year
Oxygen Sensor Type Proprietary Electrochemical
Response Time 25 seconds to T95
O2 Sensor Lifetime 4-5 Years
O2 Sensor Body ABS Resin
Sample Connection Sample Probe
Sample Method Pump
Sample Pump Miniature diaphragm type with ~5cc/sec flow
Pump Timing 2-12 second adjustable pump time, potentiometer on back of analyzer
Minimum Sample Required 15cc
Sampling Assembly Probe with female luer connection for filter and needle, low volume PTFE tubing
Oxygen Calibration Controls SPAN adjustment, zero adjustment
Instrument Calibration Calibrates with room air; coarse SPAN adjustment on back; fine span adjustment on side; ZERO adjustment on side (calibration gas recommended for CO2)
Exhaust port Vents to air
Power Supply 100-240V (50-60Hz) Charger included, with US or international interchangeable plug adapter (upon request)
Backup Power Optional 12V internal battery pack
Battery Operation Optional
Input Voltage 100-240V, 50-60Hz
Battery Life 8-12 hours before recharging
Measures: O2, CO2 O2, CO2
Form Factor Benchtop
Size 9.8W x 4H x 10L in. (249 x 102 x 254 mm)
Weight 9.8 lb. (4.4 Kg)
Warranty 2 years, parts and labor
Standards CE, RoHS
Included Consumables 200 foam septas, 2 luer fit needles, 2 particulate filters, 2 liquid block filters
Options Battery, 0.01% resolution for O2
Included Documentation Owners manual (includes operating instructions with detailed calibration instructions, calibration certficate, precautions), NIST calibration certificate
Origin of Goods Our products are manufactured in the U.S.A.
Products by Gas Oxygen and CO2
Products by Applications Headspace / Package
  • Built-in pump, sample probe.
  • Starter pack of 200 foam septas
  • 2 needles.
  • 2 small moisture filters,
  • 2 small moisture blocking filters,
  • Power supply / charger (for analyzers with optional internal battery) – (International compatible 100-240V)
  • Certificate of Calibration (traceable to NIST standards)

Optional Items

  • Optional Internal battery pack (NiMH), capable of 2100 cycles
  • Optional upgrade oxygen LCD to .01%”