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    Q20 Series Portable Analyzer - O2 and/or CO2Q20 Series Portable Analyzer - O2 and/or CO2Q20 Series Portable Analyzer - O2 and/or CO2

Q20 Series Portable Analyzer - O2 and/or CO2

  • Intelligent
  • Durable
  • Lightweight
  • 32-bit microprocessor
  • On-board data storage
  • Available for O2, CO2, or both

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Test O2 and/or CO2 levels in packages, processes, and more!

The Q20 series offers the advantage of being incredibly lightweight and portable.  With a battery life of 12+ hours, the Q20 series is used in hundreds of applications including container spot checks, food packages, bio enclosures/incubators, and many more!

The Q20 series of analyzers features a color display, menu driven setup and calibration, a built-in programable sample pump, and on-board data collection. Everything you need to start sampling is included. The analyzer ships in a TSA-approved protective carry case, and is backed by our 2-year warranty.


model: Q20 ( Oxygen only )


model: Q21 ( CO2 only )


model: Q22 ( Oxygen and CO2 )

The latest fast response O2 and CO2 sensors

The latest fast response O2 and CO2 sensors, which allows results to be obtained in 15-25 seconds for rapid spot checks. The oxygen sensor is rated for 5 years of life, which is far better than the competition. Other analyzers utilize cheap oxygen sensors which may last 18-24 months. When required, replacement is easy and inexpensive.

The sensor is unaffected by high levels of background gases such as nitrogen.

The CO2 sensor design has a low internal volume and requires only a low sample flow of about 5 to 1000 cc/min. Our market leading CO2 sensor uses the latest in dual-wavelength NDIR measurement principles, reducing drift and allowing for a single point calibration. While the sample introduced should be clean and dry (non-condensing),a PTFE filter can be attached to the tip of the sample probe to protect from moisture and particulates.

Q21 uses a solid-state infrared sensor which has no moving parts, a compact optical cell, and microprocessor-based calibration factors using a 6th order polynomial equation to linearize the full range measurement up to 100%. Infrared CO2 measurements are inherently non-linear, especially over a high range of concentrations. The math algorithm used in the Q21 yields more accurate measurements over a much wider range of concentrations than other methods.

Oxygen Range0.00 to 100%
Oxygen Sensitivity 0.01%
O2 Resolution0.01%
Analog Output0-5V
Resolution0.01%
Accuracy+/- 1% of the reading or 0.1%, whichever is greater
Drift less than 0.4% per year
Oxygen Sensor TypeProprietary Electochemical
Response Time20 seconds to T95
O2 Sensor Lifetime4-5 Years
O2 Sensor BodyABS Resin
Sample ConnectionSample Probe
Sample MethodPump
Sample PumpInternal, draws ~5cc/sec
Pump Timing2-20 seconds, continuous, or cycling on/off, programmable
Minimum Sample Required15cc
Sampling AssemblyProbe with luer connection for filter and tri-beveled needle
Oxygen Calibration ControlsDigital Keypad Adjustment
Instrument Calibration EasyCal calibration
Exhaust portVents to air
Power Supply100 to 240 VAC, internationally compatibile
Battery OperationIncluded, internal shrink wrapped NiMH battery pack
Input Voltage100-240V, 50-60Hz
Battery Life12-16 hour runtime
MeasuresO2
Form FactorPortable
Size8in x 7in x 2in (203 x 51 x 178 mm)
Weight2 lbs (0.9kg)
Warranty2 years, parts and labor
StandardsCE, RoHS
Included Consumables400 foam seal pads, 10 luer fit needles, 10 filters
Included DocumentationOwner’s manual, NIST traceable calibration certificate
Origin of GoodsMade in the U.S.A.
Carbon Dioxide Sensor TypeSolid-state Infrared
Accuracy - Carbon Dioxide± 1% of reading, or ± 0.1% CO2 (whichever is greater)
CO2 Minimum Detection Limit0.1% (0-50% or 0-100% range) or 0.01% (0-10% or 0-20% range)
CO2 Calibration ControlsDigital Keypad
CO2 Calibration FrequencyEvery 12 months; calibration gas recommended
Expected Lifetime (oxygen)4-5 years
Analog OutputNot Available
Accuracy+/- 0.1% (from 0-20%),+/- 0.2% (from 20% to 50%),+/- 0.5% (from 50% to 100%)
Driftless than 0.4% per year
Oxygen Sensor TypeProprietary Electochemical
Response Time20 seconds to T95
O2 Sensor BodyAnodized aluminum
Sample ConnectionSample Probe
Sample MethodPump
Sample PumpInternal, draws ~5cc/sec, with 2-12 second adjustable timer (on side of unit)
Pump Timing2-20 seconds, continuous, or cycling on/off, programmable
Minimum Sample Required10cc
Sampling AssemblyProbe with male luer connection for side-port needle, PTFE tubing
Oxygen Calibration ControlsDigital Keypad Adjustment
Instrument CalibrationEasyCal calibration
Exhaust portVents to air
Power Supply100 to 240 VAC, internationally compatibile
Battery OperationIncluded, internal shrink wrapped NiMH battery pack
Input Voltage100-240V, 50-60Hz
Battery Life12-16 hour runtime
Measures: O2, CO2CO2
Form FactorPortable
Size8in x 7in x 2in (203 x 51 x 178 mm)
Weight2 lbs (0.9kg)
Warranty2 years, parts and labor
StandardsCE, RoHS
Included ConsumablesVaries (depending on application)
Included DocumentationOwners manual (includes operating instructions with detailed calibration instructions, calibration certficate, precautions),NIST calibration certificate
Origin of GoodsMade in the U.S.A.
Carbon Dioxide Sensor TypeSolid-state Infrared
Accuracy - Carbon Dioxide± 1% of reading, or ± 0.1% CO2 (whichever is greater)
CO2 Minimum Detection Limit0.1% (0-50% or 0-100% range) or 0.01% (0-10% or 0-20% range)
CO2 Calibration ControlsDigital Keypad
CO2 Calibration FrequencyEvery 12 months; calibration gas recommended
Expected Lifetime (oxygen)4-5 years
Oxygen Range0.00 to 100%
Oxygen Sensitivity0.01%
O2 Resolution0.01%
Analog OutputNot Available
Resolution0.01% or 0.1% (user selectable)
Accuracy+/- 0.1% (from 0-20%),+/- 0.2% (from 20% to 50%),+/- 0.5% (from 50% to 100%)
Driftless than 0.4% per year
Oxygen Sensor TypeProprietary Electochemical
Response Time20 seconds to T95
O2 Sensor Lifetime4-5 Years
O2 Sensor BodyAnodized aluminum (CO2) and ABS Resin (O2)
Sample ConnectionSample Probe
Sample MethodPump
Sample PumpInternal, draws ~5cc/sec, with 2-12 second adjustable timer (on side of unit)
Pump Timing2-20 seconds, continuous, or cycling on/off, programmable
Minimum Sample Required15cc
Sampling AssemblyProbe with male luer connection for side-port needle, PTFE tubing
Oxygen Calibration ControlsDigital Keypad Adjustment
Instrument CalibrationEasyCal calibration
Exhaust portVents to air
Power Supply100 to 240 VAC, internationally compatibile
Battery OperationIncluded, internal shrink wrapped NiMH battery pack
Input Voltage100-240V, 50-60Hz
Battery Life12-16 hour runtime
Measures O2, CO2
Form FactorPortable
Size8in x 7in x 2in (203 x 51 x 178 mm)
Weight2 lbs (0.9kg)
Warranty2 years, parts and labor
StandardsCE, RoHS
Included Consumables200 foam septas, 2 luer fit needles, 2 particulate filters, 2 liquid block filters
Included DocumentationOwners manual (includes operating instructions with detailed calibration instructions, calibration certficate, precautions),NIST calibration certificate
Origin of GoodsMade in the U.S.A.