Model 3290​​​

Percent Oxygen Analyzer​​​​


​The 3290 analyzer proves that good things come in small packages. This microprocessor based unit offers high accuracy, easy use and all the standard features demanded by the end-user in a compact, budget priced design. Membrane command switches and a large, four digit LED display make setup and operation clear and quick.

Range Options

Depending on the application, this unit can be configured to use a Micro-fuel Cell sensor or zirconium oxide sensor, assuring the highest accuracy. With a long expected sensor life, the 3290 is as inexpensive to maintain as it is to purchase. It has a sensor failure alarm which takes away the worry and work out of the end-user’s hands. The ranges are field configurable between 1% and 25% oxygen with 0-25% oxygen calibration. An optional full scale range is available up to 100% and auto-ranging comes standard on this model. Two programmable failsafe concentration alarms (one high and one low set-point) provide the versatility to satisfy nearly any requirement.


A standard 0-10 VDC output provides range identification, while the oxygen concentration is output through 4-10 mADC negative ground and 0-10 VDC negative ground signals. An optional unidirectional RS-232 serial interface is incorporated to relay information to a host computer for remote monitoring of all functions. Configuration information and analysis results are as close as your personal computer.

Oxygen Sensor

An SP76 compliant oxygen sensor for trace and percent ranges is offered with the 3290. This can substantially reduce size, as compared to the alternative that requires discrete tube cut and connected through fittings of various components like sensors, pressure regulators, valves, etc. Additionally, it is a building block, plug-and-play approach that makes even the most inexperienced assembler or designer an immediate expert.

Optional Configurations

  • Power requirement: 10-36 VDC

  • Zirconium oxide sensor


  • Principle: Oxygen specific * electrochemical transducer

  • Sensor: Micro-fuel Cell Class E-2 (P/N: C-57283-E2)

  • Ranges: Two ranges with auto-ranging capability

    • Field configurable between 0-1% and 0-25% O2

    • Calibration range: 0-25% O2

  • Signal Outputs:

    • For oxygen concentration: 4-20 mADC negative ground and

    • 10 VDC signals

    • For range identification: 0-10 VDC signal

  • Alarm Outputs:

    • One high alarm and one low alarm set points with corresponding relay contacts

    • One sensor failure alarm

  • Display: 4 digit LED

  • Power requirements: Universal AC power supply 85-265 VAC, 47-63 Hz; 10 watts maximum​


​0-3% and 0-10% oxygen (standard ranges) and 0-25% calibration range (nominal)
(user selectable percent ranges)
User selectable ranges can be set between 1% and 25% O2.
An optional 0-100% range is available
​± 2% of FS at constant temperature
± 5% of FS over operating temperature
(once temperature equilibrium is reached; at 3% and high user-defined​​ ranges)
​Response Time
​90% in less than 10 seconds at 77°F (25°C)
​32° to 122°F (0° to 50°C)
​Signal Output
​4-20 mA and 0-10 VDC negative ground, non-isolated
​Range Identification
​0-10 VDC
​One high alarm relay, adjustable
One low alarm relay, adjustable
One sensor calibration fail relay (all alarms are failsafe)
​10-36 VDC or 100V-240 VAC; 47-440 Hz, user specified
​2.81"H x 6"W x 2.87"D
(7.14 x 15.24 x 7.29 cm)
​Oxygen Sensor
​Class E-2
Optional:  Class A-2C for CO2 backgrounds
                   Zirconium oxide​


  • ​Wave ​​solder re-flow ovens

  • Glove box manufacturers

  • Nitrogen membrane skids

  • PSA skids

  • Helium recovery systems

  • Diving applications

  • Clean air systems for medical applications



​File Size​

Model 3290 Brochure


Model 3290 Manual


Model 3290 Declaration of Conformity​