The AMI Model 2010B is a complete package for accurately and continuously measuring trace levels of oxygen in flammable gas streams.

The sophisticated microprocessor based electronics provides advanced features with a simple straightforward user interface. The controls are designed to be intuitive, quick and simple while still providing a security function against unauthorized tampering.

The large 3½ digit display auto-ranges for maximum resolution, while the user selectable output range remains fixed in your range of interest. The 2010B is supplied with ten standard output ranges: 0-10ppm, 0-50ppm, 0-100ppm, 0-500ppm, 0-1000ppm, 0-.500%, 0-1%, 0-5%, 0-10% and a air calibration range of 0-25%, two fully adjustable oxygen alarm settings, and a 1-5VDC output.

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The RS-232 port allows advanced users to quickly and easily take advantage of all the standard features:

  • Individual alarm delay setting
    (0-300 minutes)
  • Choice of latching/non-latching alarms
  • Failsafe or non-failsafe logic
  • Alarm pulse feature: Operates a low powered latching slam valve in remote solar powered locations
  • Output range default: Automatically returns to your output range of interest in case of technician error or unwanted tampering.

The 2010B incorporates our advanced patented cellblock technology consisting of a single compact metallic block that undergoes a complex machining process, followed with corrosion-resistant nickel plating. The block contains a series of drilled gas passages eliminating the need for long lengths of tubing and compression fittings; it uses critical orificesin place of needle valves and pressure regulators; it also contains a unique integrated 3-way sample/span/shut off valve, and flowmeter. This sophisticated design results in quicker up and down scale response times and eliminates potential leak sources.

When the application requires, we add a quick-change H2S scrubber and particulate/coalescing filter mounted directly to the block. Contents of the H2S scrubber can be replenished in minutes without the use of any tools or potting compound.

The front panel sensor access makes sensor installation or replacement quick and easy. It also allows for a rapid, accurate calibration on ambient air (20.9%) without the use of tools. A span gas port comes standard for those who prefer a certified span gas calibration.

The 2010B does not require a zero or other support gases to operate and is linear throughout its wide range of measurement.

The Model 2010B has been agency approved for Class I, Div. II, Groups C, D in a flammable gas sample to UL standard 913.

  • Standard user selectable output ranges:
    0-5ppm, 0-10ppm, 0-50ppm, 100ppm, 0-500ppm,, 0-1000ppm, 0-.500%, 0-1%, 0-5%, 0-10% and a calibration range of 0-25%
  • Minimum detection: 0.5% of range or 50ppb
  • Repeatability: ±1% of full scale at constant temperature (for 10ppm, repeatability is ±3% of scale)
  • Display: 3½ digit LCD
  • Operating temperature range:
     32°-113°F (0-45°C)
  • Diurnal temperature specification:
    0-45°C, < ±3 of scale
  • 90% Upscale response times:
    100ppm-25% < 10 sec
    0-10ppm < 25 sec
    0-5ppm < 50 sec
  • Alarms (standard): 2 fully adjustable oxygen concentration set points. Solid state “contact closure.” 1A 5-28VDC
  • Trouble contacts:
    Solid state “contact closure.” 1A/5-28VDC
  • Output signal: 1-5VDC, or optional isolated 4-20mA
  • Power requirements: 10-28VDC <40mA
  • Sample connections:
    316 S.S. ¼" compression fittings
  • Major Wetted parts:
    Nickel-plated metallic block, 316 S.S. fittings
  • Mounting: Wall-mount
  • Area classification: Approved for Class 1, Div. 2, Groups C,D in a flammable gas sample to UL Standard 913-88.
  • Dimensions: 10.00"W x 16.75"H x 6.00"D as shown
  • Weight: 15 lbs
  • Sensor access: Easy, direct front panel access


  • NRTL Approval to UL-913 Class I, Div. II, Groups CD with flammable sample
  • Auto-ranging digital display
  • 11 User selectable output ranges: 0-5ppm, 0-10ppm, 0-50ppm 100ppm, 0-500ppm, 0-1000ppm, 0-5000ppm, 0-1%, 0-5%, 0-10% and a calibration range of 0-25%
  • Programmable alarm delays (0-300min.)
  • Output range default (0-188min.)
  • Delay for alarm set points
    (0-300min.)
  • RS232 bi-directional communications
  • Output: 1-5VDC, or isolated 4-20mA
  • Power requirements: 10-28VDC
    < 40mA
  • 2 Fully adjustable oxygen concentration alarms. Solid state "contact closures"
  • Trouble alarm. Solid state
    "contact closures"
  • Security function
  • Direct, easy front-panel sensor access
  • Compact size
  • Nickel-plated cellblock, 316 stainless steel fittings
  • 2 Year warranty (excluding sensor)
  • No calibration or support gases necessary
  • Virtually unaffected by hydrocarbons and other oxidizable gases
  • RFI protected
  • Unaffected by change in flow rate
    (0.1-5 SCFH)


  • Revolutionary cellblock technology
  • Faster response and recovery times
  • Direct front panel sensor access
  • Space saving design
  • (11) customer selectable output ranges
  • Programmable alarm delays (0-188min.)
  • Output range default setting (0-188min.)
  • Built in intrinsically safe barriers for input power and alarm connections
  • Two year warranty
  • Unaffected by change in flow between
    0.1-5 SCFH
  • No support gases necessary
  • Unaffected by hydrocarbon or other oxidizable gases
  • RFI protected
  • Low cost
  • NRTL Approval to UL-913 Class I, Div. II, Groups CD with flammable sample