Advanced Micro Instruments (AMI) was founded in 1995 to bring new innovative gas measurement solutions to the market. Our innovative patented designs include the Eliminator Cell Block™ and Bullet Sensor Technology™, and we also developed a state-of-the-art Command Center Electronics Platform™ that comes as part of our standard options package. These advancements were developed to allow our analyzers to exceed what competitive products could do or promise customers. You will find that our innovations not only deliver what customers expect and want for their applications but will open a whole new door to high performance, reliability and intuitive design.

Because of our commitment to new innovations and careful attention to the needs of the customer, AMI is recognized today as being the leader in Trace O2 Analysis in Natural Gas and other important industries. Our portfolio also encompasses hydrogen sulfide and has recently broadened to include TDL-Trace Moisture Analysis. AMI’s goal is to provide customers with the most optimal and effective gas analysis solutions, and we will exceed your expectations because of our advanced technologies and ‘best-in-class’ customer service and after-sales support.

Our high-performance analyzers and solutions include:

  • Oxygen Analyzers(Trace & Percent – available in both permanent-mount and portable designs)
  • O2 Sensors
  • H2S Analyzers (Trace – available in both permanent-mount and portable designs)
  • Oxygen Deficiency Monitors
  • TDL Moisture Analyzer (Trace)


  • AMI strives to keep our analyzers in stock, and they are typically shipped within 48 hours after an order is placed.

    MODEL 2010BR

    Since its release in 2004, the MODEL 2010BR has clearly established itself as the market leader in trace oxygen analysis for its unmatched measurement performance and reliability. At the center of its design is AMI’s patented Eliminator Cell Block™, which contains a complete sample system with all handling components, including the flow meter, needle valve and a 3-way sample/span/off selection valve, integrated into a solid metallic block and connected by internal drilled passages. Unlike competitive options with a traditional sample system that uses ‘off-the-shelf’ components, this innovative design creates a compact unit that is easy to install, operates almost maintenance-free, and has almost zero possibility of internal leaks. The Block provides the shortest and most efficient path for the natural gas sample and gives users front-panel sensor access for quick sensor replacement – a remarkable necessity in limiting the sensor’s exposure to air. The analyzer includes the Command Center Electronics Platform™ as part of the MODEL 2010BR’s standard options packages, which provides users with a complete suite of advanced features, including Fully Adjustable & Programmable Alarms, ModBus RTU, and Datalogger for O2 readings, brownouts, calibrations, power failures and calibration factor.

    The MODEL 2010BR is approved for operation in Class 1, Div 1, Groups B,C,D hazardous areas with a flammable gas sample. The unit can be purchased with an optional low-power (efficient), integrated explosion-proof heater, allowing it to operate in temperatures as low as -20°F. An Extreme Weather Enclosure is also available for customers working in extreme environments where the temperature can drop to -40°F.

    Brochure Sheet

    The MODEL 3010BR provides customers with a superior solution in place of hazardous-waste generating lead acetate tape for measuring trace amounts of H2S. This high-performance analyzer contains several key proprietary innovations as part of its design. The Eliminator Cell Block™ has a complete sample system with all handling components, including the flow meter, needle valve and a 3-way sample/span/off selection valve, integrated into a solid metallic block and connected by internal drilled passages. In contrast to competitive analyzers that use a traditional sample system with ‘off-the-shelf’ components, our Eliminator Cell Block™ makes it possible for the MODEL 3010BR to be compact, easy to install, virtually maintenance-free, and practically immune to risk of internal leaks. The Block also delivers fast response times and provides the most efficient gas path for sample to the travel to the sensor - a key benefit because of the inherent ‘sticky nature’ of H2S. The Command Center Electronics Platform™ is also included as part of the Analyzer’s standard options package. This powerful and comprehensive platform provides users with a complete suite of advanced functionalities, including Fully Adjustable & Programmable Alarms, ModBus RTU, and Datalogger for H2S readings, calibrations, power failures, brownouts, and calibration factor.

    The MODEL 3010BR is approved for use in Class 1, Div 1, Groups B,C,D hazardous areas with a flammable gas sample. Customers have the option to purchase a low-power (efficient), integrated explosion-proof heater to handle environments where temperatures can drop to -20°F. Additionally, we offer an Extreme Weather Enclosure for customers in environments where the temperature can drop as low as -40°F.

    Brochure Sheet

    The MODEL 1000RS is the premier choice for portable trace oxygen analysis in the Natural Gas Industry. Activities, such as spot-checking and trouble-shooting in gas systems, require a rapid reading of trace oxygen levels without the long wait for stability or a risk of sensor damage through incorrect operation. The MODEL 1000RS is a compact, rugged and highly reliable portable analyzer that contains our patented Eliminator Cell Block™. A complete sample system with all handling components are fully integrated into the Block and connected by internal drilled passages. There is also a breakthrough 4-way sample selection valve that is designed to simultaneously open and close the ports leading to the sensor, based on whether the user wants gas sample to reach or bypass the sensor. This flawless design eliminates any potential accidents that could result from a single port being left opened or close, causing unintended back-pressure or damage to the oxygen sensor. Additionally, the 4-way sample selection valve provides the added benefit of keeping measurement readings from spiking due to the presence of oxygen levels already in the line when the portable unit is quickly connected and disconnected from the gas line.

    The MODEL 1000RS comes equipped with the Command Center Electronics Platform™ as part of the standard options package, which gives users complete control and management of the Analyzer’s trace measurement readings and history data (calibration, power failure and brown-out history). Its battery power provides up to 350 hours of operation on a full charge. The unit is intrinsically safe and has been formally approved by CSA International to UL and CSA standards for meeting requirements for Class 1, Div. 1, Groups B,C,D hazardous areas with a flammable gas sample.

    Brochure Sheet

    The MODEL 221R is the top oxygen-deficiency monitor used by many industries to protect their employees from sudden asphyxiation due to leaks from pressurized gas cylinders or cryogenic-liquefied gases stored in dewers. Our advanced design eliminates the dreaded experience of having to deal with false alarms. By utilizing a zirconium-oxide sensor, the MODEL 221R can operate unfazed, even with a rapid temperature change. In fact, the unit’s oxygen monitoring performance remains rock solid even when there is a temperature change from 0°F to 130°F over a 30 minute period – a performance achievement that cannot be matched by other competitive options. Employing a zirconium oxide-based solution also has the added benefit of an expected 10-year life, eliminating the need to replace sensors every 6 months.

    The MODEL 221R also comes equipped with our state-of-the-art Command Center Electronics Platform™ at no additional cost to the customer. This powerful platform provides users with many useful tools and features, including Datalogger, unit history and 2 OSHA-alarm set points (one preset at 20.0% for ‘caution’ and the other preset with audible alarm at 19.5% for ‘danger’). Companies, laboratories and universities have universally chosen the MODEL 221R for its unparalleled performance and maintenance-free operation.

    Brochure Sheet

    The MODEL 4010BR has been designed to be the industry’s most advanced TDL Moisture Analyzer. It utilizes Tunable Diode Laser Absorption Spectroscopy (TDLAS) to measure the concentration of H₂O vapor in Natural Gas. The Analyzer is designed with several key innovative breakthroughs not seen on other competitive devices. Among them are the Liquid Eliminator Cell Block™, SMART Calibration™, and Liquid Separator Technology™. These innovations come as standard options, and they ensure that our Analyzer provides the highest level of performance, reliability, and ease-of-use.

    The unit has a minimum detection of 0.25 lbs and a standard measurement range of 0.25 to 20.0 lbs of H2O. It offers excellent repeatability and delivers incredibly fast upscale / downscale response times. The MODEL 4010BR also contains the Command Center Electronics Platform™, allowing customers access to a full suite of powerful tools – including 2 Fully Adjustable Moisture Alarms, Datalogger, Analyzer History and USB virtual comport and Modbus bi-directional RS485. It is even designed to meet requirements for Class I, Div. 1, Groups B,C,D in a flammable gas sample. Customers will learn that the MODEL 4010BR is PERFECTLY PRICED and will quickly become their Moisture Analyzer of choice.

    Brochure Sheet