Oxygen Analyzers , Oxygen Sensors, Helium Analyzers,... | Analytical Industries | Maxtec | Scuba Center has been selling quality scuba diving and snorkeling equipment since 1973. You will find a wide selection of scuba and snorkeling equipment at both our Minneapolis and Eagan, Minnesota locations.

PADI TecRec courses are the quality benchmarks in the tec diving world due to their rigorous, yet logical, training sequence and the PADI educational materials that support them. TecRec courses are instructionally valid and have a seamless course flow that takes you from a new tec diver to one qualified to dive to the outer reaches of sport diving. Each level introduces you to new gear and procedures to extend your dive limits. | Rebreather training and support in Eagan, Minnesota

Scuba Center is a SAM ( formerly CCR ) registered supplier for the United States Government.  Our customers include: U.S. Coast Guard, U.S. Navy, U.S. Federal Government Agencies, Law Enforcement Agencies, Search and Rescue (SAR) Teams, Fire Departments, State and Local Government agencies, Commercial Diving Companies, School Districts, Television and Movie production companies, and many others.
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Gas Analyzers and Sensors
Analytical Industries

Analytical Industries Palm O2 D Oxygen Analyzer 

Analytical Industries Palm O2 D Oxygen Analyzer


Palm size portable nitrox analyzer measures O2 concentrations from 0.05% to 100%. Features an advanced galvanic oxygen sensor, a 32 month operating life with no maintenance required, 13,000 hours of battery use, and a wide variety of optional accessories that make it an ideal cost effective choice for checking O2 levels of compressed air scuba tanks and Nitrox mixes.

  • Easy user interface... one touch controls
  • Simple to use... accurate reliable results
  • One touch calibration... 100% O2 or air
  • Long battery life... 13,000 hrs of use
  • Advanced sensor technology
  • State of the art electronics
  • Standard Dome Adapter Included
  • Warranty: 12 months analyzer; 12 months sensor

Analytical Industries Palm O2 D Oxygen Analyzer

Price: $265.00   add Analytical Industries Palm O2 D Oxygen Analyzer to cart

Analytical Industries 4001 Trimix Analyzer 

Analytical Industries 4001 Trimix Analyzer


The most advanced and easy to use trimix analyzer on the market. This unique device is a must have part of any pre-dive checklist... Proprietary software, environmental sensor and a large backlit LCD enable users to obtain the most accurate calibration possible with a single touch, eliminating errors related to charts and knobs. Additional information including MOD at PP02 of 1.4 ATA is well laid out and informative.

  • The Oxygen value is compensated for temperature, barometric pressure and relative humidity.
  • The Helium value is compensated for differences in the thermal conductivity of Oxygen and Nitrogen enabling the analyzer to precisely measure any combination of Helium, Oxygen and Nitrogen.
  • Imperial or Metric units at a touch
  • Rechargeable battery powers the AII 4001 for 16 hours of continuous use.
  • 9V DC power adapter 110/220 VAC is included, charges battery in 2 hours. Adapter can safely remain connected for bench top operation

Special order. Please allow additional lead time.

Case Included

Price: $875.00   add Analytical Industries Trumix 4001 Trimix Analyzer to cart

Maxtec Analyzers

MaxO2+ A O2 Analyzer 

MaxO2+ A O2 Analyzer


The MAXO2+A Scuba Oxygen analyzer was designed with simplicity and portability in mind. This analyzer is ideal for checking oxygen percent accuracy from your B.C. hose (Barbed Adapter w/tubing not included) or directly from a tank when used in conjunction with the QuickOx Adapter.

  • 24 month warranty on both the analyzer and the sensor

  • Internal MAX-250+ Long Life Sensor

  • 5,000+ hours operation on 2 AA batteries

  • Easy one touch calibration

  • Patented ergonomic design fits comfortably in your hand

  • Barbed Adapter w/tubing [ R207P17 ] not included. Order separately below.

Maxtec MaxO2+ A Oxygen Analyzer

Price: $349.95   add Maxtec MaxO2+ A Oxygen Analyzer to cart

Maxtec Oxygen Analyzers | Shop online for analyzers and replacement oxygen sensors Maxtec MaxO2 Manual

Maxtec Accessories


Barbed Adapter w/tubing [ R207P17 ]

Price: $8.00   add Barbed Adapter w/tubing [ R207P17 ] to cart

Maxtec Replacement Oxygen Sensors

Maxtec MAX™-250+ Oxygen Sensor | Internal Oxygen Sensor for MaxO2+A oxygen analyzers | Gas Analysis and Technical Diving Equipment.

Maxtec MAX™-250+ Oxygen Sensor: R125P02-013
Internal Oxygen Sensor for MaxO2+A
2-Year Warranty

Price: $79.00   add Maxtec MAX-250+ Replacement O2 Sensor for MaxO2+A to cart

Maxtec MAX™-301 Oxygen Sensor: R108P15
Oxygen Sensor for Teledyne* R-17D, AII PSR-11-39MD

Price: $95.00   add Maxtec MAX-301 O2 Sensor for Teledyne R-17D to cart

  • Range: 0-100 Vol.%

  • Output: 8.5 to 12 mV

  • Connector: 3.5mm mono jack

  • Special Features: Hydrophobic Membrane

12-Month Warranty

Maxtec MAX-305 Oxygen Sensor | Oxygen Sensor replacement for Teledyne R-22D | Order oxygen analyzers and rebreather accessories from Scuba Center in Eagan, Minnesota

Maxtec MAX™-305 Oxygen Sensor: R108P17
Oxygen Sensor for Teledyne* R-22D, AII PSR-11-39-MD

Price: $70.00   add Maxtec MAX-305 O2 Sensor for Teledyne R-22D to cart

  • Range: 0-100 Vol.%

  • Output: 8 to 13 mV

  • Connector: 3-pin Molex gold-plated

  • Response Time: <14 seconds

  • Special Features: Hydrophobic Membrane

12-Month Warranty

*For sensors in re-breather applications, Maxtec warrants the sensor to work according to the stated specifications under normal operating conditions. For sensors used in re-breather applications, Maxtec has not performed validation or verification testing and therefore cannot promote our sensors for use in this application and disclaims any liability for off-label use. Verification and validation for use in these applications is the responsibility of the equipment user and/or manufacturer.

OxyCheq Analyzer Accessories

OxyCheq ROA-04-01 | Expedition Flow Restrictor (Standard Connector) Same as the BC Flow Restricter but without the sensor cap. Expedition BC Flow Restrictor:

Price: $29.00   add OxyCheq Expedition BC Flow Restrictor OA-04-01 (ROA-10) to cart

OxyCheq Expedition Flow Sensor Cap OA-07-04: Also used to attached air tube to an external Oxygen sensor. | OxyCheq Gas Analyzers | Technical Diving Equipment Expedition Flow Sensor Cap:
Attached tubing to an external sensor.

Price: $15.00   add OxyCheq Expedition Flow Sensor Cap OA-07-04 to cart

OxyCheq Sensor Tee | Adapter for use with many Oxygen Analyzers with external O2 Sensors | Technical Diving Equipment OxyCheq Sensor Tee:
Adapter for many Oxygen Analyzers with external O2 Sensors.

Price: $8.00   add OxyCheq Analyzer Sensor Tee OA-05-01 (ROA-13) to cart

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While these are excellent reference materials, in no way should this information be considered a replacement for proper training for the specific type of diving in which you plan to participate.