Analytical Industries Inc. AII-3000 Series, Oxygen Analyzer


SKU: AII-3000 Categories: ,


Analytical Industries’ AII-3000 series analyzer provide a very easy way to verify oxygen in diving applications. These inexpensive gas analyzers measure and display the concentration of oxygen in compressed breathing air tanks intended for scuba diving, for personnel safety, area monitoring, O2 deficiency in confined spaces, checking breathing air tanks and confirming the O2 levels prior to welding. The devices utilize an electrochemical galvanic fuel cell type oxygen sensor of the type that is extensively used to measure oxygen concentrations from 0% to 100% in gas streams.

Standard Features

  • 0-100% O2 measurement range
  • Long sensor life up to 60 months
  • Battery life up to 12,000 hours of continuous use
  • Integrated or remote sensors
  • A fast response time of T90 in <10 seconds

Additional information

Measurement Range

0-100% Oxygen


< ±2% of FS range under constant conditions

Response Time

T90 < 10 Seconds

Sensitivity (LDL)



±1% Under Constant Conditions

Sensor Model

AII-11-60 (remote sensor)

Sensor life at 25°C (77°F) and 1 Atmosphere

60 months in air 5°C (77°F) and 1 atmosphere

Calibration Interval

Prior to use and after 8 hours operation

Inlet Pressure

Ambient or 0.34-2 barg (5-30 psig) for flow through connector

Flow Rate (Constant)

0.2-10 Nl/min (0.4-20 SCFH)

Gas Connections

1×16 mm thread
1/4" tube for remote sensors
See accessories for additional connectors


3½ digit backlit LCD 7 x 3.5cm (2.75 x 1.375"); resolution 0.1


9.1 x 14.9 x 4cm (3.6 x 5.9 x 1.6")


280g (10oz)


Temperature compensated


User adjustable HI and LO alarms (AII-3000 M and MHC only)

Storage Temperature

-20°C to +60°C (-4°F to 140°F) on intermittent basis

Operating Temperature

5 to 45°C (41°F to 113°F)


2 AA Alkaline Batteries

Battery Life

Up to 1200 hrs


Non-condensing 0-95% RH


ISO 9001:2000, MDD 93/42/Annex II, ISO 13485:2003