Advanced Micro Instruments manufactures a complete line of high performance electrochemical oxygen sensors for industrial markets. AMI covers both percent and trace (ppm) applications in the measurement range of .05ppm up to 100% oxygen in a self contained disposable package.

Every AMI sensor is built to exact tolerances under controlled conditions in our facility located in Huntington Beach, CA. After assembly our sensors must endure a burn in period for several weeks in a nitrogen atmosphere. Upon passing, they are installed into individual test fixtures where every sensors’ output is logged for a 48-hour period while being tested for stability, upscale and downscale response times, zero offset, and linearity using various test gases.

As a result of advanced design and quality control procedures, our oxygen sensors deliver unmatched performance. AMI sensors are oxygen specific, providing a zero output in the absence of oxygen therefore eliminating the need for zero calibration gas, and are linear throughout the entire measurement range.

We have incorporated many advanced proprietary features, allowing for greater volumes of electrolyte and lead without sacrificing response times. Our sensor approach is truly unique and currently has a patent pending.

Both AMI percent and trace oxygen sensors are available for use in inert and CO2 background gas streams.


AMI Model Number P-2 Percent P-3 Percent P-4 Percent T-1 Trace T-2 Trace
90% Full Scale Response 8 sec. 30sec. 30sec. 8sec. 8sec.
Minimum Full Scale Range 100ppm 1000ppm 0-1% 0-1ppm 0-1ppm
Minimum Detection Limit 10ppm 100ppm 100ppm .05ppm .05ppm
Maximum Range 50% 25% 100% 0-10,000ppm 0-10,000ppm
Application %O2 in inert
background gases
%O2 in CO2
background gas
%O2 in inert
background gas
PPM O2 in inert
background gases
PPM O2 in CO2
background gases
Life Expectancy 12-15mo. in
20.9%O2
9-12mo. in
20.9%O2
18mo. in
20.9%O2
12-24mo. in
<100ppm
12-24mo. in
<100ppm
Warranty F.O.B. HB, CA 9 mo. 6mo. 12mo. 6mo. 6mo.
Direct Replacement for:
Teledyne model numbers B-1 and B-3 A-3 andA-5 C-3 B-2C A-2C
AII sensor model numbers PSR-11-21 and 23 XLT-11-15 PSR-11-54 PSR-12-223 XLT-12-123