The 10-year life sensor along with all its standard features makes for

The 10-year life sensor along with
all its standard features makes for
an excellent choice when
measuring percent levels of oxygen.
The AMI Model 70 provides a complete low cost
solution when measuring percent levels of oxygen in
the range of 0-95% for general-purpose applications.
This very compact, rugged analyzer combines state-ofthe-art microprocessor based electronics with a simple,
straightforward user interface.
The large 3½ digit display auto-ranges for maximum
resolution, while one of the four standard user
selectable output ranges remains fixed in your range of
interest. Other standard features include two fully
adjustable oxygen alarm settings, a system failure
alarm, and dual outputs: 0-1VDC and isolated 4-20mA.
Standard output ranges include: 0-1%, 0-5%, 0-10%
and 0-25%. Optional ranges available are: 0-50% and
0-95%.
This complete package employs a revolutionary long
life zirconium oxide sensor that provides unmatched
stability and accuracy even in rapid and extreme
temperature swings from 0°F to +130°F. It requires no
support or calibration gases (other than ambient air) for
its bi-annual calibration. The long life sensor lasts up to
10 years when used continuously for measurements in
the range of 0-21% oxygen and longer if used
intermittently.
This eliminates the need to purchase, stock, frequently
calibrate or replace the standard galvanic type oxygen
sensors, greatly reducing overall costs.
The Model 70 responds rapidly to changes in oxygen
levels (90% full scale<12sec.) partially due to its unique
sample system. It consists of a compact cellblock with
precision-machined passages and critical orifice. This
replaces the traditional approach of using several feet
of tubing, compression fittings and a needle valve. Our
design automatically controls flow rates with varying
inlet pressures from 1 to 30psig. and is not flow
sensitive in the range of 0.1 to 50 SCFH.
The Model 70 is truly a high performance, low cost
solution panel mount analyzer for general-purpose
applications.
MODEL 70 PERCENT OXYGEN ANALYZER
FEATURES
• 4 user selectable output ranges to choose from
• High resolution 3 ½ digit LCD
• 2 fully adjustable oxygen concentration alarms
• RFI protected
SPECIFICATIONS
• 4 user selectable output ranges to choose from:
0-1%, 0-5%, 0-10% and 25%
Optional ranges: 0-50% or 0-95%. The user selection
of an output range simultaneously controls the two
alarms and the analog output so that all 3 functions
operate on the same range
• 0-1VDC and isolated 4-20mA. analog output signals
• Digital display: High resolution 3 ½ digit LCD.
Reads full scale from 0.00% to 25.0% independently
of output range selection
• Power requirements: 10-28VDC <3 watts, supplied
with a 115VAC to 12VDC adapter
• Alarms: 2 fully adjustable oxygen concentration
alarms. Dry contacts 3A. @24VDC/115VAC
• Low minimum detection limit
• Analog output signals: 0-1VDC and isolated
4-20mA. Represents the output range selected: 0-1%,
0-5%, 0-10% and 25%
• Excellent repeatability and stability
• Advanced Cellblock Technology: Unique cellblock
and critical orifice design eliminates the need for a
flow control valve, internal tubing and compression
fittings. Other benefits of this design include:
compact size and faster response times
• Low original cost and virtually maintenance free
over its entire life
• Requires no support or calibration gases, other than
ambient air
• 10 year life sensor. No annual sensor replacement or
sensor shelf life issues
• Power requirements: 10-28VDC <3 watts
Supplied with a 115VAC to 12VDC adapter
• Minimum detection: 0.05% of oxygen
• Repeatability: +/- 0.1% of range or +/- 0.1% of
oxygen, whichever is greater
• Operating temperature range: 0 to 130˚ F
• Diurnal temperature specification:
< +/- 2 % of scale over temperature range
• 90% full scale response times for specified range:
0-25% <12 seconds; 0-95% < 12 seconds
• Long life zirconium oxide sensor: 10 year life
expectancy
• Area Classification: Designed to meet General
Purpose requirements
• Area Classification: Designed to meet General
Purpose requirements
• Inlet gas pressure: 1.0 to 30psig
• Unaffected by changes in flow rate from 0.1 to
5.0 SCFH
• Wetted parts: 316 S.S. fittings and critical orifice,
anodized aluminum cellblock
• Panel mount
• Unaffected by changes in flow rate from 0.1 to
5.0 SCFH
• Compact size
• Mounting: panel mount
• Gas connections: ¼” 316 S.S. compression fittings
• Dimensions: 6.5”W x 4.2”H x 3.0”D
• 2 year warranty for analyzer and sensor, parts
and labor
• Weight: 3 lbs.
For more information, please contact:
18269 Gothard Street
Huntington Beach, CA 92648
Phone 714.848.5533 Fax 714.848.4545
Web Site www.amio2.com
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