Component Identification; Symbol Guide; Base Unit Description - Maxtec MaxO2+ Instructions For Use Manual

The Maxtec Max-250 oxygen sensor is a sealed device containing a mild acid electrolyte,
◆
lead (Pb), and lead acetate. Lead and lead acetate are hazardous waste constituents and
should be disposed of properly, or returned to Maxtec for proper disposal or recovery.
DO NOT use ethylene oxide sterilization.
DO NOT immerse the sensor in any cleaning solution, autoclave or expose the sensor to
high temperatures.
Dropping sensor can adversely affect its performance.
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The device will assume a percent oxygen concentration when calibrating. Be sure to apply
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100% oxygen, or ambient air concentration to the device during calibration or the device
will not calibrate correctly.
NOTE: This product is latex free.

SYMBOL GUIDE

The following symbols and safety labels are found on the MaxO2+:
Follow instructions for use
Warning
Meets ETL standards
DO NOT
Low Battery
Calibration Required
Caution
Federal law (USA) restricts
this device to sale by or
on order of a physician
Manufacturer
Date of Manufacture
1.0 OVERVIEW
1.1 Indications for Use
The MaxO2+ oxygen analyzer is intended for spot checking of the concentration of oxygen
being delivered to patients ranging from newborns to adults. It can be used in pre-hospital,
hospital, and sub-acute settings. The MaxO2+ is not a life supporting device.
1.2 Base Unit Description
The MaxO2+ analyzer provides unparalleled performance and reliability due to an advanced
design that includes the following features and operational benefits.
Extra-life oxygen sensor of approximately 1,500,000 O2 percent hours (2-year
•
warranty)
Durable, compact design that permits comfortable, hand-held operation and easy to
•
clean
Operation using only two AA Alkaline batteries (2 x 1.5 Volts) for approximately 5000
•
hours of performance with continuous use. For extra extended long life, two AA
Lithium batteries may be used.
WWW.MAXTEC.COM • (800) 748-5355
On/Off Button
Calibration Button
Do not throw away.
Follow local guidelines
for disposal
%
Percent
Serial Number
Lot code/Batch code
Ingress Protection
Rating
Authorized
Representative
in the European
Community
Catalog Number
Medical Device
Oxygen-specific, galvanic sensor that achieves 90% of final value in approximately 15
•
seconds at room temperature.
Large, easy-to-read, 3 1/2-digit LCD display for readings in the 0-100% range.
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Simple operation and easy one-key calibration.
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Self-diagnostic check of analog and microprocessor circuitry.
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Low battery indication.
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Calibration reminder timer that alerts the operator, using a calibration icon on the LCD
•
display, to perform a unit calibration.
1.3 Component Identification
1 3-DIGIT LCD DISPLAY — The 3 digit liquid crystal display (LCD) provides direct readout of
oxygen concentrations in the range of 0 – 105.0% (100.1% to 105.0% used for calibration
determination purposes). The digits also display error codes and calibration codes as
necessary.
2 LOW BATTERY INDICATOR — The low battery indicator is located at the top of the display
and is only activated when the voltage on the batteries is below a normal operating
level.
3 "%" SYMBOL — The "%" sign is located to the right of the concentration number and is
present during normal operation.
4
CALIBRATION SYMBOL —
display and is timed to activate when a calibration is necessary.
5 ON/OFF KEY — This key is used to turn the device on or off.
6 CALIBRATION KEY — This key is used to calibrate the device. Holding the key for
more than three seconds will force the device to enter a calibration mode.
7 SAMPLE INLET CONNECTION — This is the port at which the device is connected to deter-
mine oxygen concentration.
1.4 Max-250 Oxygen Sensor
The Max-250+ oxygen sensor offers stability and extra life. The Max-250+ is a galvanic, partial
pressure sensor that is specific to oxygen. It consists of two electrodes (a cathode and an
anode), a teflon membrane and an electrolyte. Oxygen diffuses through the teflon membrane
and immediately reacts at a gold cathode. Concurrently, oxidation occurs electrochemically at
the lead anode, generating an electrical current and providing a voltage output. Electrodes
are immersed in a unique gelled weak acid electrolyte which is responsible for the sensors
long life and motion insensitive characteristic. Since the sensor is specific to oxygen, the cur-
rent generated is proportional to the amount of oxygen present in the sample gas. When no
oxygen is present, there is no electrochemical reaction and therefore, negligible current is
produced. In this sense, the sensor is self-zeroing.
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The calibration symbol is located at the bottom of the
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ENGLISH