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ENGLISH
1.0 SYSTEM OVERVIEW
1.1 Base Unit Description
The MaxO2 ME is a handheld oxygen analyzer/monitor capable of measuring the oxygen con-
centration from 0% to 100% in a sample gas. A Max-550E oxygen sensor outputs a voltage
which is used by the MaxO2 ME to determine the concentration of oxygen based on a calibra-
tion at room air or 100% oxygen. The MaxO2 ME contains alarms that can be controlled by the
user to set a maximum or minimum allowable oxygen concentration.
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Oxygen sensor of approximately 1,500,000 O2 percent hours.
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External probe with 10 ft., extendable cable and diverter fitting for standard 15 mm "T"
adapter.
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Operation using 4 AA alkaline batteries (4 x 1.5 volts) for approximately 5000 hours of
performance with typical use.
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Oxygen-specific, galvanic sensor that achieves 90% of final value in approximately 15
seconds at room temperature.
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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.
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Adjustable high-level and low-level alarming capability with flashing LED and audible
indication of alarm conditions.
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Smart high-low alarm setting to help adjust alarm settings quickly
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Back-light display with auto ambient light level detection.
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Sleep Mode operation to extend battery life.
Indication for Use:
The MaxO2 ME oxygen monitor is intended for continuous monitoring of the concentration of
oxygen being delivered to patients ranging from newborns to adults.
It can be used in the hospital and sub-acute settings. The MaxO2 ME is not a life supporting
device.
1.2 Essential Device Performance
Essential performance are the operating characteristics of the device, without which would
result in an unacceptable risk. The following items are considered essential performance:
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Oxygen measurement accuracy
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Operation of visible and audible alarms
1.3 Component Identification
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LOW ALARM LED —
In a low alarm condition, the yellow "LOW ALARM" LED will flash once
every two seconds, accompanied by the audio buzzer. If the Oxygen level is below 18%,
the red “LOW ALARM” LED will flash twice per second accompanied by the audio buzzer.
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HIGH ALARM LED —
In a high alarm condition, the yellow "HIGH ALARM" LED will flash
once every two seconds accompanied by the audio buzzer.
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COILED CABLE —
The coiled cable allows the sensor to be positioned up to 8 feet from the
side of the unit.
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OXYGEN SENSOR WITH DIVERTER —
The sensor (with diverter) is designed to fit industry
standard, 15mm I.D. "T" adapters.
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CALIBRATION KEY —
This key is used to calibrate the device. The device must be in
the unlocked state for the key to operate. See section 2.2 for instructions on calibrating.
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UP (ALARM HIGH) —
The up key is used in setting the high alarm limit. The device
must be in the unlocked state for the key to operate. See section 3.1.2 for instructions on
setting the high alarm limit.
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UNLOCK KEY —
The unlock key is used to unlock and lock the instrument.
8
BACKLIGHT —
The backlight key will manually activate the backlight for 30 sec-
onds. See section 3.4 for more information on backlighting operation.
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ALARM SILENCE KEY —
In an alarm condition, pressing the SILENT key will deacti-
vate the audible alarm for 2 minutes.
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ON/OFF KEY —
This key is used to turn the device on or off. To turn the device OFF,
the button must be held while a rapid 3-2-1 countdown takes place to prevent accidental
power-off.
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DOWN (ALARM LOW) —
The down key is used in setting the low alarm limit. The
device must be in the unlocked state for the key to operate. See section 3.1.1 for instruc-
tions on setting the low alarm limit.
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SMART ALARM KEY —
The smart alarm key is used to help set the High-Low Alarm
window quickly. This automatically sets oxygen alarms at ±3%.
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EXTERNAL POWER SUPPLY PORT —
The port provides connection for the external power
supply. See section 3.6 for more information on the power adapter.
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LCD DISPLAY —
The liquid crystal display (LCD) provides direct readout of oxygen con-
centrations. The digits also display error codes, alarm set modes and calibration codes
as necessary.
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