To Calibrate The Maxo 2 Me Monitor To 100% Oxygen; Factors Influencing Calibration - Maxtec MaxO2ME Operating Manual & Instructions For Use

5. Press the CALIBRATION key
the display for approximately 5 seconds and then finish with 20.9%.
6. The unit is now calibrated and in the normal operating mode.
2.3.3 To Calibrate the MaxO
1. Place the external probe in a stream of medical grade USP or greater than 99%
purity oxygen. Expose the sensor to the calibration gas at a regulated pressure and
flow at a rate of 1-10 liters per minute (2 liters per minute is recommended).
2. Using the ON/OFF key
3. Allow the oxygen reading to stabilize. This will normally take about 30
seconds or more.
4. Press the Un-lock key
CAL and HIGH icons will begin to flash indicating the SET OPERATING MODE.
5. Press the CALIBRATION key
on the display for approximately 5 second and then finish with 100.0%.
6. The unit is now calibrated and in the normal operating mode.
CAUTION: The device will assume a percent oxygen concentration when calibrating. Be
!
sure to apply 100% oxygen, or ambient air concentration to the device during calibration
or the device will not calibrate correctly.

2.3.4 Factors Influencing Calibration

The primary factors influencing the MaxO
pressure, and humidity.
Effects of Temperature
The MaxO ME Monitor will hold calibration and read correctly within +/-3%
2
when in thermal equilibrium within the operating temperature range. The
device accuracy will be better than +/-3% if operated at the same temperature
at which it was calibrated. The device must be thermally stable when
calibrated and allowed to thermally stabilize after experiencing temperature
changes before reading is accurate. For these reasons, the following is
recommended:
1. Allow adequate time for the sensor to equilibrate to a new ambient temperature.
2. When used in a breathing circuit, place the sensor upstream of the heater.
3. For best results, perform the calibration procedure at a temperature close to
the temperature where analysis will occur.
Pressure Effect
Readings from the MaxO
of oxygen. The partial pressure of Oxygen (PO
of oxygen (%O
environment is measured (PO
6
CAL
ME Monitor to 100% Oxygen (recommended)
2
, make sure the unit is in the normal operating mode.
to unlock the keypad. Note the LOW, Smart Alarm,
ME Monitor are proportional to the partial pressure
2
) times the absolute pressure (AP) at which the sample
2
=%O
2
866.4.Maxtec www.maxtec.com
on the keypad. The word "CAL" will appear on
on the keypad. The word "CAL" will appear
CAL
ME Monitor are temperature,
2
) is equal to the percentage
2
x AP).
2