3
866.4.Maxtec www.maxtec.com
2.0 SET-UP INSTRUCTIONS
2.1 Sensor Installation
2.2 Calibration
A new calibration is required when:
» The measured O
2
percentage in 100% O
2
is below 97.0%.
» The measured O
2
percentage in 100% O
2
is above 103.0%.
» The CAL reminder icon is blinking at the bottom of the LCD.
» You are unsure about the displayed O
2
percentage, see Factors Influencing Accurate
Readings in section 3.0.
The MaxVenturi can be calibrated at 100% oxygen or room oxygen (20.9%).
The One Touch calibration will assume one of these two concentrations.
On/off Button
Calibration Button
Low Battery
Percent
Authorized Representative
in the European Community
Lot code/Batch code
Drip Proof
Serial Number
Manufacturer
2
...30-90 Minutes
5
3
6
1
4
Remove Max-250 sensor
from package and pull
off barrier film.
Wait 30 to 90 minutes
for sensor to stabilize.
Attach flow diverter.
Attach sensor to sensor
cable.
Press and hold CAL button
for three (3) seconds.
Wait for display to read
"20.9%".
Insert sensor into port on
MaxVenturi.
