8
Two types of battery are recommended for your Oxymeter
• PANASONIC Ni-MH 2700 rechargeable
• Energizer Ultimate Lithium
DO NOT MIX THE BATTERIES, NEVER RECHARGE non
rechargeable battery.
If the batteries are replaced with the alternative
recommended type, it is suitable to modify
the battery type in the settings (parameters/
system/change battery type)
When the battery level indicator shows a low level,
it is necessary to change all the batteries.
In the case of batteries replacement, perform a single
measurement SINGLE to refresh the battery indicator level.
In case of deep discharge of the batteries: the charger
may display NULL. You have to wait a few hours and
leave the batteries on the charger.
4- CALIBRATION CHECK
a- Quick check
You can check the calibration by performing an AIR
measurement, you need to set the temperature in manual
mode first and enter the current temperature value.
Choose the %O
2
oxygen unit, the value displayed should
be 20.7% O
2
more or less 0,5%.
b- Deep check
Add 100 mL water to a suitable vessel . To obtain air-
saturated water, blow air into the water using an air-pump
with a glass-frit (air stone), creating a multitude of small
air bubbles, while stirring the solution. After 20 minutes,
switch of the air-pump and stir the solution for another
10 minutes to ensure that the water is not supersaturated.
Choose the oxygen unit %EAS and perform measurements
after temperature stabilization the value should be
around 100% (+-4%).
