10.1.3
Probe calibration
The Alpha OAE+ probe is calibrated at the factory prior to delivery. This is why there may not be a full year to the next cal-
ibration date stated on the calibration certificate when you receive Alpha OAE+.
The first time you connect the probe to Alpha OAE+ and perform a test, the calibration date will be set so that there is
one year to the next calibration.
To view the next calibration date, select
Settings > System info
. Before you perform the first test, the date field will be
blank.
Calibration frequency
The probe should be calibrated annually by authorized service personnel at an authorized workshop.
10.2
Eartips
Eartips are disposable and should not be cleaned.
Note
•
Eartips should be disposed of according to local regulations.
10.3
Cleaning Alpha OAE+
•
Before cleaning, switch off Alpha OAE+ and unplug it from any external power source.
•
Unplug the probe from Alpha OAE+.
•
Use a tissue moistened with cleaning fluid to clean the surface of the device.
To maximize the housing lifetime, avoid the following chemicals:
•
Isopropyl, 70%
•
Ethanol, >40% concentration
•
Formaldehyde
•
Dichloro-meta-xylenol 5-10%
If disinfecting Alpha OAE+ is considered necessary, some suitable alternatives are cleaning agents that contain:
•
Hydrogen peroxide, 3%, 30%
•
Peracetic acid 0.5-5%
•
Sodium hypochlorite 1-10%
•
Glutaraldehyde 2-5%
•
Ortho-phthalaldehyde (a.k.a. OPA) 0.5-2%
•
Chlorhexidingluconat 2-4%
Caution
•
Always make sure that no moisture enters the probe, the sockets (data interface connector and probe plugs)
or the test cavity.
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Otometrics - MADSEN Alpha OAE+
10 Maintenance and Cleaning
