Zeiss AT 030, Product Documentation Set

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Instruction for use 7 Maintenance
AT 030 7.1 Metrological check
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7 Maintenance
7.1 Metrological check
AT 030 applanation tonometer
All ZEISS applanation tonometers are metrologically checked and
delivered in this state.
CAUTION!
Risk due to measuring errors
During the service life of the device the user is responsible for
having it metrologically tested in compliance with national regula-
tions.
u
In the case of malfunctions, immediately remove the device
from operation and consult ZEISS Service.
NOTE! In Germany, the Medical Devices Operating Ordinance
requires the first inspection no later than 24 months after
the end of the first year of use, or immediately in the case of
impairment of the measurement function by external influ-
ences.
If you wish Carl Zeiss Meditec to perform the metrological check,
please contact ZEISS Service or your local dealer.
NOTE! Please return only cleaned and disinfected device.
The device does not require any maintenance.
Deviation [mN]
Force [mN]
Figure 7: Maximum deviation of measuring accuracy in accordance with
ISO 8612:2009
Tonometer holder
All tonometer holders are adjusted when delivered. With a viewing
magnification of 12x or 16x, the rear surface of the measuring
prism lies concentrically in the field of view of the eyepiece. In the
center of the motion range of the measuring arm the front surface
of the measuring prism is focused in the eyepiece.