13
DEUTSCH
ENGLISH
FRANÇAIS
ITALIANO
ESPAÑOL
NEDERLANDS
PORTUGUÊS
SVENSKA
DEUTSCH
ENGLISH
FRANÇAIS
ITALIANO
ESPAÑOL
NEDERLANDS
PORTUGUÊS
SVENSKA
© HAAG‑STREIT AG, 3098 Koeniz, Switzerland – HS‑Doc. no. 1500.7006000.04260 – 26. Edition / 2020 – 03
NOTE!
IP code: IPX0 (device is not protected against liquids)
7.3 Checking the Tonometer AT 900
NOTE!
This check must be carried out once a month. If the check yields errone‑
ous results, please check the following points:
1. Is the measuring prism properly positioned?
2. Is the control weight correctly set?
3. Repeat the check.
Defective equipment must be sent immediately to your Haag‑Streit representative.
NOTE!
Haag‑Streit offers a repair and service package. For further information,
please contact your Haag‑Streit representative directly.
AT 900 model R
AT 900 model T
AT 900 model BQ
AT 870
Check the drum position 0
•
Check position ‑0.05
The zero line on the measuring drum is moved downwards, opposite the index, by
a single marking width. The feeler arm must move by itself all the way to the stop‑
piece, in the direction of the examiner.
•
Check po0.05
The zero line on the measuring drum is moved upwards, opposite the index. The
feeler arm must move all the way to the stop‑piece, on the patient's side.
‑0.05
+0.05
Check the drum position 2
•
To conduct it, a control weight is used. The weight rod is engraved with five rings.
The middle ring corresponds to a scale value of 0, the rings immediately to its left
and right correspond to a value of 2, and both outside scale rings have a value of
6.
•
One of the drum setting marks is set exactly to the index line on the holder. The
weight is fitted on the feeler axis (33) so that the longer part points to the exam
‑
iner.
33
6
2
0
6
2
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