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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. 1500.7006000.04240 – 24. Edition / 2018 – 04
Bands are no longer in contact (17)
16
Pressure is too high.
Lower the pressure by rotating the tonometer knob in the
opposite direction.
Correct setting! (18)
17
The inside borders of the fluorescein bands are contacting each
other.
6. Technical data
6.1 Applanation tonometer AT 900
Measuring force gen-
erated
through leverage weight.
Installation
AT 900 model R
AT 900 model T
AT 900 model BQ
Can be fitted on the peg on the microscope.
Can be fitted on the guide plate on the swiv
‑
elling peg for the microscope and illumina‑
tion arm.
Assembly on the microscope arm.
Measurement range
0 ― 80 mm Hg
Measurement deviation
The measurement deviation in the measuring prism is in the measur‑
ing range from 0 – 58.84 mN and amounts to a maximum of ±1.5%
and to a minimum of ±0.49 mN of the nominal value.
Backlash width
≤0.49 mN
Net weight
AT 900 model R
AT 900 model T
AT 900 model BQ
0.73 kg (without accessories)
0.49 kg (without accessories)
0.78 kg (without accessories)
AT 900 model R
AT 900 model T
AT 900 model BQ
6.2 Applanation tonometer AT 870
Measuring force generated
Via spring force
AT 870
Installation
On / over the microscope
Measurement range
0 ― 80 mm Hg
Measurement deviation
See above model AT 900
Backlash width
≤0.49 mN
Net weight
0.850 kg (without accessories)
1. Nominal value
2. Maximum limiting deviation
3. Limiting deviation of 0 to 32.66
mN: Maximum = 0.49 mN
4. Limiting deviation from 32.67
mN: Maximum = 1.5% of nomi‑
nal value
(4)
(3)
‑ 0.49 mN
+
0.49 mN
32.66 mN
0 mN
(1)
(2)
(2)
7. Maintenance
WARNING!
Installation, repairs and modifications may only be performed by trained
specialists.
7.1 Repairs
To guarantee a long service life, the device must be cleaned weekly as described
and protected with the dust cover when not in use. We recommend having the de‑
vice inspected once a year by an authorized service technician.
7.2 Cleaning and disinfection
The Haag‑Streit slit lamps and their accessories can, if required, be carefully wiped
down with ready‑for‑use disposable 70% ethanol disinfectant wipes. Surface‑friend‑
ly disinfectants (containing aldehyde or aldehyde‑free) are also permitted, such as
Kohrsolin FF.
01-IFU_AT900-7006000-04240_eng.indd 12
03.05.2018 10:11:17