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© HAAG‑STREIT AG, 3098 Koeniz, Switzerland ‑ HS‑Doc. no. 1500.7006000‑04270 – 2022 – 09
7.2 Applanation tonometer AT 870
Measuring force generated
Via spring force
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)
AT 870
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 nominal
value
8 Maintenance
WARNING!
• Installation, repairs and modifications may only be performed by
trained specialists.
• Do not repair or service the device while it is being used on the pa-
tient.
8.1 Repairs
To ensure a long service life, the device should be cleaned weekly as described.
We recommend having the device checked annually by an authorised service tech-
nician.
8.2 Cleaning and disinfection
Tonometer housing and sensor arm can, if required, be carefully wiped down with
ready-for-use disposable 70% ethanol disinfectant wipes. Surface-friendly disinfect-
ants (containing aldehyde or aldehyde-free) are also permitted, such as Kohrsolin
FF.
WARNING!
• The preparation instructions provided do not apply to tonometer
measuring prisms.
• Tonometer measuring prisms must be prepared in accordance with
a different manual.
• Comply with the stipulated exposure time.
• Observe the manufacturer's safety instructions.
• Too strong or aggressive disinfectants or cleaning liquids e.g. hydro-
gen peroxide will damage the finish and coating of the device.
• Do not use sprays.
• Do not use any towels that drip.
• Wring out any soaked towels before use when necessary.
• Ensure that no liquid penetrates the device.
NOTE!
IP code: IPX0 (device is not protected against liquids)
