4 TECHNICAL DATA
4.3 Environmental Conditions
The METIRIO is a robust device that can operate under various conditions. Due to the compact
and non encapsulated package with venting grooves comprising only low outgassing materials it
is UHV compatible.
Table 4.10: Operating conditions
Parameter Range
Operating temperature range 0
◦
C to 80
◦
C
Maximum baking temperature 150
◦
C (repeaded short term < 1h)
Ambient pressure 10
−11
mbar to 2 bar
Humidity 80 % non condensing at 40
◦
C for 96 h verified (EN 60068-2-78)
Shock 1000 m/s
2
, 11 ms half sine (EN 60068-2-27)
Vibration 500 m/s
2
, 10 - 2000 Hz sinusoidal (EN 60068-2-6)
Futher notice
• For short term operations, a temperature range from -18
◦
C to 140
◦
C is applicable but not
reccomended. However, long-term usage at high temeratures can reduce the product life-
time. Operation at low temperature and high humidity can lead to condensation on optical
surfaces and reduce the signal strength.
• If possible, use only the original packaging for storage.
• Baking cycles that are used for adhesive curing or UHV bakeout should be limited regarding
duration and cycle number to the convenient purpose.
• There is no specified limitation to the environmental polution degree. However, any con-
tamination of the optical surfaces of the readhead or the scale from fluids, particles, dust,
scratches or condensation can lead to distortion of the signal. See advises on maintenance
for further notice (Chapter 2).
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