8
3. Intended use
3.1 Operating and storage conditions
Operating temperature
1
- 10 °C
… + 60 °C (special type - 40 °C … + 60 °C)
Storage temperature
- 40 °C
… + 70 °C
Humidity
15 %
… 90 %, non-condensing
1
Depending on the type of device
Explanation: The values specified as operating temperature descripe the temperature range in which the LLD
can be used according to the specification.
The operating temperature refers to the internal temperature of LLD and could be approx….
10 kelvins above the ambient temperature (see EN 60204-1).
If LLD-500 operates near the upper limit of temperature range (ambient temperature > 40
°C), the probability of measuring errors will be increased
.
A permanent operation of LLD-500 at higher temperatures (ambient temperature > 40 °C)
shortens the lifetime of the sensor. For permanent operation of LLD-500 it is recom-
mended not to exceed an operation temperature of 50 °C, which correlates to a maximum
ambient temperature of 40 °C.
3.2 Improper use and possible error sources
•
The unit may be used only as prescribed.
•
Please do not remove any labels and type plates.
•
Repair work must not be performed by the user. In case of questions or doubt, the manufacturer is to
be consulted. For contact data see section 2.5.
•
In order to obtain correct measuring values the following advice is to be observed:
1.
Measurements against the sun or onto surfaces with low reflectivity in very bright
environments can result in faulty measurements.
2.
Measurements through glass, optical filters, Plexiglas or other translucent materials are possible to
a limited extent but can result in measurement errors.