Keysight U2741A Guide D'utilisation page 5

Environmental Conditions
This instrument is designed for indoor use and in an area with low condensation.
The table below shows the general environmental requirements for this instrument.
Environmental cond ition
Temperature
Humidity
Altitude
Pollution degree
Overvoltage category
[a] From 40 °C to 55 °C, the maximum % Relative Humidity follows the line of constant dew point.
Keysight U2741A User's Guide
Requirement
Operating condition
0 °C to 55 °C
Storage condition
–40 °C to 70 °C
Operating condition
95% RH up to 40 °C, decreases linearly to 45% RH at 55 °C
[a]
(non-condensing)
Storage condition
Up to 95% RH at 40 °C (non-condensing)
Up to 2,000 m
Pollution Degree 2
II
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