iii
Unless otherwise stated, a ground connection on the instrument's front or rear panel is for a
reference of potential only and is not to be used as a safety ground.
Do not operate in an explosive or flammable atmosphere
Do not operate the instrument in the presence of flammable gases or vapors, fumes, or finely-
divided particulates.
The instrument is designed to be used in office-type indoor environments. Do not operate the
instrument
• In the presence of noxious, corrosive, or flammable fumes, gases, vapors, chemicals, or
finely-divided particulates.
• In relative humidity conditions outside the instrument's specifications.
• In environments where there is a danger of any liquid being spilled on the instrument or
where any liquid can condense on the instrument.
• In air temperatures exceeding the specified operating temperatures.
• In atmospheric pressures outside the specified altitude limits or where the surrounding
gas is not air.
• In environments with restricted cooling air flow, even if the air temperatures are within
specifications.
• In direct sunlight.
This instrument is intended to be used in an indoor pollution degree 2 environment. The
operating temperature range is 0 °C to 40 °C and the operating humidity is ≤ 90 % relative
humidity at < 35 °C and ≤ 60 % relative humidity at 35 °C – 40 °C, with no condensation allowed.
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