4
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 ammable
atmosphere.
Do not operate the instrument in the presence of ammable gases or vapors, fumes, or nely-divided
particulates.
The instrument is designed to be used in oce-type indoor environments. Do not operate the instrument
• In the presence of noxious, corrosive, or ammable fumes, gases, vapors, chemicals, or nely-divided
particulates.
• In relative humidity conditions outside the instrument’s specications.
• 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 specied operating temperatures.
• In atmospheric pressures outside the specied altitude limits or where the surrounding gas is not air.
• In environments with restricted cooling air ow, even if the air temperatures are within specications.
• 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 20% to 80% relative humidity, with no condensation allowed.
Measurements made by this instrument may be outside specications if the instrument is used in non-
oce-type environments. Such environments may include rapid temperature or humidity changes, sunlight,
vibration and/or mechanical shocks, acoustic noise, electrical noise, strong electric elds, or strong
magnetic elds.
Do not operate instrument if damaged
If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other material gets on
or inside the instrument, remove the instrument’s power cord, remove the instrument from service, label
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