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IM 760201-01E
Before You Start Measuring
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App
Index
3.2 Installing the Instrument
Installation Conditions
Install the instrument in an indoors environment that meets the following conditions.
Flat, Even Surface
Install the instrument on a surface that is flat and even in all directions. If you install the
instrument on an uneven or tilted surface, the accuracy of its measurements may be
impeded.
Well-Ventilated
Inlet holes are located on the top and vent holes are located on the bottom of the
instrument. To prevent internal overheating, allow at least 20 mm of space around the
inlet and vent holes.
When connecting measurement wires and other various cables allow extra space for
operation.
Appropriate Ambient Temperature and Humidity
Ambient temperature: 5 to 40°C
Ambient humidity: 20 to 80% RH
No matter what the circumstances, there must be no
condensation.
Do not install the instrument in the following kinds of places.
• In direct sunlight, or near sources of heat
• In an environment with excessive amounts of soot, steam, dust, or corrosive gases
• Near strong magnetic fields
• Near high voltage equipment or power lines
• In a place that is subject to large levels of mechanical vibration
• On an u
nstable surface
Note
• For the most accurate measurements, use the instrument in the following kind of
environment.
Ambient temperature: 23 ± 5°C Ambient humidity: 30 to 75%RH (no condensation)
When using the instrument in a place where the ambient temperature is 5 to 18°C or 28 to
40°C, add the temperature coefficient to the accuracy as specified in chapter 14.
• When installing the instrument in a place where the ambient humidity is 30% or below, take
measures to prevent static electricity such as using an anti-static mat.
• Condensation may form when the instrument is moved from a low temperature/humidity
environment to a high temperature/humidity environment, or when there is a sudden change
in temperature. In these kinds of circumstances, wait for at least an hour before using the
instrument, to acclimate it to the surrounding temperature.
Storing the Instrument
When storing the instrument, avoid the following kinds of places.
• Where the relative humidity is 80% or higher
• Where the level of mechanical vibration is high
• In direct sunlight
• Where there are corrosive or explosive gasses
• Where the temperature is 60°C or higher
• Where an excessive amount of soot, dust, salt, or iron is present
• Near a strong source of heat or moisture
• Where water, oil, or chemicals may splash
We recommend that the instrument be stored in an environment where the temperature
is between 5 and 40°C and the relative humidity is between 20 and 80% RH.
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