2-3
IM WT310-02EN
Making Preparations for Measurements
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App
Index
2.2 Installing the Instrument
Installation Conditions
WARNING
• Do not install the instrument outdoors or in locations subject to rain or water.
• Install the instrument so that you can immediately remove the power cord if an abnormal or
dangerous condition occurs.
Install the instrument in an indoors environment that meets the following conditions.
Flat, Even Surface
Use the instrument on a stable surface that is level in all directions. If you use the instrument on an
unstable or tilted surface, the accuracy of its measurements may be impeded.
Well-Ventilated Location
Inlet and vent holes are located on the top and 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.
CAUTION
If you block the inlet or outlet holes on the instrument, it will become hot and may break down.
Ambient Temperature and Humidity
Ambient temperature: 5 to 40°C
Ambient humidity:
20 to 80% RH
(No condensation)
Do Not Install the Instrument in the Following Places
• Outdoors.
• In direct sunlight or near heat sources.
• Where the instrument is exposed to water or other liquids.
• Where an excessive amount of soot, steam, dust, or corrosive gas is present.
• Near strong magnetic field sources.
• Near high voltage equipment or power lines.
• Where the level of mechanical vibration is high.
• On an unstable surface.
Note
• For the most accurate measurements, use the instrument in the following kind of environment.
Ambient temperature: 23°C ± 5°C
Ambient humidity: 30% RH to 75% RH (no condensation)
When using the instrument in a place where the ambient temperature is 5°C to 18°C or 28°C to 40°C, add the
temperature coefficient to the accuracy as specified in chapter 7.
• When installing the instrument in a place where the ambient humidity is 30% or less, take measures to
prevent static electricity such as using an anti-static mat.
• Condensation may occur if the instrument is moved to another place where the ambient temperature or
humidity is higher, or if the temperature changes rapidly. In these kinds of circumstances, wait for at least an
hour before using the instrument, to acclimate it to the surrounding temperature.
