Yokogawa DR240 - Manual (Page 47)

3-2 IM DR232-01E
3.2 How to Install
Installation Conditions
The instrument must be installed in a location where the following conditions are met.
Ambient temperature and humidity
• Ambient temperature: 0 to 50 °C
However, in case you mount the AC power supply model subunits DS400/DS600 directly to a
panel, or if you apply the DIN rail, or mount them in a rack, it is possible to use them in a range
of –10 to 60
°C.
WARNING
• When the environmental temperature is 50
°
C or more, the temperature
of the rear panel may rise to more than 70 ° C. Thus, touching the rear
panel under these circumstances has the danger of sustaining burns.
• To prevent a fire, always use the instrument in a vertical position, and
do not block the upper side of the modules (a space of at least 3cm is
necessary).
• Ambient humidity: 20 to 80%RH for –10 to 40
°C, 10 to 50%RH for 40 to 50°C, 5 to 30%RH
for 50 to 60
°C (However, no condensation should be present.)
• Installation location: Room
• Installation height: Altitude up to 2,000 m
Note
Internal condensation may occur if the instrument is moved to another place where both the ambient
temperature and humidity are higher, or if the temperature changes rapidly. In case of thermocouple input,
this might result in erroneous measurements. In those cases, allow the instrument to achieve eqailibrium
with to its new environment for at least one hour before starting operation.
Never install the instrument in any of the following locations:
• in direct sunlight or near heat sources
• where an excessive amount of soot, steam, dust or corrosive gases are present
• near strong magnetic field sources
• near high voltage equipment or power lines
• where the level of mechanical vibrations is high
• in an unstable place
Installation Method
DR232
Can be used on a desk-top, installed on the floor, or rack-mounted. Always install the instrument
vertically.
• saDesk-top or floor installation
Install the instrument vertically on a horizontal flat floor as shown below.