Yokogawa DR240 - Manual (Page 43)

3-2 IM DR231-01E
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 (5˚ to 45˚C, when the recorder includes a floppy disk drive)
• Ambient humidity: 20 to 80%RH for 0 to 40
°C, 10 to 50%RH for 40 to 50°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 equilibrium
with 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
DR130/DR231
Can be used on a desk-top, installed on the floor, or rack-mounted. Always install the instrument
vertically.
• Desk-top or floor installation
Install the instrument vertically on a horizontal flat floor as shown below.
• Rack mounting
The following fitting can be supplied for rack mounting.
Name Model Description
Rack mount fitting DV400-013 Conforming to ANSI/EIA, for DR231
Rack mount fitting DV400-015 Conforming to ANSI/EIA, for DR130
• External dimensions and rack mounting dimensions for the DR130 and DR231 are shown
below.
• To install the rack mount fitting on the instrument, remove the screws at the right and left
forward of the instrument and use the mounting screws attached to the rack mount fitting.
Be careful that right and left screws have different lengths. The screw at the right when
facing the front of the instrument is M4 of 20 mm long and the left screw is M4 of 16 mm
long. Appropriate tightening torque is 1.4 to 1.5 N·m (14 to 15 kgf·cm).
• If another instrument is to be mounted under this instrument in an ANSI/EIA rack, remove
the prong or brackets designated with 1 and 2 in the figure below because they may interfere
with both instruments.