Yokogawa Touch Screen GP20 - Manual (Page 18)

16
IM 04L51B01-02EN
Installation and Wiring
Installation Location
Install the GX/GP indoors in an environment that
meets the following conditions:
• Instrumentation panel
The GX10/GX20 excluding the portable type (GP10/
GP20) is designed to be installed in an instrumentation
panel.
• Well-ventilated location
To prevent overheating, install the GX/GP in a well-
ventilated location. For the panel cut dimensions when
arranging multiple GXs, see the next page. When
other instruments are installed next to the GX, follow
the panel cut dimensions to provide adequate space
around the GX. In the case of the portable type, we
recommend that you provide at least 50 mm of space
from the left, right, and top panels.
• Minimal mechanical vibrations
Install the GX/GP in a location that has minimal
mechanical vibrations. Installing the GX/GP
in a location that is subject to large levels of
mechanical vibration will not only put added stress
on its components, it may also impede ordinary
measurement.
• Level Location
Install the GX/GP in a level location so that it is not
slanted to the left or the right (however, the GX/GP
can be inclined up to 30 degrees backward for panel
mounting).
Note
Condensation may form when moving the GX/GP from
a low temperature or humidity environment to a high
temperature or humidity environment, or when there is a
sudden change in temperature. Temperature or humidity
changes may also result in thermocouple measurement
errors. In these kinds of circumstances, wait for at least
an hour before using the GX/GP, to acclimate it to the
surrounding environment.
The GP20 may tip over if it is tilted more than 10
degrees, front and back.
Do Not Install the Instrument in the Following Places
• Outdoors
• In direct sunlight or near heat sources
Install the GX/GP in a place that is near room
temperature (23°C) and that is not subject to large
temperature fluctuations. Placing the GX/GP in direct
sunlight or near heat sources can cause adverse
effects on the internal circuitry.
• Where an excessive amount of soot, steam, moisture,
dust, or corrosive gases are present
Soot, steam, moisture, dust, and corrosive gases will
adversely affect the GX/GP. Avoid installing the GX/GP
in such locations.
• Near strong magnetic field sources
Do not bring magnets or instruments that produce
electromagnetic fields close to the GX/GP. Operating
the GX/GP near strong magnetic fields can cause
measurement errors.
• Where the display Is difficult to see
The GX/GP uses an LCD screen, so it is difficult to
view the display from an extreme angle. Install the GX/
GP so that the user can view the display directly from
the front.
Installation Procedure
Installation Procedure for the GX10/GX20
Use a steel panel that is 2 mm to 26 mm thick.
1
Insert the GX through the front of the panel.
2
Mount the GX to the panel using the included
mounting brackets as described below.
• Use two mounting brackets to support the top and
bottom or the left and right sides of the case (remove
the stickers that are covering the holes before you
attach the brackets).
• The recommended tightening torque for the mounting
screws is 0.7 to 0.9 N•m.
• Follow the procedure below to mount the GX to the
panel.
• First, attach the two mounting brackets and
temporarily tighten the mounting screws.
• Next, fix the GX in place by tightening the mounting
screws with the appropriate torque. When the GX is
approximately perpendicular to the panel, press the
mounting brackets so that they are in contact with
the case, and fully tighten the mounting screws.
• Using more than the appropriate
torque to tighten the screws can de-
form the case or damage the brackets.
• Be sure not to insert foreign objects
or tools into the case through the
mounting bracket holes.
• When you attach the rubber pack-
ing, be sure that no portion of it gets
wedged between the GX and the
panel. If the rubber packing is not
attached properly, you will not be able
to achieve sufficient dust proofing or
waterproofing.
Note
To achieve sufficient dust proofing and waterproofing,
mount the GX in the middle of the panel cut out.