1. System Installation Requirements
1-6
TI 33Q01J10-01E
Vibration
Vibration in the control room should be limited as follows:
• For vibration frequency up to 14 Hz: Limit displacement amplitude to 0.25 mm or less.
• For vibration frequency over 14 Hz: Limit acceleration to 2 m/s
2
or less.
The following is the relationship of the vibration frequency, displacement amplitude, and
acceleration:
Acceleration (m/s
2
) = 4
2
x A x F
2
x 10
-3
A: Displacement amplitude (mm)
F: Frequency (Hz)
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The allowable range of displacement amplitude is shown below. Consult our engineer if complex
vibrations are involved.
0.3
0.2
0.1
10 11 12 13 14 15 16 17 18 19 20 21
mm
Hz
Allowable range
Vibration frequency
Displacement
amplitude
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Figure Range of Allowable Displacement Amplitude
Air Purity
The dust in the control room should be kept below 0.3 mg/m
3
. Avoid corrosive gas such as
hydrogen sulfide (H
2
S), sulfur dioxide (SO
2
), chlorine, and conductive dust such as iron powder
and carbon.
The allowable content of H
2
S, SO
2
, or any other corrosive gas varies with temperatures, humidity,
or existence of other corrosive gas. Consult Yokogawa if corrosive gas exists.
Magnetic Field
Do not install the CRT near cables with heavy current flowing or in the magnetic field of a power
supply. If installed in such locations, the display may be distorted or its colors may be affected by
the magnetic fields.
May 18, 2007-00
