Toshiba Tohsiba Electromagnetic Flowmeter Converter L5232 - Manual (Page 17)

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4.1 Cautionary Notes on Selecting the Installation
Location
(1) Avoid places within the immediate proximity of the equipment producing interference to
measurement (such as motors, transformers, radio transmitters, electrolytic cells, or other
equipment causing electromagnetic or electrostatic interference).
(2) Avoid places where excessive vibration occurs.
(3) Avoid places where there is direct sunlight as mush as possible. If this is unavoidable, provide a
sunshade, etc.
(4) Avoid places where high corrosive atmosphere or high humidity condition exists.
(5) Avoid places of too great an elevation or constricted areas and install the flowmeter in a place
easy for necessary work.
(6) The standard length of the cable that connects the detector and the converter is 30m. Select a
converter installation location so that the distance of the detector and the converter will not exceed
30m.
(7) If direct sunlight hits the display and the operation section or if there is something nearby that
easily reflects light, this kind of light becomes disturbance light and the switch operation may not
work correctly. Be careful about the installation location and angle, or take measures such as
providing a sunshade or shield plate so that disturbance light does not hit the operation section
directly.
(8) Places where there is following factors.
◆ Factors to impede infrared switch to operate properly
・ Intense light such as direct sunlight and reflected sunlight by window glass or metal plate
・ Place where brightness changes always such as ON/OFF of lighting
・ Dense smoke or steam near the control panel
・ Those attached on the control panel such as rain (dew drop), snow, ice, mud and oil, and haze due
to their attachment
・ Light reflecting object near the control panel, or reflecting object such as metal plate placed
opposing to the control panel
When any of above factors is considered, take a measure for the proper operation of infrared switch
such as to place a cover or to secure a space for at least a person to stand in front of the control panel.
When unable to avoid above factors, operate the EMF converter removing the factor by covering the
control panel by hand so that light does not shine on it, by cleaning those attached on the control panel,
or by standing in-between the reflecting object and the control panel to block the light.