
Operating Precautions
7
Handling the Instrument
To avoid electric shock, do not remove the instrument's cover and panel.
The internal components of the instrument carry high voltages and may
become very hot during operation.
•Do not allow the instrument to get wet, and do not take measurements
with wet hands. This may cause an electric shock.
•Do not use the instrument where it may be exposed to corrosive or com-
bustible gases. The instrument/ device/ product may be damaged or
cause an explosion.
• To avoid damage to the instrument, protect it from physical shock when trans-
porting and handling. Be especially careful to avoid physical shock from drop-
ping.
• The instrument’s sensor unit consists of precision optical components. Drop-
ping the sensor unit or subjecting it to mechanical shock may cause operation
to diverge from its accuracy specifications. An inspection is necessary in the
event the instrument is subject to mechanical shock.
• The upper limit of the instrument’s measurement range is 100,000 lx.
Do not expose the instrument to light in excess of 100,000 lx. Doing so may
cause degradation of the sensor unit’s internal optical components.
• This instrument is designed for use indoors. It can be operated at tempera-
tures between 5 and 35°C without degrading safety.
• Do not store or use the instrument where it could be exposed to direct sunlight,
high temperature or humidity, or condensation. Under such conditions, the
instrument may be damaged and insulation may deteriorate so that it no longer
meets specifications.
• This instrument is not designed to be entirely water- or dust-proof. Do not use
it in an especially dusty environment, nor where it might be splashed with liq-
uid. This may cause damage.
• This instrument is not drip-proof. Water droplets on the connector may result in
malfunctions.
• Do not allow the instrument to get wet, and do not take measurements with wet
hands. This may cause an electric shock.
• Do not use the instrument near a source of strong electromagnetic radiation, or
near a highly electrically charged object. These may cause a malfunction.
• Do not use the instrument in the vicinity of induction heating equipment (high-
frequency induction heating equipment, induction heating cooktops, etc.).
Doing so may damage the instrument or cause fire.
Correct measurement may be impossible in the presence of strong magnetic
fields, such as near transformers and high-current conductors, or in the pres-
ence of strong electromagnetic fields such as near radio transmitters.