HT instruments HT3320 - Manual (Page 4)

HT3320
EN - 3
1. PRECAUTIONS AND SAFETY MEASURES
The instrument has been designed in compliance with the directives relevant to electronic
measuring instruments. For your safety and in order to prevent damaging the instrument,
please carefully follow the procedures described in this manual and read all notes
preceded by the symbol
with the utmost attention.
The following symbol is used in this manual:
WARNING
When this symbol is displayed, the instrument is not able to emit a laser pointer.
Always prevent the laser from radiating to your eyes, in order to prevent
any injury. Class II laser device compliant with EN 60825-1.
1.1. PRELIMINARY INSTRUCTIONS
WARNING
• Use the instrument only as specified in this user manual. An improper use
may damage the instrument.
• During use and storage, keep the instrument away from direct sunlight or
sources of light, hot surfaces or objects, high temperatures, high humidity
or particularly critical environmental conditions.
• After a period of storage under extreme environmental conditions, let the
instrument resume normal operating conditions before using it.
• If the instrument is moved from a cold to a hot environment, some
condensation may appear on the focal lens which emits infrared rays Wait
for the condensation to dissipate before taking measurements.
• Do not touch the focal lens which emits infrared rays.
• Make sure that the target is larger than the unit’s spot size The smaller the
target, the closer you should be to it. When accuracy is critical, make sure
the target is at least twice as large as the spot size.
• Only the accessories provided together with the instrument will guarantee
safety standards. They must be in good conditions and replaced with
identical models, when necessary.
• Do not perform any measurements beyond the limits specified in chapter
11.
• Check that the battery is correctly inserted
• Do not carry out any measurement if you notice anomalous conditions such
as breakages, leakages of battery liquid, blind display, etc.
• This instrument is not recommended for use in measuring shiny or polished
surfaces (stainless steel, aluminum, etc.).
• The instrument cannot measure temperature through transparent surfaces
such as glass. The instrument will measure the surface temperature of the
glass instead.
• Steam, dust, smoke, etc. can prevent accurate measurement.