HT instruments HT4012 - Manual (Page 27)

HT4012
EN - 2
1. SAFETY PRECAUTIONS AND PROCEDURES
This apparatus conforms to safety standard EN 61010, relating to electronic measuring
instruments. For your own safety and that of the apparatus, you must follow the
procedures described in this instruction manual and especially read all the notes preceded
by the symbol
carefully
.
WARNING
If instrument is used in way don’t conform to prescriptions of this user’s
manual, all considered safety protection maybe damaged.
Take extreme care for the following conditions when measuring:
• Do not measure voltage, current under humid or wet environment.
• Do not operate the meter under the environment with explosive gas (material),
combustible gas (material), steam or filled with dust.
• Keep you insulated from the object waiting for measuring.
• Do not contact any exposed metal (conductive) parts such as end of test lead, socket,
fixing object, circuit, etc.
• If any unusual condition of testing end (metal part) and attachment of the meter such as
breakage, deformation, fracture, foreign substance, no display, etc., do not conduct any
measuring.
• Measuring voltage over 20V as it might cause human body electricity conduction.
• Take care not to allow your hand to pass over the Safety Guard (see Fig. 1, pos.2) on
current measurements and voltage measurements using the holster.
The followings symbols are used:
Caution: Refer to the instruction manual. Incorrect use may damage the
apparatus or its components.
Danger high voltage: risk of electric shock.
Meter double insulated.
AC Voltage or Current.
DC Voltage or Current.