General General General Instructions Instructions; Preliminary; During Use - Mastech my68 Instruction Manual

1. 1. 1. 1. GENERAL GENERAL GENERAL GENERAL INSTRUCTIONS INSTRUCTIONS INSTRUCTIONS INSTRUCTIONS
This instrument complies with IEC 1010-1 (61010-1@IEC:
2001), CAT. II 1000V and CAT. III 600V overvoltage standards.
See Specifications.
To get the best service from this instrument, read carefully this
user's manual and respect the detailed safety precautions.
International symbols used on the Meter and in this manual
are explained in chapter 1.1.3
1.1 1.1 1.1 1.1 Precautions Precautions Precautions safety Precautions safety safety safety measures measures measures measures
1.1.1 1.1.1

Preliminary

Preliminary
1.1.1 Preliminary 1.1.1 Preliminary
* Measurement category III is for measurements performed in
the building installation.
NOTE: Examples are measurements on distribution boards,
circuit-breakers, wiring, including cables, bus-bars, junction
boxes, switches, socket-outlets in the fixed installation, and
equipment for industrial use and some other equipment, for
example, stationary motors with permanent connection to
the fixed installation.
* Measurement category II is for measurements performed on
circuits directly connected to the low voltage installation.
NOTE: Examples are measurements on household
appliances, portable tools and similar equipment.
* Measurement category I is for measurements performed on
circuits not directly connected to MAINS.
NOTE: Examples are measurements on circuits not derived
from MAINS, and specially protected (internal) MAINS
derived circuits. In the latter case, transient stresses are
variable; for that reason, requires that the transient
withstand capability of the equipment is made known to the
user.
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* When using this Multimeter, the user must observe all
normal safety rules concerning:
― protection against the dangers of electric current.
― protection of the Multimeter against misuse.
* For your own safety, only use the test probes supplied with
the instrument. Before use, check that they are in good
condition.
1.1.2 During use
1.1.2 During 1.1.2 1.1.2 During

During use

use use
* If the meter is used near noise generating equipment, be
aware that display may become unstable or indicate large
errors.
* Do not use the meter or test leads if they look damaged.
* Use the meter only as specified in this manual; otherwise,
the protection provided by the meter may be impaired.
* Use extreme caution when working around bare conductors
or bus bars.
* Do not operate the meter around explosive gas, vapor, or dust.
* Verify a Meter's operation by measuring a known voltage.
Do not use the Meter if it operates abnormally. Protection
may be impaired. When in doubt, have the Meter serviced.
* Uses the proper terminals, function, and range for your
measurements.
* When the range of the value to be measured is unknown,
check that the range initially set on the multimeter is the
highest possible or, wherever possible, choose the
autoranging mode.
* To avoid damages to the instrument, do not exceed the
maximum limits of the input values shown in the technical
specification tables.
* When the multimeter is linked to measurement circuits, do
not touch unused terminals.
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