3
HPS140MK2
USER MANUAL
SAFETY INFORMATION
Overvoltage / installation categories
CAT II: A CAT II-rated meter is suitable for measurements on mono-phase appliances that are connected to the
mains by means of a plug and circuits in a normal domestic environment. E.g. household appliances, portable
tools…
Provided that the circuit is at least 10m apart from a CAT III- or 20m apart from a CAT IV-environment.
Pollution degree
Pollution degree 2: Only nonconductive pollution occurs.
Occasionally, temporary conductivity caused by condensation is to be expected. (home and office environments
fall under this category).
DURING USE
• Never exceed the limit values for protection. These values are listed in the specifications.
•
Do not touch unused terminals when the unit is linked to a circuit which is being tested.
•
When carrying out measurements on a TV set or switching power circuits, always remember that the meter
may be damaged by high amplitude voltage pulses at test points.
• Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your fingers behind the
probe barriers at all times during measurement.
•
Use a measuring probe with an insulated connector when measuring voltages exceeding 30V.
•
For X10 probe: match the frequency response to the oscilloscope input by adjusting the compensation trim-
mer on the probe, see probe manual.
PROTECTIVE POUCH FOR VELLEMAN INSTRUMENTS
HPSP1