Mastech MS8233A User manual

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CAT.II

600 V

AUTO MAX

04

1.SAFETY INFORMATION

This multimeter has been designed according to IEC61010-1

concerning electronic measuring instruments with an

overvoltage category (CAT II) and pollution 2.

Follow all safety and operating instructions to ensure that the

meter is used safely and is kept in good operating condition.

Full compliance with safety standards can be guaranteed only

with test leads supplied. If necessary, they must be replaced

with the type specified in this manual.

1.2Maintenance

• Before opening the case, always disconnect test leads

from all energized circuits.

• For continue protection against fire; replace fuse only

with the specified voltage and current ratings:

250mA/250V(Quick Acting)

10A/250V(Quick Acting)

• Never use the meter unless the back cover is in place

and fastened completely.

• Do not use abrasives or solvents on the meter. To clean

it using a damp cloth and mild detergent only

1.1Safety symbols

Important safety information, refer to the

operating manual.

Dangerous voltage may be present

Anti-garbage

Double insulation (Protection class II).

Fuse must be replaced with rating specified

in the manual.

03

1.3 During use

• Never exceed the protection limit values indicated in

specifications for each range of measurement.

• When the meter is linked to measurement circuit, do not

touch unused terminals.

• Never use the meter to measure voltages that might

exceed 600V above earth ground in category II

installations.

• When the value scale to be measured is unknown

beforehand, set the range selector at the highest

position.

• Before rotating the range selector to change functions,

disconnect test leads from the circuit under test.

• When carrying out measurements on TV or switching

power circuits always remember that there may be high

amplitude voltages pulses at test points, which can

damage the meter.

• Always is careful when working with voltages above 60V

dc or 30V ac rms. Keep fingers behind the probe barriers

when making voltage measurements with test leads.

• Never perform resistance measurements on live circuits