General Instructions; Safety Information; Safety Instructions; Safe Working Habits - Mastech MY70 Operation Manual

1. General instructions

The meter is designed and manufactured according to
safety requirements of EN/UL/CSA 61010-1, 61010-2-030,
61010-2-033 on electronic measuring instrument and
hand held digital multipurpose meter. The product meets
with the requirements of 600V CAT III and pollution
degree 2.
• All safety guidelines outlined should be followed, If the
equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment
may be impaired.
• Warning symbols in the manual alert users of potential
dangerous situations.
• Precautions are to prevent the user from damaging the
instrument or the test object.
WARNING:
The special attention should be paid when using the
meter because the improper usage may cause electric
shock and damage the meter .The safety measures in
common safety regulations and operating instruction
should be complied with when using. In order to make
fully use of its functions and ensure safe operations
please comply with the usage in this section carefully.

1.1 Safety information

1.1.1 Safety instructions

* When using this meter, the user should comply with the
following standard safety procedures:
- The safety procedures to prevent electric shock
- The safety procedures to prevent wrong use
* To ensure your safety, please use the test probe provided
with the meter. Before use, please check and make sure
that it is intact.
01

1.1.2 Safe working habits

* If the meter is used near a source of significant electromagnetic
interference, meter readings will become unstable and have
large errors.
* Don't use the meter or probe when it is broken.
* If you do not use the meter in accordance with the instructions,
safety functions provided by the meter may become invalid.
* When you work around the bare conductor or bus bar, you
should be extremely careful.
* Do not use the meter near explosive gas, vapor or dust.
* Measure known voltage with meter to verify that the meter is
working properly. If the meter is working abnormally, do not use.
Protective equipment may be damaged. If there is doubt,
the meter should be sent to repair.
* The meter should be used with correct input, function and
measuring range.
* When you can't determine the size range of signal to be tested,
please switch the measuring range to the maximum position.
* Input value can't exceed the input limit specified in each
measuring range to prevent damage to the meter.
* When the meter is connected to the circuit being measured,
do not touch the unused input end.
* When the voltage to be tested exceeds 60Vdc or 30Vac
effective value, please operate carefully to prevent electric
shock.
* When you measure with test probe, first connect the common
testing end of black test probe to the common testing end of
circuit to be tested, then connect red test leads to the test
circuit of the test probe to the test end of circuit to be tested.
When the measurement is completed, you should first remove
the red test probe, then remove the black common test probe.
02