4.2.10 AC current
±(1.5% Reading + 3 digits)
Overload protection:
protective tube for mA measuring range (FF630mA/250V) ;
protective tube for 20A measuring range (10A/250V) .
Maximal input current: mA position: 600mA DC/AC (valid value);
20A position: 20A DC/AC (valid value)
When the measured current is10A~20A, must use another 20A test lead
MT-9908.This test lead is not included
When the measured current is over 5A, the duration of continuous
measurement shall not be over 10 seconds. The current measurement shall
be carried out 1 minute after the completion of previous measurement.
Frequency response: 40Hz-1kHz True RMS
4.2.11 Temperature (depends on different model, only for
the instruments with it)
Overload protection: 600V DC/AC
5. Meter maintenance
This section provides the basic information on maintenance, including the
descriptions about replacement of protective tubes and batteries. Do not
attempt the meter maintenance unless you are experienced in maintenance
and have read the information on calibration, performance test and
maintenance. .
5.1 General maintenance
To avoid any electric shock or damage to the meter, do not
attempt to clean the inside of the meter. You must remove
the line connecting a test lead to input signals, before
opening the case or battery cover.
You must regularly use damp cloth and a small quantity of detergent to
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