Pro'sKit MT-1220, User Manual

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The buzzer beeps when the resistance is less than
30

Overload protection: 250V DC/AC
4.2.5 hFE Test
Functions Value Testing conditions
NPN or PNP 0~2000
Basic current is approx.
10uA,Vce is approx.2.8V
4.2.6 DC Current
Measuring range Resolution Accuracy
2mA
（
only MT-1220
）
0.001mA
±(1% R 5 digits) 20mA 0.01mA
200mA 0.1mA
10.00A 10mA ±(3.0% R 10 digits)
Overload protection:
protective tube for mA measuring range (F200mA/250V) ;
protective tube for 10A measuring range (F10A/250V) .
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.
4.2.7 Temperature (only MT-1225)
Measuring range Resolution Accuracy
-20
～
1000 1 ±(1.0% R 3 digits)
Overload protection: 250V 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
clean the meter's shell. Don't attempt the use of any abrading or chemical