MODEL 120 TRUE RMS MULTIMETER
1
1.0 Introduction: This instrument is a true RMS autoranging digital multimeter capable of measuring AC voltage
and current, DC voltage and current, resistance, continuity, frequency, RPM, temperature and
capacitance. It is also equipped with a diode testing feature. The instrument complies with
IEC 1010-1 1000V CAT III.
AC Voltage (Autoranging):
Accuracy
Range
Resolution
45Hz~500Hz 500Hz~1KHz
Input
Impedance
Overload Protection
400mV 0.1mV 100M
ȍ
1200V peak
4V 1mV 0.5%+5 1%+5
10M
ȍ
1200V peak
40V 10mV 0.5%+5
1%+5 10M
ȍ
1200V peak
400V 100mV 0.5%+5
1%+5 10M
ȍ
1200V peak
750V 1V 0.8%+5
1.2%+5 10M
ȍ
1200V peak
AC Current (uA and mA - Autoranging):
Accuracy
Range Resolution
45Hz~500Hz 500Hz~1KHz
Burden
Voltage Overload Protection
400uA 0.1uA
1.3%+5 1.6%+5
<0.25Vrms 0.5A / 600V Fast Blow Fuse
4000uA 1uA
1.3%+5
1.6%+5
<1Vrms 0.5A / 600V Fast Blow Fuse
40mA 10uA
1.3%+5
1.6%+5
<0.25Vrms 0.5A / 600V Fast Blow Fuse
400mA 100uA
1.3%+5
1.6%+5
<1.5Vrms 0.5A / 600V Fast Blow Fuse
20A 10mA
1.5%+5 1.8%+5
<1Vrms 15A / 600V Fast Blow Fuse
DC Voltage (Autoranging):
Range
Resolution
Accuracy
Input Impedance
Overload Protection
400mV 0.1mV 0.3%+2 100M
ȍ
1200Vpeak
4V 1mV 0.3%+2
10M
ȍ
1200Vpeak
40V 10mV 0.3%+2
10M
ȍ
1200Vpeak
400V 100mV 0.3%+2
10M
ȍ
1200Vpeak
1000V 1V 0.5%+2 10M
ȍ
1200Vpeak
DC Current (uA and mA - Autoranging):
Range
Resolution
Accuracy
Burden Voltage
Overload Protection
400uA 0.1uA 0.8%+2 <0.25V 0.5A / 600V Fast Blow Fuse
4000uA 1uA 0.8%+2
<1V 0.5A / 600V Fast Blow Fuse
40mA 10uA 0.8%+2
<0.25V 0.5A / 600V Fast Blow Fuse
400mA 100uA 0.8%+2
<1.5V 0.5A / 600V Fast Blow Fuse
20A 10mA 1%+2 <1V 15A / 600V Fast Blow Fuse
Resistance (Autoranging):
Range
Resolution
Accuracy
Test Voltage
Overload Protection
400
ȍ
0.1
ȍ
0.6%+2 <1.5VDC 600Vrms
4K
ȍ
1
ȍ
0.6%+2
<1.5VDC 600Vrms
40K
ȍ
10
ȍ
0.6%+2
<1.5VDC 600Vrms
400K
ȍ
100
ȍ
0.6%+2
<1.5VDC 600Vrms
4M
ȍ
1K
ȍ
0.6%+2
<1.5VDC 600Vrms
40M
ȍ
10K
ȍ
1%+3 <1.5VDC 600Vrms
Continuity Beeper:
Range
Active Range
Test Voltage
Overload protection
Under 40
ȍ
<1.5V 600Vrms