MODEL 120 TRUE RMS MULTIMETER

NOTES

1.0Introduction:

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.

2.0Specifications:

AC Voltage (Autoranging):

Range

 

Resolution

 

Accuracy

 

 

Input

Overload Protection

 

 

 

 

 

 

 

 

Impedance

 

 

 

 

 

45Hz~500Hz

 

500Hz~1KHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

400mV

 

0.1mV

 

 

 

 

 

 

 

100M ȍ

1200V peak

4V

 

1mV

 

0.5%+5

 

1%+5

 

 

10Mȍ

1200V peak

40V

 

10mV

 

0.5%+5

 

1%+5

 

 

10Mȍ

1200V peak

400V

 

100mV

 

0.5%+5

 

1%+5

 

 

10Mȍ

1200V peak

750V

 

1V

 

0.8%+5

 

1.2%+5

 

 

10Mȍ

1200V peak

AC Current (uA and mA - Autoranging):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Range

 

Resolution

 

Accuracy

 

 

Burden

Overload Protection

 

 

 

 

 

 

 

 

Voltage

 

 

 

 

 

45Hz~500Hz

 

500Hz~1KHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

10Mȍ

1200Vpeak

40V

 

10mV

 

0.3%+2

 

 

 

 

10Mȍ

1200Vpeak

400V

 

100mV

 

0.3%+2

 

 

 

 

10Mȍ

1200Vpeak

1000V

 

1V

 

0.5%+2

 

 

 

 

10Mȍ

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

1

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Monarch 120 instruction manual Introduction, Specifications, Range Resolution Accuracy, Continuity Beeper Range