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41/2-manual Range Bench-Type Digital Multimeter

DM-1140B

Block Diagram

Specification

Spec.

Range

Resolution

Accuracy

Remarks

DCV

200mV

10uV

±(0.05%reading+3)

Input impedance: 10MΩ for all ranges;

Overload protection: 200mV range: 250VDC or AC peak value. Other range: 1000V DC or AC peak value.

2V

100uV

20V

1mV

200V

10mV

1000V

100mV

±(0.1%reading+5)

ACV(T-RMS)

200mV

10uV

±(0.8%reading+80)

50Hz–50kHz

The input value for accuracy guarantee should be larger than 10% of full range.

Input impedance: 2MΩ for all ranges.

Overload protection：200mV range: 250V DC or AC peak value, other range: 1000V DC or AC peak value.

2V

100uV

50Hz–20kHz

20V

1mV

200V

10mV

50Hz–5kHz

750V

100mV

±(1.0%reading+50) / 50Hz–400Hz

DCA

20mA

1uA

±(0.35%reading+10)

Max. input voltage drop: 200mV

Max. input current: 20A（within 10s）

Overload protection: 2A/250V fuse，13A/250V fuse

200mA

10uA

2A

100uA

±(0.8%reading+10)

20A

1mA

ACA(T-RMS)

200mA

10uA

±(0.8%reading+80)

Max. input voltage drop: 200mV

Max. input current: 20A（within 10s）

Overload protection: 2A/250V fuse，13A/250V fuse

2A

100uA

±(1.0%reading+50)

20A

1mA

Resistance

200Ω

0.01Ω

±(0.1%reading+20)

Open circuit voltage: less than 3V

Over load protection: 250V DC or AC peak value;

NOTE: At range 200 Ω, short-circuit the test leads to measure the wire resistance and then subtracts it from the real measurement.

2kΩ

0.1Ω

±(0.1%reading+5)

20kΩ

1Ω

200kΩ

10Ω

2MΩ

100Ω

20MΩ

1kΩ

±(0.5%reading+5)

Frequency

20kHz

1Hz

±(1.0%reading+20)

Input sensitivity: 500mV rms

Overload protection: 250V DC or AC peak value（within 15s）

200kHz

10Hz

Capacitance

20nF

1pF

±(3.5%+20)

Measuring frequency: approx. 400Hz

Measuring voltage: approx. 40mV,

Overload protection: 36V DC or AC peak value

2uF

100pF

200uF

10nF

±(5%+30)

hFE

Range	Displaying	Test condition
hFE NPN or PNP	0～1000.0	Base current is approx. 10μA，Vce is approx. 3V.

Diode &

Continuity

Range	Description	Test condition
	The measuring value is the approx. value for forward voltage drop. When the resistance under tested is less than 30Ω±10Ω, buzzer sounds and display the approx. value. The open circuit voltage is approx. 3V.	Forward DCA is approx. 1mA, backward DCV is less than 3V.
Overload protection: 250V DC and AC peak value.

Power

AC 220V/110V, 50Hz/60Hz

Size

245×220×98mm

Net weight

1.4kg

Features

● 4 1/2digits(19999count), bench type, large LCD of white backlight, easy to read.

● Manual Range operation

● Sample Rate : 3 times per sec

● Overload protection

● With basic DCV, ACV, DCA, ACA, Ω, CAP, Hz, hFE, Diode and Continuity measuring functions.

● Voltage test range up to 1000V DC or peak-peak value AC, resolution up to 10uV.

● Current test range up to 20A, auto polarity shift, data hold.

● AC measuring adopts high accuracy true RMS, measuring broadband and AC+DC function, enabling accurate measuring of virtual value of AC by any waveform.