Contents
How to Select and Buy a Good Digital Multimeter
What is a Digital Multimeter?
A digital multimeter, or DMM, measures and verifies multiple electrical quantities, including voltage, current and resistance.
It’s a daily diagnostic tool used by technicians and electrical engineers and combines the features of a voltmeter, ammeter and ohmmeter.
A digital multimeter typically includes probes, clamps or leads, which are inserted into inputs on the instrument and then connected to the device under test to make a measurement.
DMM: 3¾ Digital Multimeter:-
- Measure Direct Current Voltage, Alternate Current Voltage, Direct Current resistance,capacitance,frequency and temperature.
- 3¾ Digital multimeter with maximum reading of 3999
- Measure resistance,capacitance.
- frequency and temperature
- Tests diode, transistor and continuity
- Data hold
- Range selection automatic and manual
- Large LCD display (Size 70X50mm)
- Low battery indication
- Auto power off
- Full overload protection(Indicator)
- Shock proof protection.
DIGITAL MULTIMETER: FEATURES.
Basic Function and Ranges
Digital Voltmeter
Range: 400mV / 4V / 40V / 400V / 1000V
Accuracy: ±(0.5%+4)
Alternate Voltage:
Range: 400mV / 4V / 40V / 400V / 750V
Accuracy: ±(0.8%+6)
Direct Current:
Range: 40 mA / 400 mA / 10A
Accuracy: ±(1.0%+6)
Alternate Current:
Range: 400 uA / 4000 uA / 40mA / 400 mA / 10A
Accuracy: ±(1.5%+10)
Resistance
Range: 400 ohm / 4k ohm / 40 kohm / 400k ohm /4M ohm / 40 Mohm
Accuracy: ±(0.8%+4)
Capacitance
Range: 4nF / 40nF / 400nF / 4uF / 40uF / 200uF
Accuracy: ±(2.5%+6)
Frequency
Range: 100Hz / 1000Hz / 10kHz / 100kHz / 1MHz / 30MHz
Accuracy: ±(0.5%+4)
Celsius: (-40 ~ 1000)ºC ±(1.0%+5)
Input impedance: 10M ohm
Sampling rate: 3times/s
Alternate Current Frequency response: (40-400)Hz
Operation way: Auto range
Max. Display: 3999
Liquid Crystal Display Size: 70X50mm
Battery: 3V (1.5VX2) AAA size
