Plusivo DM501D User manual

Mastering The Art of
Measurement
User Guide for the Plusivo
DM501D Multimeter
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Table of Contents
Introduction 2
1. Overview 2
2. Parts 3
2.1 Rotary Switch / Function Knob 4
2.2 Function keys description 5
2.3 LCD 5
3. Safety Information 6
4. Technical Specifications 7
5. Reference Table 8
5.1 Table of SI Units 8
5.2 Table of Prefixes 8
6. Instrument Specifications 8
6.1 DC Voltage 9
6.2 AC Voltage 9
6.3 Resistance 9
6.4 Diode and Buzzer Test 9
6.5 Direct Current DCA 10
6.6 Alternative Current ACA 10
6.7 Frequency 10
6.8 Capacitance 10
6.9 Temperature 11
7. Operation Instruction 11
7.1 AC and DC Voltage Measurement 11
7.2 Resistance Measurement 13
7.3 Diode Measurement 14
7.4 Buzzer Test or Continuity 15
7.5 Frequency Measurement 16
7.6 Current Measurement 16
7.7 Capacitance Measurement 18
7.8 Non Contact Voltage (NCV) Test 19
7.9 Temperature Measurement 20
8. Basic Concepts 21
8.1 Ohm's Law 21
8.1.1 Example 21
8.2 Joule's Law for Electrical Power 24
8.2.1 Example 24
8.3 Kirchhoff's Law 26
8.3.1 Kirchhoff's Current Law 26
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8.3.2 Kirchhoff's Voltage Law 27
8.3.3 Example 27
8.4 Shunt Resistor 31
8.4.1 Example 32
8.5 Choosing the Right Resistor for an LED 34
8.5.1 Example 35
8.6 Measuring Internal Resistance of a Battery 37
8.6.1 Example 38
8.7 Testing Some Components Using Multimeter 40
8.7.1 Potentiometer Test 40
8.7.2 BJT Transistor Test 42
Introduction
In this guide, you are going to learn how to measure AC/DC voltage, AC/DC current, resistance,
capacitance, diode temperature and continuity test using DM501D 6000 Counts Autoranging T-RMS
Digital Multimeter. We are going to study some basic concepts like Ohm's Law and Kirchhoff's Law.
Please note that product color may slightly vary due to photographic lighting sources or your monitor
settings.
1. Overview
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The meter is a multi-functional instrument with high measurement accuracy, fast response and
high safety level. Embedded in a dedicated IC up to 6000 counts, this IC consists of a high-precision A/D
converter with a high-speed digital processor that can perform high-speed true-rms calculation for 1 kHz
AC.
The appearance of the whole instrument is aesthetic and suitable for various industrial
applications. The circuit is safe and reliable. The whole meter has a variety of measurement functions
and a friendly HMI. It can meet the needs of various application groups such as professional and
maintenance engineers.
This meter can be used to measure AC/DC voltage, AC/DC current, resistance, capacitance,
diode temperature and continuity test. The meter is equipped with a backlight that allows users to read
the display in a dark place. It is the best choice for professional electricians, enthusiasts and families.
Please take the time and read the printed operating instructions manual that is inside the
kit before use and pay attention to the safety information and retain them for future reference.
Failure to follow these instructions may lead to serious injury and damage to property.
In general, if something unusual happens or if you suspect that something is wrong or has
malfunctioned, do not do anything with the product and immediately contact the seller for assistance
(email address: of[email protected])
2. Parts
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2.1 Rotary switch / Function Knob
OFF
Instrument turned OFF
,
AC/DC Voltage measurement
Temperature measurement
Resistance/Diode/Continuity measurement
Capacitance Measurement
Hz%
Frequency measurement
,
AC/DC Current measurement
NCV
Non Contact Voltage measurement (NCV)
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2.2 Function keys description
FUNC/Hz
Function selection mode
HOLD
Hold Function for data or reading retention
MAX
Maximum value measurement mode
Backlight / FlashlightFunction
2.3 LCD
Alternating current measurement
Direct current measurement
Negative input polarity
Low battery indicator
Automatic measurement
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Diode measurement
Buzzer / Continuity measurement
Hold function activated
NCV
NCV test activated
Auto power offindicator
mV, V
Voltage unit
μA, mA, A
Current unit
Ω, kΩ, MΩ
Resistance unit
MKHz
Frequency unit
mF, nF, μF
Capacitance unit
,
Temperature measurement (Celsius, Fahrenheit)
3. Safety Information
* When using this meter, the user must follow all standard safety precautions in the following two
aspects.
• Electric shock protection
• Prevention of misuse of instrument safety procedures
* For your personal safety, please use the test pen supplied with the meter, check before use to make
sure they are not damaged.
To avoid possible electric shock, personal injury or other accidents, please follow the instructions
specified in the printed DM501D manual that comes with the DM501D Multimeter kit purchase.
● Please read this manual carefully before using the instrument and pay attention to the safety
information.
● Strictly observe the operating instructions in this manual before using it. Otherwise, the protective
function of the device may be damaged or weakened.
Complete safety instructions can be found in the DM501D manual that is inside the Multimeter Kit.
Input protection measures
● The limit voltage is 600 V in voltage measurement.
● The voltage limit is 250 ACV or equivalent RMS voltage when measuring frequency, resistor,
buzzer or diode.
● Fuse (F200mA/250 V) to protect when measuring μA and mA.
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Before opening the case or the battery cover, the meter and input signal must be turned off to avoid
electric shock or damage to the instrument.
In general, if something unusual happens or if you suspect that something is wrong or has
malfunctioned, do not do anything with the product and immediately contact the seller for assistance
(email address: of[email protected])
4. Technical Specifications
● Environmental conditions of use:
CAT. III 600 V
Pollution level: 2
Altitude < 2000 m
Working environment temperature and humidity:
0~40°C (<80% RH, <10°C non condensing)
Storage environment temperature and humidity:
-10~60°C (<70% RH,remove the battery)
● Temperature coefficient: 0.1 x accuracy/°C (<18°C or >28°C)
● MAX. Voltage between terminals and earth ground: 600 V
● Fuse protection: mA: F600 mA/250 V fuse, 10 A: F10 A/250 V fuse
● Conversion rate: 3s/second
● Test or calibrate surrounding temperature: 20°C±2°C
● Sampling rate: about 3 times/second
● Display: 6000 counts LCD display with LED backlight. Automatically displays the unit symbols
according to the shift of the measurement function.
● Over range indication: it displays "OL".
● Low battery indication: when the battery voltage is lower than the normal working voltage " "
will be displayed.
● Input polarity indication: automatically displays " - ".
● Power requirement: 3 x 1.5 V AAA batteries.
● Dimension: 147 mm (L) x 71 mm (W) x 45 mm (H).
● Weight: about 220g (battery excluded)
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5. Reference Table
5.1 Table of SI units
Quantity
SI Unit
Abbreviation
Voltage
Volts
V
Current
Ampere
A
Power
Watt
W
Energy
Joule
J
Electric charge
Coulomb
C
Resistance
Ohm
Ω
Capacitance
Farad
F
Inductance
Henry
H
Frequency
Hertz
Hz
5.2 Table of prefixes
Prefix
Power
Numeric Representation
Tera (T)
1012
1 trillion
Giga (G)
109
1 billion
Mega (M)
106
1 million
Kilo (k)
103
1 thousand
No prefix
100
1 unit
Milli (m)
10−3
1 thousandth
Micro (μ)
10−6
1 millionth
Nano (n)
10−9
1 billionth
Pico (p)
10−12
1 trillionth
6. Instrument Specifications
Accuracy specifications
The accuracy applies within one year after the calibration.
Reference condition: the environment temperature is 18°C to 20°C, the relative humidity is no more than
80%.
Accuracy: ± (% reading + word)
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6.1 DC Voltage
Range
Resolution
Accuracy
600 mV
0.1 mV
± (0.5% + 5)
6 V
1 mV
60 V
10 mV
600 V
100 mV
Input resistance: 10 MΩ
Maximum input voltage: 600 V
6.2 AC Voltage
Range
Resolution
Accuracy
600 mV
0.1 mV
± (1% + 4)
6 V
1 mV
60 V
10 mV
600 V
100 mV
Input resistance: 10 MΩ
Maximum input voltage: 600 V
Frequency response: 10 Hz to 1 kHz, TRMS
6.3 Resistance
Range
Resolution
Accuracy
600 Ω
0.1 Ω
±(0.8% readings + 5 digits)
6 kΩ
1Ω
60 kΩ
10 Ω
600 kΩ
100 Ω
6 MΩ
1 kΩ
60 MΩ
10 kΩ
Overload protection: 250 V DC/AC
Open circuit voltage: 2.4 V
6.4 Diode and Buzzer Test
The display shows the forward voltage drop
It buzzes when the resistor is less than 30 and the indicator lights
Overload protection: 250 V DC/AC
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