Plusivo CL201 Manuale utente

Mastering The Art

of Measurement

(CL201 Clamp

Meter)

Mastering the Art of Measurement (CL201 Clamp Meter) r.00 www.plusivo.com

Table of Contents

Introduction 3

1. Overview 3

1.1 Versions of the clamp meter 3

1.2 Parts 4

1.3 Rotary switch 5

1.4 Key function description 6

1.5 LCD Display 6

2. Features 7

3. Safety Precautions 8

3.1 Safety specifications 8

3.2 Precautions 8

4. Reference Table 8

4.1 Table of SI units 8

4.2 Table of prefixes 9

5. Specifications 9

5.1 CL201A/CL201B Specifications 9

5.1.1 AC Current Measurement Specifications 9

5.1.2 Voltage Measurement Specifications 9

5.1.3. Temperature Measurement Specifications (only for model B) 9

5.1.4. Resistance Measurement Specifications 10

5.1.5. Diode and Continuity Test Specifications 10

5.2 CL201C/CL201D Specifications 10

5.2.1 AC Current Measurement Specifications 10

5.2.2 Voltage Measurement Specifications 10

5.2.3. Frequency Measurement Specifications 10

5.2.4. Capacitance Measurement Specifications (only for model D) 10

5.2.5. Temperature Measurement Specifications (only for model D) 11

5.2.6. Resistance Measurement Specifications 11

5.2.7. Diode and Continuity Test Specifications 11

5.3 Other Features 11

6. Operating Instructions 11

6.1 AC Current Measurement 11

6.2 AC and DC Voltage Measurement 12

6.3 Resistance Measurement 15

6.4 Diode & Continuity Check 16

6.5 Frequency Measurement (Models C and D) 19

6.6 Capacitance Measurement (D only) 20

6.7 Temperature Measurement (B and D. Use FUNC to switch °C/°F) 21

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6.8 NCV Detection (“EF” is shown when there is no measurement) 22

6.9 REL (relative) measurement (CL201D only) 24

7. Basic Concepts 26

7.1 Ohm's Law 26

7.1.1 Example 26

7.2 Joule's Law for Electrical Power 28

7.2.1 Example 29

7.3 Kirchhoff's Law 31

7.3.1 Kirchhoff's Current Law 31

7.3.2 Kirchhoff's Voltage Law 31

7.3.3 Example 32

7.4 Shunt resistor 36

7.4.1 Example 37

7.5 Choosing the Right Resistor for an LED 39

7.5.1 Example 40

7.6 Measuring Internal Resistance of a Battery 41

7.6.1 Example 42

7.7 Testing Some Components Using clamp meter 44

7.7.1 Potentiometer Test 44

7.7.2 BJT Transistor Test 46

Important Note: 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

inquiries and assistance, please reach us via email address: of[email protected]

To know more about our other products, please visit us in our official pages:

www.plusivo.com

https://www.facebook.com/plusivo/

Mastering the Art of Measurement (CL201 Clamp Meter) r.00 www.plusivo.com

Introduction

In this guide, you are going to learn how to measure AC and DC voltage, AC current,

resistance, diodes, capacitance, frequency, NCV measurement, temperature and continuity test

using a clamp meter. 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.

Let’s get started!

1. Overview

1.1 Versions of the clamp meter

The CL201 NCV clamp meter series includes 4 models, they are named CL201A,

CL201B, CL201C and CL201D. These clampmeters support RMS measurements and they

have a frequency response range up to 2 KHz.

The versions that we will be discussing in this book are the CL201A and CL201D clamp meters.

Mastering the Art of Measurement (CL201 Clamp Meter) r.00 www.plusivo.com

1.2 Parts

(1) Clamp

(2) NCV indicator (red LED)

(3) Rotary switch - used for choosing

the function range

(4) HOLD / Backlight (BL) button

(5) “MAX” button for model A, “REL”

button for model D

(6) Function button

(7) Trigger to open and close the

clamp

(8) LCD Screen

(9) Input terminal for voltage,

resistance, temperature, capacitance

and frequency

(10) “COM” Input terminal

(11) NCV sensing area

Mastering the Art of Measurement (CL201 Clamp Meter) r.00 www.plusivo.com

1.3 Rotary switch

Below you can see functions of the rotary switch for both versions.

AC current measurement up to 600 A

AC current measurement up to 20 A / 2 A

AC Voltage measurement

DC Voltage measurement

Resistance measurement

AC Current measurement

Diode/Continuity measurement

NCV

Non Contact Voltage measurement

Capacitance / Resistance / Continuity / Diode

Temperature measurement

Frequency

OFF

Instrument turned OFF

Mastering the Art of Measurement (CL201 Clamp Meter) r.00 www.plusivo.com

1.4 Key function description

CL201A Buttons

CL201D Buttons

FUNC

Function Key

HOLD/BL

Hold Function / Back Light

MAX

Maximum value measurement mode

REL

Relative measurement

1.5 LCD Display

Alternating current measurement

Direct current measurement

Auto-range mode

Auto power oﬀ indicator

Low battery

Mastering the Art of Measurement (CL201 Clamp Meter) r.00 www.plusivo.com

Hold function activated

Voltage measurement

Current measurement

Frequency

MAX-MIN

Maximum and minimum value

Capacitance

REL

Relative measurement

2. Features

● AC Current measurement range of 0.1 A ~ 600 A for model A and B (1999 counts)

● AC Current measurement range of 0.1 A ~ 600 A for model C and D (3999 counts)

● Maximum opening distance of the clamp jaw of 25 mm

● Autoranging

● Model A and B have a 3 and 1/2 digit LCD (1999 counts)

● Model C and D have a 3 and 3/4 digit LCD (3999 counts)

● Non-Contact Voltage (NCV) detection

● 600 V input voltage protection

● Auto Power-OFF

● HOLD function

● Peak measurements (only for model A and B)

● Relative value measurement function (only for model C and D)

● Temperature measurement (only for model B and D)

● Frequency measurement (only for model C and D)

● Capacitance measurement (only for model D)

● Over load indication: “0L” symbol displayed when exceeding the measuring range

● Low battery indication: The “ ” symbol is displayed

● Power supply: 3 V, 2 x 1.5 V AAA batteries

Mastering the Art of Measurement (CL201 Clamp Meter) r.00 www.plusivo.com

3. Safety Precautions

3.1. Safety Specifications

All products in this series comply with the safety requirements of IEC 61010-1, IEC

61010-031:2002 and IEC 61010-2-032 Measurement Category (CAT.) II 600 V overvoltage

protection standard.

3.2. Precautions

● Do not use the instrument on a circuit in which the voltage exceeds AC 600 V.

● Do not use the device in the presence of flammable gases.

● Do not use the device above 2000 m above sea level.

● Do not use the device at temperatures lower than 0 °C or higher than 40 °C.

● Before using this instrument check whether it has been damaged during transportation or

storage.

● Before use, check whether the insulation of the test probes has been damaged and

whether the wire conductor is exposed. The test probes must be in good condition.

● When using this instrument please observe the standard safety rules:

- general electric shock prevention rules

- instrument misuse prevention rules

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. Reference Table

4.1 Table of SI units

Quantity

SI Unit

Abbreviation

Voltage

Volts

Current

Ampere

Power

Watt

Energy

Joule

Electric charge

Coulomb

Resistance

Ohm

Capacitance

Farad

Inductance

Henry

Frequency

Hertz

Mastering the Art of Measurement (CL201 Clamp Meter) r.00 www.plusivo.com

4.2 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 (u)

10−6

1 millionth

Nano (n)

10−9

1 billionth

Pico (p)

10−12

1 trillionth

5. Specifications

5.1 CL201A/CL201B Specifications

5.1.1 AC Current Measurement Specifications

Range

Max. Resolution

Accuracy

2 A

1 mA

± (3% reading + 5 digits)

20 A

1 mA

± (2% reading + 5 digits)

200 A / 600 A

0.1 A

± (2% reading + 5 digits)

* Current accuracy is guaranteed when the current is over 1 A.

5.1.2 Voltage Measurement Specifications

Range

Max. Resolution

Accuracy

2V / 20V / 200V / 600V AC

1 mV

± (1.2% reading + 5 digits)

200mV/2V/20V/200V/600V DC

0.1 mV

± (0.8% reading + 5 digits)

* Voltage input impedance is 10 MΩ.

5.1.3. Temperature Measurement Specifications (only for model B)

Range

Max. Resolution

Accuracy

-20 °C ~ +1000 °C

(-4 °F ~ +1832 °F)

1 °C/°F

± (3% reading + 5 digits)

Mastering the Art of Measurement (CL201 Clamp Meter) r.00 www.plusivo.com

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