Plusivo CL201 User manual
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/
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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.
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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
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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
A
AC Current measurement
/
Diode/Continuity measurement
NCV
Non Contact Voltage measurement
Capacitance / Resistance / Continuity / Diode
Temperature measurement
Hz
Frequency
OFF
Instrument turned OFF
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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
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Hold function activated
V
Voltage measurement
A
Current measurement
Hz
Frequency
MAX-MIN
Maximum and minimum value
F
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
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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
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
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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)
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Table of contents
