Plusivo CL201 User manual

Mastering The Art
of Measurement
(CL201 Clamp
Meter)
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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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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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5.1.4. Resistance Measurement Specifications
Range
Max. Resolution
Accuracy
200/2k/20k/200k/2M/20M
0.1 Ω
± (1.2% reading + 5 digits)
5.1.5. Diode and Continuity Test Specifications
Diode
Open voltage: 1.999 V
Continuity
When the resistance value is less than 50 Ω, the buzzer turns on.
5.2. CL201C/CL201D Specifications
5.2.1 AC Current Measurement Specifications
Range
Max. Resolution
Accuracy
40 A / 600 A
10 mA
± (2.5% reading + 5 digits)
* Current accuracy is guaranteed when the current is over 1 A.
5.2.2 Voltage Measurement Specifications
Range
Max. Resolution
Accuracy
4V / 40V / 400V / 600V AC
1 mV
± (1.2% reading + 5 digits)
400mV/4V/40V/400V/600V DC
0.1 mV
± (0.8% reading + 5 digits)
* Voltage input impedance is 10 MΩ.
5.2.3 Frequency Measurement Specifications
Range
Max. Resolution
Accuracy
4Hz/40Hz/400Hz/4KHz/40 KHz/
400KHz/4MHz/10MHz
0.001 Hz
± (0.5% reading + 5 digits)
5.2.4. Capacitance Measurement Specifications (only for model D)
Range
Max. Resolution
Accuracy
4nF / 40nF / 400nF / 4uF /
40uF / 400uF / 4 mF
1pF
± (3% reading + 5 digits)
* Only model D can measure temperature and capacitance.
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5.2.5. Temperature Measurement Specifications (only for model D)
Range
Max. Resolution
Accuracy
-20 °C ~ +1000 °C
(-4 °F ~ +1832 °F)
1 °C/°F
± (3% reading + 5 digits)
* Only model D can measure temperature and capacitance.
5.2.6. Resistance Measurement Specifications
Range
Max. Resolution
Accuracy
400/4k/40k/400k/4M/40M
0.1 Ω
± (1.2% reading + 5 digits)
5.2.7. Diode and Continuity Test Specifications
Diode
Open voltage: 1.999 V
Continuity
When the resistance value is less than 50 Ω, the buzzer turns on.
5.3. Other Features
• Operating temperature: 0°C to 40°C at <75% RH (relative humidity)
• Storage temperature : -10°C to 50°C at <75% RH (relative humidity)
• Auto Power Off: It will automatically turn off after 15 minutes of inactivity to save power.
6. Operating Instructions
6.1 AC Current Measurement
Model A and B have two ranges: 200/600A and 2/20A. Model C and D have a range of
40A/600A only.
(1)Set the rotary switch to the desired range for AC current measurement.
(2) Pull the trigger to open the transformer clamp and clamp it on one conductor to be
tested, and then take readings on the LCD.
Note: Color of the product used in set-ups may slightly vary from the actual color due to
photographic lighting sources or your monitor settings.
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The measured current in this figure is 0.180 A AC
Note:
* Do not clamp two conductors with the converse current direction to avoid the current
counteracting with each other.
* Keep the fingers under the arc-shaped part of the clamp to ensure safety.
6.2 AC and DC Voltage Measurement
The maximum input voltage is 600V.
1) Adjust the rotary switch to the desired or positions.
2) Insert the red probe into the “V/Ω” terminal and the black probe into the “COM” terminal
to measure the DC voltage. When measuring AC voltage, insert any test leads into the
"V/Ω" and "COM" terminals.
3) Insert the red and black test leads in the positive (+) and negative (-) sides of the circuit
under test respectively for the DC voltage measurement.
4) For models C and D, pressing the "FUNC" button in the ACV measurement mode
measures the frequency (from 10 Hz to 30 kHz).
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AC Voltage Measurement: The measured voltage in this figure is 238.8 V AC
Note:
1. Do not measure a voltage over 600 V, because there is a risk to damage the instrument
circuit when the instrument is not used according to specifications.
2. When measuring a high voltage circuit, pay attention not to touch any high voltage part
of the circuit.
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DC Voltage Measurement: The measured voltage in this figure is 1.617 V DC
Note:
2. Do not measure a voltage over 600 V, because there is a risk to damage the instrument
circuit when the instrument is not used according to specifications.
3. When measuring a high voltage circuit, pay attention not to touch any high voltage part
of the circuit.
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6.3 Resistance Measurement
1) Set the Rotary Function Switch to the “Ω” position and for model B and D use the
”FUNC” key to switch the function until “Ω” is displayed (Model A and C support only
resistance measurement in that position)
2) Insert the red test lead in the “V/Ω” terminal, and the black test lead in the “COM”
terminal.
3) Read the measurement result directly from the LCD display
The measured resistance in this figure is 2.33MΩ
Note: * Considering the contact resistance of the test leads (about 0.2 - 0.3 Ω) while
measuring small resistors, connect the two leads directly and take a note of the resistance
at first, then the readings of the resistor tested should be computed minus the readings
noted.
WARNING: When checking the in-circuit resistance, be sure that the circuit under test has
all power removed and that all capacitors have been discharged fully.
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6.4. Diode & Continuity Check
1) Set the rotary function switch to the position marked and
2) Press the “FUNC” key to change to diode or continuity
*Model B has in one range and D model has in one range.
3) In the Continuity mode, connect one test lead to each end of the conductor under test.
If the resistance under test is 50 Ω or less, then the buzzer sounds.
4) Insert the red test lead in the “V/Ω” terminal and the black test lead in the "COM
terminal to measure the diode. Connect the red and black test leads to the positive and
negative terminals of the diode under test respectively. Read the measurement result on
the display, which is the positive forward voltage drop of the diode. Then, if the test probes
are connected to the diode in reverse polarity and ‘0L’ is shown on the screen, that means
the diode is OK.
The display will show the approximate forward voltage drop.
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The measured forward voltage in this figure is 0.526 V
If you connect the probes incorrectly, the display will show "0L"
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The measured forward voltage in this figure is 1.744 V
In continuity test, if a conductor path is connected and if the resistance under test is 50Ω
or less, the buzzer sounds
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6.5 Frequency Measurement (Models C and D)
When the input voltage is over 30 V, use "Hz/V" to measure.
The frequency measurement range is 0.001 Hz ~ 10 MHz with a sensitivity of 0.2 Vpp ~ 8 Vpp.
(1) Connect the frequency power source to "COM" and "VΩHz", if the wires are not suitable, test
leads are needed to test the frequency.
(2) The reading on the LCD corresponds to the tested frequency.
The measured frequency in this figure is 980.7 Hz
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