【1】SAFETY INFORMATION

1-5

The following are precautions to prevent accidents such as
electrical shocks.
Be sure to read them before using the CLAMP METER.
1-1 Symbols
The following cautionary signs appear on the clamp meter and in thismanual.
Disobediance to instructions with this sign may lead to troublesof the clamp meter and accidents such as electrical shock.
Application around and removal from HAZARDOUS LIVE
conductors is permitted.
1-2 Maximum Overload Protection Input (within 5 sec.)Range
ACA 6−15
ACA 60−150
ACA 600
ACV 150,DCV 60
ACV 300−600
Ω ×1−×100

Maximum overload protection input
AC 60 AAC 600 A
AC 750 A
AC,DC 600 V
AC 750 V
230 V(fuse blown)【2】APPLICATIONThis is an AC clamp meter designed for measuring small to medium
capacity cable runs of low voltage. It is suitable for measurement ofalternating current in electric equipment and power supplies.

【3】NAME OF COMPONENT UNITS

Precautions for Safety Measurement

WARNINGTo ensure that the meter is used safely, follow all safety andoperating instructions.
Protection circuit may be undermined by unjustifiable usage that
does not the guidelines in the instruction manual.
11. This meter is a clamp meter exclusive for low voltage. Use it
only for circuits of 600 V or below. If it is used for measuring
the circuit exceeding 600 V, it may cause electrical shock or
damage to the meter.
12. Pay special attention when measuring the voltage of AC 33
Vrms (46.7 Vpeak) or DC 70 V or more to avoid injury.
13. Never apply an input signal exceeding the maximum input value.
14. Never use meter if it is damaged or broken.
15. During testing, never hold the iron core side of the meterahead of its barrier.
16. Test leads:
・Be sure to use the specified model of test leads.
・Never use the test bar or cord that is damaged.
・During testing, never hold the test pin side of the test bar
ahead of its finger guard.
17. In case of the models using fuses, be sure to use a fuse of
the specified rating and type.
Never use a substitute of the fuse or never make a short,circuit with a lead wire.
18. Never use meter in the state that its case or battery cover is taken off.
19. Be sure to disconnect the test pins from the circuit whenchanging the function or range.
10. Before starting measurement, make sure that the function
and range are properly set in accordance with the measurement.
11. Never use meter with wet hands or in a damp environment.
12. Never open meter case except when replacing batteries orfuses. Do not attempt any alterations of original specifications.
13. To ensure safety and maintain accuracy, calibrate and checkthe meter at least once a year.
14. When making an measurement of distorted AC wave shapeother than AC sinusoidal wave.
Pay attention not to become the state of overload, since thevalue may be indicated (displayed) less than an actual value.
15. Indoor use.

Iron core top

Iron core

Iron core spacecentering markBarrier（FREE）
Pointer lock lever（LOCK）

Iron core lever

Range selector knob
V terminal

0 Ωadjuster knobΩ terminal

CAM600S

Common terminal

ANALOG CLAMP METER

Pointer

Zero position adjuster

Zero line

Meter coverHand strap

INSTRUCTION MANUAL
Printed in Japan【4】MAINTENANCE

4-3
WARNING

1. This section is very important for safety. Read and understandthe following instruction fully and maintain your instrument
properly.
2. The instrument must be calibrated and inspected at least oncea year to maintain the safety and accuracy.
4-1 Maintenance and Inspection
・Is the appearance not damaged by falling?
・Is the test leads not damaged?
If your instrument falls in any of the above items, do not use it andhave it repaired or replace it with a new one.
4-2 Storage
CAUTION

Battery and Fuse Replacement
WARNING

1. If the rear case or the battery lid is removed with input applied
to the input terminals, you may get electrical shock. Before
starting the work, always make sure that no input is applied.
2. Before starting the work, be sure to release the test leads fromthe circuit.
〈How to Replace〉①Remove the battery lid screw with a screwdriver.
②Remove the battery lid.
③Take out the battery or fuse and replace it with a new one.
④Attach the battery lid and fix it with the screw.

Fuse
F500 mA/250 V (6.3×32 mm)

1. The panel and the case are not resistant to volatile solvent andmust not be cleaned with thinner or alcohol. For cleaning, use
dry soft cloth and wipe it lightly.
2. The panel and the case are not resistant to heat.
Do not place the instrument near heat-generating devices(such as a soldering iron).
3. Do not store the instrument in a place where it may be subjected
to vibration or from where it may fall.
4. For storing the instrument, avoid hot, cold or humid places orplaces under direct sunlight or where condensation is anticipated.
Following the above instructions, store the instrument in goodenvironment. (See 5-2)

removethe screw

remove thebattery lid

WARNING・Be sure to disconnect the test lead from the measuring terminals
for preventing electric shock.
・If a current to measure can not be estimated, first measure itwith the meter in the 150 A or 600 A range, then change it toa suitable range.
2) Measurement Procedure①Set the range select knob to the proper ACA range according
to the magnitude of the current to be measured.
②Press the iron core lever to open the iron core. Then, place
the conductor to be measured at the center of the iron core.
Let go of the iron core lever to fully close the iron core.
③Read the indication on the scale ("A" scale).
006 A range — scale 0〜60 multiplier ×0.1
060 A range — scale 0〜60 multiplier ×1
600 A range — scale 0〜60 multiplier ×10
015 A range — scale 0〜15 multiplier ×1
150 A range — scale 0〜15 multiplier ×10④After measurement, remove the iron core from the conductor.

【6】MEASUREMENT PROCEDURE

5-1

6-1

Measurement Range and Accuracy(23 ℃±5 ℃, 80 ％RH max. No condensation)
Range

Tolerance

ACA 〜

6−15−60−150−600±3 ％against f.s.
300 A or more
±4 ％ against f.s.

ACV 〜

150−300−600±3 ％against f.s.

DCV 〜

60

±3 ％
against f.s.

Ω

1 k − 100 k（×1）（×100）±3 ％scale length

center 30Ω-3 kΩbattery 1.5 V×1℃(Temp.)（−10〜200 ℃）±3.5 ％
scale lengthwith optional probe(model T-THP)（

Remarks）

Battery (R03)

Note

General Cautions on Measuring Current

sine wave
50,60 Hz・Close the ends of the iron core (CT) completely. Otherwise,
an error may occur.
・AC current measurement does not apply to the frequencies
other than sinusoidal 50 Hz〜60 Hz.
・Clamp only one conductorNG
for measurement.
Clamping 2 or more
conductors leads toerroneous measurement.
・If placed close to a conductor
Good
carrying a large current or in astrong m agnetic field, the meter may indicate a current
value with no conductor clamped (an error is produced).
・Treat with good care the tops of the core. Open and close them
gently by means of the core lever.
Do not snap it open or shut. The core tops can get damaged
to cause erroneous reading.
・Place a conductor to measure in the center of the CT (near thecalibration point reference marks).
If it is clamped in a position far from the center, a maximumof ±3 ％ error may occur.
・If a large current is applied, vibration noise may be heard fromthe CT. It is not a problem.

:φ36 mm or 10×50 mm: Moving coil type. 183μA: Half-wave rectification: The circuit is proected by fuse even when voltage of up to AC 230 V
is impressed on each range for 5 seconds.
＊Built-in battery : R6 (IEC) or UM-3 1.5 V×1: F500 mA L/250 V, φ6.3×32 mm Fast acting fuse.
・Internal fuse・Applicable circuit voltage : AC 600 V or less・Withstand voltage : AC 5550 V between iron core and rear case (1min.)・Service ambient condition : Altitude 2000 m max., environmental pollution II, indoor use
・Operating temperature/humidity range: 0〜40 ℃, 80 ％ RH max. no condensation
・Storage temperature/humidity range: −10〜＋50 ℃, 70 ％ RH max. no condensation
・Dimension and Mass : 221 (H) ×97 (W) ×43 (D) mm・420 g: Test lead (TL-21a) 1. Carrying case (C-CAM6) 1. Instruction manual 1.
・Accessories
Spare fuse (0.5 A/250 V, φ6.3×30 mm) 1.
・Optional accessories : Temperature probe (model T-THP)

6-5

Measuring Voltage
WARNING・Never apply an input signals exceeding the maximum rating
input value.
・Be sure to disconnect the test pins from the circuit whenchanging the range.
・Always keep your fingers behind the finger guards on the test
leads when making measurements.
・Never use meter in the state that its case or battery cover istaken off.
6-5-1 Measuring DCV(max. DC 60 V)
1) Applications
Measures batteries and DC circuits.
2) Measurement Procedure①Set the range select knob to "DC 60 V"②Put in the black pin plug to the "COM" terminal and red pin plugto the "V" terminal.
③Apply the black test pin to the minus potential side of the circuit
to be measured and the red test pin to the plus potential side.
④Read the indication on the scale ("V" scale 0〜600). multiplier×0.1⑤After measurement, remove the red and black test pins fromthe circuit measured.

How to Use Lock Lever
conductor

6-6

Measuring Ω (max. 100 kΩ)
WARNING
Never apply voltage to the "Ω" terminal.

1) Application
Resistance of resistors and circuits are measured.
2) Measurement Procedure①Set the range select knob to the proper Ω range according
to the magnitude of the current to be measured.
②Put in the black pin plug to the "COM" terminal and red pin
plug to the "Ω" terminal.
③Short the red and black test pins and turn the 0 Ω adjuster
knob so that the pointer may align exactly to 0 Ω. (If thepointer fails to swing up to 0 Ω even when the 0 Ω adjuster
is turned clockwise fully, replace the internal battery with afresh one.)④Apply the red and black test pins to an object to measure.
⑤Read the indication on the scale ("Ω" scale)

00×1 range — scale 1 k〜0 multiplier ×1
×100 range — scale 1 k〜0 multiplier ×100

General Caution on Measuring Resistance

6-7 Measuring Temperature ℃ (−10〜200 ℃) :6-7 （with the optional probe "model T-THP")
1) Measuring method①Set the meter in the resistance (Ω) X100 range and connect
the black test pin of the temperature probe to the common
measuring terminal (COM).
②Insert the tip metal part of the temperature probe in the resistancemeasuring terminal (Ω) and adjust the meter indication to the0 Ω point with the 0 Ω adjuster.
③Change the connection to the resistance measuring terminal(Ω) to the red test pin of the temperature probe.
④Apply the tip metal part of the temperature probe to an area tomeasure for temperature. When the indication has become stable,
read an indicated value on the temperature scale.("℃" scale)

1. Be sure to make startup inspection prior to use.
2. Do not use the meter if the body or test leads are damaged or
broken.
3. Make sure the test leads are not cut or the fuse is not blown.*＊The meter is OK if the meter pointer moves when the red and black
test pins are brought into contact in the resistance range. Refer to
6-6 Measuring Resistance (Ω).
Note, however, the pointer may not move if the incorporated
battery have been consumed.
6-2 Preparation for Measurement①Unlock the meter pointer. (Set the lock lever to FREE.)②Check to see if the meter pointer is positioned on the 0 graduationline (heavy line on the left end). If not, adjust it with a screwdriver.
③Make measurement following the explanation of measurement(ACA,ACV,DCV,Ω,℃).
6-3 Ending Measurement①If the test leads are connected to the measuring terminals,
disconnect them.
②Set the range select switch to ACA 600.
③Lock the meter pointer. (Set the lock lever to LOCK.)＊Factory-preinstalled built-in battery
A battery for monitoring is preinstalled before shipping, therefore
it may run down sooner than the battery life specified in the
instruction manual.
The "battery for monitoring" is a battery to inspect the functions
and specifications of the product.

6-5-2 Measuring ACV 〜 (max. AC 600 V)
1) Application
Measures sine-wave a.c. voltages such as commercial power line.
2) Measurement Procedure①Set the range select knob to the proper ACV range according
to the magnitude of the voltage to be measured.
②Put in the black pin plug to the "COM" terminal and red pin plugto the "V" terminal.
③Apply the red and black test pins to the circuit to measure.
④Read the indication on the scale ("V" scale)
150 V range — scale 0〜150
300 V range — scale 0〜300
600 V range — scale 0〜600⑤After measurement, remove the red and black test pins fromthe circuit measured.

CAUTION・Locking the pointerWhen taking measurement in places where indicated values
are hard to read, the pointer lock lever may be used to lockthe pointer for easy reading.
FREE・When the lock lever is pushed up,
Lock lever
the pointer is released.
LOCK
When the lever is pulled down, thepointer is locked at the indicating
position.

・TheΩ range terminals release voltage is about 1.5 V.
・The polarity of ＋ and − turns reverse to that of the test
leads when measurement is done inΩ range.
・Be sure to use the same rated fuse.
In case a fuse other than the same rated one is used, error inindication occurs and/or circuit protection is made unable.
・If a test pin is touched by a finger during measurement,
measurement will be influenced by the resistance in thehuman body to result in measurement error.

Startup inspection
WARNING

Function

5-2 Others
・Max. clamp size
・Meter・AC rectification
・Circuit protection

・Fuse replacement
Pry up the metal part of the fuse using the pin of a test lead orother tool to remove the fuse.
・A spare fuse is attached to the inside of the battery lid.

6-4 Measuring ACA〜 (max. AC 600 A)
1) Applications
It is suitable for measurement of alternating current in electric
equipment and power supplies.

【5】SPECIFICATIONS・If a voltage to measure can not be estimated, first measure itwith the meter in the 600 V range, then change it to a suitable
range.
・This instrument employs the average measurement system andsome error is made to the indication of waveforms other thansine waves.
・The accuracy guaranteed frequency range is 50〜60 Hz.
・When measuring a voltage, be sure to connect the test leadsin parallel to a load.

【7】After-Sales Service
7-1 Warranty and Provision
Sanwa offers comprehensive warranty services to its end-users andto its product resellers. Under Sanwa's general warranty policy,
each instrument is warranted to be free from defects inworkmanship or material under normal use for the period of one (1)year from the date of purchase.
This warranty policy is valid within the country of purchase only,
and applied only to the product purchased from Sanwa authorized
agent or distributor.
Sanwa reserves the right to inspect all warranty claims todetermine the extent to which the warranty policy shall apply. This
warranty shall not apply to fuses, disposables batteries, or any
product or parts, which have been subject to one of the following
causes:
1. A failure due to improper handling or use that deviates from the
instruction manual.
2. A failure due to inadequate repair or modification by people otherthan Sanwa service personnel.
3. A failure due to causes not attributable to this product such as
fire, flood and other natural disaster.
4. Non-operation due to a discharged battery.
5. A failure or damage due to transportation, relocation or dropping
after the purchase.
7-2 Repair
Customers are asked to provide the following information whenrequesting services:
1. Customer name, address, and contact information
2. Description of problem
3. Description of product configuration
4. Model Number
5. Product Serial Number
6. Proof of Date-of-Purchase
7. Where you purchased the product1) Prior to requesting repair, please check the following:
Capacity of the built-in battery, polarity of installation anddiscontinuity of the test leads.
2) Repair during the warranty period:
The failed meter will be repaired in accordance with theconditions stipulated in 6-1 Warranty and Provision.
3) Repair after the warranty period has expired:
In some cases, repair and transportation cost may become
higher than the price of the product. Please contact Sanwa
authorized agent / service provider in advance.
The minimum retention period of service functional parts is 6
years after the discontinuation of manufacture. This retention
period is the repair warranty period. Please note, however, if
such functional parts become unavailable for reasons of
discontinuation of manufacture, etc., the retention period may
become shorter accordingly.
4) Precautions when sending the product to be repaired
To ensure the safety of the product during transportation, place
the product in a box that is larger than the product 5 times ormore in volume and fill cushion materials fully and then clearlymark “Repair Product Enclosed” on the box surface. The cost ofsending and returning the product shall be borne by thecustomer.
7-3 SANWA web site
http://www.sanwa-meter.co.jp
E-mail: exp_sales@sanwa-meter.co.jp