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Sanwa Multimeter PM33a

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Sida 1/1

1. This section is very important for safety. Read and

understand the following instructions fully and maintain

your instrument properly.

2. The instrument must be calibrated and inspected at

least once a year to maintain its safety and accuracy.

1) Applications: Testing the quality of diodes.

2) How to use

1 Set the function switch to the / / position.Ω

2 Select “ ” by pressing the SELECT button.

3 Apply the black test pins to the cathode of the diode

and the red test pin to the anode.

4 Make sure that the display shows a diode forward

voltage drop.

5 After replacing the red and black test pins, connect

the red test pin to the cathode of the diode and

connect the black test pin to the anode.

6 Make sure display is the same as when the test lead

is not connected (OL indication).

Note:

Successful co mpletion of st eps 4 and 5

indicates tha t there is no problem with the

diode.

7 After measurement, release the red and black test

pins from the object measured.

1) Applications: Measuring the capacitance of low leakage

condenser such as film condenser.

2) How to use

1 Set the function switch to the position.

2 Apply the red and black test pins to a conductor to

measure.

3 Read the value on the display.

4 After measurement, release the red and black test

pins from the object measured.

3 Re p la ce b ot h of t he t wo b at t er ie s in t h e b a t t e ry

compartment with new ones.

4 Place the battery compartment cover and tighten the

fixing screws.

• About the batteries when shipped from the factory

The bat teries incorporated when shipped from t he

factory are monitor batteries, so their service life may be

shorter than that of brand-new batteries. A monitor

battery is a type of battery used to check the functions of

and performance of the product.

1 R e m o v e t h e t w o f i x i n g s c r e w s f r o m t h e b a t t e r y

compartment cover.

2 Slide the batt ery compartment cover downward t o

remove it.

1) Applications: Measuring the resistance of resistors and

circuits.

2) Measurement procedure

1 Set the function switch to the / / position.Ω

2 Apply the red and black test pins to an object to

measure.

3 The reading is shown in the display.

4 After measurement, release the red and black test

pins from the object measured.

When the position of this instrument is changed

during DCA measurement, the display may fluctuate

due to geomagnetism.

Because the AC sensoring system of this instrument

is an average value system, an error in the measured

value will occur wit h waveforms other than sine

waves.

Accu r a cy is g ua r a n t ee d in A C A mea su reme n t

between 40 ~ 400 Hz.

Measurement of an inverter power supply circuit may

cause a malfunction.

The open voltage of the input terminals is almost the

same as the battery voltage.

①

②⑤ ⑤

③

④

Extension cord

If measurement is likely to be influenced by noise,

shield the object to measure with negative potential

( C O M ) . I f a f i n g e r t o u c h e s a t e s t p i n d u r i n g

measurement, measurement will be influenced by

the resistance in the human body, and that results in

measurement error.

Open circuit voltage: Approx. 0.78 V in 660 Ω range

Approx. 1.2 V in other range

Resistance cannot be measured when voltage is

present.

Never apply voltage to the input terminals.

WARNING

Max. rating input value

DC 600.0 V

AC 600.0 V

1. Make sure that no low battery indication appear in the

display.

2. Never use meter if the meter or test leads are damaged

or broken.

3. Check continuity of test leads.

WARNING

DC/AC 100 A

Voltage input

prohibited

Correct measurement may not be possible in areas

exposed to strong magnetic fields generated by electrical

equipment such as a transformer or large current path,

electromagnetic waves generated by wireless equipment,

or areas where electrostatic charges are generated.

This instrument may malfunction or may not be able to

take correct measurements with special waveforms such

as those produced by an inverter circuit.

Display in REL measurement

DC 3.000 V

DC 0.000 V

DC -2.000 V

100 A DC/AC

①

③

⑤

Conductor to

be measured

(electrical wire)

Current

direction

④

②　

Center

position

marking

Barrier

Clamp Sensor

Current direction

marking

Barrier

1) Applications

DCV: Vo l t a g e o f t h e b a t t e r y a n d D C c i r c u i t a r e

measured.

ACV: Sine wave AC voltage, such as lighting voltage, is

measured.

2) Measurement procedure

1 Set the function switch to the “V” position and select

either DCV or ACV with the SELECT button.

2 Apply the red and black test pins to the circuit to

measure.

• For measurement of DCV, apply the black test pin to

the negative potential side of the circuit to measure

and the red test pin to the positive potential side.

• For measurement of ACV, apply the red and black

test pins to the circuit to measure.

3 The reading of voltage is shown on the display.

4 After measurement, release the red and black test

pins from the object measured.

Readings are unstable when test leads are opened.

Accuracy is guaranteed in the case of sine wave.

The frequencies where accuracy is guaranteed in the

ACV measurement are 40 ~ 100 Hz in the 660 mV

range and 40 ~ 400 Hz in other ranges.

Although the terminals to be measured are short-

circuited in the AC 660 mV and AC 6.6 V ranges, up

to 10 counts may remain in the AC 660 mV range

and up to 7 counts may remain in the AC 6.6 V

range.

Measurement of an inverter power supply circuit may

cause a malfunction.

Max. rating input value

66.00 kHz

(600 Vrms or less)

Measurement range

660.0 Hz, 6.600 kHz, 66.00 kHz

20.0 % ~ 80.0 % at 50/60 Hz

Function

Hz/DUTY

600 V DC/AC

To ensure the meter is used safely, be sure to observe the

instructions when using the instrument.

Never use meter on the electric circuits that Exceed 3.6 kVA.

Pay special attention when measuring voltages of AC 33

Vrms (46.7 V peak) or DC 70 V or more to avoid injury.

3. The clamp sensor provided with this instrument is

exclusively for low-voltage use. Perform clamp current

measurement with 600 V or less lines.

4. Never apply an input signal exceeding the maximum

rating input value.

Never use meter for measuring the line connected with

equipment (i.e. motors) that generates induced or surge

voltage since it may exceed the maximum allowable voltage.

Never use meter if the meter or test leads are damaged or broken.

7. Never use uncased meter.

Always keep your fingers behind the finger guards on the probe

1. The clamp sensor of this instrument is exclusively for low

voltage. Perform the clamp current measurement on a

line with 600 V or less.

2. Do not turn the function switch during measurement.

3. During measurement, do not hold the clamp sensor at

any point beyond the barrier.

4. To prevent electric shock, be sure to store the test probe

and test lead in their designated storage compartments.

1. Never apply an input signal exceeding the maximum

rating input value.

2. Do not turn the function switch during measurement.

3. Do not hold the test probe by a section closer to the test

pin side behind the finger guard.

Never apply voltage to the input terminals.

When high resistance is measured, the displayed value

may fluctuate due to external induction.

Hz / DUTY

Ω/ /

Voltage and current

input prohibited

DCA · ACA

[1]

SAFETY PRECAUTIONS Before use, read the following safety precautions.

This instruction manual explains how to safely use your new

PM33a digital multimeter with clamp sensor. Before use, please

read this manual thoroughly. After reading it, keep it together

with the product so you can refer to it when necessary.

Using this product in ways not specified in this manual may

damage its protection function.

Instructions given under the “ WARNING” and “ CAUTION”

headings must be followed to prevent accidental burns or

electrical shock.

1-1 Explanation of Warning Symbols

The meanings of the symbols used in this manual and on the

product are as follows.

Very important instruction for safe use.

The warning messages are intended to prevent accidents

to operating personnel such as burn and electrical shock.

The caution messages are intended to prevent damage to

the instrument.

: Direct current (DC) : Ground 〜:

Alternating current (AC)

: Capacitance : Resistance : FrequencyΩ Hz

: Continuity : Duty cycleDUTY

: Diode

Double insulation (Protection Class II)

: Plus input (Red)

: Minus input (Black)

1-2 Warning Instruction for Safe Use

WARNING

Function Input

terminals

Maximum rating

input value

Maximum overload

protection input

1-3 Overload Protections

DCV · ACV DC/AC 600 V

Clamp

sensor

section

additional functions, as well as enabling measurement of small type

communication equipment, electrical home appliances, lighting

voltage and batteries of various types.

A current clamp sensor is also provided that can measure up to 100

A DC/AC, allowing measurement of the electric consumption of

equipment that uses an automotive battery or AC power supply. This

can be done by simply clamping a single line of electrical wiring in

the device being measured.

2-2 Features

•

The inst r ume n t is compa c t a nd ligh t weigh t a nd h a s b e e n

designed in accordance with the safety standard EN 61010-1.

•

Provided with a current clamp sensor that can measure up to 100

A DC/AC.

•

The clamp sensor has a thin U-shaped sensor design that is 7 mm

thick. Also because the inclination angle of the sensor is variable

between 0 ° and 180 °, the display section of the main unit can be

adjusted to an easy-to-view angle.

•

Provided with RANGE hold, MAX/MIN hold, REL/ZERO and DATA

HOLD functions that are convenient for measurement.

•

When the Hz/DUTY measurement function is used during the

activation of the ACV/ACA function, the frequency and duty ratio

of the signals that are being measured can also be measured.

•

Provided with an Auto Power Off function (approx. 30 min.), which

can also be canceled.

•

The storable sections of the test leads and test probes use an

elastomeric material that is easy to wind and store.

[2] APPLICATION AND FEATURES

2-1 Applications

This instrument is a pocket-type digital multimeter with clamp sensor

designed for measurement of weak current circuits (CAT. II 600 V,

CAT. III 300 V). It plays an important role in circuitry analysis using

[7] AFTER-SALE SERVICE

7-1 Warranty and Provision

Sanwa offers comprehensive warranty services to its end-users and

to its product resellers. Under Sanwa’s general warranty policy, each

instrument is warranted to be free from defects in workmanship 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 to determine

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 other than 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 when

requesting 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 product

Please contact Sanwa authorized agent / distributor /

service provider, listed in our website, in your country with

above information. An instrument sent to Sanwa / agent /

distributor without those information will be returned to the

customer.

Note:

1) Prior to requesting repair, please check the following:

• Ca pa cit y a nd insta llat ion polarit y of the built -in

batteries.

• Continuity of the test leads.

[8] SPECIFICATIONS

8-1 General Specifications

MEASUREMENT CATEGORY

CAT II: Primary electrical circuits in equipment connected to

an AC electrical outlet by a power cord.

CAT III: P r im a ry e le c t r ic a l ci rcu it s o f he a vy e q u ip me n t

connected directly to the distribut ion panel, a nd

feeders from the distribution panel to outlets.

8-2 Measurement Range and Accuracy

Accuracy assurance range: 23 ± 5 °C & less than 80 % R.H.

No Condensation

Function Range Accuracy

Input impedance

Remarks

DCV

DC Voltage

660.0 mV

±(1.1 %rdg+3dgt)

≥100 MΩ

6.600 V

±(0.7 %rdg+3dgt)

Approx. 11 MΩ

66.00 V

±(0.8 %rdg+3dgt)

Approx. 10 MΩ

600.0 VΩ

±(1.1 %rdg+3dgt)

ACV

AC Voltage

660.0 mV

±(1.6 %rdg+10dgt)

≥100 MΩ

• Accuracy-

guaranteed

range: 40 ~

100 Hz

6.600 V

±(1.4 %rdg+6dgt)

Approx. 11 MΩ

• Accuracy-

guaranteed

range: 40 ~

400 Hz

• Accuracy in

the case of

sin wave

66.00 V

Approx. 10 MΩ

600.0 V

Resistance

660.0

±(1.5 %rdg+7dgt)

• Open voltage: Approx. 1.2 V

6.600 k

±(0.9 %rdg+3dgt)

• Open voltage: Approx. 0.78 V

• The measuring current

changes according to the

resistance of the resistor to

measure.

66.00 k

660.0 k

6.600 MΩ

±(2.0 %rdg+3dgt)

66.0 MΩ

±(4.0 %rdg+3dgt)

Testing

Diode • Open voltage: Almost battery voltage

Checking

Continuity

• Buzzer sounds at less than 30 Ω

• Open voltage: Approx. 1.2 V

Capacitance

6.600 nF

±(5.0 %rdg+10dgt)

• Accuracy was measured

after canceling display value

by the REL function.

66.00 nF

660.0 nF

6.600 μF

66.00 μF

660.0 μF

6.600 mF

±(7.0 %rdg+10dgt)

66.00 mF

Frequency

660.0 Hz

±(0.5 %rdg+3dgt)

• Measurement range: 20 Hz

~ 66 kHz

• Accuracy with input voltage

sensitivity of 10 ~ 600 Vrms

sin wave AC

6.600 kHz

66.00 kHz

• 50/60 Hz rectangular wave,

accuracy at 10 ~ 60 Vpp

DUTY 20.0 ~

80.0 %

±(0.5 %rdg+5dgt)

DCA

Direct

Current

100.0 A

±(2.0 %rdg+5dgt)

• Accuracy was measured

after canceling display value

by the ZERO set function.

ACA

Alternating

Current

100.0 A

±(2.0 %rdg+5dgt)

• Accuracy-guaranteed

range: 40 ~ 400 Hz

• Accuracy in the case of sin

wave

rdg: reading dgt: digits

Note: Correct measurement may not be possible in areas

exposed to st rong ma gnet ic fields generat ed by

electrical equipment such as a transformer or large

current path, electromagnetic waves generated by

wireless equipment, or area s where elect rostat ic

charges are generated.

Accuracy calculation

Ex.) Measurement of DC voltage (DCmV)

Display value: 100.0 mV

Range accuracy: 660 mV range … ± (1.1 %rdg±3dgt)

Error: ± (100.0 mV x 1.1 %±3dgt) = ±1.4

True value: 100.0 mV ± 1.4 mV (in a range of

98.6 ~ 101.4 mV)

Note: 3dgt in the 660 mV range corresponds to 0.3 mV.

Specifications and external appearance of the product

described above may be revised for modified without

prior notice.

2) Repair during the warranty period:

The failed meter will be repaired in accordance with the

conditions stipulated in “7-1 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 retent ion 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 e n s u r e t h e s a f e t y o f t h e p r o d u c t d u r i n g

transportation, place the product in a box that is larger

than the product 5 times or more in volume and fill

cushion materials fully and then clearly mark “Repair

Product Enclosed” on the box surface. The cost of

sending and returning the product shall be borne by

the customer.

7-3 SANWA Website

http://www.sanwa-meter.co.jp

E-mail: exp_sales@sanwa-meter.co.jp

5-3 Frequency/DUTY Measurements (Hz / %)

5-8 Clamp Current Measurement (CLAMP A)

6-4 Storage

5-4 Resistance Measurement ( )Ω

5-6 Testing Diodes ( )

5-7 Capacitance Measurement ( )

Note: AC voltage is regulated by rms, values of sinusoidal wave.

(Red)

(Black)

[3] NAME OF COMPONENT UNITS

3-1 Multimeter

Display

MAX/MIN

button

Winding

directions

of test leads

Hz/DUTY

button

REL/ZERO

button

DATA HOLD

button

RANGE

button

SELECT

button

Power

switch &

Function

switch

Auto range mode

Diode test

Data hold operation

measurement

Negative

polarity

REL

measurement

Auto power off

Low battery indication

Decimal points

Numerical indication Measurement

units

Continuity

check MAX/MIN

mode

ZERO set

When canceling an operation, do not turn the function

switch during measurement.

[4] DESCRIPTION OF FUNCTIONS

4-1 Power Switch & Function Switch (All Functions):

Turn this switch to turn the power ON and OFF and to select

the measurement function.

4-2 SELECT Button (V · / / · CLAMP A positions):Ω

As this button is pressed, the function switches in the order of

the arrows ( ) as shown below.

• V position: AC voltage ( ) DC voltage ( ) AC voltage

( )

• Ω Ω/ / position: Resistance measurement ( ) Continuity

check ( ) Diode test ( ) Resistance measurement (Ω)

• CLAMP A position: AC current ( ) DC current ( ) AC

current ( )

4-3 RANGE Button (DCV · ACV · · · Functions)Ω

Press this button to engage the manual mode and fix the

range (extinguished ).

When the manual mode is engaged, each press of this button

cha nges t he ra nge. Select a n a ppropria t e range while

confirming the unit and the position of the decimal point on

the display. To restore the auto range, keep this button

depressed for more than 1 second (lit ).

T h i s b u t t o n c a n n o t b e u s e d w h e n i n H z / D U T Y

measurement.

4-4 MAX/MIN Button

(DCV · ACV · · · · · DCA · ACA Functions):Ω

Press this button to enter the MAX/MIN mode. As this button

is pressed, the measurement range switches in the order of

the arrows ( ) as shown below.

• MAX value indication (lit ) MIN value indication (lit )

Current measurement value indication (blinking )

MAX value indication (lit )

• MAX value indication:

Displays the maximum value of the values measured since

the engagement of the MAX/MIN mode.

•

MIN value indication:

Displays the minimum value of the values measured since the

engagement of the MAX/MIN mode.

• Current measurement value indication:

Holds in memory the maximum and minimum values while

displaying the current measurement value. Press this button to

confirm the maximum and minimum values by switching

between the MAX and MIN value indications.

To d is enga ge t h e MAX / MIN mo d e, keep t h is b ut t on

depressed for more than 1 second.

When the function or range is switched, the MAX/MIN mode

will be canceled.

4-5 Hz/DUTY Button (ACV · ACA Functions):

P r e s s t h i s b u t t o n t o sw i t c h t h e m o d e t o H z / D U T Y

measurement. Each time this button is pressed when the ACV

or ACA function is selected, the mode switches in the order of

the arrows ( ) as shown below.

ACV or ACA measurement Hz measurement DUTY

measurement ACV or ACA measurement.

4-6 REL/ZERO Button

(DCV · ACV · · · · · DCA · ACA Functions):Ω

Press this button to enter the REL measurement mode when

the DCV, ACV, , , , , or ACA function is activated Ω

(lit ).

The measurement range will be fixed, and the displayed

value will be set to zero using the input value at the time of

pressing the button as the reference value. To cancel the REL

measurement, press this button again.

Pressing this button in the DCA mode sets the displayed

value to ZERO (lit ).

The value at the time the button is pressed will be canceled,

and the display will show 0.0 A.

To deactivate the ZERO set function, press the button again

and keep it depressed for more than 1 second.

Ex.) Display after the REL/ZERO button is pressed during

DC 3.000 V input

Wh e n t h e f u n c t i o n o r r a n g e i s s w i t c h e d , t h e R E L

measurement or ZERO set will be canceled.

Max. rating input value

66.0 MΩ

Measurement range

660.0 Ω, 6.600 k , 66.00 kΩ Ω,

660.0 k , 6.600 M , 66.0 MΩ Ω Ω

Function

1) Applications: Measuring the frequency and duty of any

circuit.

2) Measurement procedure

1 Set the function switch at the V position and press

the SELECT button to select ACV.

2 Press Hz/DUTY button to select the frequency (Hz)

measurement or DUTY ratio measurement.

3 Apply the red and black test pins to a conductor to

measure.

4 Read the value on the display.

5 After measurement, release the red and black test

pins from the object measured.

When the input terminal is not connected, the display

ma y f lu ct u a t e a nd b e u n st a b le . T h is i s n o t a

malfunction.

The frequency measurement range is 20 Hz ~ 66

kHz. The input sensitivity with sine wave alternating

current is 10 ~ 600 Vrms.

Measurement of an inverter power supply circuit may

cause a malfunction.

Measurement with DC-coupled input is not possible.

When the 6.600 nF or 66.00 nF range is used, use the

REL mode to set the values that rema in on t he

display to “0” (cancelled) before the measurement is

performed.

Readings are unstable because of stray capacitance

in test leads or noise.

④⑤ ⑤

③

②

①

④

⑥

①

③

⑥ ⑥

⑤

Diode

Cathode Anode

②

③

①

④ ④

Capacitor

②

①④

②

③

③④ ④

②

Resistor

①

and the clamp sensor barrier when making measurements.

Be sure to disconnect the test pins from the circuit when

changing the function.

10.

Before starting measurement, make sure that the function

a n d r a n g e a r e p r o p e r l y s e t in a c c o r d a n c e w i t h t h e

measurement.

11.

Never use meter with wet hands or in a damp environment.

12.

Ne v e r op e n t he ins t r ument ca se excep t when r epla cing

batteries. Do not attempt any alteration of original specifications.

13.

To ensure safety and maintain accuracy, calibrate and

check the instrument at least once a year.

14.

The instrument is for indoor use only.

Measurement range

660.0 mV, 6.600 V, 66.00 V, 600.0 V

Function

DCV

ACV

1. Never apply an input signal exceeding the maximum

rating input value.

2. Be sure to disconnect the test pins from the circuit when

changing the function.

3. Always keep your fingers behind the finger guards on

the probe when making measurements.

[5] MEASUREMENT PROCEDURE

5-1 Start-Up Inspection

START

damaged

Damaged

Main unit

and test leads

damaged?

Check continuity

of test leads.

Stop using it and

have it repaired.

①Set the function at

“ ”.

②Short the red and

black test pins.

The buzzer

sounds?

Yes

No problem. Start

measurement.

Check

①

②

Note:

If there is no display, the batteries may be exhausted.

5-2 Voltage Measurement

4-7 DATA HOLD Button (All Functions)

When this button is pressed, the will be lit in the display and

the value displayed at that time will be maintained. The

display will stay the same even if the measurement input

changes. Pressing this button again will cancel the DATA

HOLD mode and restore the measurement mode.

When the function or range is switched, the DATA HOLD

mode will be canceled.

4-8 Auto Power Off (APO):

The power and display will be turned off automatically when

no switch or button operation is made for about 30 minutes

after the power was turned on.

When a button is pressed or the function switch is turned

during measurement, the time until the Auto Power Off will be

extended an additional 30 minutes. To wake up from the Auto

Power Off mode, press the button again. When returned, the

value at the time of the Auto Power Off will be displayed using

the DATA HOLD mode. To disable this function, t urn the

funct ion swit ch while pressing a ny but ton (except t he

SELECT or DATA HOLD button) to turn on the power ( lit ).

When the Auto Power Off mode is engaged, the is lit in

the display.

Although power consumption in the Auto Power Off mode

the is less than 1/100 of that of the turned-on status, be sure

to set the power switch to OFF as soon as measurement is

complete.

4-9 Low Battery Indication

When the built-in batteries are exhausted and the battery

voltage drops below about 2.3 V, the will appear in the

display. If this icon is lit, replace the batteries with new ones

(two at the same time).

Actual input value

DC 6.000 V

DC 3.000 V

DC 1.000 V

③

①

④ ④

②

Battery

DCV

measurement

ACV

measurement

Outlet

Never apply voltage to the input terminals.

5-5 Checking Continuity ( )

1) Applications: Checking the continuity of wiring and

selecting wires.

2) How to use

1 Set the function switch to the / / position.Ω

2 Select “ ” by pressing the SELECT button.

3 Apply the red and black test pins t o a circuit or

conductor wire to measure.

4 The continuity can be judged by whether the buzzer

sounds or not.

5 After measurement, release the red and black test

pins from the object measured.

The buzzer sounds when the resistance of the circuit

to be measured is less than approx. 30 Ω.

The open circuit voltage between the input terminals

is approx. 0.78 V.

Measurement Double integral method

Display Max. 6600 count

Over ranging indication “OL” mark indication

Range selection Auto and manual ranges

Polarity selection Automatic selection (–

display only)

Low battery indication

Displayed when built-in

batteries are exhausted (to

2.3 V or less) with lit or

blinking in display

Sampling rate Approx. 3 times/sec

Current measurement system

CT clamp

Max. clamp conductor

diameter 10 mm

AC sensoring Average sensoring

Environmental condition

Operating altitude <2000 m,

indoor use, pollution degree 2

Accuracy-guaranteed

temperature/humidity range

23 ± 5 °C, <80 % RH (without

condensation)

Operating temperature/

humidity range

5 ~ 40 °C, <80 % RH (without

condensation)

Storage temperature/

humidity range

–10 ~ 50 °C, <80 % RH

(without condensation)

Power supply Two LR03 alkaline batteries

Auto power off Power off after approx. 30

minutes since last operation

Power consumption Approx. 7 mW TYP (at DCV)

Dimensions & mass

130 (

) x 75 (

) 19.9 (

) mm

(excluding protrusions),

approx. 160 g (including

batteries)

Test lead length Approx. 60 cm for both red

and black

Safety standard

EN61010-1, EN61010-2-030, EN61010-

2-033, EN61010-2-032 CAT. III 300 V,

CAT. II 600 V, EN61010-031

EMC directive, RoHS directive

IEC61326(EMC), EN50581(RoHS)

Accessories Instruction manual

3-2 Display

WARNING

CAUTION

WARNING

1. Discharge the capacitance before measurement.

2. This is not suitable for measurement of electrolytic

condenser such as a large leakage condenser.

3. It takes a while to measure large capacitance.

1. The measurable diameter of a conductor is 10 mm. Do

not force a cable with an outer diameter of more than 10

mm into the clamp sensor section. Also do not apply

external force to the clamp sensor section.

2. Make sure that the conductor to be measured is aligned

with the center of t he arrows on the clamp sensor.

Otherwise, a measurement error will result.

3. Do not let this instrument come near a conductor in

which la rge cu r rent f lo ws or pla ce it o n a st rong

magnet ic field. Such an environment ma y ca use a

c u r r e n t v a l u e t o b e d i s p l a y e d e v e n t h o u g h n o

measurement is made (an error may occur). Since the

clamp sensor of this instrument is a U-shaped open-type

sensor, it is more susceptible to such an environment

compared than a closed-type sensor.

1. The panel and the case are not resist ant t o volatile

solvent and must not be cleaned with thinner or alcohol.

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

pl a c es o r p la c e s u n d er d i r e ct s un li g h t o r w h e r e

condensation is anticipated.

5. When t he i n st rument is n ot g oing t o b e use d fo r

extended time, be sure to remove the batteries.

CAUTION

Measurement range

6.600 nF, 66.00 nF, 660.0 nF,

6.600 μF, 66.00 μF, 660.0 μF

6.600 mF, 66.00 mF

Max. input rating value

66.00 mF

Function

Max. input rating value

DC 100.0 A

AC 100.0 A

Measurement range

DC 100.0 A

AC 100.0 A

Function

DCA

ACA

• ACA: No adjustment is necessary.

3 Align one line of the conductor to be measured with

the center of the arrows on the clamp sensor.

• DCA: Point the object to be measured in the same

direction as the current direction marking. If it is

pointed in the opposite direction, “–” will be

displayed.

• ACA: The cur rent direct ion of t he o bject t o b e

measured is irrelevant.

4 Read the measurement value in the display.

5 After measurement, remove the conductor from the

clamp sensor.

1) Applications

DCA: Measures the current consumption of devices

such as an automotive battery.

ACA: Measures the sine wave alternating current with

40 ~ 400 Hz frequency of power supply facilities.

2) Measurement procedure

Raise the clamp sensor from the rear of the main unit.

2 Set the function switch to the CLAMP A position,

and press the SELECT button to select DCA or ACA.

• DCA: Use the ZERO set function to set the display

value to “0.0 A” before measurement.

[6] MAINTENANCE

6-1 Maintenance and Inspection

1) Appearance

• Has the appearance been damaged by falling?

2) Test leads

• Is the test lead cord damaged?

• Is the core wire exposed at any place on the test

leads?

If the built-in fuse is blown, current measurement is

impossible. Make sure that the test leads are not cut,

referring to the section 5-1.

6-2 Calibration

The manufacturer may conduct calibration and inspection.

For more information, please contact your dealer.

WARNING

1. To a void elect ric shock, do not remove t he battery

comp a r t ment c ove r wh e n in put is a p plie d t o t he

measurement t ermina l a nd clamp sensor or when

measurement is being performed.

2. Be sure to confirm that the function switch is set to “OFF”

before replacing the batteries.

WARNING

Set the batteries with their polarities facing in the correct

directions.

CAUTION

6-3 Battery Replacement

CAUTION

Clamp

sensor

(when stored)

Battery

compartment

cover

Battery

compartment

cover fixing

screws

Test probe (red)

Test probe (black)

Test pins

Removable

test pin covers

When not

covered

Finger guards

Removable test pin covers

When not covered : CAT.Ⅱ 600 V

When covered : CAT. Ⅲ 300 V

Test Leads

− 3 −− 1 − − 2 −

− 7 −− 6 −− 5 −

− 11 −− 10 −− 9 −

− 4 −

− 8 −

− 12 −

− 13 −

− 17 −

− 21 −

− 14 −

− 18 −

− 22 −

− 15 −

− 19 −

− 23 −

− 16 −

− 20 −

− 24 −

Produktspecifikationer

Varumärke:	Sanwa
Kategori:	Multimeter
Modell:	PM33a

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