YOKOGAWA 732 01, 732 02, 732 03, 732 04 User Manual

User’s

CAUTION

<1> Function switch

Input terminal

<5> Display

<4> AUTO.H key

<3> RANGE key

*(2) and (3) are not supported on the 732 04 multimeter.

<2> SELECT key (732 02/03)
or ( /= key (732 01)

VmAµAA COM

/

/

4/10

40/400

400/4000

uA

mA

A

V

V

OFF

AUTO.HRANGESELECT

DIGITAL
MULTIMETER

A • H
R • H

CAL

+ –

Lit when in DC-mode measurement
Lit when in AC-mode measurement
Polarity indicator lit when the polarity is negative
Lit when in diode test
Lit when in continuity check
AUTO HOLD indicator
Manual range indicator
Auto range indicator
AUTO POWER OFF indicator
Unit for capacitance measurement
Unit for voltage measurement
Unit for current measurement
Unit for resistance measurement
Lit when stray capacitance is adjusted to zero
Lit when the batteries are low

Symbol and Unit

AUTO

AUTO POWER OFF

nF, µF

mV , V
µA, mA, A
Ω, kΩ, ΜΩ

Description

Manual

Model 732 01/02/03/04
Digital Multimeters

Safety Precautions

Various symbols are used on the instrument and thoughout this manual to ensure safe use of the
product and to protect against possible hazards or damage.
The following safety symbols are used where app. opriate.
Read the explanations carefully and familiarize yourself with the symbols before reading the
text.

WARNING

This symbol indicates that misuse of the instrument could result in in­jury or death of personnel.

• Do not use the multimeter near noise-emitting equipment or where there may be a
sudden temperature change. Otherwise, the instrument may produce an unstable read­ing or errors.

• Do not wipe the instrument using any organic solvent such as benzine or paint thinner.
Otherwise, the front panel may be damaged or discolored. When cleaning the instru­ment, use a dry cloth.

• Do not leave the multimeter exposed to direct sunlight or in a hot and humid location
such as the inside of a car, for any prolonged length of time.

Measuring Instructions

CAUTION

To avoid damage to Instrument or equipment.

• Before starting measurement, check to which mode the function switch is set and make
sure the testing leads are plugged into the terminals for the desired mode of measure­ment.

•Temporarily remove the testing leads from the device under test before operating the
function switch.

Store this manual in a safe place for
future reference.

IM 73201E

1st Edition Feb. 1999
3rd Edition July. 2001

CAUTION

jury of personnel or damage to the instrument.

The instrument and this manual also use the following safety symbols:

Caution

This symbol indicates that the operator must refer to an explanation in the
instruction manual in order to avoid the risk of injury or death of personnel or
damage to the instrument.

Double Insulation

This symbol indicates double insulation.

Alternating current

This symbol indicates AC voltage/current.

Direct current

This symbol indicates DC voltage/current.

Fuse

This symbol indicates a fuse.

Earth TERMINAL

This symbol indicates ground.

WARNING

■ To avoid electric shock!

• Do not use deteriorated or damaged testing leads. Check testing leads before use.

• Do not use the instrument if there is any damage to the casing or when the casing is
removed.

• Disconnect the instrument from the circuit under test before opening the casing to re­place the batteries or for any other reason.

•Avoid using the instrument if it has been exposed to rain or moisture or if your hands
are wet.

■ To avoid electrical shock or fire!
Do not use the instrument in an atmosphere where any flammable or explosive gas is
present.

This symbol indicates that misuse of the instrument could result in in-

Components

1) Function Switch

Turns off the power or selects the measurement mode.
OFF: Turns off the power .

V: AC voltage measurement
V: DC voltage measurement

Ω/ : Resistance measurement and continuity check (732 02/03)
Ω : Resistance measurement (732 01/04)

: Continuity check (732 01/04)

: Diode test

: Capacitor check (732 02/03)
µA: DC/AC current measurement in micro-amperes
mA: DC/AC current measurement in milli-amperes (732 01/02/03)
A: DC/AC current measurement in amperes

2) SELECT key (732 02/03) or

This function is not supported on the 732 04 multimeter.

This key is enabled only if the multimeter is in one of the following measurement modes.

: In this mode, the button selects between the resistance measurement and continu-

• Ω/

ity test.

: In this mode, the button adjusts the stray capacitance of the testing leads and the

•

multimeter itself to zero.
(The display shows the

• µA/mA/A: In this mode, the button selects between the DC and AC modes.
* The 732 01 multimeter comes with the

only to select between the DC and AC modes in the current measurement mode.

3) RANGE key * This function is not supported on the 732 04 multimeter.

Allows the operator to select the measuring range manually (the display shows the
bol).
To return to the normal auto-ranging mode, hold down this button for at least one second until
the display shows “AUTO.”

4) AUTO-H key

Set up AUTO HOLD function. (the display shows the

/ key (732 01)*

CAL

symbol.)

/ key instead of the SELECT key. This key is used

symbol).

A • H

R • H

sym-

•AC Voltage Measurement (

V

/

V

V

OFF

a) Set the function switch from the OFF position to the

/

400/4000

uA

b) Plug the black testing lead into the COM input terminal and the red

40/400

mA

4/10

A

c) Connect the testing leads to the circuit under test and then read the

VmAµAA COM

V)

testing lead into the V•Ω•

multimeter when it stabilizes.

input terminal.

d) When measurement is complete, set the function switch back to the

Black testing lead

Red testing lead

• DC Voltage Measurement (

V

/

/

400/4000

V

uA

V

OFF

VmAµAA COM

Black testing lead

Red testing lead

OFF position and turn off the multimeter.

V)

a) Set the function switch from the OFF position to the

40/400

b) Plug the black testing lead into the COM input terminal and the red

mA

4/10

A

testing lead into the V•Ω•

input terminal.

c) Connect the testing leads to the circuit under test and then read the

multimeter when it stabilizes.

d) When measurement is complete, set the function switch back to the

OFF position and turn off the multimeter.

NOTE

Do not mistake the following for a malfunction!

If the 400 mV range is selected and the testing leads are left open-circuited, the multim­eter may give a certain reading. This does not affect your measurement.

• Resistance Measurement (Ω)

CAUTION

To avoid damage to instrument!

Turn off the power to the circuit under test before starting measurement in order to pre­vent any excessive voltage from being applied to the multimeter.

V position.

V position.

YOKOGAWA M&C CORPORATION
International Sales Dept.

2-9-32 Nakacho, Musashino-shi, Tokyo, 180-8750 Japan
Phone: [phone] Facsimile: 81-422-55-8954

YOKOGAWA CORPORATION OF AMERICA (U.S.A.)

Phone: [phone] Facsimile: 1-770-251-2088

YOKOGAWA EUROPE B. V. (THE NETHERLANDS)

Phone: [phone] Facsimile: 31-334-64-1610

YOKOGAWA AMERICA DO SUL S. A. (BRAZIL)

Phone: [phone] Facsimile: 55-11-5681-1274

YOKOGAWA ENGINEERING ASIA PTE. LTD. (SINGAPORE)

Phone: [phone] Facsimile: 65-6241-2606

YOKOGAWA MEASURING INSTRUMENTS KOREA CORPORATION (KOREA)

Phone: [phone] to -0664 Facsimile: 82-2-551-0665

YOKOGAWA AUSTRALIA PTY. LTD. (AUSTRALIA)

Phone: [phone] Facsimile: 61-2-9888-1844

YOKOGAWA BLUE STAR LTD. (INDIA)

Phone: [phone] Facsimile: 91-80-227-4270

LTD. YOKOGAWA ELECTRIC (RUSSIAN FEDERATION)

Phone: [phone] Facsimile: 7-095-737-7869

KIM3E-2002.7

WARNING

■ To avoid damage to instrument or electric shock!

The restrictions on the maximum voltage level for which the 732 01, 02, 03 and 04
multimeters can be used, depend on the over-voltage categories specified by the safety
standards. These category specifications are formulated to protect operators against
transient impulse voltages in power lines.

Over-voltage Category (CAT.) Maximum Input Voltage

II 600 V

III 300 V

Over-voltage category I (CAT. I):

Covers the path from a mains outlet, through a power transformer, to a circuit in the
transformer's secondary stage.

Over-voltage category II (CAT. II):

Covers a primary-stage circuit of equipment connected to a mains outlet.

Over-voltage category III (CAT. III):

Covers the path from an indoor distribution switchboard to a mains outlet.

5) Display View with All Elements Turned On

a) Place the function switch in the Ω position (732 01/04) or Ω/

/

/

400/4000

V

uA

40/400

V

OFF

VmAµAA COM

position (732 02/03).

mA

4/10

A

b) Plug the black testing lead into the COM input terminal and the red

testing lead into the V•Ω•

input terminal.

c) Connect the testing leads to the circuit under test and then read the

multimeter when it stabilizes.

Black testing lead

Red testing lead

• Continuity Check (

d) When measurement is complete, place the function switch in the

OFF position and turn off the multimeter.

)

CAUTION

To avoid damage to instrument!

Turn off the power to the circuit under test before starting measurement in order to pre­vent any excessive voltage from being applied to the multimeter.

V

uA

40/400

V

OFF

VmAµAA COM

position.

mA

4/10

A

If the model is 732 02 or 03, place the function switch in the Ω/
position, and then press the SELECT key. (The symbol appears
on the display.)

a) If the model is 732 01 or 04, place the function switch in the

/

/

400/4000

b) Plug the black testing lead into the COM input terminal and the red

Black testing lead

Red testing lead

testing lead into the V•Ω•

c) Connect the testing leads to the circuit under check. If the circuit is

input terminal.

continuous (no more than approximately 50 Ω), the buzzer sounds.

d) When the test is complete, place the function switch in the OFF

position and turn off the multimeter.

Input

Resistance

Maximum

Input Voltage

Range

400 mV

4V

40 V
400 V
600 V

0.1 mV

0.001 V

0.01 V

0.1 V
1V

0.5%+1 600 V>100MΩ#
11MΩ#
10MΩ

0.5%+1 0.3%+1

0.75%+1

Accuracy

732 01

Resolution

732 02/04

732 03

Input

Resistance

Range

4 V

40 V
400 V
600 V

0.001 V

0.01 V

0.1 V
1 V

1%+5 0.75%+5

11 MΩ, <50 pF 600 V
10 MΩ, <50 pF

Accuracy (40-500 Hz)

Resolution

Maximum

Input Voltage

732 01 732 02

732 03/04

Voltage

Drop

Range

400 µA*1

4000 µA

40 mA*2

400 mA

10 A*3

µA

mA

A

0.1µA
1µA

0.01mA

0.1mA

0.01A

2% + 20

2% + 5

2% + 20

2% + 5

2.5% + 20

400 mA

The input is

protected by a

500 mA/250 V

fuse

10 A

The input is

protected by a

15 A/250 V fuse

<0.17 mV/µA

<3 mV/mA

<0.04 V/A

Accuracy (40-500 Hz)

Resolution

Maximum

Input Current

732 01 732 02 732 03

Measuring

Current

Open-loop

Voltage

Input Protective

Voltage

Range

400 Ω

4K Ω

40K Ω

400K Ω

4M Ω

40M Ω

<1.0 mA
<0.5 mA

<70 µA

<7 µA

<0.7 µA

<70 nA

<3.4 V
<1.0 V
<0.7 V

600 V0.1 Ω

0.001 kΩ

0.01 kΩ

0.1 kΩ

0.001 MΩ

0.01 MΩ

0.75%+2

0.75%+1

2%+1
5%+2

Resolution Accuracy

732 01/02/03/04

Range Resolution

20 nF

200 nF

2 µF

20 µF

200 µF

0.01 nF

0.1 nF

0.001 µF

0.01 µF

0.1 µF

This function
is not
available.

By means of
a 500 mA/250 V fuse

2% + 5 typical
Readings in the 20nF range are
values after zero calibration
has been completed.

Protection FuseAccuracy

732 03732 02732 01/04

)

• Diode Test ( )

a) Set the function switch from the OFF position to the

/

/

400/4000

V

uA

40/400

b) Plug the black testing lead into the COM input terminal and the red

mA

V

4/10

A

OFF

Black testing lead

Red testing lead

testing lead into the V•Ω•

c) Connect the testing leads to the diode and then read the multimeter

VmAµAACOM

when it stabilizes.
(1) Forward-bias Diode Test

Connect the black testing lead to the cathode and the red testing
lead to the anode (see Figure 1).

input terminal.

Silicon diodes should give a reading of approximately 0.5 V and
light-emitting diodes a reading between 1.5 V and 2.0 V. Note
that readings close to 0 V represent a short-circuit and the "---"
symbol indicates an open-circuit.

Black testing
lead

Red testing
lead

(2) Reverse-bias Diode T est

Connect the black testing lead to the anode and the red testing
lead to the cathode (see Figure 2).
Normally, the display shows the "---" symbol, indicating that the
diode under test is normal. The diode is defective if the display
gives a certain voltage level.

d) When the test is complete, set the function switch back to the OFF

Figure 1 Forward-bias

Diode Test

Red testing
lead

Figure 2 Reverse-bias

Black testing
lead

Diode Test

• Capacitor Check (

position and turn off the multimeter.

)

*This function is not supported on the 732 01/04 multimeters.

CAUTION

To avoid damage to Instrument or equipment.

Before starting measurement, be sure to discharge the capacitor under check.

a) Set the function switch from the OFF position to the
b) Plug the black testing lead into the COM input terminal and the red

/

/

400/4000

V

uA

V

OFF

Red testing lead

Black testing lead

40/400

testing lead into the µA•mA•

mA

4/10

A

c) Press the SELECT key to adjust the stray capacitance to zero (the

display shows the

VmAµAACOM

d) Connect the testing leads to the circuit under check and then read

the multimeter when it stabilizes.

e) When measurement is complete, set the function switch back to the

OFF position and turn off the multimeter.

CAL

input terminal.

symbol).

NOTE

Do not mistake the following for a malfunction!

Zero calibration is only effective when the 20nF range is selected.

• Current Measurement (µA/mA/A)
*This fucntion is not supported on the 732 04 multimeter.

CAUTION

To avoid damage to instrument!

• Check to which mode the function dial is set before starting measurement.

•A current of 11 to 20 A can also be measured if the time interval is kept within 30

seconds. The buzzer will sound if the interval exceeds 30 seconds. If this happens,
immediately stop measurement. T o continue measurement, wait for 2 minutes or more
when restart.

a) Set the function switch from the OFF position to either the µA, mA or A position. (If the

magnitude of the current being measured is not known, select the A position.)

b) When measuring AC current, press the SELECT key to select the AC mode. (The display

shows the “

” symbol to indicate AC-mode measurement.)

c) Plug the black testing lead into the COM input terminal and the red testing lead into the A

input terminal. If the current is in the order of milli-amperes or less, plug the red testing lead
into the µA•mA•
Connect the testing leads to the circuit under test and then read the multimeter when it stabilizes.

d)

input terminal.

e) When measurement is complete, set the function switch back to the OFF position and turn

off the multimeter.

mA

OFF

Red testing lead

Black testing lead

mA

/

/

400/4000

V

uA

40/400

mA

V

4/10

A

VmAµAACOM

A

OFF

Red testing lead

Black testing lead

/

/

400/4000

V

uA

40/400

mA

V

4/10

A

VmAµAA COM

A

position.

position.

AUTO HOLD Function

The 732 series of multimeters can automatically retain the measured value when the testing
leads are handled as described below.
a) Press the AUTO.H key . (The display shows the

A • H

symbol.)
b) Connect the testing leads to the object under test.
c) When the reading stabilizes, the buzzer sounds.
d) Remove the testing leads from the object under test.
e) The multimeter now shows the measured value that it retains.
f) You can repeat steps b) to e) as many times as you like as long as the display shows the

A • H

symbol.

NOTE

Do not mistake the following for a malfunction!

• In DC voltage measurement, the AUTO HOLD function is only available for ranges
greater than the 4 V range.

• This function is not available for current-mode measurement.

• In a capacitor check, the AUTO HOLD function requires a few seconds before it takes
effect.

• The AUTO HOLD function cannot be applied to unstable signals.

g) To cancel this function, press the

key once again.

A • H

AUTO POWER OFF Function

The multimeter automatically turns off if no key is pressed for a period of 20 minutes. The
multimeter will beep for approximately one minute to alert the operator before the automatic
power-off function takes effect. (Pressing any key while the multimeter is beeping postpones
the power-off time. Pressing any key once after the power to the multimeter is automatically
turned off switches the multimeter on again.)
To cancel the automatic power-off function, hold down the SELECT key and then set the func­tion switch from the OFF to the position of any desired measurement mode. (The AUTO POWER
OFF indication turns off when the function is canceled.)
To enable the function once again, temporarily switch the function switch back to the OFF
position, and then select the desired measurement mode.

Battery Replacement

If the batteries fall below the normal operating voltage, the symbol turns on. If this

happens, replace the batteries with new ones (AAA-size [ANSI] batteries....2).

CAUTION

To avoid electric shock!

• Be sure to disconnect the multimeter from the circuit under test before replacing the
batteries.

• Replace both batteries at the same time making sure to position them with the correct
polarities.

To replace the batteries:

a) Remove the three screws on the back of the casing.
b) Open the casing.
c) Take the battery holder out of the casing.
d) Replace the batteries with new ones and install the battery

holder back into the casing.

e) Close the casing and fasten it with the three screws.

a

Fuse Replacement

If a current greater than the rated value flows when the multimeter is in the current-measure­ment range, a protection fuse may blow. If this happens, replace that fuse. The multimeter
contains the following two types of fuses:

• Type F05 250 V/500 mA fuse

• Type F02 250 V/15 A fuse

CAUTION

To avoid electric shock!

• Be sure to disconnect the multimeter from the circuit under test before replacing the
fuse(s).

• Do not operate the multimeter with the casing left open.

• In order to avoid damage to the multimeter or any possible accident, use fuses of the
specified rating.

To replace the fuse(s):

a) Remove the three screws on the back of the casing.
b) Open the casing.
c) Remove the blown fuse from the fuse holder.
d) Install a new fuse in the holder.
e) Close the casing and fasten it with the three screws.

F02:15 A/250 V
protection fuse

F05:500 mA/250 V
protection fuse

View with the Casing Open

Specifications

1. General Specifications

• Measurement functions: AC voltage, DC voltage, AC current (732 01/02/03), DC current(732

• Additional functions: Auto hold, manual range selection, over-range alarm, and Auto power

• Display: LCD display that is capable of indicating a significant reading of up

• Range selection: Manual or automatic

• Sampling: 2 times/sec

• Operating temperature and humidity ranges:

• Storage temperature and humidity ranges:

01/02/03), resistance, continuity, diode and capacitance (732 02/03)

off.

to 4300 counts along with the indications of the unit and function. It
shows the negative polarity only; no indication is given for positive
polarity. The display also has the OL or over-range and

low­battery alarm indicators.
Note: The most significant reading is 210 counts for the diode test
and 2300 counts for the capacitor check.

0 to 50°C (Accuracy guaranteed range: 23±5°C)
Where the range is 0 to 40°C for humidity of 80%RH or less and 40
to 50°C for humidity of 70%RH or less

• DC Current Measurement ( A)
* This function is not supported on the 732 04 multimeter.

40 mA*2

10 A*3

Resolution

0.1 µA
1 µA

0.01 mA

0.1 mA

0.01 A

Accuracy

732 01 732 02 732 03

1% + 2

2% + 2

Voltage

Drop

<0.17 mV/µA

<3 mV/mA

<0.04 V/A

Maximum

Input Current

400 mA

The input is

protected by a

500 mA/250 V

fuse

10 A

The input is

protected by a

15 A/250 V fuse

µA

mA

A

Range

400 µA*1

4000 µA

400 mA

*1, *2 These ranges may produce a readout error equivalent to several times their resolution.
*3 A current of 11 to 20 A can also be measured if the time interval is kept within 30

seconds. The buzzer will sound if the interval exceeds 30 seconds.

Response: 1 sec maximum

•AC Current Measurement (

A)

* This function is not supported on the 732 04 multimeter.

(Mean-value detection and rms-value calibration)

-20°C to 60°C; 70% RH maximum

• Battery life: Approximately 600 hours (when continuously operated on alkaline
batteries)

• Power supply: AAA-size batteries (ANSI) .......................................................... 2

• External dimensions: 74 (W) × 155 (H) × 31 (D) mm (excluding protrusions)

• Weight: Approx. 240 g (including batteries)

• Safety standards: EN61010-1:1993 + A2 ; 1995, EN61010-2-031:1994
(AC/DC 300V CAT.III, AC/DC 600 V CAT. II, Pollution degree2)

• EMC standards: EN55011:1998 Group 1 Class B
EN61326-1 ; 1997 + A1 ; 1998

• Effect of EMS immunity:
Accuracy range of reading: [Rated accuracy + 5.0% of each range]
for the strength of a radio-frequency electromagnetic field of 3 V/m

• Operable altitude: 2000m or less above sea level.

• Accessories: Batteries (housed in the instrument) ............................................. 2

Testing leads ............................................................................ 1set

*1, *2 These ranges may produce a readout error equivalent to several times their resolution.
*3 A current of 11 to 20 A can also be measured if the time interval is kept within 30

seconds. The buzzer will sound if the interval exceeds 30 seconds.

Response: 2 sec maximum

• Resistance Measurement (Ω)

Spare fuse: F05 (500 mA/250 V) ................................................. 1

F02 (15 A/250 V) ...................................................... 1

Instruction manual ........................................................................ 1

2. Electrical Specification

Test conditions: 23 ±5°C at 80% RH maximum
Accuracy: ±(percentage of reading + number of LSD reading)
Note: Each response noted below is a value measured in the Range Hold mode (manual range

setting).

• DC Voltage Measurement (

b)

c)

V)

Response: 1.5 sec maximum for 400 mV range or 1 sec maximum for other ranges

•AC Voltage Measurement (

V)

(Mean-value detection and rms-value calibration)

Response: 1 sec maximum for ranges lower than the 400 kΩ range, 5 sec maximum for the 4

MΩ range, and 15 sec maximum for the 40 MΩ range

• Continuity check (

Range

400 Ω 0.1 Ω

Resolution

)

Range of operation

732 01/02/03/04

resistances lower than 50 ±20 Ω.

Open-circuit

Voltage

<3.4 VThe buzzer turns on for

Input Protective

Voltage

600 V

Response: 0.2 sec maximum (for a buzzer response)

• Diode Test (

Range

2 V 0.01 V

)

Resolution

Accuracy

732 01/02/03/04

1% + 1 (for measuring currents
smaller than 1.0 mA)

Open-circuit

Voltage

<3.4 V

Input Protective

Voltage

600 V

Response: 1 sec maximum

• Capacitor check (

)

Response: 2 sec maximum

Response: 1 sec maximum