YOKOGAWA 732 01 User manual

User’s
Manual Model 732 01/02/03/04
Digital Multimeters
IM 73201E
1st Edition Feb.1999
3rd Edition July. 2001
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 in-
jury or death of personnel.
CAUTION
This symbol indicates that misuse of the instrument could result in in-
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 indicatesAC 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 re-
place 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.
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.
VmAµAA COM
/
/
4/10
40/400
400/4000
uA
mA
A
V
V
OFF
V
Black testing lead
Red testing lead
Store this manual in a safe place for
future reference.
CAUTION
•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 read-
ing 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 instru-
ment, 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.
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 /key (732 01)*
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.
• Ω/: In this mode, the button selects between the resistance measurement and continu-
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
CAL
symbol.)
• µA/mA/A: In this mode, the button selects between the DC and AC modes.
* The 732 01 multimeter comes with the / key instead of the SELECT key. This key is used
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
R • H
sym-
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
A • H
symbol).
<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
5) DisplayView with All ElementsTurned On
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
VmAµAA COM
/
/
4/10
40/400
400/4000
uA
mA
A
V
V
OFF
V
Black testing lead
Red testing lead
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 measure-
ment.
•Temporarily remove the testing leads from the device under test before operating the
function switch.
•AC Voltage Measurement ( V)
a) Set the function switch from the OFF position to the V position.
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.
d) When measurement is complete, set the function switch back to the
OFF position and turn off the multimeter.
•DC Voltage Measurement ( V)
a) Set the function switch from the OFF position to the V position.
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.
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 multim-
eter 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 pre-
vent any excessive voltage from being applied to the multimeter.
a) Place the function switch in the Ωposition (732 01/04) or Ω/
position (732 02/03).
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.
d) When measurement is complete, place the function switch in the
OFF position and turn off the multimeter.
•Continuity Check ( )
CAUTION
To avoid damage to instrument!
Turn off the power to the circuit under test before starting measurement in order to pre-
vent any excessive voltage from being applied to the multimeter.
a) If the model is 732 01 or 04, place the function switch in the
position.
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.)
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 check. If the circuit is
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.
VmAµAA COM
/
/
4/10
40/400
400/4000
uA
mA
A
V
V
OFF
Black testing lead
Red testing lead
VmAµAA COM
/
/
4/10
40/400
400/4000
uA
mA
A
V
V
OFF
Black testing lead
Red testing lead
KIM3E-2002.7
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

Specifications
1. General Specifications
• Measurement functions: AC voltage, DC voltage,AC current (732 01/02/03), DC current(732
01/02/03), resistance, continuity, diode and capacitance (732 02/03)
• Additional functions: Autohold, manual range selection, over-rangealarm,andAutopower
off.
• Display: LCD display that is capable of indicating a significant reading of up
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 low-
battery alarm indicators.
Note: The most significant reading is 210 counts for the diode test
and 2300 counts for the capacitor check.
• Range selection: Manual or automatic
• Sampling: 2 times/sec
• Operating temperature and humidity ranges:
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
• Storage temperature and humidity ranges:
-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
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).
• DCVoltage Measurement ( V)
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
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)
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
Response: 2 sec maximum
VmAµAACOM
/
/
4/10
40/400
400/4000
uA
mA
A
V
V
OFF
Red testing lead
Black testing lead
•DC Current Measurement ( A)
*This function is not supported on the 732 04 multimeter.
Voltage
Drop
Range
400 µA*1
4000 µA
40 mA*2
400 mA
10 A*3
µA
mA
A
0.1 µA
1µA
0.01 mA
0.1 mA
0.01 A
1% + 2
2% + 2
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
Resolution Maximum
Input Current
732 01 732 02 732 03
*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)
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
*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)
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
Response: 1 sec maximum for ranges lower than the 400 kΩrange, 5 sec maximum for the 4
MΩrange, and 15 sec maximum for the 40 MΩrange
• Continuity check ( )
Input Protective
Voltage
Range
400 Ω0.1 Ω600 V
Open-circuit
Voltage
<3.4 VThe buzzer turns on for
resistances lower than 50 ±20 Ω.
Range of operation
732 01/02/03/04
Resolution
Response: 0.2 sec maximum (for a buzzer response)
• DiodeTest ( )
Input Protective
Voltage
Range
2 V 0.01 V 600 V
Open-circuit
Voltage
<3.4 V
1% + 1 (for measuring currents
smaller than 1.0 mA)
Accuracy
732 01/02/03/04
Resolution
Response: 1 sec maximum
• Capacitor check ( )
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
Response: 1 sec maximum
VmAµAACOM
/
/
4/10
40/400
400/4000
uA
mA
A
V
V
OFF
Black testing lead
Red testing lead
Black testing
lead Red testing lead
Red testing
lead Black testing lead
Figure 1 Forward-bias
Diode Test
Figure 2 Reverse-bias
Diode Test
View with the Casing Open
F02:15 A/250 V
protection fuse
F05:500 mA/250 V
protection fuse
b)
c)
a
)
•DiodeTest ( )
a) Set the function switch from the OFF position to the position.
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 diode and then read the multimeter
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).
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.
(2) Reverse-bias Diode Test
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
position and turn off the multimeter.
•Capacitor Check ( )
*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 position.
b) Plug the black testing lead into the COM input terminal and the red
testing lead into the µA•mA• input terminal.
c) Press the SELECT key to adjust the stray capacitance to zero (the
display shows the
CAL
symbol).
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.
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.
•Acurrent 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. To 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 theA position.)
b) When measuring AC current, press the SELECT key to select the AC mode. (The display
shows the “ ” symbol to indicateAC-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• input terminal.
d)
Connect the testing leads to the circuit under test 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.
VmAµAACOM
/
/
4/10
40/400
400/4000
uA
mA
A
V
V
OFF
mA
mA
Red testing lead
Black testing lead
VmAµAA COM
/
/
4/10
40/400
400/4000
uA
mA
A
V
V
OFF
A
A
Red testing lead
Black testing lead
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, theAUTO 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
A • H
key once again.
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 func-
tionswitch from the OFF to the position of any desired measurement mode. (TheAUTO 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.
Fuse Replacement
If a current greater than the rated value flows when the multimeter is in the current-measure-
ment 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.