YOKOGAWA 73201 User Manual

User's
73201, 73202, 73203, and
Manual
73204
Digital Multimeters
Thank you for purchasing our Digital Multimeter.
Before using this Digital Multimeter, thoroughly read
this manual to understand how to use it properly.
Contact information of Yokogawa offices worldwide is
provided on the following sheet.
PIM 113-01Z2: Inquiries List of worldwide contacts
Store this manual in an easily accessible
place for quick reference.
Printed in Taiwan
IM 73201E
10th Edition Oct. 2017 (YMI)

Safety Precautions

This product is designed to be used by a person with specialized
knowledge.
When operating the instrument, be sure to observe the cautionary notes
given below to ensure correct and safe use of the instrument. If you use
the instrument in any way other than as instructed in this manual,
the instrument's protective measures may be impaired.
This manual is an essential part of the product; keep it a safe place for
future reference.
YOKOGAWA is by no means liable for any damage resulting from use of
the instrument in contradiction to these cautionary notes.
The following safety symbols are used on the instrument and
in this manual.
Handle with Care.
Refer to the user's manual.
This symbol appears on dangerous locations on the instrument
which require special instruction for proper handling or use.
WARNING
Indicates a hazard that may result in the loss of life or serious injury of
the user unless the described instruction is abided by.
CAUTION
Indicates a hazard that may result in an injury to the user and/or physical
damage to the product or other equipment unless the described
instruction is abided by.
This symbol indicates double insulation.
This symbol indicates AC voltage/current.
This symbol indicates DC voltage/current.
This symbol indicates a fuse.
This symbol indicates ground (earth).
WARNING
Failure to comply with the precautions below could lead to
injury or death or damage to the instrument.
• The instrument is for measuring voltage, current, or resistance etc.
Do not use this instrument for other purpose.
• Do not use the instrument if there is a problem with its physical appearance.
• Do not open the case except when replacing batteries or fuse.
Only qualified YOKOGAWA personnel may remove the case and disassemble or
alter the instrument.
Do not attempt to repair/modify the instrument yourself, as doing so is extremely
dangerous.
• Do not use the instrument in an atmosphere where any flammable or explosive
gas is present.
• Use the testing leads supplied by YOKOGAWA with this instrument.
• Check the testing leads before use and do not use deteriorated or damaged ones.
Check the continuity of the testing leads.
• 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.
WARNING
To avoid a short-circuit or an accident to personnel, use this
instrument within maximum input voltage and current.
Category of Main Unit (Model 732)
EN 61010-1: 2001
Maximum Input Voltage
Measurement Category
CAT II 600 V
CAT III 300 V
Measurement
Description Remarks
category
For measurements performed on circuits not directly
Circuits not connected
connected to MAINS.
CAT I
to a mains power source
CAT I : EN 61010-1: 2001
For measurements performed on circuits directly Appliances, portable
CAT II
connected to the low-voltage installation. equipment, etc.
For measurements performed in the building Distribution board,
CAT III
installation. circuit breaker, etc.
For measurements performed at the source of the Overhead wire, cable
CAT IV
low-voltage installation. systems, etc.
Category of Testing leads
When you use the test leads, attach or remove the caps according to
the measurement category.
With caps: 1000V 10A CAT III / 600V 10A CAT IV
Without caps: 1000V 10A CAT II
CAUTION
• The instrument is for domestic use (Class B) and meets the electromagnetic
compatibility requirements.
• 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 solvent (chemicals) 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.

Components

1) Function Switch

Turns off the power or selects the measurement mode.
OFF Turns off the power
Ac Voltage Measurement
Dc Voltage Measurement
Resistance Measurement and continuity check (73202/03)
Resistance measurement (73201/04)

Continuity check (73201/04)

Diode Test
Capacitor Check (73202/03)
µA DC/AC current measurement in micro-amperes
(73201/02/03)
mA DC/AC current measurement milli-amperes
A
DC/AC current measurement in amperes
2) SELECT key (73202/03) or key (73201)*
This function is not supported on the 73204 multimeter.
This key is enabled only if the multimeter is in one of the following
measurement modes.
In this mode, the key selects between the resistance
measurement and continuity test.
In this mode, the key adjusts the stray capacitance of
the testing leads and the multimeter itself to zero.
(The display shows the symbol.)
CAL
µA/mA/A
In this mode, the key selects between the DC and AC modes.
* The 73201 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 73204 multimeter.
Allows the operator to select the measuring range manually.
(The display shows the R • H symbol.)
To return to the normal auto-ranging mode, hold down this key for at
least one second until the display shows AUTO.

4) AUTO. H key

Set up AUTO HOLD function. (The display shows the symbol.)
A • H
<5> Display
<2> SELECT key (73202/03)
or ( / = key (73201)
<3> RANGE key
*(2) and (3) are not supported on the
73204 multimeter.
<4> AUTO.H key
<1> Function switch
Input terminal

5) Display View with All Elements Turned On

Symbol and Unit Description
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 Auto range indicator
AUTO POWER OFF AUTO PWER OFF indicator
nF, µF Unit for capacitance measurement
mV, V Unit for voltage measurement
µA, mA, A Unit for current measurement
Ω, kΩ, MΩ Unit for resistance measurement
CAL Lit when stray capacitance is adjusted to zero
Lit when the batteries are low

Measuring Instructions

CAUTION
To avoid damage to Instrument or equipment.
• To verify the instrument's functionality, check that the measured value is
update after turning on the power.
If the measured value is not update, the reading will be incorrect and may
lead to possible electrical shock or personal injury.
• 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.
AC Voltage Measurement
V
V
a) Set the function switch from the OFF position to the
/
position.
V
4/10
b) Plug the black testing lead into the COM input
terminal and the red testing lead into the
input terminal.
c) Connect the testing leads to the circuit under test
Black
testing lead and then read the multimeter when it stabilizes.
d) When measurement is complete, set the function
Red testing lead
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
/
V position.
4/10
b) Plug the black testing lead into the COM input terminal
and the red testing lead into the input
terminal.
c) Connect the testing leads to the circuit under test
Black
and then read the multimeter when it stabilizes.
testing lead
d) When measurement is complete, set the function
Red testing lead
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.
a) Place the function switch in the Ω position (73201/04)
/
or position (73202/03).
4/10
b) Plug the black testing lead into the COM input terminal
and the red testing lead into the
terminal.
c) Connect the testing leads to the circuit under test and
Black
testing lead
then read the multimeter when it stabilizes.
Red testing lead
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 prevent any excessive voltage from being applied to the multimeter.
a) If the model is 73201 or 04, place the function switch
/
in the position.
4/10
If the model is 73202 or 03, place the function switch
in the position, and then press the SELECT key.
(The symbol appears on the display.)
b) Plug the black testing lead into the COM input terminal
Black
and the red testing lead into the
testing lead
terminal.
Red testing lead
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.
input
input