Thank you for purchasing the HIOKI "3803
DIGITAL HiTESTER". To obtain maximum
performance from the product, please read this
manual first, and keep it handy for future reference.
Inspection
When you receive the product, inspect it carefully to
ensure that no damage occurred during shipping. If
damage is evident, or if it fails to operate according
to the specifications, contact your dealer or Hioki
representative.
Accessories
3851-10 TEST LEAD (a pair) 1
Protective holster 1
Instruction Manual 1
6F22 manganese battery 1
(built into this unit, for monitor)
i
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Introduction
Page 50
ii
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Safety Notes
WARNING
This product is designed to conform to IEC 61010
Safety Standards, and has been thoroughly tested
for safety prior to shipment. However,
mishandling during use could result in injury or
death, as well as damage to the product. Be
certain that you understand the instructions and
precautions in the manual before use. We
disclaim any responsibility for accidents or
injuries not resulting directly from product
defects.
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Safety Notes
Page 51
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iii
This manual contains information and warnings
essential for safe operation of the product and for
maintaining it in safe operating condition. Before
using the product, be sure to carefully read the
following safety notes.
Safety symbols
Thesymbol printed on the product
indicates that the user should refer to
a corresponding topic in the manual
(marked with the
symbol) before
using the relevant function.
In the manual, thesymbol indicates
particularly important information that
the user should read before using the
product.
Indicates a double-insulated device.
Indicates DC (Direct Current).
Indicates AC (Alternating Current).
Indicates both DC and AC .
Indicates a grounding terminal.
Indicates that dangerous voltage may be
present at this terminal.
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Safety Notes
Page 52
iv
―――――――――――――――――――――――――――
The following symbols in this manual indicate the
relative importance of cautions and warnings.
Indicates that incorrect operation
DANGER
presents an extreme hazard that could
result in serious injury or death to the
user.
Indicates that incorrect operation
WAR NING
presents a significant hazard that could
result in serious injury or death to the
user.
Indicates that incorrect operation
CAUTION
presents a possibility of injury to the
user or damage to the product.
Advisory items related to performance
NOTE
or correct operation of the product.
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Safety Notes
Page 53
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We define measurement tolerances in terms of f.s.
(full scale), rdg. (reading) and dgt. (digit) values,
with the following meanings:
■ f.s. (maximum display value or scale length)
The maximum displayable value or the full length of
the scale. This is usually the maximum value of the
currently selected range.
■ rdg. (reading or displayed value)
The value currently being measured and indicated
on the measuring product.
■ dgt. (resolution)
The smallest displayable unit on a digital measuring
product, i.e., the input value that causes the digital
display to show a "1".
v
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Safety Notes
Page 54
vi
―――――――――――――――――――――――――――
Measurement categories (Overvoltage
categories)
This product conforms to the safety requirements for
CAT II (1000V), CATIII (600V) measurement
products.
To ensure safe operation of measurement product,
IEC 61010 establishes safety standards for various
electrical environments, categorized as CAT I to
CAT IV, and called measurement categories. These
are defined as follows.
CAT I : Secondary electrical circuits connected to
an AC electrical outlet through a
transformer or similar device.
CAT II : Primary electrical circuits in equipment
connected to an AC electrical outlet by a
power cord (portable tools, household
appliances, etc.)
CAT III : Primary electrical circuits of heavy
equipment (fixed installations) connected
directly to the distribution panel, and
feeders from the distribution panel to
outlets.
CAT IV : The circuit from the service drop to the
service entrance, and to the power meter
and primary overcurrent protection device
(distribution panel).
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Safety Notes
Page 55
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vii
Higher-numbered categories correspond to electrical
environments with greater momentary energy. So a
measurement device designed for CAT III
environments can endure greater momentary energy
thanadevicedesignedforCATII.
Using a measurement product in an environment
designated with a higher-numbered category than
that for which the product is rated could result in a
severe accident, and must be carefully avoided.
Never use a CAT I measuring product in CAT II,
III, or IV environments.
The measurement categories comply with the
Overvoltage Categories of the IEC60664 Standards.
――――――――――――――――――――――――
Safety Notes
Page 56
viii
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Notes on Use
Follow these precautions to ensure safe operation
and to obtain the full benefits of the various
functions.
Preliminary Check
Before using the product the first time, verify that it
operates normally to ensure that the no damage
occurred during storage or shipping. If you find any
damage, contact your dealer or Hioki representative.
WARNING
Do not use the product where it may be
exposed to corrosive or combustible gases.
The product may be damaged or cause an
explosion.
Before using the product, make sure that the
insulation on the test leads is undamaged and
that no bare conductors are improperly
exposed. Using the product under such
conditions could result in electrocution.
Replace the test leads with the specified Hioki
Model 3851-10.
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Notes on Use
Page 57
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CAUTION
ix
To avoid damage to the product, do not allow the
product to get wet, and do not use it when your
hands are wet.
Adjustments and repairs should be made only by
technically qualified personnel.
This product should be installed and operated indoors
only, between 0 and 40
However, it can be safely operated down to -10
and 80% RH or less.
.
Do not store or use the product where it could be
exposed to direct sunlight, high temperature or
humidity, or condensation. Under such conditions, the
product may be damaged and insulation may
deteriorate so that it no longer meets specifications.
This product is not designed to be entirely water- or
dust-proof. To avoid damage, do not use it in a wet or
dusty environment.
Do not use the product near a device that generates
a strong electromagnetic field or electrostatic charge,
as these may cause erroneous measurements.
To avoid damage to the product, protect it from
vibration or shock during transport and handling, and
be especially careful to avoid dropping.
If the protective functions of the product are
damaged, either remove it from service or mark it
clearly so that others do not use it inadvertently.
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Notes on Use
Page 58
x
―――――――――――――――――――――――――――
NOTE
To avoid corrosion from battery leakage, remove the
battery from the product if it is to be stored for a
long time.
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Notes on Use
Page 59
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Chapter 1
Overview
1.1 Product Overview
This multimeter has DCV, ACV, DCA, ACA,
OHM, Diode check and Audible continuity tests.
The built-in optical RS-232C will assist you to
capture the data without hazardous as the high
voltage has been measured.
1
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Chapter 1 Overview
Page 60
2
―――――――――――――――――――――――――――
1.2 Features
The multimeter is shown in the following Figure.
This meter has a lot of functions can be used in
HVAC, Power, Process fields, Electronic/Electrical
system diagnostics and troubleshooting. It will be
the best one of your need. See below detail:
Resolution of display: 3,999 counts
Data Hold to freeze displayed digital value.
Auto and Manual Ranging
Communication with RS-232C
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Chapter 1 Overview
Page 61
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Chapter 2
Names and
Functions of Parts
3
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Chapter 2 Names and Functions of Parts
Page 62
4
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2.1 Push Buttons
The operation of push-button is shown as below.
When push the button, a display symbol will light,
and the beeper will sound. Turning the rotary switch
to another switch setting resets all push buttons to
their default state.
button
SHIFT
For voltage and current measurements, press this
button momentarily to cycle through DC and AC
tests.
For Ohm test, press button momentarily to toggle
"Audible continuity mode" ON/OFF. Pushing this
button for more than 1 second will exit the
continuity function and returns to the autoranging ohm measurement.
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Chapter 2 Names and Functions of Parts
Page 63
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button (Data Hold)
HOLD
Press this button momentarily to toggle data hold
on or off. The display shows
HOLD
to indicate
the hold function.
button (Communication)
RS232
Press this button momentarily to toggle RS-232C
on or off.
The display shows
RS232C
to indicate the RS-
232C function has been enabled.
5
RANGE
button
In auto-range press this button momentarily to
select manual range and turn on the R
annunciator.
In manual range, press this button momentarily to
step up 1 range at one time, press this button for
more than 1 second to select auto-range.
In auto-range, the meter will select an appropriate
range for measurement being made.
The meter will select a higher range when reading
is greater than 3950 count.
The meter will select a lower range when reading
is less than about 350 count.
If a reading is greater than maximum available
range,OL(overload) is displayed on the screen.
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Chapter 2 Names and Functions of Parts
Page 64
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2.2 Rotary Switch
To select function, turn the rotary switch to a switch
setting. Then the meter is ready for use. (If you
press and hold any push button while pushing the
meter from OFF to ON, the display will remain lit
until the push button is released.)
Power off position.
AC voltage measurements.
AC or DC voltage measurements. Initial test
is defined to AC.
Ohm and Continuity measurements
Diode Check
AC or DC Current measurements
AC or DC Current measurements.
AC or DC Current measurements.
A
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Chapter 2 Names and Functions of Parts
Page 65
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2.3 Input Terminal
7
1
2
1. Volts, Ohms and Diode measurements.
2. Common terminal for all measurements.
3. Current (maximum 400 mA) measurements.
4. Current (maximum 10 A continuous)
measurements.
3
4
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Chapter 2 Names and Functions of Parts
Page 66
8
μ
A
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2.4 LCD Display Illustration
R
APS
AUTO
HOLD
RS232C
mV
Mk
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Chapter 2 Names and Functions of Parts
Enable Auto power save
Indicates AUTO range Mode
R
Indicates MANUAL range Mode
Data hold annunciator
Enable RS-232C
Direct Current or Voltage
Alternating Current or Voltage
Diode Check
Continuity function annunciator
Low battery indicator
Units of Voltage measurement
Units of Current measurement
m
Units of Resistance (ohm) measurement
Ω
Bar-graph indicator
Page 67
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Chapter 3
Measurement
Procedures
DANGER
Observe the following precautions to avoid
electric shock.
Always verify the appropriate setting of the
function selector before connecting the test
leads.
Disconnect the test leads from the
measurement object before switching the
function selector.
9
NOTE
――――――――――――――――――――――――
Accurate measurement may be impossible in the
presence of strong magnetic fields, such as near
transformers and high-current conductors, or in the
presence of strong electromagnetic fields such as
near radio transmitters.
Chapter 3 Measurement Procedures
Page 68
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Preparation for Measurement
The safety caps are attached to the test leads.
Remove these caps before connecting to the unit.
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Chapter 3 Measurement Procedures
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11
3.1 Pre-Operation inspection
To avoid the possibility of electric shock or incorrect
measurement, check the following items before using
the product. If the operation check reveals any
abnormalities, stop the check immediately and do not
use the product.
WARNING
Before using the product check that the body of
the product is not damaged. Also make sure that
the insulation on the test leads is undamaged and
that no bare conductors are improperly exposed.
Using the product in such conditions could cause
an electric shock accident may occur, so contact
your dealer or Hioki representative for repair.
For voltage measurement, short the test leads and
check that 0 V is displayed.
For Measuring Resistance or Continuity Check,
short the test leads and check that 0 Ω is displayed.
Measure a test item with a known value (battery,
AC supply, resistor, etc.) to confirm that the
known value can be displayed.
NOTE
Periodic calibration and inspecton is necessary in
order to ensure that this product operates according
to its product specifications.
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Chapter 3 Measurement Procedures
Page 70
12
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3.2 Voltage Measurement
DANGER
The maximum input voltage is 1000 V DC, 1000
V rms or 10
6
V Hz. Attempting to measure
voltage in excess of the maximum input could
destroy the product and result in personal
injury or death.
To avoid electrical shock, be careful to avoid
shorting live lines with the test leads.
For safety, test lead connections must always
be made at the secondary side of a circuit
breaker.
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Chapter 3 Measurement Procedures
Page 71
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13
3.2.1 AC Voltage Measurement
NOTE
(1) Set the rotary switch to "
"
/V ".
In the case of "
/V ", press
V"or
SHIFT
button
momentarily to cycle through DC, AC tests.
(2) Connect the black test lead to "COM" terminal
and red test lead to "
" terminal.
(3) Touch the test leads to the test points and read
the display.
The display value may sometimes fluctuate even
when the multimeter is not switched on. This is due
to induced voltage, and is not a malfunction.
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Chapter 3 Measurement Procedures
Page 72
14
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3.2.2 DC Voltage Measurement
NOTE
(1) Set the rotary switch to "
(2) Push
button momentarily to set DC test.
SHIFT
/V ".
(3) Connect the black test lead to "COM" terminal
and red test lead to "
" terminal.
(4) Touch the test leads to the test points and read
the display.
The display value may sometimes fluctuate even
when the multimeter is not switched on. This is due
to induced voltage, and is not a malfunction.
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Chapter 3 Measurement Procedures
Page 73
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15
3.3 Diode Check
DANGER
Never apply voltage to the test leads when the
Diode Check functions is selected. Doing so
may damage the product and result in personal
injury.
To avoid electrical accidents, remove power
from the circuit before measuring.
A good diode allows current to flow in one direction
only. To test a diode, turn the power off, remove the
diode from the circuit, and proceed as follows:
(1) Set the rotary switch to "
" position.
(2) Connect the black test lead to "COM" terminal
and red test lead to "
" terminal.
(3) Touch the red lead to the positive side of the
diode and the black lead to the negative side.
The meter can display diode voltage to
approximately 1.999 V.
A typical voltage is 0.3 to 0.8 V.
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Chapter 3 Measurement Procedures
Page 74
16
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Reverse the test leads and measure the voltage
across the diode again. If the diode is:
Good : "OL" is displayed.
Shorted : Near 0 V drop is displayed in both
directions, and the beeper sounds
continuously.
Open : "OL" is displayed in both directions.
Repeat step (3) and (4) for other diodes.
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Chapter 3 Measurement Procedures
Page 75
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17
3.4 Resistance Measurement
DANGER
Never apply voltage to the test leads when the
Resistance, Continuity Check functions are
selected. Doing so may damage the product
and result in personal injury.
To avoid electrical accidents, remove power
from the circuit before measuring.
(1) Set the rotary switch to "".
(2) Connect the black test lead to "COM" terminal
and red test lead to "
(3) Touch the test leads to resistor and read the
display.
(4) Press
button momentarily to toggle
SHIFT
CONTINUITY function ON/OFF. The
continuity range is 0 to 400.0 Ω.
(5) Momentarily pushing this button will only turn
the beeper off. While testing continuity, the
beeper will sound if the resistance falls below
345 counts. And it will stop if the resistance
exceeds 350 counts.
" terminal.
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Chapter 3 Measurement Procedures
Page 76
18
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Chapter 3 Measurement Procedures
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19
3.5 Current Measurement
DANGER
Never apply voltage to the test leads when a
current measurement function is selected.
Doing so may damage the product and result in
personal injury.
To avoid electrical accidents, remove power
from the circuit before connecting the test
leads.
WARNING
To prevent electrical accidents, do not use the
tester to measure current when the electric
potential is 600 V or greater. The current
function overload protection trips at either 600
V DC, 600 V rms.
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Chapter 3 Measurement Procedures
Page 78
20
―――――――――――――――――――――――――――
3.5.1 AC Current Measurement
NOTE
(1) Set the rotary switch to "
/A ".
(2) Connect the black test lead to "COM" terminal
and red test lead to "A" terminal.
(3) Touch the test leads to the test points and read
the display.
If the reading is lower than 400 mA, to get better
resolution of display, please turn the rotary switch to
mA or μA position and remove the red test lead to
"μAmA" terminal.
Instrument operated by
alternatingcurrent
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Chapter 3 Measurement Procedures
Page 79
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21
3.5.2 DC Current Measurement
NOTE
(1) Set the rotary switch to "
(2) Push
button momentarily to set DC test.
SHIFT
/A ".
(3) Connect the black test lead to "COM" terminal
and red test lead to "A" terminal.
(4) Touch the test leads to the test points and read
the display.
If the reading is lower than 400 mA, to get better
resolution of display, please turn the rotary switch to
mA or μA position and remove the red test lead to
"μAmA" terminal.
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Chapter 3 Measurement Procedures
Page 80
22
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Chapter 3 Measurement Procedures
Page 81
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23
Chapter 4
Special Functions
Instructions
This multi-meter provides the operator with various
functions including:
(1) Data Hold
(2) Auto power Save
(3) Communication (RS-232C)
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Chapter 4 Special Functions Instructions
Page 82
24
―――――――――――――――――――――――――――
4.1 Data Hold
The data hold function allows operators to hold the
displayed digital value, while the analog bar graph
continues showing the present readings. Press
button to enter the data hold mode, and the
will be displayed. Press the button again to exit. The
present reading is now shown.
HOLD
HOLD
NOTE
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Chapter 4 Special Functions Instructions
The range is held in the case of auto range.
Page 83
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25
4.2 Auto Power Save
The instrument will auto power save within 30
minutes, if the functions are not changed. When
power-off happens, the finial data is saved. You can
push any buttons to wake-up meter, the display will
indicate the finial data and the data hold has been
enabled.
DISABLE AUTO POWER SAVE
When the meter is to be used for long periods of
time, the operator might want to disable the auto
power save. Once the auto power save function is
disabled, the meter will stay on continuously. The
meter will shut off by turning the rotary switch to
the off position.
Press and hold
SHIFTorRANGEorRS232
then turn on rotary switch to any positions, until the
buzzer sounds a tone to release pushing buttons. The
annunicator of APS will turn off.
button,
NOTE
If you turn the rotary switch to other positions to
wake-up meter, the finial data will not keep.
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Chapter 4 Special Functions Instructions
Page 84
26
―――――――――――――――――――――――――――
4.3 Communication (Option)
This instrument is equipped with an RS-232C
interface-based data transmission function. If this
instrument is connected to a personal computer,
measurement data can be transferred from this
instrument to the computer where it can be recorded
and saved.
NOTE
In order to use this function, one of the following
options is required. Purchase the option that is
appropriate for your computer.
When connecting to a serial port (D-sub 9-pin
connector) on the computer side 3856-01
COMMUNICATION PACKAGE (RS-232C)
When connecting to a USB port on the computer side
3856-02 COMMUNICATION PACKAGE (USB)
See Model 3856-01 or Model 3856-02 Instruction Manual
(1) Install the software in the personal computer.
See Model 3856-01 or Model 3856-02 Instruction Manual
(2) Installing the USB Driver (when using the 3856-02)
Installs the USB Driver when the 3856-02
Communications Package is used.
See Model 3856-01 or Model 3856-02 Instruction Manual
(3) Connect the optical connector of the
communications cable to the connector on the
holster for the 3803.
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Chapter 4 Special Functions Instructions
Page 85
―――――――――――――――――――――――――――
Make sure "RS-232C
INTERFACE" is
facing downwards
27
(4) Connect the other end of the communications
cable to the personal computer. (COM1 to
COM4)
(5) Press the
RS232C
then you will find that the annunciator of
button on the multimeter,
RS232
is light on the display.
NOTE
In the case of 3856-02 (USB), there is sometimes a
possibility of communication signal interference
with other USB devices (mouse, etc.), so always
press the
RS232C
button on the multimeter after
connecting with the communication cable.
(6) Start the software. The measurement data is
transferred from the 3803 to the personal
computer.
For operation instructions, please refer to Help.
NOTE
The Help function is not compatible with
Windows Vista.
During software installation, when the folder in
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Chapter 4 Special Functions Instructions
Page 86
28
―――――――――――――――――――――――――――
the copied location is deeply embedded, the
software may sometimes not be able to initialize
even when it is executed. In this case, copy the
file in a shallower folder such as the desktop and
execute it again.
NOTE
When there is no communication, this could be
because the COM ports of the PC and the software
are not aligned. Choose the same COM port as the
PC in the [Setup] - [COM Port] of the software.
See Model 3856-01 or Model 3856-02 Instruction Manual
When the COM ports
are not aligned, [Error
Could not Connect] will
be displayed.
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Chapter 4 Special Functions Instructions
Page 87
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29
Chapter 5
Specifications
5.1 General Specifications
Measurement
Mode
AC measurement
Mode
Function
Additional
Function
Type of Display
Display
Range
Selection
Measuring Rate
The liquid crystal display (LCD) is 4 digits with
maximum reading 3999 counts.
41 segments analog bar graph and full
annunciator
Automatic polarity indication.
Approx. 200 hours (DCV Function at 6F22
manganese battery)
0to40 (32 to 104 ) less than 80% RH
(no condensation)
-20 to 60(-4 to 140 ) less than 80% RH
(no condensation)
Indoors, altitude up to 2000 m
3851-10 TEST LEAD (a pair)
Protective holster
Manual
6F22 manganese battery (built in)
3851-10 TEST LEAD (a pair)
Protective holster
3853 CARRYING CASE
3854 RS-232C PACKAGE
mA
μA
D086483P (Made by FERRAZ Inc.)
0.5 A/660 V, φ 6.35-32 mm, Breaking Capacity
30 kA
or 70125 (Made by SIBA Inc.)
0.5 A/700 V, φ 6.35-32 mm, Breaking Capacity
50 kA
A
TDC600 (Made by Cooper Bussmann Inc.)
10 A/600 V, φ 6.35-25.35 mm, Breaking
Capacity 10 kA
31
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Chapter 5 Specifications
Page 90
32
―――――――――――――――――――――――――――
Applicable
Standards
Safety
EMC
EN 61010
Pollution 2, Measurement Category II
(1000 V), Measurement Category III
(600 V)
(anticipated transient overvoltage
6000 V)
EN61326
――――――――――――――――――――――――
Chapter 5 Specifications
Page 91
―――――――――――――――――――――――――――
33
5.2 Accuracy Chart
Temperature and humidity for guaranteed accuracy
235(739 ), 80% RH or less, no condensation
Guaranteed accuracy period
1year
(1) DC VOLTAGE
RangeResolutionAccuracy
400.0 mV0.1 mV
4.000 V1mV
40.00 V10 mV
400.0 V0.1 V
1000 V1V
Input Impedance: 10 MΩ
0.6%rdg. 2dgt.
(2) AC VOLTAGE
-1. 40 Hz to 200 Hz
RangeResolutionAccuracy
400.0 mV0.1 mV2%rdg. 10dgt.
4.000 V1mV
400.0 V0.1 V
1000 V1V2.2%rdg. 5dgt.
2%rdg. 2dgt.40.00 V10 mV
Overload
Protection
1000 V DC/
1000 V rms
6
V Hz
or 10
Overload
Protection
1000 V DC/
1000 V rms
6
V Hz
or 10
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Chapter 5 Specifications
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34
―――――――――――――――――――――――――――
-2. 200 Hz to 500 Hz
RangeResolutionAccuracy
400.0 mV0.1 mV-
4.000 V1mV
2%rdg. 2dgt.40.00 V10 mV
400.0 V0.1 V
1000 V1V2.2%rdg. 5dgt.
Input Impedance: 10 MΩ
Overload
Protection
1000 V DC/
1000 V rms
6
V Hz
or 10
(3) DC CURRENT
Range
400.0 μA0.1 μA
4000 μA1 μA50 Ω
40.00 mA10 μA5 Ω
400.0 mA 0.1 mA0.5 Ω
10.00 A10 mA1.5%rdg. 5dgt.0.05 Ω
10 A continuous, 10 to 20 A for 15 seconds maximum with 5
minutes cool down interval.
Resolu-
tion
Accuracy
1.5%rdg. 2dgt.
Internal
Resistance
(approx)
500 Ω
Overload
Protection
0.5 A/600 V
Quick
Acting Fuse
10 A/600 V
Quick
Acting Fuse
(4) AC CURRENT
40 Hz to 500 Hz
Range
400.0 μA0.1 μA
4000 μA1 μA50 Ω
40.00 mA10 μA5 Ω
400.0 mA 0.1 mA0.5 Ω
10.00 A10 mA2%rdg. 5dgt.0.05 Ω
10 A continuous, 10 to 20 A for 15 seconds maximum with 5
minutes cool down interval.
――――――――――――――――――――――――
Chapter 5 Specifications
Resolut
-ion
Accuracy
2%rdg. 2dgt.
Internal
Resistance
(approx)
500 Ω
Overload
Protection
0.5 A/600 V
Quick
Acting Fuse
10 A/600 V
Quick
Acting Fuse
Page 93
―――――――――――――――――――――――――――
35
(5) RESISTANCE
Range
400.0 Ω0.1 Ω
4.000 kΩ1 Ω
40.00 kΩ10 Ω
400.0 kΩ100 Ω
4.000 MΩ1kΩ1.2%rdg. 3dgt.
40.00 MΩ10 kΩ2%rdg. 3dgt.
Resolut
-ion
Accuracy
0.6%rdg. 3dgt.
Maximum
Test
Voltage
1.2 V
max.
0.45 V
max.
Overload
Protection
600 V DC/
600 V rms
(6) AUDIBLE CONTINUITY TEST
RangeThreshold Level
The beeper will sound if the
400.0Ω
resistance falls below 34.5 Ω.
And it will stop if the resistance
exceeds 35.0 Ω.
The measurement accuracy and open terminal voltage (test voltage)
are the same as these of Ω function.
Overload
Protection
600 V DC/
600 V rms
(7) DIODE CHECK
Range
1.999 V
Resolution
Accuracy
1mV
1.0%rdg. 2dgt.
Test Current
Voltage
approx. 1.65 mA
Less than 3 V
Overload
Protection
600 V DC/
600 V rms
――――――――――――――――――――――――
Chapter 5 Specifications
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36
―――――――――――――――――――――――――――
――――――――――――――――――――――――
Chapter 5 Specifications
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37
Chapter 6
Maintenance and
Service
6.1 Changing the Battery and Fuses
WARNING
To avoid electric shock when replacing the
battery and fuse, first disconnect the test leads
from the object to be measured, then open the
cover.
After replacing the battery or fuse, replace the
cover and screws before using the product.
When replacing the battery, Be sure to insert
them with the correct polarity. Otherwise, poor
performance or damage from battery leakage
could result. Replace battery only with the
specified type.
To avoid the possibilit y of explosion, do not short
circuit, disassemble or incinerate battery.
Handle and dispose of battery in accordance with
local regulations.
Replace the fuse only with one of the specified
characteristics and voltage and current ratings.
Using a non-specified fuse or shorting the fuse
holder may cause a life-threatening hazard.
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Chapter 6 Maintenance and Service
Page 96
38
―――――――――――――――――――――――――――
Use the following procedures to replace the battery,
or fuse.
(1) Using the rotary switch to turn the meter off,
and remove the test leads from terminals.
(2) Loosen 3 screws on bottom cover, pull up and
move the cover.
(3) Replace the defective battery.
The meter is powered by a 6F22 battery. Replace
battery if the low battery sign (
) is displayed
and flashes.
(4) Remove the defective fuse by gently prying one
end of the fuse loose and sliding the fuse out of
the fuse bracket.
Install a new fuse of the same size and rating.
Make sure the new fuse is centered in the fuse
holder. There are 2 types of fuses, one for the
μA , mA terminal and one for the A terminal.
Be sure to set the correct fuse.
(5) Reverse the procedure of opening cover to close
the bottom cover.
――――――――――――――――――――――――
Chapter 6 Maintenance and Service
Page 97
―――――――――――――――――――――――――――
y
For μA mA terminal fuse :
D086483P
(Made by FERRAZ Inc.)
F0.5A/660V, 6.35mm-
6F22 manganese batter
32mm dia.
or 70125
(Made bySIBA Inc.)
0.5 A/700 V, 6.35-32 mm
dia.
For A terminal fuse :
TDC600 (Made by Cooper
Bussmann Inc.)
10A/600V, 6.35 mm-25.35
mm dia.
39
――――――――――――――――――――――――
Chapter 6 Maintenance and Service
Page 98
40
―――――――――――――――――――――――――――
6.2 Cleaning
To clean the product, wipe it gently with a soft
cloth moistened with water or mild detergent. Never
use solvents such as benzene, alcohol, acetone,
ether, ketones, thinners or gasoline, as they can
deform and discolor the case.
6.3 Service
If the product seems to be malfunctioning, confirm
that the battery are not discharged, and that the test
leads, and fuse are not open circuited before
contacting your dealer or Hioki representative.
When sending the product for repair, pack the
product carefully so that it will not be damaged
during shipment, and include a detailed written
description of the problem. Hioki cannot be
responsible for damage that occurs during shipment.
――――――――――――――――――――――――
Chapter 6 Maintenance and Service
Page 99
Page 100
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