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HIOKI DT4282
User guide
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User guide [de]
118 pgs11.58 Mb0

HIOKI HIOKI DT4282 User guide

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DT4281
DT4282
Instruction Manual
DIGITAL MULTIMETER
Read carefully before use.
Keep for future reference.
Jan. 2022 Revised edition 9 DT4281A981-09 22-01H
EN

Contents

Introduction .........................................................................1
Verifying Package Contents ..............................................2
Options (sold separately) ..................................................2
Safety Notes ........................................................................ 6
Usage Notes ...................................................................... 11
1 Overview 15
1.1 Overview and Features ................................. 15
1.2 Parts Names and Functions ......................... 16
1.3 Display ...........................................................21
1.4 Alarm Display and Battery Indicator ...........23
1
1
1
2
2
3
2 Preparation for Measurements 25
2.1 MeasurementWorkow ................................ 25
2.2 Inserting/Replacing Batteries ......................26
2.3 Using Test Leads ........................................... 28
2.4 Installation in Measurement Location ......... 31
Using the instrument with the stand .......................... 31
Hanging the instrument with the strap ......................31
3 Performing Measurements 33
3.1 Inspection Before Use ..................................33
3.2 Measuring Voltage......................................... 37
Measuring AC voltage ............................................... 37
Measuring DC voltage ..............................................38
Measuring synthesized voltage of DC and AC .........38
Measuring voltage of DC and AC components .........39
3.3 Measuring Frequencies ................................ 39
3.4 Decibel Conversion (dBm/dBV) ................... 40
DT4281A981-09
4
5
6
7
Ind.Appx.
i
Contents
3.5 Checking Continuity .....................................41
3.6 Measuring Diode ...........................................42
3.7 Measuring Resistance ..................................43
3.8 Measuring Temperatures .............................. 44
3.9 Measuring Electrostatic Capacities ............. 46
3.10 Measuring Conductances
3.11 Measuring Current ........................................48
Measuring DC/AC ..................................................... 48
3.12 Measuring AC Using Clamp-on Probe
(DT4281) ......................................................... 50
3.13 4-20 mA (0-20 mA) % Conversion ................ 52
3.14 Measuring DC Voltage with the DC High
Voltage Probe ................................................ 53
Making Measurements .............................................54
(DT4282) ................47
4 Using Instrument Conveniently 55
4.1 Selecting the Measurement Range .............. 55
Measuring with the auto range .................................55
Measuring with the manual range ............................. 55
4.2 Retaining the Measured Value .....................57
Retaining the measured value manually (HOLD) ..... 57
Automatically retaining the measured value
when the value stabilizes (AUTO HOLD)..................57
4.3 When the Measured Value Fluctuates
(SLOW) ........................................................... 59
4.4 Removing the Harmonic Components
of the Inverter (FILTER) ................................. 60
4.5 Checking the Maximum/Minimum Value
(MAX/MIN) ......................................................61
4.6 Checking the Peak Value (V • A PEAK) .......62
ii
Contents
4.7 Checking the Relative Value/Performing
Zero Adjustment ............................................ 63
Checking the relative value (REL) ............................63
Performing zero adjustment ...................................... 64
4.8 Using the Memory Function ......................... 65
Saving the measured value (MEM) ..........................65
Reading the memory data (READ) ........................... 67
Clearing the memory data (CLEAR) ......................... 68
Clearing all memory data .......................................... 68
4.9 Muting the Buzzer .........................................69
4.10 Turning On the Backlight ..............................69
4.11 Using the Auto Power Save (APS) ............... 70
4.12 Using Plus/Minus Judgment Function
for Measurement Value .................................71
4.13 Communicating with PC ............................... 72
4.14 Setting and Checking the System ...............74
Checking that all indicators are displayed ................74
Checking the software version of the instrument ...... 74
Changing the temperature display unit ..................... 75
4.15 Resetting the System ....................................76
Table of default settings ............................................ 76
4.16 Power-on Option Table .................................77
5 Specications 79
5.1 Electrical Characteristics .............................79
5.2 Accuracy Table .............................................. 81
5.3 GeneralSpecications .................................95
1
212
3
4
5
6
7
6 Maintenance and Service 99
6.1 Repair, Inspection, and Cleaning ................. 99
6.2 Troubleshooting ..........................................101
6.3 Error Display ................................................ 105
Ind.Appx.
iii
Contents
6.4 Replacing Fuses .......................................... 106
Appendix Appx.1
Appx. 1 RMS and Average .............................Appx.1
Appx. 2 Operation Example ........................... Appx.2
Appx. 3 Capacitor Capacity Measurement
Principle.............................................Appx.3
Appx. 4 Dedicated Software
(DMM Communicator) ......................Appx.4
iv

Introduction

Introduction
Thank you for purchasing the HIOKI DT4281, DT4282 Digital Multimeter. To obtain maximum performance from the product,
please read this manual rst, and keep it handy for future reference.
1
The latest edition of the instruction manual
The contents of this manual are subject to change, for example as a result of product improvements
or changes to specications.
The latest edition as well as multilingual editions of the manual (in Chinese, French, German, Korean, and Spanish) can be downloaded from Hioki’s website.
https://www.hioki.com/global/support/download
Intended audience
This manual has been written for use by individuals who use the product or provide information about how to use the product. In explaining how to use the product, it assumes electrical knowledge (equivalent of the knowledge possessed by a graduate of an electrical program at a technical high school).
2
3
4
5
6
7
Ind.Appx.
1

Verifying Package Contents

電池
Verifying Package Contents
When you receive the instrument, inspect it carefully to ensure that no damage occurred during shipping. In particular, check the accessories, panel switches, and connectors. If damage is evident, or if it fails to operate according
to the specications, contact your authorized Hioki distributor or
reseller.
Check the package contents as follows.
DT4281 or DT4282
L9207-10 Test Lead (p. 28)
LR6 Alkaline battery ×4
Instruction Manual
DT4281 DT4282

Options (sold separately)

The options listed below are available for the instrument. To order an
option, please contact your authorized Hioki distributor or reseller.
Options are subject to change. Please check Hioki’s website for the latest information.
2
Connecting cables
When attaching the L4933 or L4934 to a test
lead, do so in the measurement category II
1
L9300*
Test Lead
L9207-10* Test Lead
L4930*2 Connection Cable Set (10 A)
L4931* Extension Cable Set (10 A)
(Length: 1.5 m, with the coupling connector)
P2000 DC High Voltage Probe
CAT IV 1000 V CAT III 2000 V
*1: CAT IV 600 V/CAT III 1000 V/CAT II 1000 V *2: CAT IV 600 V/CAT III 1000 V *3: CAT III 1000 V *4: CAT III 600 V *5: CAT III 300 V/CAT II 600 V *6: 30 V AC/60 V DC *7: CAT III 600 V/CAT II 600 V *8: CAT II 1000 V
(10 A)
1
(10 A)
(Length: 1.2 m)
2
conguration (for the L9207-10, with the sleeve
removed).
* Figures in parentheses: maximum rated current
Options (sold separately)
L4933*6 Contact Pin Set (3 A)
5
L4934*
mall Alligator Clip Set (3 A)
S
2
L4935*
Alligator Clip Set (10 A)
8
L9243*
Grabber Clip
L4936*
Bus Bar Clip Set
L4937*
Magnetic Adapter Set (2 A)
L4932*
Test Pin Set (10 A)
L4938*
Test Pin Set (10 A)
L4939*
Breaker Pin Set (10 A)
(1 A)
4
(5 A)
3
1
7
4
1
2
3
4
5
6
7
Ind.Appx.
3
Options (sold separately)
For the clamp current measurement (only compatible with the DT4281)
9010-50, 9018-50, 9132-50*
Clamp-on Probe
9704 Conversion Adapter
4
Clamp-on probe
9010-50, 9018-50 500 A rmsφ46 mm or less
9132-50 1000 A rmsφ55 mm or less, 80 × 20 mm bus-bar
Rated current
Diameter of the measurable conductor
Temperature measurement
DT4910 Thermocouples (K) (p. 44)
• Temperature measuring junction: Exposed type (welding)
• Sensor length: Approx. 800 mm
• Operating temperature: -40°C to 260°C (temperature
measuring part), -15°C to 55°C (connector)
C0202 Carrying Case
The instrument, test leads, instruction manual, and others can be stored in the case.
Z5004, Z5020 Magnetic Strap (p. 31)
Attach this strap to the instrument and secure it on the wall surface such as a metal plate for use.
4
DT4900-01 Communication Package (USB) (p. 72)
A communication adapter, USB cable, PC software,
and communication specications are included.
The instrument data can be stored on the PC.
Options (sold separately)
1
2
3
4
5
6
7
Ind.Appx.
5

Safety Notes

Safety Notes
This instrument is designed to conform to IEC 61010 Safety Standards, and has been thoroughly tested for safety prior to shipment. However, using the instrument in a way not described in this manual may negate the provided safety features.
Before using the instrument, be certain to carefully read the following safety notes.
DANGER
Mishandling during use could result in injury or death, as well as damage to the instrument. Be certain that you understand the instructions and precautions in the manual before use.
WARNING
With regard to the electricity supply, there are risks
of electric shock, heat generation, re, and arc
discharge due to short circuits. If persons unfamiliar with electricity measuring instruments are to use the instrument, another person familiar with such instruments must supervise operations.
Protective gear
To avoid electric shock when measuring live lines, wear appropriate protective gear, such as insulated rubber gloves, boots and a safety helmet.
6
WARNING
Safety Notes
Notation
In this manual, the risk seriousness and the hazard levels are classied as follows.
DANGER
WARNING
CAUTION
IMPORTANT
Indicates an imminently hazardous situation that will
result in death or serious injury to the operator.
Indicates a potentially hazardous situation that may
result in death or serious injury to the operator.
Indicates a potentially hazardous situation that may
result in minor or moderate injury to the operator or damage to the instrument or malfunction.
Indicates information related to the operation of the instrument or maintenance tasks with which the operators must be fully familiar.
Indicates a high voltage hazard.
If a particular safety check is not performed or the instrument is mishandled, this may give rise to a
hazardous situation; the operator may receive an
electric shock, may get burnt or may even be fatally injured.
Indicates a strong magnetic-eld hazard.
The effects of the magnetic force can cause abnormal operation of heart pacemakers and/or medical electronics.
Indicates prohibited actions.
1
2
3
4
5
6
*
Indicates the action which must be performed.
7
Additional information is presented below.
Ind.Appx.
7
Safety Notes
Symbols afxed to the instrument
Indicates cautions and hazards. When the symbol is printed on
the instrument, refer to a corresponding topic in the Instruction Manual.
Indicates that dangerous voltage may be present at this terminal.
Indicates a double-insulated device.
Indicates a fuse.
Indicates a grounding terminal.
Indicates DC (Direct Current).
Indicates AC (Alternating Current).
Indicates DC (Direct Current) or AC (Alternating Current).
Symbols for various standards
Indicates the Waste Electrical and Electronic Equipment Directive (WEEE Directive) in EU member states.
Indicates that the instrument conforms to regulations set out by the EC Directive.
8
Safety Notes
TEMP C
TEMP FVERSION
Screen display
This instrument uses the following screen displays.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
1 2 3 4 5 6 7 8 9 0
A different display is used in the case below.
Appears when a broken Thermocouple (K) is detected. (p. 44)
1
2
3
Accuracy
We dene measurement tolerances in terms of rdg. (reading) and
dgt. (digit) values, with the following meanings:
(Reading or displayed value)
rdg.
The value currently being measured and indicated on the measuring instrument.
(Resolution) The smallest displayable unit on a digital measuring instrument,
dgt.
i.e., the input value that causes the digital display to show a “1”
as the least signicant digit.
4
5
6
7
Ind.Appx.
9
Safety Notes
Measurement categories
To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards for various electrical environments,
categorized as CAT II to CAT IV, and called measurement categories.
DANGER
• Using a measuring instrument in an environment
designated with a higher-numbered category than that for which the instrument is rated could result in a severe accident, and must be carefully avoided.
• Using a measuring instrument without categories in
an environment designated with the CAT II to CAT IV category could result in a severe accident, and must be carefully avoided.
This instrument conforms to the safety requirements for CAT III 1000 V, CAT IV 600 V measuring instruments. CAT II: When directly measuring the electrical outlet receptacles of
CAT III: When measuring the primary electrical circuits of heavy equipment
CAT IV: When measuring the circuit from the service drop to the service
See: “2.3 Using Test Leads” (p. 28)
the primary electrical circuits in equipment connected to an AC electrical outlet by a power cord (portable tools, household appliances, etc.)
(xed installations) connected directly to the distribution panel,
and feeders from the distribution panel to outlets
entrance, and to the power meter and primary overcurrent protection device (distribution panel)
Distribution panel
Service entrance
Service drop
CAT IV
Power meter
Internal wiring
CAT III
Fixed installation
CAT II
T
Outlet
10

Usage Notes

Usage Notes
Follow these precautions to ensure safe operation and to obtain the
full benets of the various functions. Use of the instrument should conrm not only to its specications, but also to the specications of all accessories, options, batteries,
and other equipment in use.
DANGER
If the test lead or the instrument is damaged, there is a risk of electric shock. Before using the instrument, perform the following inspection.
• Before using the instrument, check that the coating of
the test leads are neither ripped nor torn and that no metal parts are exposed. Using the instrument under such conditions could result in electrocution. Replace
the test leads with those specied by our company.
• Before using the instrument for the rst time, verify that
it operates normally to ensure that no damage occurred
during storage or shipping. If you nd any damage,
contact your authorized Hioki distributor or reseller.
Installation
Installing the instrument in inappropriate locations may cause a malfunction of instrument or may give rise to an accident. Avoid the following locations. For details on the operating temperature and
humidity, see the specications. (p. 95)
1
2
3
4
5
6
• Exposed to direct sunlight or high temperature
• Exposed to corrosive or combustible gases
• Exposed to water, oil, chemicals, or solvents
• Exposed to high humidity or condensation
• Exposed to a strong electromagnetic eld or electrostatic charge
• Exposed to high quantities of dust particles
• Near induction heating systems (such as high-frequency induction heating systems and IH cooking equipment)
• Susceptible to vibration
CAUTION
7
Ind.Appx.
11
Usage Notes
Handling the cables
WARNING
To prevent electric shock, when measuring the
voltage of a power line use a test lead that satises
the following criteria:
• Conforms to safety standards IEC 61010 or EN 61010
• Of measurement category III or IV
• Its rated voltage is higher than the voltage to be
measured All of the optional test leads for this device conform to the safety standard EN 61010. Use a test lead in
accordance with its dened measurement category
and rated voltage.
CAUTION
• Avoid stepping on or pinching the cable, which could damage the cable insulation.
• To avoid damaging the cables, do not bend or pull the leads and the probe bases.
The ends of the test leads are sharp. Be careful to avoid injury.
For the test leads supplied with the instrument or the options to be connected to the instrument, see the following information.
Accessories and options Reference
Test lead “2.3 Using Test Leads” (p. 28)
Thermocouples (K) “3.8 Measuring Temperatures” (p. 44)
Clamp-on probe
USB cable “4.13 Communicating with PC” (p. 72)
Magnetic strap
See the Instruction Manual which accompanies the optional clamp.
“2.4 Installation in Measurement Location” (p. 31)
12
Precautions during measurement
WARNING
If the instrument is used in locations where the rating indicated on the instrument or probes is exceeded, the instrument may be damaged resulting in personal injury. Do not use the instrument in such locations. See “Measurement categories” (p. 10).
• With regard to the 10 A range, the maximum input current is 10 A DC/10 A rms AC. Supplying a current in excess of the maximum input may damage the instrument and result in personal injury. Do not
supply current in excess of the specied limit. (Only
the DT4282)
Observe the following to avoid electric shock and/or short circuits.
• Hazardous voltage may be generated in a free measurement terminal. Do not touch the free terminal.
• Use only test leads and optional equipment
specied by our company.
• Do not allow the metal part of the test lead to touch any exposed metal, or to short between 2 lines. Never touch the metal end.
• When connecting the clip-type test lead to the active terminal, do not allow the lead to touch any exposed metal, or to short between 2 lines.
• When the clamp-on probe is opened, do not allow the metal part of the clamp to touch any exposed metal, or to short between 2 lines, and do not use over bare conductors. (For the clamp current measurement, only the DT4281)
Usage Notes
1
2
3
4
5
6
7
Ind.Appx.
13
Usage Notes
CAUTION
• Do not input voltage or supply current exceeding the
specied measurement range. Doing so may damage
the instrument.
• During the continuity check, diode test, or measurement of resistance, conductance, or electrostatic capacity, measurement signals are generated in the terminals of the instrument. Depending on the target for measurement, the measurement signal may cause damage. Seeing “Measurement current” and “Open circuit voltage” in the accuracy table (p. 81), check, in advance, that there are no adverse effects of the measurement current and the open circuit voltage.
Precautions during shipment
Observe the following during shipment. Hioki cannot be responsible for damage that occurs during shipment.
CAUTION
• During shipment of the instrument, handle it carefully so that it is not damaged due to a vibration or shock.
• To avoid damage to the instrument, remove the accessories and optional equipment from the instrument before shipment.
If the instrument is not to be used for an extended period of time
IMPORTANT
To avoid corrosion and/or damage to the instrument due to battery leakage, remove the batteries from the instrument if it is to be kept in storage for an extended period.
14
1
100V85.9V114.1V
85.9V114.1V 100V
100V
±14.1V

Overview

1.1 Overview and Features

This measuring instrument is a multi-function, high-precision digital multimeter which ensures both safety and durability.
Main features
• Speedy display of the RMS measured value
• Environmental performance (can be used anywhere) (Operation temperature: -15 to 55°C)
• High noise-proof performance
• Filter function effective for the inverter measurement
• Solid body which can be used for an extended period of time (drop-proof)
• High accuracy (DCV: 0.025%), wide band (20 Hz to 100 kHz) measurement
• Speedy measurement via a fast response (0 V → 100 V response 1 second*)
* Until the value falls within the accuracy specication range.
If too many data are entered, a hazard is indicated by the
red backlight.
Large, easily-viewable display Backlighting for use in dark
environments
For the DC power supply maintenance
The peak measurement function is used to capture the ripple voltage superimposed on the DC signal.
PEAK max
The measurement test leads and the end pins can be selected depending on the purpose of use.
PEAK min
Problem nding a
suitable installation location?
The strap with magnet allows the device to be hung conveniently.
Useful functions during measurement
• Noise reduction (FILTER)
• Display stability (SLOW)
• Display hold (HOLD)
• Maximum/Minimum value display
Memorizing measured values
For control of the UPS
battery cell voltage, etc., the measurement value can be saved to the embedded memory (up to 400 data). The measurement value can also be read.
Data transmission to PC,
control
The optional DT4900-01 Communication Package is required.
1
2
3
4
5
6
7
Appx. Ind.
15
Parts Names and Functions

1.2 Parts Names and Functions

Front
Some indications are different between the DT4281 and DT4282.
Display
(p. 21)
Operation
keys (p. 17)
Rotary switch
(p. 18)
Measurement
terminals
(p. 19)
DT4281 DT4282
16
Operation keys
1
2
3
5
4 6
7
9
10
8
Parts Names and Functions
(*) Pressing a key for at least 1 second activates
the function indicated above the key. To disable the function, change the rotary switch setting.
1
2
1
2
3
Changes to the peak measurement. The maximum or minimum instantaneous value is measured. (p. 62)
4
5
6
7
8
9
10
Turns on or off the display backlighting. (p. 69)
Increases/Decreases the memory No. or numeric value. (When / are displayed on the LCD, these keys can be operated.)
Changes the function of the rotary switch to that indicated shown in blue.
• Displays the maximum or minimum value. (p. 61)
• (*) activates the relative value display function. (p. 63)
• Selects the range (manual range). (p. 55)
• (*) changes to the auto range. (The default is the auto range.)
• Deletes the stored data. (p. 68)
• Clears the maximum or minimum value. (p. 61)
• Clears the peak value. (p. 62)
• Retains the displayed value. (p. 57)
• (*) activates the auto hold function.
• Reads the stored data. (p. 67)
• (*) toggles the lter function between on and off. (p. 60)
• Saves the measurement data. (p. 65)
• (*) toggles the display update speed between normal and slow. ([SLOW] is used to stabilize the display.) (p. 59)
17
3
4
5
6
7
Appx. Ind.
Parts Names and Functions
1
5
1
2
3
4
5
6
7
8
9
5
10
Rotary switches and measurement descriptions
4
3
2
6
7
3
8
2
9
1
DT4281
is used to change to the measurement shown in blue.
DT4281
: DT4281 only,
DT4281
10
(
1
2
3
4
5
6
7
8
9
Turns off the power to the instrument.
AC voltage measurement (p. 37) → dBm measurement → dBV measurement (p. 40) →
measurement (p. 50)
DC voltage measurement (p. 38)
Synthesized voltage measurement of DC and AC → Voltage
measurement of AC and DC components (p. 38)
Continuity check (p. 41) → Diode test (p. 42)
Resistance measurement (p. 43) → Temperature
measurement (compatible with the Thermocouples (K)) (p. 44)
Capacitance measurement (p. 46) →
measurement (p. 47)
(6000 µA range) DC measurement → AC measurement (p. 48)
(600 mA range) DC measurement → AC measurement (p. 48) →
% conversion of the 4-20 mA input (The % conversion of the
0-20 mA input can be specied via the power-on option.) (p. 52)
(10 A range)
DT4282
DC measurement → AC measurement (p. 48)
4
DT4282
DT4282
Clamp current
DT4282
6
7
: DT4282 only)
Conductance
8
9
18
Parts Names and Functions
Measurement terminals
1 2 3 42 3 4
DT4281 DT4282
DT4282
1
Current measurement (A) terminal. The red test lead is connected. When the rotary switch is set to the current measurement, the shutter opens.
Current measurement (µA, mA) terminal. The red test lead is
2
connected. When the rotary switch is set to the current measurement, the shutter opens.
Commonly used for each measurement. The black test lead is
3
connected.
Used for voltage measurement, resistance measurement, continuity
4
check, diode test, temperature measurement, clamp current measurement referred to as “V terminal”. The red test lead is connected. When the rotary switch is set to any of the measurements above, the shutter of the current measurement terminal is closed.
DT4281
, or conductance
DT4282
. Hereafter
1
2
3
4
5
6
Be sure to carefully read the precautions in the following references.
See “Precautions during measurement” (p. 13).
See “Replacing Fuses” (p. 106).
7
Appx. Ind.
19
Parts Names and Functions
Rear
Serial number label
It is necessary for production control such as product warranty. Do not peel off the label.
Communication port
When the communication adapter supplied with the optional DT4900-01 Communication Package is connected, the data can be transmitted to the PC. (p. 72)
Test lead holder
The test lead can be held.
Strap hole
The optional Z5004 or Z5020 Magnetic Strap can be attached. (p. 31)
Stand
The instrument can be set on the stand. (p. 31)
Battery cover
When replacing the batteries (p. 26) or fuse (p. 106), remove the cover.
See p. 26.
20

1.3 Display

1
3
5
7
6
89
10
11
4
2
For error displays, see “6.3 Error Display” (p. 105).
Memory No.
Display
1
2
1
2
3
4
5
Main display
Sub display
Blinks if the maximum value in each range is
exceeded. (Voltage, current, continuity, diode, resistance, temperature, electrostatic capacity, conductance)
Holds measured value. (p. 57)
The auto hold function is activated. (p. 57)
Communicating with the PC. (p. 72)
The memory function is activated. (p. 65)
Memory reading state (p. 67)
Stored data exist. (p. 65)
/ can be operated. (p. 65)
Battery indicator (p. 24)
The auto power save function is activated. (p. 70)
The buzzer can be used. (p. 69)
3
4
5
6
7
Appx. Ind.
21
Display
6
(Unit) Each unit
7
8
9
10
11
Maximum value (p. 61)
Minimum value (p. 61)
The display update (sampling) is performed at SLOW speed. (p. 59)
The lter function is activated. (p. 60)
The relative value display function is activated. (p. 63)
Auto range (p. 55)
Manual range (p. 55)
Maximum value in the peak measurement (p. 62)
Minimum value in the peak measurement (p. 62)
When  are displayed, / can be used to change values. Threshold of the continuity check (p. 41) Threshold of the diode test (p. 42)
AC measurement
DC measurement
AC measurement + DC measurement
During the temperature measurement, the temperature difference from the standard is displayed. (p. 44)
Continuity check (p. 41)
Diode test (p. 42)
Clamp current measurement (p. 50)
DT4281
% conversion measurement of 4-20 mA (0-20 mA) (p. 52)
DT4281
(
: DT4281 only,
22
DT4282
: DT4282 only)
Alarm Display and Battery Indicator
4-20
dBV
COPY: MEAS_
dBm

1.4 Alarm Display and Battery Indicator

The following conditions are informed via the red backlight,
display, and buzzer.
When the maximum input range is exceeded
Voltage/Current measurement
blinks, the red backlight blinks, the maximum value within the maximum range blinks, and the buzzer sounds.
Corrective action:
Immediately move the test leads away from the measurement object.
When the measured value exceeds the maximum value in each range (Range over)
Voltage/Current measurement
blinks, the red backlight lights up,
and the maximum value blinks.
1
2
3
4
5
Corrective action:
Corrective action:
Change the range, or measure the
samples in the specied range.
If the same symptom still occurs, check that the test leads are not broken.
Change the range.
Measurements other than voltage and current
and the maximum value blinks.
(p. 34)
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7
Appx. Ind.
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Alarm Display and Battery Indicator
TEMP C
TEMP FVERSION
TEMP C
TEMP FVERSION
When the Thermocouple (K) is broken (Temperature measurement)
Corrective action:
Check that the thermocouple has been connected correctly to the measurement terminal. If the display does not change, replace with a new Thermocouple (K). (p. 44)
Battery indicator
Fully charged. (Charge: 60% or more)
As the battery charge diminishes, black charge bars disappear, one by one, from the left of the battery indicator.
The battery voltage is low. Replace the batteries as soon as possible.
(Blinks) The battery is exhausted.
Replace the batteries.
The charge is only a reference for the continuous operation time. (p. 96)
(Charge: 20% or more)
(Charge: 5% or more)
(Charge: less than 5%)
Power shutdown
When the charge is 0% (less than 3.8 V ± 0.2 V), [bAtt Lo] is displayed for 1 second and the power is shut down.
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