Hioki DT4281, DT4282 Instruction Manual

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Page 1

DT4281 DT4282

DIGITAL MULTIMETER

Instruction Manual

Apr. 2015 Revised edition 6 DT4281A981-06 15-04H

Page 2

Contents

Introduction .........................................................................1

Verifying Package Contents ..............................................1

Options (sold separately) ..................................................2

Safety Notes ........................................................................ 5

Usage Notes ...................................................................... 10

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

2 Preparation for Measurements 25

2.1 Measurement Workﬂ 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.........................................38

Measuring AC voltage ............................................... 38

Measuring DC voltage ..............................................39

Measuring synthesized voltage of DC and AC .........39

Measuring voltage of DC and AC components ......... 40

3.3 Measuring Frequencies ................................40

3.4 Decibel Conversion (dBm/dBV) ................... 41

DT4281A981-06

Ind.Appx.

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Contents

3.5 Checking Continuity ..................................... 42

3.6 Measuring Diode ........................................... 43

3.7 Measuring Resistance .................................. 44

3.8 Measuring Temperatures ..............................45

3.9 Measuring Electrostatic Capacities ............. 47

3.10 Measuring Conductances

(DT4282) ................48

3.11 Measuring Current ........................................49

Measuring DC/AC .....................................................49

3.12 Measuring AC Using Clamp-on Probe

(DT4281) ......................................................... 51

3.13 4-20 mA (0-20 mA) % Conversion ................53

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

4.7 Checking the Relative Value/Performing

Zero Adjustment ............................................63

Checking the relative value (REL) ............................63

Performing zero adjustment ...................................... 64

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Contents

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 Speciﬁ cations 79

5.1 Electrical Characteristics ............................. 79

5.2 Accuracy Table .............................................. 81

5.3 General Speciﬁ cations .................................95

212

6 Maintenance and Service 99

6.1 Repair Inspection and Cleaning ................. 99

6.2 Troubleshooting ..........................................101

6.3 Error Display ................................................ 105

6.4 Replacing Fuses .......................................... 106

iii

Ind.Appx.

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Contents

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

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Introduction

Thank you for purchasing the HIOKI DT4281, DT4282 Digital Multimeter. To obtain maximum performance from the product, please read this manual ﬁ rst, and keep it handy for future reference.

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 speciﬁ cations, contact your authorized Hioki distributor or reseller.

Check the package contents as follows.

DT4281 or DT4282

DT4281 DT4282

L9207-10 Test Lead (p. 28)

LR6 Alkaline battery × 4

Instruction Manual

(English)

Instruction manuals may also be available in other languages. Please visit our website at

http://www.hioki.com

Ind.Appx.

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Options (sold separately)

The following options are available for the instrument. Contact your authorized Hioki distributor or reseller when ordering.

Connecting cables

*1: CATIV 600 V/CATIII 1000 V/CATII 1000 V *2: CATIV 600 V/CATIII 1000 V *3: CATIII 1000 V *5: CATIII 300 V/CATII 600 V *4: CATIII 600 V *6: 33 V AC/70 V DC *7: CATIII 600 V/CATII 600 V

L4933*

Contact Pin Set

L9207-10*

Test Lead

L4930*

Connection Cable Set

(Length: 1.2 m)

L4931*

Extension Cable Set

(Length: 1.5 m, with the coupling connector)

L4934*

Small Alligator Clip Set

L4935*

Alligator Clip Set

9243*

Grabber Clip

L4936*

Bus Bar Clip Set

L4937*

Magnetic Adapter Set

L4932*

Test Pin Set

L4938*

Test Pin Set

L4939*

Breaker Pin Set

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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

Clamp-on probe

9010-50, 9018-50 500 A rms46 mm or less

9132-50 1000 A rms55 mm or less, 80 × 20 mm bus-bar

Temperature measurement

C0202 Carrying Case

Z5004 Magnetic Strap (p. 31)

Rated current

DT4910 Thermocouples (K) (p. 45)

• 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)

The instrument, test leads, instruction manual, and others can be stored in the case.

Attach this strap to the instrument and secure it on the wall surface such as a metal plate for use.

Diameter of the measurable conductor

Ind.Appx.

Page 9

Options (sold separately)

DT4900-01 Communication Package (USB) (p. 72)

A communication adapter, USB cable, PC software, and communication speciﬁ cations are included. The instrument data can be stored on the PC.

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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, ﬁ 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

WARNING

To avoid electric shock when measuring live lines, wear appropriate protective gear, such as insulated rubber gloves, boots and a safety helmet.

Ind.Appx.

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Safety Notes

Notation

In this manual, the risk seriousness and the hazard levels are classiﬁ 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-ﬁ eld hazard. The effects of the magnetic force can cause abnormal operation of heart pacemakers and/or medical electronics.

Indicates prohibited actions.

Indicates the action which must be performed.

Additional information is presented below.

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Symbols afﬁ 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.

Safety Notes

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.

Ind.Appx.

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Safety Notes

Screen display

This instrument uses the following screen displays.

AB CD E FGH I J K LMNOPQR S TU VWXY Z

123456 7890

A different display is used in the case below.

Appears when a broken Thermocouple (K) is detec ted. (p. 45)

Accuracy

We deﬁ 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-signiﬁ cant digit.

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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.)

(ﬁ 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

Ind.Appx.

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Usage Notes

Follow these precautions to ensure safe operation and to obtain the full beneﬁ ts of the various functions.

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 speciﬁ ed by our company.

• Before using the instrument for the ﬁ rst time, verify

that it operates normally to ensure that no damage occurred during storage or shipping. If you ﬁ 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 speciﬁ cations. (p. 95)

CAUTION

• 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 ﬁ 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

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Usage Notes

Handling the cables

WARNING

To prevent electric shock, when measuring the voltage of a power line use a test lead that satisﬁ es the following criteria:

• Conforms to safety standards IEC61010 or EN61010

• 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 EN61010. Use a test lead in accordance with its deﬁ 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. 45)

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)

Ind.Appx.

Page 17

Usage Notes

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. 9).

• With regard to the 10 A range, the maximum input current is 10 A DC/10 Arms 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 speciﬁ 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 speciﬁ 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)

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Usage Notes

CAUTION

• Do not input voltage or supply current exceeding the speciﬁ 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.

Ind.Appx.

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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 speciﬁ cation range.

If there is an excessive input, a hazard is indicated by the

red display.

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

100V85.9V114.1V

Problem ﬁ 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.

Appx. Ind.

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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

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Operation keys

Parts Names and Functions

(*) Pressing a key for at

least 1 second activates

the function indicated

above the key the function, change the rotary switch setting.

. To disable

• 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.)

Changes to the peak measurement. The maximum or minimum instantaneous value is measured. (p. 62)

• 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 ﬁ 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)

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.

Appx. Ind.

Page 22

Parts Names and Functions

Rotary switches and measurement descriptions

DT4281

is used to change to the measurement shown in blue.

DT4281

: DT4281 only,

(

Turns off the power to the instrument.

AC voltage measurement (p. 38)  dBm measurement  dBV measurement (p. 41)  measurement (p. 51)

DC voltage measurement (p. 39)

Synthesized voltage measurement of DC and AC  Voltage measurement of AC and DC components (p. 39)

Continuity check (p. 42)  Diode test (p. 43)

Resistance measurement (p. 44)  Tem pe rat ur e measurement (compatible with the Thermocouples (K)) (p. 45)

Capacitance measurement (p. 47)  measurement (p. 48)

(6000 A range) DC measurement  AC measurement (p. 49)

(600 mA range) DC measurement  AC measurement (p. 49)  % conversion of the 4-20 mA input (The % conversion of the 0-20 mA input can be speciﬁ ed via the power-on option.) (p. 53)

(10 A range)

DT4282

DC measurement  AC measurement (p. 49)

DT4282

DT4281

DT4282

: DT4282 only)

Clamp current

Conductance

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Parts Names and Functions

Measurement terminals

12 3 4234

DT4281 DT4282

DT4282

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 (A, mA) terminal. The red test lead is

connected. When the rotary switch is set to the current measurement, the shutter opens.

Commonly used for each measurement. The black test lead is

connected.

Used for voltage measurement, resistance measurement, continuity

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

Be sure to carefully read the precautions in the following references.

See “Precautions during measurement” (p. 12).

See “Replacing Fuses” (p. 106).

Appx. Ind.

Page 24

Parts Names and Functions

(p )

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 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.

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1.3 Display

For error displays, see “6.3 Error Display” (p. 105).

Memory No.

1 2

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)

Main display

Sub display

Display

Appx. Ind.

Page 26

Display

(Unit) Each unit

Maximum value (p. 61)

Minimum value (p. 61)

The display update (sampling) is performed at SLOW speed. (p. 59)

The ﬁ 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. 42) Threshold of the diode test (p. 43)

AC measurement

DC measurement

AC measurement + DC measurement

During the temperature measurement, the temperature difference from the standard is displayed. (p. 45)

Continuity check (p. 42)

Diode test (p. 43)

Clamp current measurement (p. 51)

DT4281

% conversion measurement of 4-20 mA (0-20 mA) (p. 53)

DT4281

(

: DT4281 only,

DT4282

: DT4282 only)

Page 27

Alarm Display and Battery Indicator

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.

Corrective action:

and the maximum value blinks.

Change the range.

Measurements other than voltage and current

Appx. Ind.

Corrective action:

Change the range, or measure the samples in the speciﬁ ed range. If the same symptom still occurs, check that the test leads are not broken.

(p.34)

Page 28

Alarm Display and Battery Indicator

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. 45)

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.

Page 29

Preparation for Measurements

2.1 Measurement Workﬂ ow

Before using the instrument, be sure to read “Usage Notes” (p. 10).

Installation and connection

Insert the batteries. (p. 26)

Perform the startup check. (p. 33)

Measurement

Turn on the power and select the measurement function.

Attach the test leads to the measurement terminals. (p. 28)

(As necessary, perform zero adjustment. (p. 64))

Connect the test leads to the measurement object.

(As necessary)

Hold the display of the measured value. (p. 57) Save the measured value. (p. 65)

As necessary, have other optional items available and ready.

Black

Red

Appx. Ind.

End of the measurement

Move the test leads away from the measurement object and then turn off the power.

Page 30

Inserting/Replacing Batteries

2.2 Inserting/Replacing Batteries

Before using the instrument ﬁ rst time, insert four LR6 alkaline batteries. Before measurements, check that the battery level is sufﬁ cient. When the battery charge diminishes, replace the batteries.

Nickel-metal hydride batteries

Nickel-metal hydride batteries can be used. However, the discharge characteristic of these batteries is different from that of alkaline batteries. Be aware that the remaining battery power display does not function properly.

WARNING

To avoid electric shock, disconnect the test leads from the object to be measured before replacing the batteries.

To avoid the possibility of explosion, do not short circuit, charge, disassemble, or incinerate batteries.

After battery replacement but before using the instrument, reattach and screw down the battery cover.

CAUTION

Poor performance or damage from battery leakage could result. Observe the cautions listed below.

• Do no mix new and old batteries, or different types of batteries.

• Be careful to observe the battery polarity during installation.

• Do not use batteries after their recommended expiry date.

• Do not allow used batteries to remain in the instrument.

• To avoid corrosion from battery leakage and/or damage to the instrument, remove the batteries from the instrument if it is to be kept in storage for an extended period.

Page 31

Inserting/Replacing Batteries

• The indicator appears when the battery charge diminishes. Replace the batteries as soon as possible.

• After use, be sure to turn off the instrument.

• Handle and dispose of batteries in accordance with local regulations.

Have the following items

available and ready.

• Phillips screwdriver

•Alkaline (LR6) battery or manganese (R6) battery × 4

Remove the test leads from

Screws

Rear

the instrument.

Set the rotary switch to OFF.

Using a Phillips screwdriver,

remove the screws (2 locations) from the battery cover on the rear of the instrument.

Remove the battery cover.

When replacing the batteries,

remove all old batteries.

Insert 4 new batteries (LR6

or R6), being careful to the battery polarity.

Reattach the battery cover.

Secure the cover with the

screws.

After the battery cover is removed, the fuse can be seen. When replacing the fuse, see “6.4 Replacing Fuses” (p. 106).

Appx. Ind.

Page 32

Using Test Leads

2.3 Using Test Leads

The L9207-10 Test Lead supplied with the instrument are used for measurements. Depending on measurement locations, use our optional measurement cables. For details on the optional items, see “Options (sold separately)” (p. 2).

WARNING

• To prevent a short circuit accident, be sure to

use the test leads with the sleeves attached when performing measurements in the CAT III and CAT IV measurement categories. (For the measurement categories, see “Measurement categories” (p. 9).)

• If the sleeves are inadvertently removed during

measurement, stop the measurement.

CAUTION

• To ensure safe operation, use only test leads speciﬁ ed by our company.

• When carrying out measurements with the sleeves in place, be careful to avoid damaging the sleeves.

• The tips of the metal pins are sharp and may cause injury. Do not touch the tips.

Page 33

L9207-10 Test lead

Black

Red

Barriers

Using Test Leads

Sleeves

Plugs

Metal pin Connect to the object to be measured.

Sleeve Attach to the metal pins to prevent short circuit accidents.

Barrier Represents the safe handling distance from the metal pins.

Plug Connect to the measurement terminals on this instrument.

Cable Double sheathed cables (Length: approx. 900 mm, Diameter:

Cables

The plugs of the test leads are covered with the safety caps.

Before use, remove the caps.

Safety cap

4 mm or less (sleeve attached) 19 mm or less (sleeve removed) Diameter  approx. 2 mm

During measurement, do not touch the area between the barrier and the tip of the sleeve.

approx. 3.6 mm)



When the white portion inside the cable is exposed, replace with a new L9207-10 Test Lead.

Metal pins

Appx. Ind.

Page 34

Using Test Leads

Removing and attaching the sleeves

Removing the sleeves Attaching the sleeves

Gently hold the bottom of the sleeves and pull the sleeves off. Safely store the removed sleeves so as not to lose them.

Connecting to the instrument

Turn the rotary switch to the desired

measurement function.

Connect the test leads to the relevant

measurement terminals.

• Besides the current measurement (excluding the clamp)

COM terminal Connect the black test lead. V terminal Connect the red test lead.

• Current measurement

COM terminal Connect the black test lead. μA/mA terminal Connect the red test lead. A terminal (Only the DT4282)

Insert the metal pins of the test leads into the holes of the sleeves, and ﬁ rmly push them all the way in.

Page 35

Installation in Measurement Location

2.4 Installation in Measurement Location

Using the instrument with the stand

Position the instrument with the stand at the rear.

CAUTION

• Do not position the instrument on an unstable table or inclined surface.

• When the instrument is set on the stand, do not apply a strong force above. Doing so may damage the stand.

Hanging the instrument with the strap

Attach the optional Z5004 Magnetic Strap to the instrument and attach the magnet to the wall surface (with metal plate afﬁ xed).

Strap holes

Magnet

Attach it to the wall surface (with metal plate afﬁ xed).

Appx. Ind.

Page 36

Installation in Measurement Location

DANGER

Those with medical electronics such as pacemakers should not use the Z5004 Magnetic Strap. Nor should such persons approach the Z5004. It is extremely dangerous. The electronics may not operate properly and the life of the operator may be put at great risk.

CAUTION

• Do not use the Z5004 in locations where it may be exposed to rainwater, dust, or condensation. In those conditions, the Z5004 may be decomposed or deteriorated. The magnet adhesion may be diminished. In such case, the instrument may not be hung in place and may fall.

• Do not bring the Z5004 near magnetic media such as ﬂ oppy disks, magnetic cards, pre-paid cards, or magnetized tickets. Doing so may corrupt and may render them unusable. Furthermore, if the Z5004 is brought near precision electronic equipment such as PCs, TV screens, or electronic wrist watches, they may fail.

Page 37

Performing Measurements

3.1 Inspection Before Use

Before using the instrument the ﬁ rst time, verify that it operates normally to ensure that the no damage occurred during storage or shipping. If you ﬁ nd any damage, contact your authorized Hioki distributor or reseller.

Appearance check of the instrument and test leads

Check item Action

The instrument is neither damaged nor cracked. The internal circuits are not exposed.

The terminals are not contaminated with debris.

The coating of the test leads is neither broken nor frayed, or the white portion or metal part within the lead is exposed.

Check when turning on the power

(Set the rotary switch to any position other than OFF.)

Check item Action

The battery voltage is sufﬁ cient.

Visually check the instrument. If it is damaged, there is a risk of electric shock. Do not use the instrument but send it for repair.

Remove contamination with a cotton swab.

If the test lead is damaged, there is a risk of electric shock. Do not use the instrument but send it for repair.

When the top right corner of the display, the battery voltage is low. Replace the batteries as soon as possible.

indicator appears in the

Appx. Ind.

Page 38

Inspection Before Use

Check item Action

No indicators are missing. Display all indicators and ensure that no

indicators are missing. (p. 74) If any of the indicators are missing, send the instrument for repair.

Operation check

This section introduces some of the operation checks. Periodical calibration is necessary in order to ensure that this instrument operates according to its speciﬁ cations.

Check that the test leads are not broken.

Check method Action

Regarding the continuity check, deliberately short circuit the test leads and then check the display.

Black

Red

Normal:

The value stabilizes at around 0.1

to 0.2



Abnormal:

A numeric value other than the above appears.

Corrective action:

The test leads may be broken. Replace with those speciﬁ ed by our company. If the same phenomena persist even after the test leads are replaced, a malfunction may occur. Halt inspection and then send the instrument for repair.



Page 39

Inspection Before Use

Measure samples (such as battery, commercial power

supply, and resistor) of which values have already been known, and check that the appropriate values appear.

Check method Action

Example: Perform the AC voltage measurement to measure the commercial power supply, and then check the display.

Normal:

An already-known value appears. (In this example, the commercial voltage level should appear.)

Abnormal:

The measured value does not appear. The malfunction may occur. Stop the inspection and do not use the instrument.

Black

Check that the fuse is not broken.

Check method Action

1. Remove the fuse from the instrument. (p. 106)

2. Reattach the battery cover.

3. In the resistance measurement, check the resistance of the fuse. (Resistance measurement (p. 44))

Red

Normal:

Fuse rating Resistance

630 mA Approx. 1.2

11 A 0.1  or less

Abnormal:

If the value above is not obtained (the value higher than that is displayed), replace the fuse. (p. 106)



Appx. Ind.

Page 40

Inspection Before Use

Before measurements

Observe the following to avoid short circuit accidents.

• Always verify the appropriate setting of the rotary

switch before connecting the test leads.

• Disconnect the test leads from the measurement

object before switching the rotary switch.

• Operate or connect the instrument by following

the procedure of each measurement example (or procedure steps).

WARNING

Page 41

Inspection Before Use

Auto power save function

• Before shipping (In the default setting), the auto power save function is set to enabled. If the instrument has not been operated for approx. 15 minutes, it enters the sleep mode. (When the instrument is in the sleep mode, press any key or turn the rotary switch to recover from the sleep mode.)

When the sleep mode continues for approx. 45 minutes, the power turns off automatically.

• To recover from the power off state, set the rotary switch to OFF and then turn on the power again.

• During current measurement, before setting the rotary switch to OFF, disconnect the test leads. If the rotary switch is forcibly turned, the shutter may be damaged.

• If the instrument will be used for an extended period of time, disable the auto power save function. (p. 70)

• After use, set the rotary switch to OFF. The auto power save function consumes a small amount of current.

Numerical value display with no input

When the measurement terminal is open during DC voltage (DCV) measurement or AC voltage (ACV) measurement in the 60 mV range or 600 mV, a random value is displayed. This does not indicate a malfunction of the instrument. When the probe is connected to the measurement target, a normal numerical value is displayed. A high-input impedance voltmeter is used in the instrument for highly sensitive measurement. Consequently, external noise, such as inductive noise, appears as a numerical value.

Appx. Ind.

Page 42

Measuring Voltage

3.2 Measuring Voltage

AC voltage, DC voltage, synthesized voltage of DC and AC, and voltage of AC and DC components can be measured. Furthermore, the maximum, minimum, and peak (instantaneous) values of measured values can be checked. (p. 61)

Before measurements

WARNING

The autoranging function of this instrument automatically selects the optimum measurement range. To change the range arbitrarily, use the manual range. (p. 55)

Measuring AC voltage

Measure the AC voltage.

Measure the frequency simultaneously.

The measured value is a true RMS. (p. Appx.1)

Black

Red

Page 43

Measuring DC voltage

Measuring Voltage

Measure the DC voltage.

Black

Red

Measuring synthesized voltage of DC and AC

Black

Red

Measure the synthesized voltage of DC and AC. The measured value is a true RMS. (p. Appx.1)

Appx. Ind.

It is also possible to check the AC or DC components individually. (p. 40)

Page 44

Measuring Frequencies

Measuring voltage of DC and AC components

Synthesized voltage

Black

Red

DC component

AC component

Voltage of the DC component Voltage of the AC component

3.3 Measuring Frequencies

During voltage/current measurement of AC, the frequency can be checked in the sub display. It is not possible to change the frequency range.

Frequency

• If signals out of the range of frequency measurement are measured,

[-----] appears. Be aware of it.

• The sensitivity of the frequency measurement is regulated by range.

(Minimum sensitivity voltage (p. 92), Minimum sensitivity current (p. 92)) When the value is less than the minimum sensitivity voltage (current), the indicated value may ﬂ uctuate. When the voltage (current) range is lowered, the value stabilizes. This does not apply to cases where the value ﬂ uctuates due to noise.

• During the measurement of low frequency, if the auto range does not

stabilize and frequency cannot be measured, ﬁ x the range and measure again.

Page 45

Decibel Conversion (dBm/dBV)

3.4 Decibel Conversion ( dBm/dBV)

The result of the AC voltage measurement is decibel-converted for the standard and then displayed. For details on the conversion formula, see “Decibel conversion measurement” (p. 93).

dBm For the voltage measurement, the “power ratio” for power 1 mW by

the standard resistance is decibel-converted and then displayed. (Cable loss)

dBV For the voltage measurement, the “voltage ratio” for the standard

voltage 1 V is decibel-converted and then displayed. (V

Black

Example: Measuring the [dBm] cable loss

Electric telecommunication line

Ampliﬁ er

Transmitter

Red

([dBm] or [dBV] lights up)

In the case of [dBm]

In the case of [dBV]

oltage gain)

Frequency

Changing the standard impedance of the dBm conversion

Turn on the power while pressing

/ (Select a desired value.)

Standard impedance

selection range (p. 93)

The regular display reappears. Even after the power is turned off, the setting is retained.

(Conﬁ rm the value.)

Appx. Ind.

Page 46

Checking Continuity

3.5 Checking Continuity

The input short circuit is detected and informed via a buzzer and red backlight.

WARNING

Before measuring, be sure to turn off the power to the measurement circuit. Otherwise, electric shock may occur or the instrument may be damaged.

Black

Red

Changing thresholds

Use

/ to change a threshold. Even after the power is

turned off, the setting is retained.

Threshold Measurement result

Detection

Open detection

Short circuit detection



(default)

220

or more



or less



250 

or more



or less

100 500 Buzzer

300 

or more

100

or less



600 

or more

500

or less

Resistance

Threshold

Does not

sound



Sounds Turns on

Red

backlight

Turns off

Page 47

Measuring Diode

3.6 Measuring Diode

The forward voltage of the diode is measured. If the forward voltage of the diode is the threshold or less, it is informed via a buzzer and red backlight.

WARNING

Before measuring, be sure to turn off the power to the measurement circuit. Otherwise, electric shock may occur or the instrument may be damaged.

Forward voltage

Black

Changing thresholds

Use

Threshold: 0.15 V/0.5 V (default)/1 V/1.5 V/2 V/2.5 V/3.0 V Even after the power is turned off, the setting is retained.

/ to change a threshold.

Anode Cathode

Red

Threshold

In the case of the opposite connection

Appx. Ind.

Page 48

Measuring Resistance

3.7 Measuring Resistance

Resistance is measured.

WARNING

Before measuring, be sure to turn off the power to the measurement circuit. Otherwise, electric shock may occur or the instrument may be damaged.

Black

The open terminal voltage is approx. 2.5 V or less. The measurement current (DC) varies depending on the range. (p. 86) To avoid damage to the measurement object, check the speciﬁ cations before use.

Red

Page 49

Measuring Temperatures

3.8 Measuring Temperatures

Using our optional DT4910 Thermocouples (K), temperatures can be measured.

CAUTION

To avoid damage to the instrument, do not input any voltage or supply current to the thermocouple.

When a breaking state of the Thermocouples (K) is detected

Be careful to observe the polarity when connecting the thermocouple.

DT4910

Checking the temperature change

Check the following values.

• Relative value display (p. 63)

• Maximum/Minimum value display (p. 61)

Changing the temperature units

Celsius and Fahrenheit can be switched. (p. 75)

Appx. Ind.

Page 50

Measuring Temperatures

When measuring temperatures with the thermocouple applied to the surface of the measurement object

Clean the surface so that the thermocouple can make contact with the object securely.

If no numeric value is displayed after the thermocouple is attached ([OPEn] is displayed):

The instrument or thermocouple may be malfunctioning. Check this with the following procedure.

Short-circuit the V and COM terminals of the instrument

using the test leads.

The ambient temperature is displayed.

The ambient temperature is not displayed.

Connect the thermocouple in the correct direction.

[OPEn] remains displayed.

To step 2

The instrument is malfunctioning. Send it for repair.

The thermocouple may be malfunctioning (blown). Replace the thermocouple with a new one.

Page 51

Measuring Electrostatic Capacities

3.9 Measuring Electrostatic Capacities

The capacity of the capacitor is measured.

WARNING

Before measuring, be sure to turn off the power to the measurement circuit. Otherwise, electric shock may occur or the instrument may be damaged.

Do not measure the capacitor which has been charged.

Black

• When measuring the polar capacitor

Connect the V terminal (red test lead) to the + terminal of the capacitor and the COM terminal (black test lead) to the terminal.

• For components on a circuit board, measurement may not be possible due to the effect of the peripheral circuit.

• If the capacity changes when the measurement range is changed (p. Appx.3)

Red

Appx. Ind.

Page 52

Measuring Conductances (DT4282)

3.10 Measuring Conductances

The resistance is measured and the inverse number is displayed (Unit: nS, nano-siemen). When the resistance is excessively large, it is used.

Example: When the resistance is 50 M (M = 106, n = 10-9) When the terminal is open, 0 nS appears.

, 1/50 M = 20 nS.



(DT4282)

WARNING

Before measuring, be sure to turn off the power to the measurement circuit. Otherwise, electric shock may occur or the instrument may be damaged.

Black

Red

The open terminal voltage is approx. 2.5 V or less. The measurement current (DC) is approx. 96 nA. (p. 87) To avoid damage to the measurement object, check the speciﬁ cations before use.

Page 53

Measuring Current

3.11 Measuring Current

DC/AC is measured.

DANGER

• Do not input any voltage to the current

measurement terminals. Doing so may result in short circuit accidents.

• To avoid electrical accidents, turn off the power to

the circuit before measuring and then connect the test leads.

Measuring DC/AC

Function

μA Selected to measure 6000 A

mA Selected to measure 600 mA or less.

A Selected to measure 10 A or less.

(DT4282)

* The 0-20 mA input can be selected via the power-on option. (p. 77)

or less.

is used to toggle

between DC and AC.

→

  *

→

When measuring an unknown current

Set to the high range (mA for the DT4281, A for the DT4282).

Appx. Ind.

Page 54

Measuring Current

DT4281, DT4282

Control board

Red

Example: Measuring the current of the burner ﬂ ame (μA)

The measured current value of the burner ﬂ ame varies with the input impedance of the instrument. The A input impedance of this instrument is approx. 100 .

DT4282

Power supply

Black

Load

Red

Page 55

Measuring AC Using Clamp-on Probe (DT4281)

Clamp-

accordance w

measuremen

3.12 Measuring AC Using Clamp-on

Probe (DT4281)

The current is measured using our optional clamp-on probe (901050, 9018-50, 9132-50). To connect to this instrument, the 9704 Conversion Adapter is required. Before using the clamp-on probe, be sure to read the Instruction Manual which accompanies the optional clamp.

Set the clamp-on probe and the instrument to the same range.

Current

range

9704 Conversion Adapter

704 Conversion Adapter

Clamp-on Probe

on Prob

Change the range in

hange the

accordance with the actual measurement. If the range of the clamp-

If the range

on probe is changed during

on probe is

measurement, change the range of the instrument as well.

Appx. Ind.

Page 56

Measuring AC Using Clamp-on Probe (DT4281)

When clamping a cable

Attach the clamp around only one conductor. Single-phase (2-wire) or three-phase (3-wire) cables clamped together will not produce any reading.

When blinks

The measured value exceeds maximum display counts. Increase the range.

NO NO

Page 57

4-20 mA (0-20 mA) % Conversion

3.13 4-20 mA (0-20 mA) % Conversion

The 4-20 mA (or 0-20 mA) signal of the instrumentation system can be converted to 0% to 100% and checked.

• 4 mA - 20 mA  0% - 100% (An input exceeding 20 mA is displayed up to a maximum of 350%.)

• 0 mA - 20 mA  0% - 100% (An input exceeding 20 mA is displayed up to a maximum of 300%.)

Changing to the 0-20 mA signal

Sensor

Black

Two-wire transmitter

Red

4-20 mA

24 V

Distributor

Turn on the power while

pressing .

Output signal

/ (Select a desired

value.)

The regular display reappears. Even after the power is turned off, the setting is retained.

(Conﬁ rm the value.)

Appx. Ind.

Page 58

Using Instrument

Conveniently

4.1 Selecting the Measurement Range

Auto or Manual range can be selected. In the case of measurement where the desired range can be selected, [RANGE:] lights up in the bottom left of the display.

• Auto range Sets the optimum range automatically in

accordance with the actual measurement.

• Manual range Sets the range and ﬁ xes it speciﬁ cally.

Measuring with the auto range

When the manual range is set, pressing for at least 1 second changes to the auto range. The instrument automatically selects the optimum measurement range.

Measuring with the manual range

Press .

Each time the key is pressed, a higher range is speciﬁ ed. When the key is pressed at the highest range, the lowest range is speciﬁ ed once again. Example: When measuring the AC voltage

60 mV 600 mV 600 V 1000 V

When the measurement function is switched using the rotary switch or

SHIFT, or when the peak measurement is canceled, the auto range is

enabled.

Appx. Ind.

Page 59

Selecting the Measurement Range

Range display list

ACV, DCV 60 mV, 600 mV, 6 V, 60 V, 600 V, 1000 V

DC+ACV 6 V, 60 V, 600 V, 1000 V

(Electrostatic

capacity)

DCA, ACA 600 A, 6000 A, 60 mA, 600 mA, 6 A, 10 A

AC clamp 10 A, 20 A, 50 A, 100 A, 200 A, 500 A, 1000 A

PEAK (DCV) 6 V, 60 V, 600 V, 1000 V

PEAK (ACV) 18 V, 180 V, 1500 V

PEAK (DC+ACV) 18 V, 180 V, 1500 V

PEAK (DCA/ACA) 1200 A, 12000 A, 120 mA, 1200 mA, 12 A, 15 A

PEAK (AC clamp) 30 A, 60 A, 150 A, 300 A, 600 A, 1500 A, 3000 A

60 , 600 , 6 k, 60 k, 600 k, 6 M, 60 M, 600 M



1 nF, 10 nF, 100 nF, 1 F, 1 0 F, 100 F, 1 mF, 10 mF, 100 mF

Page 60

Retaining the Measured Value

4.2 Retaining the Measured Value

The measured value is retained manually or automatically.

• Manually When HOLD is pressed, the measured value is

retained.

Automatically When HOLD is pressed and held for at least 1

•

second, auto mode starts. When the measured value stabilizes, it is retained.

Retaining the measured value manually ( HOLD)

To retain the measured value,

press .

measurement value is retained.)

To cancel the hold state, press it again. (

( lights up and the

goes off.)

Automatically retaining the measured value when the value stabilizes ( AUTO HOLD)

Press for at least 1 second.

( lights up.)

When the measured value stabilizes, a beeping sound is generated and the value is retained.

lights up.)

( If HOLD is pressed again, or the input signal exceeds the dead zone threshold again (see table on the next page), or when the range is switched internally and the measured value is stabilized once again, the hold state is canceled. ( To disable the auto hold function, press it for at least 1 second again. (

goes off.)

Appx. Ind.

Page 61

Retaining the Measured Value

• If the input signal is too small for the relevant range (dead zone threshold p. 58), the measured value cannot be automatically retained.

• If the difference between the current and previous measured values remains less than the counts in the stable ﬁ eld of the table below, the instrument determines the current value has stabilized.

Dead zone threshold

Function Stable (count)

AC voltage

DC voltage

DC voltage + AC voltage

Continuity check 100 5900

Diode test 80 3520

Resistance

Conductance 1200 1200

A 1200 1200

AC (clamp input) 5% of the range 5% of the range

* No function is available for the mV range.

mA 1200 1200

A 1200 1200

mA 1200 1200

1200, 200

(1000 V range)

1200, 200

(1000 V range)

1200, 200

(1000 V range)

1200, 120

(60/600M



1200, 200

(10 A range)

1200, 200

(10 A range)

range)

Dead zone threshold

(count)

1200, 200

(1000 V range) *

1200, 200

(1000 V range) *

1200, 200

(1000 V range)

58800, 5880

(60/600M range)

1200, 200

(10 A range)

1200, 200

(10 A range)

Page 62

When the Measured Value Fluctuates (SLOW)

4.3 When the Measured Value Fluctuates ( SLOW)

When the measured value ﬂ uctuates and cannot be read, it is possible to stabilize the value. (When is lit)

• When

is off (normal): refer to the display update rate

(p.80) (Default setting)

is lit (slow): ﬁ ve times normal (average of 5 times)

Press for at least 1 second.

( lights up.)

To cancel the state, press it for at least 1 second again.

goes off.)

(

When the measurement function is switched using the rotary switch or SHIFT, the SLOW setting is disabled.

Appx. Ind.

Page 63

Removing the Harmonic Components of the Inverter (FILTER)

4.4 Removing the Harmonic Components of the Inverter (FILTER)

WARNING

To prevent electric shock, before setting the ﬁ lter function, conﬁ rm if there is a voltage or not with the ﬁ lter function disabled (OFF).

Remove the harmonic components when measuring the inverter output. This function can be used when measuring the AC voltage or AC+DC voltage. The cut-off frequency is 630 Hz.

Press for at least 1 second.

( lights up.)

To cancel the state, press it for at least 1 second again.

goes off.)

(

Only 600V/1000V range. When the measurement function is switched using the rotary switch or SHIFT, the ﬁ lter function is canceled.

When measuring voltage with a 400 Hz fundamental frequency (such as that on an aircraft), be aware that the FILTER function may cause attenuation and the indicated voltage may be 20% lower than the actual voltage. The characteristics of the FILTER function (low pass ﬁ lter) are shown in the graph.

0dB

-10dB

-20dB

-30dB

-40dB 10Hz 100Hz 1000Hz 10000Hz

Page 64

Checking the Maximum/Minimum Value (MAX/MIN)

4.5 Checking the Maximum/Minimum Value ( MAX/MIN)

The maximum/minimum value after start of the measurement can be checked.

Press .

Each time the key is pressed, the display is changed in the order of the maximum value (MAX), minimum value (MIN), and current value.

A buzzer sounds when the maximum value is updated with MAX displayed or the minimum value is updated with MIN displayed.

The maximum and minimum values are for the displayed value; they do not relate to peak values such as AC signals. The main and sub displays update their maximum and minimum values individually.

Clearing the existing maximum/minimum value

When MAX or MIN appears, press

Both maximum and minimum values are cleared. After this, the maximum and minimum measurement values after clearing the previous ones are retained.

When saving to memory, only the value displayed on the screen (current value, maximum value, or minimum value) can be saved.

Appx. Ind.

Page 65

Checking the Peak Value (V • A PEAK)

4.6 Checking the Peak Value (V • A PEAK)

After starting the voltage/current peak measurement, the maximum/ minimum instantaneous value can be checked.

The peak measurement can be performed only with the manual range. Press RANGE to select the appropriate range before starting the measurement. (For the range conﬁ guration and display range, see page 84)

Maximum instantaneous value

Minimum instantaneous value

A buzzer sounds when PEAKmax or PEAKmin is updated.

Press .

The maximum/minimum instantaneous value can be retained, from the point at which

is pressed.

To cancel the display of the peak value, press it again.

Clearing the maximum/minimum instantaneous value

Press .

The maximum/minimum instantaneous value can be displayed, from the point at which

is pressed.

Page 66

Checking the Relative Value/Performing Zero Adjustment

4.7 Checking the Relative Value/ Performing Zero Adjustment

The relative value comparing to the standard value can be checked (relative function). It can also be used as the zero adjustment function. Zero adjustment eliminates the inﬂ uences of the wiring resistance (resistance measurement) and the wiring capacity (capacitor measurement).

When the following measurement function is selected, this function is disabled. Peak measurement, Continuity, Diode, dBm/dBV, 4-20 mA

The measurement range cannot be changed when [REL] is lit. To change the range, press REL for at least 1 second to reset the REL function.

Checking the relative value ( REL)

Example 1: DC voltage measurement

When the standard value is measured,

press

lights up)

(

To cancel the state, press it for at least 1 second again. (

Example 2: Temperature measurement

When measuring temperature, [REF] lights up and a standard temperature appears in the sub display.

Deviation from the standard temperature

Standard temperature

for at least 1 second

goes off.)

Appx. Ind.

Page 67

Checking the Relative Value/Performing Zero Adjustment

Performing zero adjustment

When performing zero adjustment, the condition of the test leads varies depending on the measurement function. Perform zero adjustment, referring to the table below.

Measurement function V, A,

Condition of the test leads Short circuit Open

RedBlack

Black

Red



Example 1: Resistance measurement

Select the measurement

function. Connect the test leads to

the measurement terminals. Allow the test leads to

short circuit.

Press for at least

1 second.

(After zero adjustment: 0.000 )

Measure the resistance.

Example 2: Capacitor measurement

Select the measurement

function. Connect the test leads to

the measurement terminals. Allow the test leads to

open.

Press for at least

1 second.

(After zero adjustment: 0.000 nF)

Measure the capacitor.

, nS

Page 68

Using the Memory Function

4.8 Using the Memory Function

The measurement result can be saved and read using the memory function. Up to 400 data can be saved. Data can also be deleted arbitrarily. The saved data can be imported to the PC using the DT4900-01 Communication Package (optional).

Saving the measured value (MEM)

Press ( lights up).

Memory mode starts.

Memory No.

This function applies until the power is turned off.

The memory No. appears (only for the measurement which can be saved).

Select the memory No. to be

saved using / .

When the key is pressed and held, the memory No. can be incremented/ decremented faster.

Press to save the

measured value.

When the measured value is saved, the memory No. for which the value is to be saved next appears. Even when the power is turned off, the memory data are retained.

Appx. Ind.

Page 69

Using the Memory Function

• If the memory No. for which the data have already been saved is selected, [

• When MEM is pressed, the data are overwritten. When the value is saved with memory No. “400” displayed, a buzzer

• sounds and “FULL” appears in the display, and then “001” reappears.

• When [ value.

• The current value, maximum value (MAX), minimum value (MIN), instantaneous maximum value (Peak max), and instantaneous minimum value (Peak min) cannot be saved simultaneously. Only the displayed numeric value can be saved.

• The continuity check data and the diode test data cannot be saved.

] appears.

] (data reading) is displayed, it is not possible to save the

When both hands cannot be used during measurement

Enable the auto hold function. After the measured value is retained automatically, press MEM to save the data.

Items to be saved per data

• Function

• Measurement range

• Measured value in the main display

• Measured value in the sub display

• Whether or not the REL function is executed

• Filter ON/OFF

Page 70

Reading the memory data (READ)

Using the Memory Function

Memory No.

Press ( lights up).

Read mode starts.

Select the desired memory No.

using / .

Only the memory Nos. corresponding to saved data are displayed.

Canceling the read mode

Press READ again or turn the rotary switch.

goes off.)

(

When no memory data exist

The relevant message appears and then the regular measurement display reappears.

Appx. Ind.

Page 71

Using the Memory Function

Clearing the memory data (CLEAR)

Memory No.

Press ( lights up).

Read mode starts.

Select the No. to be cleared using

/ .

Press .

Clearing all memory data

Turn on the power while pressing

The relevant message appears in the display.

Press again within 3

seconds.

All memory data are now cleared.

When 3 seconds elapse without pressing

CLEAR, all memory data are not cleared

and the regular display reappears.

Page 72

Muting the Buzzer

4.9 Muting the Buzzer

The buzzer sound can be disabled. Note, however, that the buzzer cannot be muted in the following cases. Continuity check, diode test, and overload warning (only for the maximum value)

Turn on the power while pressing

When is released, the regular display appears ( goes off).

Canceling the buzzer mute function

Turn on the power again while pressing

When is released, the regular display appears ( lights up).

Even after the power is turned off, the buzzer setting is retained.

4.10 Turning On the Backlight

The backlight can be turned on/off by pressing .

When PC communication is started, the backlight is turned off forcibly.

Enabling/disabling the automatic deactivation of the backlight

Turn on the power while pressing .

Even after the power is turned off, the automatic backlight deactivation setting is retained.

Automatic deactivation

Enable

Disable

• When the automatic deactivation setting is enabled (on), the backlight goes off automatically, approximately 40 seconds after the backlight comes on.

• When the automatic deactivation setting is cancelled (oFF) and the auto power save function is disabled, if the instrument has not been operated for 3 minutes, the backlight automatically goes off.

Appx. Ind.

Page 73

Using the Auto Power Save (APS)

4.11 Using the Auto Power Save (APS)

The auto power save function saves on power consumption. If the instrument has not been operated for approx. 15 minutes, it enters the sleep mode. (When the instrument is in the sleep mode, press any key or turn the rotary switch to recover from the sleep mode.) When the sleep mode continues for approx. 45 minutes, the power turns off automatically. Before shipping (as one of the default settings), the auto power save function is set to enabled. ( It is also possible to disable the auto power save function. At 15 seconds before the power is turned off, the APS blinks and an intermittent buzzer sounds. To continuously use the instrument, press any key or turn the rotary switch.

After use, set the rotary switch to OFF. The auto power save function consumes a small amount of current.

Recovering from the power off state

Set the rotary switch to OFF and turn on the power again. (When the current measurement is used, disconnect the measurement cable and then turn on the power again.)

Disabling the auto power save function

Turn on the power while pressing

lights up)

When is released, the regular display appears. (APS goes off.)

This function is disabled until the power is turned off.

Page 74

Using Plus/Minus Judgment Function for Measurement Value

4.12 Using Plus/Minus Judgment Function for Measurement Value

If the measured DC voltage falls below the following standard value, a buzzer sounds and the backlight lights up red. This function is useful for checking for any incorrect connection of the DC power.

Standard value: -10 V or less Measurement function: DCV

“Enabling/disabling the Plus/Minus judgment function” (p. 78)

Appx. Ind.

Page 75

Communicating with PC

4.13 Communicating with PC

Using the optional DT4900-01 Communication Package, it is possible to transmit data to the PC or to control the instrument. For details, see the Instruction Manual which accompanies the communication package.

Install the special software on the PC.

(See the Instruction Manual which accompanies with the communication package.) Dedicated Software (p.Appx.4)

Attaching the USB cable to the instrument (p. 73)

Connect to the PC.

The virtual COM ports of the PC can be used as the USB interface.

• Communication method: Start-stop system, half-duplex transmission

• Baud rate: 19,200 bps ﬁ xed • Parity: None

• Data bit length: 8 bits • Flow control: None

• Stop bit: 1 bit • Delimiter: CR+LF

Transmits data.

Controls the

instrument.

Page 76

Communicating with PC

4, 5

Attaching the communication adapter to the instrument

Using a Phillips

USB cable

Communication

adapter

Communication port

1, 2

4, 5

screwdriver, remove the screws (2 locations) from the battery cover.

Remove the battery

cover.

Attach the

communication adapter.

Reattach the battery

cover.

Secure the battery

cover with the screws.

Connect the

USB cable to the communication adapter.

• Connect the cables, being careful to orient each cable correctly.

• During communication, appears in the display.

• When is lit, the operation keys of the instrument is

disabled.

• During communication, do not disconnect the USB cable.

Disconnecting the cable stops the communication. In that case, a warning is displayed by the PC software. Connect the cable again.

• It is possible to use the instrument while the communication

adapter is attached, however, the communication adapter is excluded from the drop-proof.

Appx. Ind.

Page 77

Setting and Checking the System

4.14 Setting and Checking the System

Checking that all indicators are displayed

Check that there is no missing indicator. If any indicator is missing, stop using the instrument and send it for repair.

Turn on the power while pressing

When is released, the regular display appears.

Checking the software version of the instrument

For repair or calibration, check the version if necessary.

Example: Ver 1.00

Turn on the power while pressing

When is released, the regular display

appears.

Page 78

Setting and Checking the System

Changing the temperature display unit

The units of temperature (°C or °F) can be changed.

Turn on the power while pressing

and simultaneously.

Press for at least 3

(Display: tEMP)

The setting of the temperature unit is retained even after the power is turned off.

seconds.

Change the unit of the temperature

using

Press to determine the

setting.

After a few moments, the regular display reappears.

Appx. Ind.

Page 79

Resetting the System

4.15 Resetting the System

The system is returned to the state before shipping. The power-on option setting is also reset. The memory data are not reset. To clear the memory data, clear the data individually for each memory No. (p. 68) or clear all data (p. 68).

The temperature unit is not reset, either.

Turn on the power while pressing

and .

Within 3 seconds, press

again.

After [CLr] blinks, the system returns to the state before shipping. If the instrument is not operated for 3 seconds, the system is not reset but the regular display reappears.

Table of default settings

Filter function Disabled Relative function Disabled

Display update Normal

Display hold Disabled Range AUTO [ Auto hold Disabled Maximum/Minimum value Disabled Peak value Disabled Auto power save function Enabled [ Automatic backlight deactivation Off Buzzer Enabled [ % conversion 4-20 mA dBm standard impedance 600 Temperature display unit °C Plus/Minus Judgment Function

for Measurement Value

Setting item Default setting Display

] is lit.



Disabled

Page 80

Power-on Option Table

4.16 Power-on Option Table

The settings in the instrument can be changed or checked. After changing the setting, the regular display then reappears.

Canceling the auto power save function (APS)

Buzzer (ON/OFF)

Automatic backlight deactivation setting

Turn on the power while pressing the operation key.

(Turn the rotary switch from OFF.)

Setting change

Method Ref.

([APS] goes off.)

([ ] lights up/goes off.)

Automatic deactivation disabled: [oFF], [bL-A] Automatic deactivation enabled: [on], [bL-A]

p. 70

p. 69

Clearing all memory data

System reset

Standard impedance setting (dBm measurement)

Press this within

3 seconds.

Select the

desired setting.

Press this within

3 seconds.

Conﬁ rm the

change.

p. 68

p. 76

p. 41

Appx. Ind.

Page 81

Power-on Option Table

Setting change

Switching to 4-20 mA/ 0-20 mA

Displaying all indicators

Checking the version

Switching the temperature unit

Displaying the serial number

Enabling/ disabling the Plus/Minus judgment function

Method Ref.

Select the

desired setting.

Select the

desired setting.

When is released, the regular display appears.

Conﬁ rm the

change.

Serial No. display (9 digits) 1st to 4th digits: Main display 5th to 9th digits: Sub display

Conﬁ rm the

change.

3 seconds

or more

p. 53

p. 74

p. 75

p.71

Page 82

Speciﬁ cations

5.1 Electrical Characteristics

AC measurement system

Noise suppression

Response time

True RMS measurement

• NMRR DCV, -60 dB or less (50 Hz/60 Hz)

• CMRR DCV, -120 dB or less

• CMRR ACV, -60 dB or less

• Power ON time: within 2 seconds

• DCV Within 1

• ACV Within 3

•

*1: Until the value comes in the range of the accuracy

*2: Until the displayed value stabilizes (within ±2

(DC/50 Hz/60 Hz, 1 k

(When the range does not move until the measured value is displayed in the screen)

*1 *2

second

seconds

Within 2



seconds

Within 2



seconds

speciﬁ cation

counts)

Within 1.5 seconds

Within 8 seconds

Within 3 seconds

unbalance)



unbalance)



(0 V  100 V auto range operation)

(Inﬁ nity  0  auto range operation)

(0   30 M auto range operation)

Appx. Ind.

Page 83

Electrical Characteristics

Display update rate

• V, Continuity, Frequency, A, dBm, dBV: 5 times/s

• Electrostatic capacity

nS, Diodo, Clamp,



,

0.05 to 5 times/s (varies depending on the measured value)

• Temperature 1 time/s (including disconnection

check)

• Peak measurement Up to 155 times/s when peak

value is updated

• DC+ACV 2.5 times/s

Input impedance See “Accuracy Table” (p. 81).

Overload protection

Function Overload protection

• ACV, dBm, dBV, Hz, AC clamp (DT4281)

• DCV

• DC+ACV, Hz

• Continuity check, diode test

, temperature (K)

•



• Electrostatic capacity

• nS (DT4282)

1100 V DC/AC (50/60 Hz) or 2 × 10 whichever is the lower value

• Voltage applied for 1 minute

• Transient overvoltage 8000 V

1000 V DC/AC or 2 × 10 the lower value

• Voltage applied for 1 minute

• Current steady state under overload 15 mA or less

• Current transient state under overload 0.8 A or less

•DCA, ACA, DCmA, ACmA, (4-20mA)%, Hz

• DCA (DT4282), ACA (DT4282), Hz

630 mA/1000 V fuse Breaking capacity 50 kA AC/30 kA DC

11 A/1000 V fuse Breaking capacity 50 kA AC/30 kA DC

V • Hz,

V • Hz, whichever is

Page 84

5.2 Accuracy Table

Accuracy Table

Guaranteed accuracy period 1 year

Regulated power supply range Until the power shutdown (3.8 V ± 0.2 V)

Temperature and humidity for guaranteed accuracy

Temperature characteristic Adds “Measurement accuracy × 0.1/°C”

Comply with the temperature characteristic in the applicable accuracy table if individually speciﬁ ed. Other conditions: For information related to the L4931 extension cable set (coupled 2 cables, 3 m), see the accuracy table.

• rdg. (reading or displayed value): The value currently being measured and displayed on the measuring instrument.

• dgt. (resolution): The smallest displayable unit, i.e., the input value that causes the digital display to show a “1”.

AC voltage (V AC, mV AC)

Range

60.000 mV

600.00 mV

6.0000 V

60.000 V

600.00 V

1000.0 V

20 to

below 45

[Hz]

±1.3% rdg. ±60 dgt.

±1% rdg. ±60 dgt.

Not speciﬁ ed

45 to 65

[Hz]

±0.4% rdg. ±40 dgt.

±0.2% rdg. ±25 dgt.

23°C ± 5°C (73°F ± 9°F), 80%RH or less (non-condensating)

(except 23°C ± 5°C (73°F ± 9°F))

Accuracy

Over 65

to 1 k

±0.6% rdg. ±40 dgt.

±0.3% rdg. ±25 dgt.

[Hz]

Over 1 k

to 10 k

[Hz]

±0.9% rdg. ±40 dgt.

±0.4% rdg. ±25 dgt.

Over 10 k

to 20 k

[Hz]

±1.5% rdg. ±40 dgt.

±0.7% rdg. ±40 dgt.

Not speciﬁ ed

Over 20 k

to 100 k

[Hz]

±20% rdg. ±80 dgt.

±8% rdg. ±80 dgt.

±3.5% rdg. ±40 dgt.

Not speciﬁ ed

Appx. Ind.

Page 85

Accuracy Table

Input impedance 1 M ±4%, 100 pF or less

Crest factor 3 or less

Accuracy speciﬁ cation range

DC superimposition • For the superimposition on 200 V DC or less, see

DC voltage (V DC, mV DC)

Range Accuracy Input impedance

60.000 mV ±0.2% rdg. ±25 dgt.

600.00 mV ±0.025% rdg. ±5 dgt.

6.0000 V ±0.025% rdg. ±2 dgt. 11.0M

60.000 V ±0.025% rdg. ±2 dgt. 10.3M ±2%: 100 pF or less

600.00 V ±0.03% rdg. ±2 dgt. 10.2M

1000.0 V ±0.03% rdg. ±2 dgt. 10.2M

*1: After leaving the instrument in an environment where the ambient air

temperature has been stable for at least 30 minutes, allow the input to short circuit and activate the relative value display function (REL). The accuracy is then speciﬁ ed. After activating the REL, the temperature ﬂ uctuates within ±5°C.

(For the 60.000 mV/ 600.00 mV/ 1000.0 V range, 1.5 or less for 100% of the input of the range 3 or less for 50% of the input of the range)

5% or more of each range (less than 5% of each range is outside of the guaranteed accuracy) With the ﬁ lter ON, the accuracy is speciﬁ ed in 100 Hz or less. Furthermore, 2% rdg. is added. Frequency range: 20 Hz to 100 kHz (A measured value outside of the accuracy guarantee range for frequency is also displayed.)

the accuracy table.

• For the superimposition on over 200 V DC to 500 V DC or less, 2% rdg. is added to the accuracy speciﬁ cation in 1 kHz or less.

• For the superimposition on over 500 V DC, 10% rdg. is added to the accuracy speciﬁ cation in 1 kHz or less.

1G or more: 100 pF or less

±2%: 100 pF or less



±2%: 100 pF or less



±2%: 100 pF or less



Page 86

DC+ACV measurement

Range

6.0000 V

60.000 V

600.00 V

1000.0 V

20 to

below 45

[Hz]

±1.2% rdg. ±65 dgt.

Not

speciﬁ ed

Not

speciﬁ ed

Not

speciﬁ ed

45 to 65

[Hz]

±0.3% rdg. ±30 dgt.

Accuracy

Over 65

to 1 k

[Hz]

±0.4% rdg. ±30 dgt.

Over 1 k

to 10 k

[Hz]

±0.4% rdg. ±30 dgt.

±0.4% rdg. ±45 dgt.

Accuracy Table

Over 10 k

to 20 k

[Hz]

±1.5% rdg. ±45 dgt.

Not

speciﬁ ed

Not

speciﬁ ed

Over 20 k

to 100 k

[Hz]

±3.5% rdg. ±125 dgt.

Not

speciﬁ ed

Not

speciﬁ ed

Input impedance 1 M ±4%, 100 pF or less

Crest factor 3 or less

Auto range The range moves depending on the DC+AC

Accuracy speciﬁ cation range

Accuracy of DCV (main display) and ACV (sub display) when SHIFT is pressed during DC+ACV measurement

DCV (main display): the accuracy of 45 Hz to 65 Hz in the accuracy

1. table is applied. Note however that 2%rdg. should be added when there is AC voltage superimposition less than 45 Hz.

2. ACV (sub display): according to the accuracy table

(For the 1000.0 V range, 1.5 or less for 100% of the input of the range, 3 or less for 50% of the input of the range)

calculation result.

5% or more of each range (less than 5% of each range is outside of the guaranteed accuracy) With the ﬁ lter ON, the accuracy is speciﬁ ed in 100 Hz or less. Furthermore, 2% rdg. is added. Frequency range: 20 Hz to 100 kHz (A measured values outside of the accuracy guarantee range for frequency is also displayed.)

Appx. Ind.

Page 87

Accuracy Table

Peak measurement

(At the time of ACV, DCV, DC+ACV, Clamp, DCA, DCmA, DCA, ACA, ACmA, ACA)

Main

measurement

DCV 4 ms or more (single) ±2.0% rdg. ±40 dgt.

Other than DCV

Signal width Accuracy

1 ms or more (repeated) ±2.0% rdg. ±100 dgt.

1 ms or more (single) ±2.0% rdg. ±40 dgt.

250 s or more (repeated) ±2.0% rdg. ±100 dgt.

*3, *4

*4, *5

*1: The accuracy is speciﬁ ed via the 5 V/4 ms single signal. *2: The accuracy is speciﬁ ed at the peak value of 40000 counts/25 Hz sine

wave. *3: The accuracy is speciﬁ ed via the 5 V/1 ms single signal. (ACV, DC+ACV) *4: The accuracy is speciﬁ ed at the peak value of the Max. counts/100 Hz

sine wave in the main measurement range. (AC measurement) *5: The accuracy is speciﬁ ed at the peak value of 40000 counts/100 Hz sine

wave in the main measurement range. (DC measurement, 7 A/100 Hz for

the 10 A range)

Maximum input range

Voltage measurement range

Peak measurement range

DCV ACV DC+ACV

6.0000 V 6.000 V 18.000 V 18.000 V

60.000 V 60.00 V 180.00 V 180.00 V

600.00 V 600.0 V 1500.0 V

1500.0 V

1000.0 V 1000 V None None

*1: Up to 1000 V for the RMS

Page 88

Accuracy Table

Current measurement range

600.00 A 1200.0 A

6000.0 A 12000 A

60.000 mA 120.00 mA

600.00 mA 1200.0 mA

6.0000 A (DT4282) 12.000 A

10.000 A (DT4282) 15.00 A

AC clamp measurement range (DT4281)

10.00 A 30.00 A

20.00 A 60.00 A

50.00 A 150.0 A

100.0 A 300.0 A

200.0 A 600.0 A

500.0 A 1500 A

1000 A 3000 A

Continuity check

Range Accuracy Measurement current

600.0

Open circuit voltage 2.5 V DC or less

Continuity threshold 20

Threshold setting tolerance ±1% setting±0.5

Response time Open circuit or short circuit is detected for at

±0.5% rdg. ±5 dgt. 640 A ±10%



Peak measurement range

DCA/ACA

Peak measurement range

(default) / 50 / 100 / 500



least 10 ms.

*2: Up to 600 mA for the

RMS

*3: Up to 10 A for the

RMS



Appx. Ind.

Page 89

Accuracy Table

Diode test

Range Accuracy Measurement current

3.600 V ±0.1% rdg. ±5 dgt. 1.2 mA or less

Open circuit voltage 4.5 V DC or less

If the reading is lower than the threshold during the forward connection, a buzzer sounds and red backlight comes on. When the reading exceeds the threshold by 0.01 V or more during the forward connection, the buzzer stops and the red backlight turns off.

Forward threshold

0.15 V/ 0.5 V (default)/ 1 V/ 1.5 V/ 2 V/ 2.5 V/ 3 V)

Threshold setting tolerance ±1% setting±0.005 V

Resistance (Ω)

Range Accuracy Measurement current

60.000

600.00

6.0000k

±0.3% rdg. ±20 dgt.



±0.03% rdg. ±10 dgt.



±0.03% rdg. ±2 dgt.



60.000k±0.03% rdg. ±2 dgt.

600.00k

6.0000M

60.00M

600.0M

±0.03% rdg. ±2 dgt. 0.96 A ±10%



±0.15% rdg. ±4 dgt. 96 nA ±10%



±1.5% rdg. ±10 dgt.



±3.0% rdg. ±20 dgt.



±8.0% rdg. ±20 dgt.

*2, *3

*2, *4

640 A ±10%

96 A ±10%

9.3 A ±10%

96 nA ±10%

640 A ±10%

*1: Allow the input to short circuit and activate the relative value display

function (REL). The accuracy is then speciﬁ ed. *2: The accuracy is speciﬁ ed for humidity 60%RH or less. *3: The accuracy is speciﬁ ed for 200.00 M *4: The accuracy is speciﬁ ed for more than 200.00 M

or less.



Open circuit voltage 2.5 V DC or less Maximum capacity load 100 mF Maximum inductive load 10 H

Page 90

Accuracy Table

Conductance (nS)

Range Accuracy Measurement current

600.00 nS ±1.5% rdg. ±10 dgt. 96 nA ±10%

• The accuracy is speciﬁ ed for humidity 60%RH or less.

• For more than 300 nS, ±20 dgt. is added.

• The accuracy is speciﬁ ed in 20.00 nS or more.

Open circuit voltage 2.5 V DC or less

Maximum capacity load 100 mF

Maximum inductive load 10 H

Electrostatic capacity

Range Accuracy

1.000 nF ±1% rdg. ±20 dgt.

10.00 nF ±1% rdg. ±5 dgt.

100.0 nF ±1% rdg. ±5 dgt.

1.000 F ±1% rdg. ±5 dgt. 32 A ±10% 2.5 V DC or less

10.00 F ±2% rdg. ±5 dgt.

100.0 F ±2% rdg. ±5 dgt.

1.000 mF ±2% rdg. ±5 dgt.

10.00 mF ±2% rdg. ±5 dgt. *3680 A ±20% 2.1 V DC or less

100.0 mF ±2% rdg. ±20 dgt.

*1: In the case of the 100 nF range or less, the accuracy is speciﬁ ed after the

REL function is activated. *2: The accuracy is speciﬁ ed in 0.22 nF or more. *3: Adds “Measurement accuracy × 0.3/°C” (except 23°C ± 5°C)

• When the manual range is set, the accuracy is speciﬁ ed in 1% or more of the range.

• The accuracy is speciﬁ ed for series resistance of 5

• Maximum count for each range: 1100 (excluding 100.0 mF)

Measurement

current

32 A ±10% 2.5 V DC or less

680 A ±20% 3.1 V DC or less

680 A ±20% 2.1 V DC or less

or less.



Open circuit

voltage

Appx. Ind.

Page 91

Accuracy Table

Temperature (type K thermocouple)

Range Accuracy

-40.0 to 800.0°C ±0.5% rdg. ±3°C

-40.0 to 1472.0°F

*1: In an environment where the temperature of the instrument is ±1°C and

stable, the accuracy is speciﬁ ed. *2: Using the power-on option setting, °F display is activated. Fahrenheit °F = (9/5) × Celsius°C + 32

• The optional type K thermocouple are used.

• The accuracy does not include the error of the type K thermocouple.

• Standard contact temperature compensation stability time When the instrument environmental temperature ﬂ uctuates ±5°C or more: 120 minutes After current measurement: 30 minutes

DC (DCμA, DCmA, DCA)

DCA

DCmA

DCA (DT4282)

*1: Accuracy rule when using the slow display update rate. Add ±20 dgt. when

using the normal rate.

±0.5% rdg. ±5.4°F

Range Accuracy Shunt

600.00 A ±0.05% rdg. ±5 dgt.*1101

6000.0 A ±0.05% rdg. ±5 dgt. 101

60.000 mA ±0.05% rdg. ±5 dgt.

600.00 mA ±0.15% rdg. ±5 dgt. 1

6.0000 A ±0.2% rdg. ±5 dgt.

10.000 A ±0.2% rdg. ±5 dgt. 10m

Fuse

resistance



Approx.

1.2



10m



0.1  or less



Page 92

Accuracy Table

AC (ACμA, ACmA, ACA)

[Hz]



Accuracy

Over 65

to 1 k

[Hz]

±0.6% rdg. ±20 dgt.

±0.6% rdg. ±5 dgt.

±0.6% rdg. ±20 dgt.

±0.6% rdg. ±5 dgt.

±0.8% rdg. ±20 dgt.

±0.8% rdg. ±5 dgt.

Approx. 1.2

Approx. 0.1

Over 1 k

to 10 k

[Hz]

±2% rdg. ±20 dgt.

±2% rdg. ±5 dgt.

±1% rdg. ±20 dgt.

±1.5% rdg. ±10 dgt.

Not speciﬁ ed



Over 10 k

to 20 k

[Hz]

±4% rdg. ±20 dgt.

±4% rdg. ±5 dgt.

±2% rdg. ±20 dgt.

Not speciﬁ ed

Range

[A]

600.00 

ACA

6000.0 

60.000 m

ACmA

600.00 m

6.0000

ACA

10.000

ACA 600.00 A 101

ACmA 60.000 mA 1

ACA

*1: The accuracy is speciﬁ ed in 5% or more of the range. (Less than 5% of each range is outside of the guaranteed accuracy.) *2: For more than 300 mA, the accuracy is speciﬁ ed in 5 kHz or less. *3: Only the DT4282 *4: The accuracy is speciﬁ ed in 2 A or more.

Crest factor 3 or less (Note that it applies to 1/2 of the range.)

20 to

below 45

[Hz]

±1.0% rdg. ±20 dgt.

±1.0% rdg. ±5 dgt.

±1.0% rdg. ±20 dgt.

±1.0% rdg. ±5 dgt.

Not speciﬁ ed

Not

speciﬁ ed

Range Shunt Fuse resistance

6.0000 mA 101

45 to 65

±0.6% rdg. ±20 dgt.

±0.6% rdg. ±5 dgt.

±0.6% rdg. ±20 dgt.

±0.6% rdg. ±5 dgt.

±0.8% rdg. ±20 dgt.

±0.8% rdg. ±5 dgt.



600.00 mA 1

6.0000 A 10 m

10.000 A 10 m



Appx. Ind.

Page 93

Accuracy Table

Accuracy guarantee range for frequency

AC clamp (DT4281)

The accuracy is speciﬁ ed in 15% or more of

Range

10.00 A ±0.6% rdg. ±2 dgt. ±0.9% rdg. ±2 dgt. 0.05

20.00 A ±0.6% rdg. ±4 dgt. ±0.9% rdg. ±4 dgt. 0.10

50.00 A ±0.6% rdg. ±10 dgt. ±0.9% rdg. ±10 dgt. 0.25

100.0 A ±0.6% rdg. ±2 dgt. ±0.9% rdg. ±2 dgt. 0.5

200.0 A ±0.6% rdg. ±4 dgt. ±0.9% rdg. ±4 dgt. 1.0

500.0 A ±0.6% rdg. ±10 dgt. ±0.9% rdg. ±10 dgt. 2.5

1000 A ±0.6% rdg. ±2 dgt. ±0.9% rdg. ±2 dgt. 5

• The optional 9010-50, 9018-50, or 9132-50 clamp-on probe is used.

• For accuracy in combination with the clamp, add the accuracy of the clampon probe.

Input impedance 1 M ±4%, 100 pF or less

Crest factor 3 or less

Accuracy guarantee range for frequency

the range. (Less than 15% of each range is outside of the guaranteed accuracy.)

20 Hz to 20 kHz (A measured value outside of the accuracy guarantee range for frequency is also displayed.)

Accuracy (only the instrument)

Conversion

rate

(A/mV)

40 to 65 [Hz] Over 65 to 1 k [Hz]

40 Hz to 1 kHz (A measured value outside of the accuracy guarantee range for frequency is also displayed.)

Page 94

Frequency (Hz)

(In the case of ACV, DC+ACV, ACA, ACmA, or ACA)

Range Accuracy

99.999 Hz ±0.005% rdg. ±3 dgt.

999.99 Hz ±0.005% rdg. ±3 dgt.

9.9999 kHz ±0.005% rdg. ±3 dgt.

99.999 kHz ±0.005% rdg. ±3 dgt.

500.00 kHz ±0.005% rdg. ±3 dgt.

Accuracy Table

*1: Measurement range where the accuracy is speciﬁ ed in the range of

99.999 kHz/500.00 kHz Up to 200 kHz for ACV or ACA Up to 50 kHz for DC+ACV Up to 100 kHz for the range from 60.000 mV AC to 600.00 mV AC Up to 30 kHz for ACmA or ACA

Measurement range

Pulse width 1 s or more (duty ratio: 50%)

• With the ﬁ lter ON, the accuracy is speciﬁ ed in 100 Hz or less.

• During DC+ACV measurement, it is in accordance with the attenuator range where the input component is large.

0.5 Hz or more ([-----] appears for less than 0.5 Hz.)

Appx. Ind.

Page 95

Accuracy Table

Minimum sensitivity voltage (During DC+ACV measurement, it indicates an RMS of the AC component.)

Range

[Hz]

99.999

*2,*3

999.99

9.9999 k

99.999 k

500.00 k

60.000 mV 600.00 mV 6.0000 V 60.000 V 600.00 V 1000.0 V

10.000 mV 100.00 mV 1.0000 V 10.000 V 100.00 V 100.0 V

10.000 mV 100.00 mV 1.0000 V 10.000 V Not

30.000 mV 150.00 mV 1.5000 V Not

AC voltage range (sine wave)

speciﬁ ed

Not speciﬁ ed

*2: The minimum sensitivity voltage which is less than 5 Hz is tripled. *3: With the ﬁ lter ON, the minimum sensitivity voltage is multiplied by 0.7.

Minimum sensitivity current

Range

[Hz]

99.999

999.99

9.9999 k

99.999 k

500.00 k

600.00 A 6000.0 A 60.000 mA 600.00 mA 6.0000 A 10.000 A

60.00 A600.0 A 6.000 mA 60.00 mA 0.6000 A 4.000 A

60.00 A600.0 A 6.000 mA*660.00 mA

100.00 A*51000.0 A

AC range (sine wave)

Not speciﬁ ed

Not

speciﬁ ed

Not speciﬁ ed

The maximum input is within each range.

*4: The minimum sensitivity current which is less than 5 Hz is tripled. *5: Speciﬁ ed in 200 kHz or less. *6: Speciﬁ ed in 30 kHz or less.

Page 96

Decibel conversion measurement

Function Range Standard

dBm 600.00 dBm W

dBV 60.00 dBV V

Conversion formula (as measured value V (V))

Accuracy: dBm (when standard impedance is 600Ω)

Measurement

Range [dBm]

-48 to

below -21

-21 to

below -1

-1 to below

17 to below 37Not

37 to below 57Not

57 to 62 Not

10logdBm

20logdBV

20 to

below 45

[Hz]

±0.8 dBm ±0.5 dBm ±0.5 dBm ±0.5 dBm ±0.6 dBm ±3.0 dBm

±0.3 dBm ±0.2 dBm ±0.2 dBm ±0.2 dBm ±0.3 dBm ±1.0 dBm

±0.3 dBm ±0.2 dBm ±0.2 dBm ±0.2 dBm ±0.2 dBm ±0.5 dBm

speciﬁ ed

= 1 m [W] 4/8/16/32/50/75/93/110/125/135/

ref

= 1 [V] None

ref

10log

45 to 65

±0.2 dBm ±0.2 dBm ±0.2 dBm ±0.2 dBm ±0.5 dBm

±0.2 dBm ±0.2 dBm ±0.2 dBm

¨ ©

[Hz]

§ ¨

¨ ©

V V

ref

Over 65

· ¸

¸ ¹

to 1 k

[Hz]

Standard impedance R

150/200/250/300/500/600 (default)/800/900 /1000/1200

1,000V

V20log

Over 1 k

to 10 k

[Hz]

· ¸

¸ ¹

Over 10 k

to 20 k

[Hz]

Not speciﬁ ed

Accuracy Table



Over 20 k

to 100 k

[Hz]

Not speciﬁ ed

Appx. Ind.

Page 97

Accuracy Table

Accuracy: dBV

Measurement

Range

[dBV]

-50 to

below -24

-24 to

below -4

-4 to below

15 to below 35Not

35 to below 55Not

55 to 60 Not

Range Conversion formula Accuracy

4-20 mA

350.00%

0-20 mA

300.00%

60.000 mA DC range ﬁ xed

20 to

below 45

±0.8 dBV ±0.5 dBV ±0.5 dBV ±0.5 dBV ±0.6 dBV ±3.0 dBV

±0.3 dBV ±0.2 dBV ±0.2 dBV ±0.2 dBV ±0.3 dBV ±1.0 dBV

±0.3 dBV ±0.2 dBV ±0.2 dBV ±0.2 dBV ±0.2 dBV ±0.5 dBV

speciﬁ ed

45 to 65

[Hz]

±0.2 dBV ±0.2 dBV ±0.2 dBV ±0.2 dBV ±0.5 dBV

±0.2 dBV ±0.2 dBV ±0.2 dBV

[Hz]

Over 65

to 1 k

[Hz]

Over 1 k

to 10 k

[Hz]

Over 10 k

to 20 k

[Hz]

Not speciﬁ ed

4-20 mA% conversion measurement

Measured value [mA] - 4 [mA]

16 [mA]

Measured value [mA]

20 [mA]

× 100

±0.1%rdg. ±20 dgt.

Over 20 k

to 100 k

[Hz]

Not speciﬁ ed

Page 98

5.3 General Speciﬁ cations

General Speciﬁ cations

Product

warranty period

Guaranteed accuracy period

Operating temperature

Operating humidity Up to 40°C (104°F):

Storage temperature and humidity

Operating environment

Drop-proof distance

3 years

1 year

-15°C to 55°C (5F° to 131°F)

at 80%RH or less (non-condensating) 40°C to 45°C (104°F to 113°F): at 60%RH or less (non-condensating) 45°C to 55°C (113°F to 131°F): at 50%RH or less (non-condensating)

-30°C to 60°C (-22°F to 140°F), at 80%RH or less (non-condensating)

Indoors, pollution degree 2, altitude up to 2000 m (6562 ft.)

1 m on concrete

Appx. Ind.

Page 99

General Speciﬁ cations

Power supply

Batteries AA size alkaline (LR6) battery or AA size manganese

Rated power supply voltage

Maximum rated power supply voltage

Maximum rated power

Rated power 0.2 VA (typ) supply voltage 6.0 V, DCV measurement,

Power during OFF/ APS

Continuous operating time

(Representative value: DCV function)

(Using new battery)

Dielectric strength

Maximum rated voltage between terminals

Maximum rated current between terminals

Maximum rated voltage between measurement terminals and ground

(R6) battery x 4

1.5 V DC × 4

6.8 V

0.5 VA (max) supply voltage 6.0 V, Continuity measurement, Input short circuit, Backlight on

Input short circuit, Backlight off

0.1 mVA (max) supply voltage 6.0 V

AA size

battery

Alkaline Approx. 100 hours Approx. 30 hours

Manganese Approx. 30 hours Approx. 10 hours

Between all measurement terminals and case: 8.54 kV AC (sine wave, 50 Hz/60 Hz, 60 seconds)

Between the V and COM terminals: 1000 V DC/AC

or 2 × 10

Between the A/mA and COM terminals: 600 mA DC/600 mA AC Between the A and COM terminals: 10 A DC/10 A AC (continuous)

1000 V (Measurement category III) 600 V (Measurement category IV) Anticipated transient overvoltage: 8000 V

V • Hz (whichever is the lower value.)

Backlight

off on

Page 100

General Speciﬁ cations

Dimensions Approx. 93W × 197H × 53D mm

Mass Approx. 650 g (22.9 oz.) (including batteries)

Applicable standards

Accessories • L9207-10 Test Lead

Replacement parts • A/mA terminal fuse (DT4281, DT4282)

Options See “Options (sold separately)” (p. 2).

(3.66W × 7.76H × 2.09D) (excluding the projection)

• Safety: EN61010

• EMC: EN61326

• Dustproof and waterproof: IP40 (EN60529)

IMPORTANT

To avoid any failure, do not allow the instrument to get wet. If the instrument gets wet, have your authorized Hioki distributor or reseller inspect or repair it, if necessary.

• Instruction Manual

• LR6 alkaline battery × 4 (unloaded)

Manufacturer HOLLYLAND Rating 630 mA/1000 V Breaking characteristics Breaking capacity 50 kA AC/ 30 kA DC Size Resistance Approx. 1.2 Printed color Blue

• A terminal fuse (DT4282 only) Manufacturer HOLLYLAND Rating 11 A/1000 V Breaking characteristics Breaking capacity 50 kA AC/ 30 kA DC Size Resistance 0.1 Printed color Red

Fast-blow type

10.3 mm × 38 mm



Fast-blow type

10.3 mm × 38 mm



or less



Appx. Ind.