Hioki DT4281, DT4282 Instruction Manual

DT4281 DT4282

DIGITAL MULTIMETER

Instruction Manual

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

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.

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

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.

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

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.

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

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.

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.

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.

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.

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.

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.

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.

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

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.

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)

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.

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.

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

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.

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

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.

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.

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.

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)

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)

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.

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.

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.

+ 83 hidden pages

Hioki DT4281, DT4282 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual