Hioki DT4281 Instruction Manual
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Hioki DT4281 Instruction Manual

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DT4281
DT4282

DIGITAL MULTIMETER

Apr. 2015 Revised edition 6
DT4281A981-06 15-04H
Instruction Manual
EN

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Summary of Contents for Hioki DT4281

  • Page 1: Digital Multimeter

    DT4281 DT4282 DIGITAL MULTIMETER Instruction Manual Apr. 2015 Revised edition 6 DT4281A981-06 15-04H...

  • Page 2: Table Of Contents

    Contents Introduction .................1 Verifying Package Contents ..........1 Options (sold separately) ..........2 Safety Notes ................5 Usage Notes ..............10 Overview Overview and Features .........15 Parts Names and Functions ......16 Display ............21 Alarm Display and Battery Indicator ...23 Preparation for Measurements Measurement Workfl ow ........25 Inserting/Replacing Batteries ......26 Using Test Leads ...........28 Installation in Measurement Location ..31...
  • Page 3 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 Using Instrument Conveniently Selecting the Measurement Range ....55 Measuring with the auto range ......... 55 Measuring with the manual range ......
  • Page 4 Contents 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 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...
  • Page 5 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...

  • Page 6: Introduction

    Introduction 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.

  • Page 7: Options (Sold Separately)

    Options (sold separately) 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...

  • Page 8: Temperature Measurement

    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 Rated Diameter of the measurable Clamp-on probe current conductor 46 mm or less 9010-50, 9018-50 500 A rms 55 mm or less, 80 × 20 mm bus-bar...
  • 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.

  • Page 10: Safety Notes

    Safety Notes Safety Notes This instrument is designed to conform to IEC 61010 Safety Standards, and has been thoroughly tested for safety prior to shipment. However, using the instrument in a way not described in this manual may negate the provided safety features. Before using the instrument, be certain to carefully read the following safety notes.
  • Page 11 Safety Notes Notation In this manual, the risk seriousness and the hazard levels are classifi ed as follows. Indicates an imminently hazardous situation that will DANGER result in death or serious injury to the operator. Indicates a potentially hazardous situation that may WARNING result in death or serious injury to the operator.
  • Page 12 Safety Notes 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. Indicates a double-insulated device. Indicates a fuse.
  • Page 13 Safety Notes Screen display This instrument uses the following screen displays. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 1 2 3 4 5 6 7 8 9 0 A different display is used in the case below.
  • Page 14 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.

  • Page 15: Usage Notes

    • 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.
  • Page 16 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 •...
  • Page 17 • 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)
  • Page 18 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.

  • Page 19: Overview

    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 Useful functions during • Speedy display of the RMS measured value measurement • Environmental performance (can be used •...

  • Page 20: Parts Names And Functions

    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.  1 9) DT4281 DT4282...
  • Page 21 Parts Names and Functions Operation keys Pressing a key for at least 1 second activates the function indicated above the key. To disable the function, change the rotary switch setting. • Displays the maximum or minimum value. (p. 61) • activates the relative value display function.
  • Page 22 DT4282 DT4281 is used to change to the measurement shown in blue. ( DT4281 : DT4281 only, DT4282 : DT4282 only) Turns off the power to the instrument. AC voltage measurement (p. 38) → dBm measurement → dBV measurement (p. 41) → DT4281 Clamp current measurement (p.
  • Page 23 Used for voltage measurement, resistance measurement, continuity check, diode test, temperature measurement, clamp current measurement DT4281 , or conductance DT4282 . Hereafter 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.
  • Page 24 Parts Names and Functions Rear 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.

  • Page 25: Display

    Display 1.3 Display For error displays, see “6.3 Error Display” (p. 105). Memory No. Main display Sub display Blinks if the maximum value in each range is exceeded. (Voltage, current, continuity, diode, resistance, temperature, electrostatic capacity, conductance) Holds measured value. (p. 57) The auto hold function is activated.
  • Page 26 During the temperature measurement, the temperature difference from the standard is displayed. (p. 45) Continuity check (p. 42) Diode test (p. 43) DT4281 Clamp current measurement (p. 51) % conversion measurement of 4-20 mA (0-20 mA) (p. 53) : DT4281 only, : DT4282 only)

  • Page 27: Alarm Display And Battery Indicator

    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.
  • 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.

  • Page 29: Preparation For Measurements

    Preparation for Measurements 2.1 Measurement Workfl ow Before using the instrument, be sure to read “Usage Notes” (p. 10). Installation and connection As necessary, have other Insert the batteries. (p. 26) optional items available and ready. Perform the startup check. (p.  3 3) Measurement Turn on the power and select the measurement function.

  • Page 30: Inserting/Replacing Batteries

    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.
  • 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.

  • Page 32: Using Test Leads

    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 •...
  • Page 33 Using Test Leads L9207-10 Test lead Sleeves Barriers Black Plugs Metal pins Cables The plugs of the test leads are covered with the safety caps. Before use, remove the caps. Safety cap Metal pin Connect to the object to be measured. 4 mm or less (sleeve attached) 19 mm or less (sleeve removed) Diameter ...
  • Page 34 Using Test Leads Removing and attaching the sleeves Removing the sleeves Attaching the sleeves Gently hold the bottom of the Insert the metal pins of the test sleeves and pull the sleeves off. leads into the holes of the sleeves, Safely store the removed sleeves and fi...

  • Page 35: Installation In Measurement Location

    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.
  • 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 •...

  • Page 37: Performing Measurements

    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...

  • Page 38: Operation Check

    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...
  • 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: Normal: Perform the AC voltage An already-known value appears. measurement to measure the (In this example, the commercial commercial power supply, and then...
  • Page 40 Inspection Before Use Before measurements WARNING 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. •...
  • 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.

  • Page 42: Measuring Voltage

    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 If the instrument is used in locations where the rating...

  • Page 43: Measuring Dc Voltage

    Measuring Voltage Measuring DC voltage Measure the DC voltage. Black Measuring synthesized voltage of DC and AC Measure the synthesized voltage of Black DC and AC. The measured value is a true RMS. (p. Appx.1) It is also possible to check the AC or DC components individually. (p. 40)

  • Page 44: Measuring Voltage Of Dc And Ac Components

    Measuring Frequencies Measuring voltage of DC and AC components component Synthesized voltage component Voltage of the DC Black 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.

  • Page 45: Decibel Conversion (Dbm/Dbv)

    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). For the voltage measurement, the “power ratio” for power 1 mW by the standard resistance is decibel-converted and then displayed.

  • Page 46: Checking Continuity

    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. Resistance Threshold Black...

  • Page 47: Measuring Diode

    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.

  • Page 48: Measuring Resistance

    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.

  • Page 49: Measuring Temperatures

    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 Checking the temperature change Check the following values.
  • 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.

  • Page 51: Measuring Electrostatic Capacities

    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 •...

  • Page 52: Measuring Conductances (Dt4282)

    Measuring Conductances (DT4282) 3.10 Measuring Conductances (DT4282) The resistance is measured and the inverse number is displayed (Unit: nS, nano-siemen). When the resistance is excessively large, it is used. Ω Ω Example: When the resistance is 50 M , 1/50 M = 20 nS.

  • Page 53: Measuring Current

    → Selected to measure 10 A or less. → (DT4282) * The 0-20 mA input can be selected via the power-on option. (p. 77) When measuring an unknown current Set to the high range for the DT4281, for the DT4282).
  • Page 54 Measuring Current DT4281, DT4282 Control board Black 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. Ω The μA input impedance of this instrument is approx. 100...

  • Page 55: Measuring Ac Using Clamp-On Probe (Dt4281)

    Measuring AC Using Clamp-on Probe (DT4281) 3.12 Measuring AC Using Clamp-on Probe (DT4281) The current is measured using our optional clamp-on probe (9010- 50, 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.
  • 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...

  • Page 57: Ma (0-20 Ma) % Conversion

    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%.) •...

  • Page 58: Using Instrument Conveniently

    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.
  • 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 Ω Ω Ω Ω Ω Ω Ω , 600 , 6 k , 60 k , 600 k , 6 M...

  • Page 60: Retaining The Measured Value

    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.
  • 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.

  • Page 62: When The Measured Value Fluctuates (Slow)

    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. ...

  • Page 63: Removing The Harmonic Components Of The Inverter (Filter)

    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.

  • Page 64: Checking The Maximum/Minimum Value (Max/Min)

    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.

  • Page 65: Checking The Peak Value (V • Apeak)

    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.

  • Page 66: Checking The Relative Value/Performing Zero Adjustment

    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).
  • 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. Ω Measurement function V, A, , nS Condition of the test leads Short circuit Open...

  • Page 68: Using The Memory Function

    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).
  • Page 69 Using the Memory Function • If the memory No. for which the data have already been saved is selected, [ ] appears. • When is pressed, the data are overwritten. • When the value is saved with memory No. “400” displayed, a buzzer sounds and “FULL”...

  • Page 70: Reading The Memory Data (Read)

    Using the Memory Function Reading the memory data (READ) 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...

  • Page 71: Clearing The Memory Data (Clear)

    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.

  • Page 72: Muting The Buzzer

    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).

  • Page 73: Using The Auto Power Save (Aps)

    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.

  • Page 74: Using Plus/Minus Judgment Function For Measurement Value

    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.

  • Page 75: Communicating With Pc

    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. ...
  • Page 76 Communicating with PC Attaching the communication adapter to the instrument Using a Phillips USB cable screwdriver, remove the screws (2 locations) from the battery cover. Remove the battery Communication cover. adapter Attach the Communication communication port adapter. 1, 2 Reattach the battery cover.

  • Page 77: Setting And Checking The System

    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.

  • Page 78: Changing The Temperature Display Unit

    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 simultaneously. Press for at least 3 seconds. (Display: tEMP) Change the unit of the temperature using Press to determine the...

  • Page 79: Resetting The System

    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 The temperature unit is not reset, either.

  • Page 80: Power-On Option Table

    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. Turn on the power while pressing the operation key. (Turn the rotary switch from OFF.) Setting Method Ref.
  • Page 81 Power-on Option Table Setting Method Ref. change Switching to 4-20 mA/ p. 53 Select the Confi rm the 0-20 mA desired setting. change. Displaying all p. 74 indicators Checking the p. 74 version 3 seconds Switching the or more temperature p.

  • Page 82: Specifi Cations

    Specifi cations 5.1 Electrical Characteristics AC measurement True RMS measurement system Noise • NMRR DCV, -60 dB or less (50 Hz/60 Hz) suppression • CMRR DCV, -120 dB or less Ω (DC/50 Hz/60 Hz, 1 k unbalance) • CMRR ACV, -60 dB or less Ω...
  • Page 83 Function Overload protection • ACV, dBm, dBV, Hz, 1100 V DC/AC (50/60 Hz) or 2 × 10 V • Hz, AC clamp (DT4281) whichever is the lower value • DCV • Voltage applied for 1 minute • DC+ACV, Hz • Transient overvoltage 8000 V •...

  • Page 84: Accuracy Table

    Accuracy Table 5.2 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 23°C ± 5°C (73°F ± 9°F), 80%RH or less guaranteed accuracy (non-condensating) Temperature characteristic Adds “Measurement accuracy ×...
  • Page 85 Accuracy Table Ω Input impedance ±4%, 100 pF or less Crest factor 3 or less (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) Accuracy 5% or more of each range (less than 5% of each specifi...
  • Page 86 Accuracy Table DC+ACV measurement Accuracy 20 to Over 65 Over 1 k Over 10 k Over 20 k Range 45 to 65 below 45 to 1 k to 10 k to 20 k to 100 k [Hz] [Hz] [Hz] [Hz] [Hz] [Hz] ±1.2% rdg.
  • Page 87 Accuracy Table Peak measurement (At the time of ACV, DCV, DC+ACV, Clamp, DCμA, DCmA, DCA, ACμA, ACmA, ACA) Main Signal width Accuracy measurement 4 ms or more (single) ±2.0% rdg. ±40 dgt. 1 ms or more (repeated) ±2.0% rdg. ±100 dgt. *3, *4 Other than 1 ms or more (single)

  • Page 88: Continuity Check

    6.0000 A (DT4282) 12.000 A *3: Up to 10 A for the 10.000 A (DT4282) 15.00 A AC clamp measurement Peak measurement range 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...

  • Page 89: Diode Test

    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.
  • 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...
  • 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 ±0.5% rdg. ±5.4°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) ×...
  • Page 92 Accuracy Table AC (ACμA, ACmA, ACA) Accuracy Range 20 to Over 65 Over 1 k Over 10 k 45 to 65 below 45 to 1 k to 10 k to 20 k [Hz] [Hz] [Hz] [Hz] [Hz] ±1.0% rdg. ±0.6% rdg. ±0.6% rdg.
  • Page 93 20 Hz to 20 kHz range for frequency (A measured value outside of the accuracy guarantee range for frequency is also displayed.) AC clamp (DT4281) Accuracy (only the instrument) The accuracy is specifi ed in 15% or more of Conversion the range.
  • Page 94 Accuracy Table Frequency (Hz) (In the case of ACV, DC+ACV, ACμA, 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.
  • Page 95 Accuracy Table Minimum sensitivity voltage (During DC+ACV measurement, it indicates an RMS of the AC component.) AC voltage range (sine wave) Range [Hz] 60.000 mV 600.00 mV 6.0000 V 60.000 V 600.00 V 1000.0 V 99.999 10.000 mV 100.00 mV 1.0000 V 10.000 V 100.00 V 100.0 V...
  • Page 96 Accuracy Table Decibel conversion measurement Function Range Standard Standard impedance R 600.00 dBm = 1 m [W] 4/8/16/32/50/75/93/110/125/135/ 150/200/250/300/500/600 Ω (default)/800/900 /1000/1200 60.00 dBV = 1 [V] None Conversion formula (as measured value V (V)) 1,000 10log 10log 20log 20log Ω...
  • Page 97 Accuracy Table Accuracy: dBV Measurement 20 to Over 65 Over 1 k Over 10 k Over 20 k 45 to 65 Range below 45 to 1 k to 10 k to 20 k to 100 k [Hz] [Hz] [Hz] [Hz] [Hz] [Hz] [dBV]...

  • Page 98: General Specifi Cations

    General Specifi cations 5.3 General Specifi cations Product 3 years warranty period Guaranteed 1 year accuracy period Operating -15°C to 55°C (5F° to 131°F) temperature Operating humidity Up to 40°C (104°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)
  • Page 99 General Specifi cations Power supply Batteries AA size alkaline (LR6) battery or AA size manganese (R6) battery x 4 Rated power supply 1.5 V DC × 4 voltage Maximum rated 6.8 V power supply voltage Maximum rated 0.5 VA (max) supply voltage 6.0 V, Continuity power measurement, Input short circuit, Backlight on Rated power...
  • Page 100 Hioki distributor or reseller inspect or repair it, if necessary. Accessories • L9207-10 Test Lead • Instruction Manual • LR6 alkaline battery × 4 (unloaded) Replacement parts • μA/mA terminal fuse (DT4281, DT4282) Manufacturer HOLLYLAND Rating 630 mA/1000 V Breaking...

  • Page 101: Maintenance And Service

    Replacement parts and longevity The longevity of the instrument varies depending on the usage environment and frequency. Note that operation within the following period of time is not guaranteed. When replacing the part, contact your authorized Hioki distributor or reseller. Parts Longevity Backlight Approx.
  • Page 102 Repair, Inspection, and Cleaning Cleaning • To clean the instrument, wipe it gently with a soft cloth moistened with water or mild detergent. • Wipe the display gently with a soft, dry cloth. IMPORTANT Never use solvents such as benzene, alcohol, acetone, ether, ketones, thinners or gasoline, as they can deform and discolor the case.

  • Page 103: Troubleshooting

    • When a malfunction of the instrument is suspected, check the information in “Before sending the instrument for repair” and then, if necessary, contact your authorized Hioki distributor or reseller. • When sending the instrument for repair, remove the batteries and pack it carefully to prevent damage during transportation.
  • Page 104 Troubleshooting Symptom Check and/or remedy (Current Check that the fuse is not blown. measurement) Replace with a new fuse specifi ed by our company. (p. 106) The measured value does not appear. Check that the fuse holder is not deformed. When removing the fuse, the holder is deformed if excessive force is applied.
  • Page 105 Troubleshooting Symptom Check and/or remedy The display does The display does not stabilize due to the infl uence not stabilize and the of noise and/or input signals. value fl uctuates; it is Set the display update slower (press SLOW for diffi...
  • Page 106 Would like to perform Using the relative value display function, zero zero adjustment. adjustment can be performed. (p. 64) Would like to replace These are available at authorized Hioki distributors the fuse. or resellers. Would like to know how to obtain the fuse.

  • Page 107: Error Display

    Error Display 6.3 Error Display Error Description Solution display ROM error Err 001 Program When the error appears in the display, it is necessary to solve by the actions ROM error Err 002 below. Adjustment data • Replace with new batteries. (p.  2 6) EEPROM error •...

  • Page 108: Replacing Fuses

    1000 V less Size:  10.3 mm × 38 mm The fuses can be purchased via authorized Hioki distributors or resellers. When removing the fuse, do not apply excessive force on the fuse holder. If the fuse holder is deformed, the connection becomes...
  • Page 109 Replacing Fuses CAUTION When replacing the fuse, do not allow foreign matter to enter the instrument. It may cause a malfunction. Remove the test leads from the instrument. Set the rotary switch to OFF. Screws Using a Phillips Rear screwdriver, remove the screws (2 locations) from the battery cover.

  • Page 110: Appx. 1 Rms And Average

    Appendix Appx. 1 RMS and Average Difference between the RMS and Average When converting AC to RMS, 2 methods are available, “True RMS method (True RMS indication)” and “Average method (Average rectifying RMS indication)”. In the case of the sine wave where no skew is included, the same values are indicated in both methods.

  • Page 111: Appx. 2 Operation Example

    Operation Example Appx. 2 Operation Example Checking the noise of the DC voltage Measure the AC component voltage, DC component voltage, and peak value. EV quick charger 114.1V 85.9V 100V Synthesized components of AC and DC 100V DC component Black ±14.1V AC component DC component voltage...

  • Page 112: Appx. 3 Capacitor Capacity Measurement

    Capacitor Capacity Measurement Principle Appx. 3 Capacitor Capacity Measurement Principle The instrument measures the capacity using the CR self-excited oscillation method (triangle wave). R: Instrument internal circuit Varies with each range. C: Object to be measured Capacitor When the capacitor to be measured is connected, self-excited oscillation begins.

  • Page 113: Appx. 4 Dedicated Software

    Dedicated Software (DMM Communicator) (Example) Measurement of 100 μF electrolytic capacitor Measurement range Oscillation frequency Instrument displayed value 100 μF 101.9 μF 1.369 Hz 1 mF 50.797 Hz 0.090 mF Appx. 4 Dedicated Software (DMM Communicator) The PC application (DMM Communicator) can be used to send measurement data from the instrument to a computer or to confi...

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Dt4282

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