Hioki DT4221 Instruction Manual
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Hioki DT4221 Instruction Manual

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Instruction Manual
DT4221
DT4222

DIGITAL MULTIMETER

June 2014 Revised edition 1 DT4221A981-01 14-06H

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Summary of Contents for Hioki DT4221

  • Page 1: Digital Multimeter

    Instruction Manual DT4221 DT4222 DIGITAL MULTIMETER June 2014 Revised edition 1 DT4221A981-01 14-06H...

  • Page 3: Table Of Contents

    Performing Measurements Inspection Before Use ......27 Measuring Voltage........31 Measuring AC voltage .........31 Measuring DC voltage ........32 Measurement using the AC and DC automatic judgment (DT4221) ......32 Measuring Frequencies ......33 Checking Continuity ....... 34 Measuring Diode (DT4222) ..... 35...
  • Page 4 Contents Measuring Resistance (DT4222) .... 36 Measuring Electrostatic Capacities (DT4222) ........... 37 Checking the Electric Charge (DT4221) 38 Using Instrument Conveniently 39 Selecting the Measurement Range ..39 Measuring with the auto range ......39 Measuring with the manual range .......39 Retaining the Measured Value ....

  • Page 5: Introduction

    Introduction Introduction Thank you for purchasing the HIOKI DT4221, DT4222 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 6: 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 (p. 22) L4933 Contact Pin Set 33 V AC/70 V DC DT4911 L4934 Test Lead...

  • Page 7: 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 8 Safety Notes Notation In this manual, the risk seriousness and the hazard levels are classifi ed as follows. Indicates an imminently hazardous situation DANGER that will result in death or serious injury to the operator. Indicates a potentially hazardous situation WARNING that may result in death or serious injury to the operator.
  • Page 9 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 grounding terminal.
  • Page 10 Safety Notes 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 dgt.
  • Page 11 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...

  • Page 12: Usage Notes

    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.
  • Page 13 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 14 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 15: Overview

    Overview 1.1 Overview and Features This measuring instrument is a multi-function digital multimeter that ensures both safety and durability. Main features and functions • Speedy display of the RMS measured value • Environmental performance (can be used anywhere) (Operation temperature: -10 to 50°C) •...

  • Page 16: Parts Names And Functions

    Parts Names and Functions 1.2 Parts Names and Functions Front Some indications are different between the DT4221 and DT4222. DT4221 DT4222 Display (p. 16) Operation keys (p. 13) Rotary switch (p. 14)
  • Page 17 Parts Names and Functions Operation keys Pressed down Power-on Normal for at least 1 option (p. 46) second Sets the manual Cancels the manual All LCDs range/switches range. light up and the range. the software version is displayed. RANGE:AUTO / RANGE:MANUAL Manually sets/ Sets/cancels the Cancels the...
  • Page 18 Parts Names and Functions Rotary switches and measurement descriptions DT4221 DT4222 Function DT4221 DT4222 √ √ AC voltage measurement √ √ DC voltage measurement √ √ Frequency measurement √ DC/AC voltage measurement (Automatic judgment) Ω Input impedance 900k ±20% √...
  • Page 19 Parts Names and Functions Rear DT4221 Test lead holder The test lead can be held. 2 2 2 Strap hole The optional Z5004 Magnetic Strap can be attached. (p. 25) Battery cover When replacing the battery (p. 20), remove the cover.

  • Page 20: Display

    Diode (p. 35) Retention of the Auto range, manual range measured value (p. 39) (p. 40) Relative value *1: DT4221 display (p. 43) The fi lter function is activated. (p. 41) The auto power save function is activated.

  • Page 21: Alarm Display And Battery Indicator

    Alarm Display and Battery Indicator 1.4 Alarm Display and Battery Indicator When the measured value exceeds the maximum input range in each range Voltage measurement The measured value and OVER blink. Corrective action: When the input exceeds the maximum rating, immediately move the test leads away from the measurement object.
  • Page 22 Alarm Display and Battery Indicator...

  • Page 23: Preparation For Measurements

    Preparation for Measurements 2.1 Measurement Workfl ow Before using the instrument, be sure to read “Usage Notes” (p. 8). Installation and connection Insert the battery. (p. 20) As necessary, have other optional items available and ready. Perform the startup check. (p. 27) Measurement Turn on the power and select the measurement function.

  • Page 24: Inserting/Replacing The Battery

    Inserting/Replacing the Battery 2.2 Inserting/Replacing the Battery Before using the instrument, insert one LR03 alkaline battery. Before measurements, check that the battery level is suffi cient. When the battery charge is low, replace the battery. 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 25 Inserting/Replacing the Battery • The indicator appears when the battery charge diminishes. Replace the battery as soon as possible. The power may be turned off when the backlight lights up or a buzzer sounds. • After use, be sure to turn off the instrument. •...

  • Page 26: Using Test Leads

    Using Test Leads 2.3 Using Test Leads The DT4911 Test Leads supplied with the instrument are used for measurements. Depending on measurement locations, use our optional parts. For details on the optional items, see “Options (sold separately)” (p. 2). WARNING •...
  • Page 27 Using Test Leads DT4911 Test Lead Sleeves Barriers Plugs Cables Metal pins Metal pin Connect to the object to be measured. Approx. 3 mm (sleeve attached) Approx. 15 mm (sleeve removed) Sleeve Attach to the metal pins to prevent short circuit accidents. Barrier Represents the safe handling distance from the metal pins.
  • Page 28 Using Test Leads Connecting to the instrument CAUTION • When removing the test leads from the measurement terminals, hold the end of the plugs. • Do not pull the cables with excessive force, as they may be broken. Black When connecting the test leads to the instrument, push them as far as possible into the measurement terminals while holding the end of the plugs.

  • Page 29: Installation In Measurement Location

    Installation in Measurement Location 2.4 Installation in Measurement Location 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). DANGER Those with medical electronics such as pacemakers should not use the Z5004 Magnetic Strap.
  • Page 30 Installation in Measurement Location Strap holes Front Rear Magnet Attach it to the wall surface (with metal plate affi xed).

  • Page 31: Performing Measurements

    Before using the instrument 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. Appearance check of the instrument and test leads...

  • Page 32: Operation Check

    If the same phenomena persist even after the test leads are replaced, a malfunction may have occurred. Halt inspection and then For the DT4221 send the instrument for repair. (The position of the rotary switch varies depending on the model.)
  • Page 33 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...
  • Page 34 Inspection Before Use Check that the electrical charge detection function operates normally. (Only the DT4221) Check method Action Position the detector on a known Normal: power supply, such as a power outlet. A buzzer sounds. Abnormal: A buzzer does not sound and the display does not change.

  • Page 35: Measuring Voltage

    Measuring Voltage 3.2 Measuring Voltage AC/DC voltage measurement and measurement using the AC and DC automatic judgment (only the DT4221) can be performed. Before measurements 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.

  • Page 36: Measuring Dc Voltage

    Measuring DC voltage Measure the DC voltage. Measurement using the AC and DC automatic judgment (DT4221) The AC and DC are automatically judged and the voltage is measured. (The instrument does not measure both AC and DC at the same time)

  • Page 37: Measuring Frequencies

    Measuring Frequencies 3.3 Measuring Frequencies The frequency can be checked. The frequency display is autoranging. The AC voltage range can be changed by pressing the RANGE key. • If signals out of the range of frequency measurement are measured, “-----” appears. Be aware of it. •...

  • Page 38: Checking Continuity

    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. For the DT4221 (The position of the rotary switch varies depending on the model.) Detection...

  • Page 39: Measuring Diode (Dt4222)

    Measuring Diode (DT4222) 3.5 Measuring Diode (DT4222) The forward voltage of the diode is measured. If the forward voltage is within the range from 0.15 V to 1.5 V, it is indicated via a buzzer (intermittent buzzer sound). WARNING Before measuring, be sure to turn off the power to the measurement circuit.

  • Page 40: Measuring Resistance (Dt4222)

    Measuring Resistance (DT4222) 3.6 Measuring Resistance (DT4222) Resistance is measured. To measure the low resistance accurately, it is necessary to cancel the resistance of the test leads. Perform zero adjustment for the displayed value using the relative value display (relative function) in advance.

  • Page 41: Measuring Electrostatic Capacities (Dt4222)

    Measuring Electrostatic Capacities (DT4222) 3.7 Measuring Electrostatic Capacities (DT4222) 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.

  • Page 42: Checking The Electric Charge (Dt4221)

    Checking the Electric Charge (DT4221) 3.8 Checking the Electric Charge (DT4221) Whether a power line is energized can be checked easily. If the power line is energized, it is indicated via a buzzer and display. Use this function for coated power lines. The detection may not be made depending on the measurement conditions.

  • Page 43: 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 at the bottom of the display. • Auto range Sets the optimum range automatically in accordance with the actual measurement.

  • Page 44: Retaining The Measured Value

    Retaining the Measured Value 4.2 Retaining the Measured Value The measured value is retained. (The bar graph is updated.) To retain the measured value, press ([HOLD] lights up and the measurement value is retained.) To cancel the hold state, press it again. ([HOLD] goes off.)

  • Page 45: Reducing The Noise (Filter)

    Reducing the Noise (FILTER) 4.3 Reducing the Noise (FILTER) WARNING To avoid electric shock or other personal injury, select the appropriate passband setting when measuring the AC voltage. If an inappropriate frequency is selected, the measured value displayed will not be correct. The infl...
  • Page 46 Reducing the Noise (FILTER) Example of frequency property when a fi lter is used (AC voltage 600.0 V range, 100 V input) Measured value [V] Filter OFF Passband 500 [Hz] Passband 100 [Hz] 1000 10000 Frequency at 100 V input (Hz) Example: Power frequency on an aircraft or marine vessel is 400 Hz When voltage is 100 V...

  • Page 47: Checking The Relative Value/Performing Zero Adjustment

    Checking the Relative Value/Performing Zero Adjustment 4.4 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 test lead wiring resistance (continuity, resistance measurement) and the wiring capacity (capacitor measurement).

  • Page 48: Performing Zero Adjustment

    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 Condition of the test leads Short circuit Open Example 1: Resistance...

  • Page 49: Turning On The Backlight

    Turning On the Backlight 4.5 Turning On the Backlight The backlight can be turned on/off by pressing The backlight automatically turns off if the instrument is not operated for 40 seconds. The automatic backlight deactivation function can be disabled. (p. 46) 4.6 Using the Auto Power Save (APS) The auto power save function saves on battery consumption.

  • Page 50: Power-On Option Table

    Power-on Option Table 4.7 Power-on Option Table The settings in the instrument can be changed or checked. When the power is turned off, the settings are disabled. When the operation key is released after changing the setting, the regular display then reappears. Turn on the power while pressing the operation key.
  • Page 51 Power-on Option Table Setting Method change (First position from OFF) Checking the software Example: Ver 1.00 version (Second position from OFF) Check that there are no missing indicators. If any indicator is missing, stop using the instrument and send it for repair. Displaying all indicators...
  • Page 52 Power-on Option Table...

  • Page 53: Specifi Cations

    Specifi cations 5.1 General Specifi cations Power supply LR03 Alkaline battery × 1 Battery indicator 1.4 V or more • lights up. Less than 1.3 V to 1.4 V warning voltage • lights up. Less than 1.2 V to 1.3 V •...
  • Page 54 General Specifi cations Drop-proof 1 m on concrete (with the holster attached) distance Product 3 years (excluding the measurement accuracy) warranty period Accessories • DT4911 Test Lead • Holster (attached to the instrument, with a test lead holder) • Instruction Manual •...

  • Page 55: Electrical Characteristics

    Electrical Characteristics 5.2 Electrical Characteristics Noise • DCV: -60 dB or more (50 Hz/60 Hz) suppression NMRR Ω Noise • DCV: -100 dB or more (DC/50 Hz/60 Hz, 1k suppression unbalance) Ω • ACV: -60 dB or more (DC/50 Hz/60 Hz, 1k CMRR unbalance) Response time...
  • Page 56 Electrical Characteristics Rated power 1.5 V DC × 1 voltage LR03 Alkaline battery × 1 Maximum rated 220 mVA power Power voltage 1.5 V, continuity measurement input short-circuited, backlight lit Rated power • 36 mVA +20% or less Power voltage 1.5 V, DCV measurement, backlight off •...

  • Page 57: Accuracy Table

    Accuracy Table 5.3 Accuracy Table Accuracy warranty period 1 year Regulated power supply range Until the power shutdown (1.15 V ± 0.2 V) Accuracy guarantee for 23°C ± 5°C (73°F ± 9°F), 80%RH or temperature and humidity less (non-condensating) Temperature characteristic •...
  • Page 58 Accuracy Table • Accuracy guarantee range for frequency: 40 Hz to 1 kHz (Measured values outside the accuracy guarantee range for frequency are also displayed.) The accuracy is not specifi ed for strain waveforms outside the range of 40 Hz to 1 kHz. •...
  • Page 59 Accuracy Table DC voltage Range Accuracy Input impedance Ω 600.0 mV ±0.5% rdg. ±5 dgt. 11.2M ±2.0% Ω 6.000 V ±0.5% rdg. ±5 dgt. 11.2M ±2.0% Ω 60.00 V ±0.5% rdg. ±5 dgt. 10.3M ±2.0% Ω 600.0 V ±0.5% rdg. ±5 dgt. 10.2M ±1.5% •...
  • Page 60 Accuracy Table Continuity Range Accuracy Measurement current Ω 200 μA ±20% 600.0 ±1.0% rdg. ±5 dgt. • Open circuit voltage: 1.8 V DC or less • Overload protection: 600 V DC/600 V AC or 3 × 10 V • Hz (energized for 1 minute) Current under overload: Steady state 15 mA or less, transient state 0.8 A or less...
  • Page 61 Accuracy Table Electrostatic capacity Range Accuracy Charging current 1.000 μF 10 n/100 n/1 μA ±20% ±1.9% rdg. ±5 dgt. 10.00 μF 100 n/1 μ/10 μA ±20% ±1.9% rdg. ±5 dgt. 100.0 μF 1 μ/10 μ/100 μA ±20% ±1.9% rdg. ±5 dgt. 10 μ/100 μ/200 μA ±20% 1.000 mF ±1.9% rdg.
  • Page 62 Accuracy Table Electric charge Detection voltage range Detection target frequency 80 V AC to 600 V AC 50/60 Hz • During voltage detection, a continuous buzzer sounds. *1: In contact with the insulated wire that is equivalent to IV2 mm...

  • Page 63: Maintenance And Service

    Maintenance and Service 6.1 Repair, Inspection, and Cleaning DANGER Customers are not allowed to modify, disassemble, or repair the instrument. Doing so may cause fi re, electric shock, or injury. Calibrations IMPORTANT Periodic calibration is necessary in order to ensure that the instrument provides correct measurement results of the specifi...

  • Page 64: 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 battery and pack it carefully to prevent damage during transportation.
  • Page 65 Troubleshooting Symptom Check and/or corrective action The display does Check that the input signal is within the input not stabilize and the range for the instrument. value fl uctuates; it is If there is any infl uence from noise, use the diffi...

  • Page 66: Error Display

    Program When the error appears in ROM error Err 2 the display, it is necessary to Adjustment data repair the instrument. EEPROM error Contact your authorized Err 4 Memory data Hioki distributor or reseller. ADC error Err 5 Hardware malfunction...

  • Page 67: 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 68 RMS and Average Appx.
  • Page 69 13-09...

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