Hanging the instrument with the strap ....29 Performing Measurements Inspection Before Use ......31 Measuring Voltage........35 Measuring AC voltage .........35 Measuring DC voltage ........36 Measurement using the AC/DC automatic judgment (DT4221, DT4223) ......36 Measuring Frequencies ......37 DT4221A981-03 HIOKI DT4221A981-03...
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Contents Checking Continuity ....... 38 Measuring Diode (DT4222, DT4224) ..39 Measuring Resistance (DT4222, DT4223, DT4224) ..... 40 Measuring Capacitance (DT4222, DT4224) ........41 Checking the Electric Charge (DT4221, DT4223) ........42 Using Instrument Conveniently 43 Selecting the Measurement Range ..43 Measuring with the auto range ......43...
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Contents Maintenance and Service Repair, Inspection, and Cleaning ... 67 Troubleshooting ........68 Error Display ..........70 Appendix Appx.1 Appx. 1 RMS and Average ....... Appx.1 HIOKI DT4221A981-03...
Introduction Introduction Thank you for purchasing the Hioki DT4221, DT4222, DT4223, DT4224 Digital Multimeter. To obtain maximum performance from the product, please read this manual first, and keep it handy for future reference. Verifying Package Contents 9243 When you receive the instrument, inspect it carefully to ensure that no damage occurred during shipping.
9243 graber The options listed below are available for the instrument. To order an option, please contact your authorized Hioki distributor L4931renketu or reseller. Options are subject to change. Please check Hioki’s DM4910 熱電対 website for the latest information. L4931 延長ケーブル...
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. HIOKI DT4221A981-03...
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Indicates a strong magnetic-field 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. HIOKI DT4221A981-03...
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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 HIOKI DT4221A981-03...
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The value currently being measured and indicated on the measuring instrument. (Resolution) The smallest displayable unit on a digital measuring dgt. instrument, i.e., the input value that causes the digital display to show a “1” as the least significant digit. HIOKI DT4221A981-03...
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(distribution panel) Distribution panel Service entrance Service drop Internal wiring CAT II CAT III CAT IV Outlet Power meter Fixed installation See: “2.3 Using Test Leads” (p. 26) HIOKI DT4221A981-03...
• Before using the instrument the first time, verify that it operates normally to ensure that no damage occurred during storage or shipping. If you find any damage, contact your authorized Hioki distributor or reseller. HIOKI DT4221A981-03...
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• Exposed to a strong electromagnetic field 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 HIOKI DT4221A981-03...
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• 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. HIOKI DT4221A981-03...
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Seeing “Measurement current” and “Open circuit voltage” in the accuracy table (p. 61), check, in advance, that there are no adverse effects of the measurement current and the open circuit voltage. HIOKI DT4221A981-03...
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Usage Notes 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.
• This safe design keeps circuit breakers from tripping and sparks from being produced at the tips of test leads. • Although the DT4221 and DT4222 will not break if they are used to measure voltage in continuity, resistance, capacitance, or diode range, those models do not provide functionality to limit the amount of current flowing to the instrument in the event of such measurement to 1.5 mA...
Parts Names and Functions 1.2 Parts Names and Functions Front Some indications are different among the models. Display (p. 20) Operation keys (p. 16) Rotary switch (p. 18) DT4224 DT4221 DT4222 DT4223 HIOKI DT4221A981-03...
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Parts Names and Functions Operation keys DT4221, DT4222 Pressed down Power- Normal for at least 1 on option second (p. 54) Sets the manual Cancels the manual All LCDs range/switches range. light up and the range. the software version is RANGE:AUTO / RANGE:MANUAL displayed.
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(APS). displayed value. the displayed value. APS goes off. lights up. blinks. Turns on/off the Switches/cancels Turns off the backlight. the low pass filter automatic and passband backlight settings. deactivation. HIOKI DT4221A981-03...
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Parts Names and Functions Rotary switches and measurement descriptions DT4221 DT4222, DT4224 DT4223 Function √ √ √ AC voltage measurement √ √ √ DC voltage measurement √ √ √ Frequency measurement DC/AC voltage measurement √ − √ (Automatic judgment) √...
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Do not remove this label as the number is important. Measurement terminals (See p. 28) The red test lead is connected. Hereafter referred to as “V terminal”. The black test lead is connected. Hereafter referred to as “COM terminal”. HIOKI DT4221A981-03...
Diode (p. 39) Retention of the Auto range, manual range measured value (p. 43) (p. 45) Relative value *1: DT4221 display (p. 50) *2: DT4223, DT4224 The filter function is activated. (p. 48) HIOKI DT4221A981-03...
• Protective circuitry operates in the event of erroneous voltage input to limit the amount of current flowing to the instrument to 1.5 mA or less. DT4222 • This safe design keeps circuit breakers from tripping and DT4222 sparks from being produced at the tips of test leads.
(Blinks) The battery is exhausted. Replace the battery. The charge is only a reference for the continuous operation time. Power shutdown [bAtt] When there is no charge, appears in the display for 3 seconds and the power is shut down. 1.4 電源遮断 HIOKI DT4221A981-03...
(As necessary) Hold the measured value. (p. 45) 1 の1 3.1 の 2, 3.2 交電 2.1, 3.2 直流電圧 End of the measurement Move the test leads away from the measurement object and then turn off the power. HIOKI DT4221A981-03...
• Do not allow the used battery to remain in the instrument. • To avoid corrosion from battery leakage and/or damage to the instrument, remove the battery from the instrument if it is to be kept in storage for an extended period. HIOKI DT4221A981-03...
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DT4221 Remove the battery cover. Remove the old battery. Insert one new battery (LR03), being careful of the battery polarity. Reattach the battery cover. Secure the cover with the screw. HIOKI DT4221A981-03...
(M3×7.5 mm) for securing the battery cover in place that are originally installed. If you have lost a screw or find that a screw is damaged, please contact your Hioki distributor for replacement. 2.3 Using Test Leads The DT4911 Test Leads supplied with the instrument are used for measurements.
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Hold the bottom of the sleeves and Insert the metal pins of the test pull the sleeves off. leads into the holes of the sleeves, Safely store the removed sleeves and firmly push them all the way in. so as not to lose them. HIOKI DT4221A981-03...
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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. COM terminal Connect the black test lead. V terminal Connect the red test lead. HIOKI DT4221A981-03...
Doing so may corrupt and may render them unusable. Furthermore, if the Z5004, Z5020 is brought near precision electronic equipment such as PCs, TV screens, or electronic wrist watches, they may fail. HIOKI DT4221A981-03...
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Installation in Measurement Location Example: Z5004 Strap holes Front Rear Magnet Attach it to the wall surface (with metal plate affixed). HIOKI DT4221A981-03...
Before using the instrument the first time, verify that it operates normally to ensure that no damage occurred during storage or shipping. If you find any damage, contact your authorized Hioki distributor or reseller. Appearance check of the instrument and test leads...
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Halt inspection and then For the DT4221 send the instrument for repair. (The position of the rotary switch 3.1 の1 3.1 の 2, 3.2 交電 varies depending on the model.) HIOKI DT4221A981-03...
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Abnormal: The measured value does not appear. A malfunction may have occurred. Stop the inspection and do not use the instrument. 3.1 の 2, 3.2 交電 2.1, 3.2 直流電 DT4221 HIOKI DT4221A981-03...
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To check the electric charge properly, do not use the instrument with test leads wrapped around the instrument. The detection sensitivity of electric charge detection deteriorates. DT4221 DT4222 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.
To change the range arbitrarily, use the manual range. (p. 44) Measuring AC voltage Measure the AC voltage. The measured value is a true RMS. (p. Appx.1) HIOKI DT4221A981-03 3.1 の 2, 3.2 交電 2.1, 3.2 直流電...
The AC or DC are automatically judged and the voltage is measured. (The instrument does not measure both AC and DC at the same time.) voltage voltage DT4221 3.4 導通 3.5 ダイオード 3.2 自動判別 2 HIOKI DT4221A981-03 3.2 交直自動判別 1...
4.1 オートレンジ • During the measurement of low frequency voltage, if the auto range does not stabilize and the frequency cannot be measured, fix the voltage range and measure again. The frequency is measured. 4.4 相対値ゼロアジャスト 4.4 ゼロアジャスト HIOKI DT4221A981-03...
(The position of the rotary switch varies depending on the model.) Detection Threshold Buzzer 3.4 導通 3.5 ダイオード Sounds Ω Ω Short circuit detection 25 ±10 (continuous buzzer sound) Ω Ω Open detection ±10 Does not sound DT4222 HIOKI DT4221A981-03...
Measuring Diode (DT4222, DT4224) 3.5 Measuring Diode (DT4222, DT4224) The forward voltage of the diode is measured. Forward voltage Buzzer Backlight – 0.15 V to 1.5 V Intermittent sound Less than 0.15 V Continuous sound Lights up in red (DT4224 only) WARNING 3.2 交直自動判別...
Measuring Resistance (DT4222, DT4223, DT4224) 3.6 Measuring Resistance (DT4222, DT4223, DT4224) 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.
Measuring Capacitance (DT4222, DT4224) 3.7 Measuring Capacitance (DT4222, DT4224) The capacity of the capacitor is measured. WARNING Before measuring, be sure to turn off the power to 3.3 周波数 3.4 導通 the measurement circuit. Otherwise, electric shock may occur or the instrument may be damaged.
When the detection level is exceeded, a buzzer sounds. Reference detection level Reference detection level for the power line 4.7 OFF1 4.7 バックライト 4.7 OFF2 80 V AC to 600 V AC HIOKI DT4221A981-03 1.4 電圧以外の測定 超え 3.8 検出レベル 4.3 FILTER OFF DT4221 DT4222...
3.5 右 Measuring with the auto range [RANGE: AUTO] lights up. 4.1 オートレンジ 4.1 マニュアルレンジ 4.2 測定値をホールド When the measurement function is switched using the rotary switch, the auto range is enabled. ト 4.4 ゼロアジャスト 4.4 ゼロアジャスト2 4.7 ソフトバージョン HIOKI DT4221A981-03...
Selecting the Measurement Range Measuring with the manual range 3.5 左 3.5 右 3.6 抵抗 DT4221, DT4222 Press [RANGE: MANUAL] lights up. Each time is pressed, the range is switched. When the key is pressed at the 3.2 交流電圧 3.2 交流・直流自動判別 1 3.2 交流・直流自動判別...
Retaining the measured value manually (HOLD) To retain the measured value, press ([HOLD] lights up and the measured value is retained.) To cancel the hold state, press it again. ([HOLD] goes off.) 4.2 測定値をホールド 4.3 ノイズ軽減 4.7 ソフトバージョン 2.1、3.2 直流電圧 HIOKI DT4221A981-03...
• If the input signal is too small for the relevant range, the measured value cannot be automatically retained. • The measured value is automatically retained after it remains stable (for approx. 2 seconds) within the stable range. HIOKI DT4221A981-03...
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120 counts 120 counts 600.0 mV range) AUTO V within 120 counts 120 counts Resistance, within 100 counts 4900 counts Continuity Diode within 40 counts 1460 counts * The auto hold function only operates for the listed measurement functions. HIOKI DT4221A981-03...
• When the desired passband setting is displayed for 2 ド 4.3 ノイズ軽減 seconds, the setting is applied and then the measurement display reappears. • If the FILTER setting is changed, the relative value function (REL) will be canceled. ン 2.1、3.2 直流電圧 HIOKI DT4221A981-03...
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Frequency at 100 V input (Hz) Example: Power frequency on an aircraft or marine vessel is 400 Hz When voltage is 100 V FILTER setting Displayed value Normal Approx. 100 V 500 Hz Abnormal 100 Hz Around 0 V HIOKI DT4221A981-03...
Checking the relative value (REL) 3.7 静電容量 4.1 オートレンジ 4.1 マニュアルレン Example 1: DC voltage measurement For the DT4221, DT4222 When the standard value is measured, press for at least 1 second. For the DT4223, DT4224 When the standard value is measured, press for at least 1 second.
3.4 導通 3.5 ダイオー Ω Measurement function Condition of the test leads Short circuit Open Example 1: Resistance measurement (DT4222, DT4223, DT4224) Select the measurement function. Connect the test leads to the measurement DT4222 terminals. Allow the test leads to DT4222 short circuit.
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Checking the Relative Value/Performing Zero Adjustment Example 2: Capacitor measurement (DT4222, DT4224) Select the measurement function. Connect the test leads to the measurement terminals. Allow the test leads to open. DT4222: Press for at least 1 second. 4.4 ゼロアジャスト2 DT4224: Press at least 1 second.
(p. 5 4) • After use, set the rotary switch to OFF. The sleep mode consumes a small amount of current. Recovering from a power shutdown Set the rotary switch to OFF and turn on the power again. HIOKI DT4221A981-03...
4.7 バックライト 4.7 バックライト 4.7 OFF2 4.7 OFF2 1.4 電源遮断 1.4 電源遮 (DT4221, DT4222) • The setting is retained even if the instrument is turned off. To enable the setting again, repeat the same action. (DT4223, DT4224) HIOKI DT4221A981-03 1.4 電圧以外の測定...
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Check that there are no missing indicators. If any indicator is missing, stop using the instrument and send Displaying it for repair. indicators (Third position from OFF) The 9-digit serial number is displayed 3 digits at a time. Example: 123456789 Displaying the serial number HIOKI DT4221A981-03...
Indoors, pollution degree 2, altitude up to 2000 m environment (6562 ft.) Operating • Temperature temperature and −10°C to 50°C (14°F to 122°F) (DT4221, DT4222) humidity −10°C to 65°C (14°F to 149°F) (DT4223, DT4224) • Humidity −10°C to 40°C (14°F to 104°F): 80% RH or less (no condensation) 40°C to 45°C (104°F to 113°F): 60% RH or less...
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General Specifications Storage −30°C to 60°C (−22°F to 140°F) (DT4221, DT4222) temperature and −30°C to 70°C (−22°F to 158°F) (DT4223, DT4224) humidity 80% RH or less (no condensation) Dust-proof and IP42 (EN60529) water-proof Drop-proof 1 m on concrete (with the holster attached)
0.05 to 5 times/s (varies depending on the capacitance)* 1 to 2 times/s (frequency)* • Bar graph: Updated 40 times/s Maximum rated 600 V DC/AC or 3 × 10 V • Hz voltage between terminals HIOKI DT4221A981-03...
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LR03 alkaline battery, DCV measurement operating time Backlight off: Approx. 40 hours* Approx. 35 hours* *1: Until the values stabilize within the accuracy specification range. *2: Measured within the measurement range (excluding range movement). *3: DT4221, DT4222 *4: DT4223, DT4224 HIOKI DT4221A981-03...
*1: The accuracy is specified in 1% or more of the range, however, ±5 dgt. should be added to 5% or less of the range. • Overload protection: 660 V DC/660 V AC or 3 × 10 V • Hz (energized for 1 minute) (DT4221, DT4222) HIOKI DT4221A981-03...
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999.9 Hz 100.0 Hz to 0.600 V or 6.00 V or more 60.0 V or more 999.9 Hz more 9.999 kHz 1.000 kHz to 0.600 V or 6.00 V or more 60.0 V or more 9.999 kHz more HIOKI DT4221A981-03...
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±1.5% • Overload protection: 660 V DC/660 V AC or 3 × 10 V • Hz (energized for 1 minute) (DT4221, DT4222) • Overload protection: 750 V DC/750 V AC or 3 × 10 V • Hz (energized for 1 minute) (DT4223, DT4224) •...
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600.0 ±1.0% rdg. ±5 dgt. 200 µA ±20% • Open circuit voltage: 1.8 V DC or less (DT4221, DT4222) 2.0 V DC or less (DT4223, DT4224) • 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...
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60.00 M ±1.5% rdg. ±5 dgt. 10 nA ±20% • Open circuit voltage: 1.8 V DC or less (DT4222) 2.0 V DC or less (DT4223, DT4224) • 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...
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• During the forward connection, an intermittent buzzer sounds (threshold: 0.15 V to 1.5 V). • A continuous buzzer sounds at less than 0.15 V. (DT4222) • A continuous buzzer sounds, red backlight lit at less than 0.15 V. (DT4224)
• 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. Disposal Handle and dispose of the instrument in accordance with local regulations. HIOKI DT4221A981-03...
• 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.
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(p. 48) value. Turning on the power Reset the instrument. If the same symptom brings up the error still occurs even after resetting the instrument, display. send the instrument for repair. When nothing is connected, the error display appears. HIOKI DT4221A981-03...
When the error appears in ROM error Err 2 the display, it is necessary Adjustment data to repair the instrument. EEPROM error Contact your authorized Err 4 Memory data Hioki distributor or reseller. ADC error Err 5 Hardware malfunction HIOKI DT4221A981-03...
100 V sine wave 100 V 100 V 100 V square wave 100 V 111 V V(t) V(t) Vavg Vrms Vm=Vavg=Vrms Sine wave Square wave Vm: Maximum value, Vavg: Average value, Vrms: RMS, T: Time period 正弦波 HIOKI DT4221A981-03 方形波 Appx.
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