CEM DT-3398B

CEM DT-3398B True RMS AC/DC Clamp Manual Pengguna Meter

Model: DT-3398B

1. Pengenalan dan Lebihview

The CEM DT-3398B Series Professional True RMS Clamp Meter is designed to provide accurate AC and AC/DC current and voltage readings, irrespective of waveform distortions. This instrument is suitable for a wide range of industrial and commercial applications, particularly where non-linear loads may affect current or voltage bentuk gelombang.

Ciri-ciri utama termasuk:

  • AC/DC 2000A Current measurement with a 2-inch (52mm) jaw opening.
  • 6000 counts LCD display for clear readings.
  • True RMS measurements for accurate readings on non-sinusoidal waveforms.
  • Mengukur Voltage Range: 1000V AC/DC.
  • Measuring Resistance Range: 60MΩ.
  • Measuring Capacitance Range: 10mF.
  • NVC (Non-Contact Voltage) Detection.
  • Built-in Flashlight for illuminated work areas.
  • Bluetooth connectivity for data transmission.
  • Electronic overload protection: CAT IV 1000V.
CEM DT-3398B Clamp Hadapan meter view

Rajah 1: Depan view of the CEM DT-3398B Clamp Meter, showing the display, rotary dial, and function buttons.

2. Maklumat Keselamatan

Read and understand all safety information before operating this meter. Failure to follow these instructions may result in electric shock, fire, or serious injury.

  • CAT IV 1000V Rating: This meter is rated for CAT IV 1000V, indicating its suitability for measurements at the source of the low-voltage pemasangan, seperti meter elektrik dan peranti perlindungan arus lebih utama.
  • Bahaya Kejutan Elektrik: Always assume that any circuit is live until proven otherwise. Do not touch exposed conductors or circuit components.
  • Penggunaan yang betul: Use the meter only as specified in this manual. Do not exceed the maximum input limits for any function.
  • Pemeriksaan: Before each use, inspect the meter, test leads, and accessories for any damage. Do not use if damaged.
  • Penggantian Bateri: Ensure the meter is disconnected from all circuits and powered off before opening the battery compartment.
  • Keadaan Persekitaran: Do not operate the meter in explosive atmospheres or in wet conditions.
  • Alat Pelindung Diri (PPE): Always wear appropriate PPE, such as safety glasses and insulated gloves, when working with electrical circuits.

3. Ciri-ciri Produk

The DT-3398B clamp meter offers a comprehensive set of features for professional electrical measurements:

  • Pengukuran RMS Sebenar: Provides accurate readings for both sinusoidal and non-sinusoidal AC waveforms.
  • Large Jaw Opening: 2-inch (52mm) jaw opening accommodates large conductors.
  • Kapasiti Arus Tinggi: Measures up to 2000A AC/DC current.
  • Voltage Pengukuran: Measures up to 1000V AC/DC voltage.
  • Resistance and Capacitance: Includes functions for measuring resistance up to 60MΩ and capacitance up to 10mF.
  • Continuity Buzzer & Diode Check: For quick circuit testing.
  • Data Hold & Peak Hold: Allows freezing of displayed readings and capturing peak values.
  • Lampu Suluh & Lampu Belakang: Enhances visibility in dimly lit environments.
  • Fungsi MAKSIMUM/MINIT: Records maximum and minimum readings over a measurement period.
  • Pengukuran Arus Masuk: Captures transient current surges during motor startup.
  • DCA Zero Function: For accurate DC current measurements.
  • Pengesanan NCV: Vol. Bukan Kenalantage detection for identifying live wires without physical contact.
  • Auto Matikan: Menjimatkan hayat bateri.
  • Bluetooth Data Transmission: Enables remote monitoring and data logging via a mobile application.
CEM DT-3398B Clamp Meter with power lines background, highlighting mobile app connectivity

Figure 2: The DT-3398B Clamp Meter, illustrating its capability for AC/DC TRMS measurement and mobile app integration via Bluetooth.

4. Persediaan

4.1 Pemasangan Bateri

The DT-3398B requires one 9V battery for operation. To install or replace the battery:

  1. Ensure the meter is powered off and disconnected from all circuits.
  2. Cari penutup petak bateri di bahagian belakang meter.
  3. Gunakan pemutar skru untuk melonggarkan skru yang mengikat penutup.
  4. Remove the cover and insert a new 9V battery, observing correct polarity.
  5. Replace the cover and tighten the screw(s).

4.2 Menghubungkan Petunjuk Ujian

Untuk voltage, resistance, capacitance, and diode measurements, connect the test leads to the input jacks:

  • Masukkan petunjuk ujian hitam ke dalam COM (Umum) jek.
  • Masukkan petunjuk ujian merah ke dalam VΩCAPHzTemp jek.
User holding CEM DT-3398B Clamp Meter with test leads connected

Figure 3: User holding the DT-3398B Clamp Meter, demonstrating proper grip and test lead connection points.

5. Arahan Operasi

This section details the operation of various functions of the DT-3398B clamp meter.

5.1 Hidup/Mati dan Pemilihan Fungsi

  • To power on the meter, rotate the central rotary dial from the DIMATIKAN position to the desired measurement function.
  • To power off, rotate the dial back to the DIMATIKAN kedudukan.
  • The meter features an Auto Matikan function to conserve battery life. It will automatically shut down after a period of inactivity.

5.2 Pengukuran Arus AC/DC (Clamp Rahang)

  1. Putar dail ke A~ (Arus AC) atau A= kedudukan (Arus DC).
  2. Tekan picu rahang untuk membuka clamp Rahang.
  3. Encircle a single conductor with the clamp rahang. Pastikan rahang ditutup sepenuhnya.
  4. Baca nilai semasa pada paparan LCD.
  5. For DC current, use the DCA Zero function (if available via a button) to zero the display before measurement to eliminate residual magnetism effects.

5.3 AC/DC Jldtage Pengukuran

  1. Putar dail ke V~ (Jilid ACtage) atau V= (DC Voltage) kedudukan.
  2. Sambungkan plumbum ujian hitam ke COM bicu dan ujian merah membawa kepada VΩCAPHzTemp jek.
  3. Sentuhkan prob ujian ke titik litar di mana voltage perlu diukur.
  4. Baca voltagnilai e pada paparan LCD.

5.4 Resistance, Continuity, Diode, and Capacitance Measurement

  1. Putar dail ke ΩCAP kedudukan.
  2. Sambungkan petunjuk ujian seperti yang diterangkan dalam Bahagian 4.2.
  3. Gunakan MODE button to cycle through Resistance (Ω), Continuity (buzzer icon), Diode (diode symbol), and Capacitance (CAP) functions.
  4. For resistance, connect probes across the component.
  5. For continuity, a beep indicates a continuous circuit.
  6. For diode test, connect probes across the diode.
  7. For capacitance, connect probes across the capacitor (ensure it is discharged).

5.5 NCV (Not-Contact Voltage) Pengesanan

  1. Putar dail ke NCV kedudukan.
  2. Move the top of the meter near a conductor or outlet.
  3. The meter will emit an audible beep and/or visual indication (e.g., flashing LED) if AC voltage dikesan.

5.6 Special Functions (HOLD, MAX/MIN, Inrush, Flashlight, Bluetooth)

  • DIBERI: Tekan ke TAHAN butang untuk membekukan bacaan semasa pada paparan. Tekan sekali lagi untuk melepaskan.
  • MAX / MIN: In a measurement function, press the MAX/MIN button to enter MAX/MIN recording mode. The meter will display the maximum or minimum value recorded. Press again to cycle.
  • Masuk: This function is typically activated by a dedicated button or a specific dial position. It measures the initial surge current when a device (like a motor) starts up.
  • Lampu suluh: Press the flashlight button (if dedicated) or hold a specific function button to activate the built-in flashlight.
  • Bluetooth: Activate Bluetooth on the meter (if a dedicated button exists) and pair with a compatible mobile device running the specified application for data logging and remote viewing. Refer to the mobile application's instructions for detailed usage.
CEM DT-3398B Clamp Meter measuring current on a wire, highlighting features like Peak Hold and Inrush Current

Figure 4: The DT-3398B Clamp Meter in use, demonstrating its ability to measure current and highlighting advanced features such as Peak Hold and Inrush Current measurement.

6. Penyelenggaraan

6.1 Pembersihan

Lap bekas meter dengan iklanamp kain dan detergen lembut. Jangan gunakan bahan pelelas atau pelarut. Pastikan meter kering sepenuhnya sebelum digunakan.

6.2 Penggantian Bateri

Refer to Section 4.1 for instructions on battery replacement. Replace the battery when the low battery indicator appears on the display to ensure accurate measurements.

6.3 Penentukuran

Periodic calibration by qualified personnel is recommended to ensure the meter maintains its accuracy over time. Contact CEM customer support for calibration services.

7. Penyelesaian masalah

Masalah Kemungkinan Punca Penyelesaian
Meter tidak dihidupkan. Bateri mati atau tidak dipasang dengan betul. Gantikan bateri 9V, pastikan kekutuban yang betul.
Bacaan yang tidak tepat. Low battery, incorrect function selected, damaged test leads, external interference. Replace battery, verify function, check test leads for damage, move away from strong electromagnetic fields.
"OL" atau "OVER" dipaparkan. Measurement exceeds the meter's range. Select a higher range if available, or ensure the measured value is within the meter's specifications.
No NCV detection. Tiada AC voltage present, or meter not close enough to the source. Verify the presence of AC voltage with another method, ensure the meter's NCV sensor is close to the conductor.
Isu sambungan Bluetooth. Bluetooth not enabled on meter or mobile device, app issues, out of range. Ensure Bluetooth is active on both devices, restart app, move closer to the meter.

8. Spesifikasi

The following table outlines the key technical specifications for the CEM DT-3398B Clamp meter:

Fungsi Julat Maks Ketepatan Asas Maks. Resolusi
AC Semasa 2000 A ±(2.5%+5h) 1A
Arus DC 2000 A ±(2.5%+5h) 1A
Vol. ACtage 1000V ±(0.8%+2h) 0.1mV
DC Voltage 1000V ±(1.0%+4h) 0.1mV
Rintangan 60MΩ ±(1.0%+5h) 0.1Ω
Kapasitansi 10mF ±(3.0%+5h) 0.01nF
Electronic Frequency 100KHz ±(1.2%+3h) 0.01kHz
Suhu 1000°C/1832°F ±(3.0%+5h) 1°C/°F
Herotan Harmonik Keseluruhan 99.9% 0.1% ±(3%+10h)
Pengukuran herotan harmonik 99.9% 0.1% ±(5%+10h)
Kuasa Aktif 999.9KW A error x Vreading + Verror x Areading *
Faktor Kuasa -1.0 ~ 0.0 ~ 1.0 ±(3%+1h) *
Semakan kesinambungan Buzzer sounds at 50Ω *
Ujian diod Test current <0.5mA Max 3V *

Spesifikasi Umum:

  • paparan: 6000 kiraan LCD
  • Pembukaan Rahang: 2 inci (52mm)
  • Bekalan Kuasa: Bateri 9V
  • Dimensi (LxWxH): 308mm x 97mm x 47mm
  • Berat: 732g
  • Penilaian Keselamatan: CAT IV 1000V
  • Sijil: CE, ISO 9001, RoHS
  • Aksesori: Test leads, temperature probe (for 3398B/3398W), gift box with carrying case. (Note: 9V battery is required and typically included, contradicting some accessory lists.)
Detailed specifications table for CEM DT-3398B Clamp Meter

Figure 5: Detailed technical specifications for the DT-3398B Clamp Meter, including measurement ranges, accuracy, and resolution.

9. Waranti dan Sokongan

The manufacturer provides a 2-year availability for spare parts. For warranty claims, technical support, or service inquiries, please contact your local distributor or the manufacturer directly. Keep your purchase receipt as proof of purchase.