1. Pendahuluan
Thank you for choosing the Irfora T58B Digital Multimeter. This instrument is a handheld, true RMS digital multimeter designed for accurate measurement of AC/DC voltage, AC/DC current, frequency, resistance, capacitance, and diodes. It is a versatile tool for solving industrial and household electrical problems, suitable for both DIY enthusiasts and professionals.
Please read this manual thoroughly before use to ensure safe and proper operation. Keep this manual for future reference.
2. Informasi Keselamatan
Peringatan: To avoid electric shock or personal injury, and to prevent damage to the meter or the equipment under test, observe the following safety rules:
- Selalu pastikan meteran berada pada fungsi dan rentang yang tepat untuk pengukuran.
- Jangan gunakan lebih dari volume terukurtage, seperti yang ditandai pada meteran, antara terminal atau antara terminal mana pun dan ground ground.
- Berhati-hatilah saat bekerja dengan voltagtegangan di atas 30V AC RMS, 42V puncak, atau 60V DC. Tegangan tersebuttagmenimbulkan bahaya sengatan listrik.
- Sebelum melakukan pengukuran arus, pastikan sekering meter dalam keadaan utuh dan kabel uji terhubung ke jack input yang benar.
- Lepaskan kabel uji dari sirkuit sebelum mengubah fungsi atau rentang.
- Jangan gunakan alat ukur jika tampak rusak atau jika isolasi pada kabel uji terganggu.
- Ganti baterai segera setelah indikator baterai lemah muncul untuk menghindari pembacaan yang salah.
- Patuhi kode keselamatan lokal dan nasional.
3. Produk Lebihview
The Irfora T58B Digital Multimeter features a robust design and a clear LCD display for easy readings.

Gambar 3.1: Depan view of the Irfora T58B Digital Multimeter with labeled components. Key features include the LED Display, NCV and Buzzer Indicator Light, Gear Rotary Switch, Input Sockets, and various function buttons.

Gambar 3.2: Dimensions of the Irfora T58B Digital Multimeter. The device measures approximately 187mm (7.36in) in height, 95mm (3.74in) in width, and 55mm (2.16in) in depth.

Gambar 3.3: Belakang view of the multimeter showing the 90-degree adjustable support stand and integrated storage slots for test leads, designed for convenience and protection.

Gambar 3.4: Lebihview of the Irfora T58B Digital Multimeter's capabilities, including 9999 counts display, and measurement of current, resistance, capacitance, temperature, and frequency.
Fitur Utama:
- 9999 Counts LCD Digital Display with Backlight
- Pengukuran RMS Sejati
- Volume Non-Kontaktage (NCV) Deteksi
- Mati Otomatis
- Data Hold and Relative Value Measurement
- Flashlight Function for low-light conditions
- Mengukur AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, and Temperature
- Dioda dan Uji Kontinuitas
4. Pengaturan
4.1. Pemasangan Baterai
The Irfora T58B Multimeter requires 3 x 1.5V AAA batteries (not included). To install or replace batteries:
- Pastikan multimeter dimatikan dan lepaskan semua kabel uji dari terminal input.
- Temukan penutup ruang baterai di bagian belakang meteran.
- Gunakan obeng untuk melonggarkan sekrup yang mengencangkan penutup baterai.
- Remove the cover and insert the 3 AAA batteries, observing the correct polarity (+ and -).
- Pasang kembali penutup baterai dan kencangkan sekrupnya.
Catatan: Remove batteries if the meter is not used for an extended period to prevent leakage.
4.2. Menghubungkan Kabel Uji
Always connect the black test lead to the "COM" (Common) input jack. Connect the red test lead to the appropriate input jack based on the measurement type:
- Untuk Voltage, Resistance, Capacitance, Frequency, Diode, and Temperature measurements: Connect the red lead to the "VΩHz°C" jack.
- For Current measurements (up to 600mA): Connect the red lead to the "µA mA" jack.
- For High Current measurements (up to 10A): Connect the red lead to the "10A" jack.
Ensure test leads are fully inserted into the jacks before use.
5. Petunjuk Pengoperasian
To operate the multimeter, turn the Gear Rotary Switch to the desired function. The meter will automatically select the appropriate range in most modes (AUTO function).
5.1. Volt AC/DCtage Pengukuran
- Putar sakelar putar ke "V~" (Volume AC)tage) atau "V-" (DC Voltage) posisi.
- Connect the black test lead to the "COM" jack and the red test lead to the "VΩHz°C" jack.
- Sentuhkan probe penguji ke titik-titik sirkuit di mana tegangantage harus diukur.
- Baca vol.tagnilai e pada layar LCD.
5.2. Pengukuran Arus AC/DC
Peringatan: Jangan pernah menghubungkan meteran secara paralel dengan tegangan.tagSumber arus listrik dapat menyebabkan putusnya sekring atau kerusakan pada meteran.
- Turn the rotary switch to the "µA mA" or "A" position for AC or DC current. Use the "FUNC" button to switch between AC and DC if necessary.
- Connect the black test lead to the "COM" jack. Connect the red test lead to the "µA mA" jack for currents up to 600mA, or to the "10A" jack for currents up to 10A.
- Buka rangkaian tempat arus akan diukur dan hubungkan meter secara seri dengan beban.
- Baca nilai saat ini pada layar LCD.
5.3. Pengukuran Resistansi
- Putar sakelar putar ke posisi "Ω".
- Connect the black test lead to "COM" and the red test lead to "VΩHz°C".
- Pastikan rangkaian dimatikan sebelum mengukur resistansi.
- Touch the test probes across the component or circuit where resistance is to be measured.
- Bacalah nilai resistansi pada layar LCD.
5.4. Pengukuran Kapasitansi
- Turn the rotary switch to the "Capacitance" position (often shared with other functions, use FUNC button if needed).
- Connect the black test lead to "COM" and the red test lead to "VΩHz°C".
- Discharge the capacitor completely before measurement to avoid damage to the meter.
- Sentuhkan probe penguji di antara terminal kapasitor.
- Baca nilai kapasitansi pada layar LCD.
5.5. Pengukuran Frekuensi
- Putar sakelar putar ke posisi "Hz".
- Connect the black test lead to "COM" and the red test lead to "VΩHz°C".
- Touch the test probes across the circuit where frequency is to be measured.
- Baca nilai frekuensi pada layar LCD.
5.6. Diode Test and Continuity
- Turn the rotary switch to the "Diode/Continuity" position. Use the "FUNC" button to toggle between diode test and continuity.
- Connect the black test lead to "COM" and the red test lead to "VΩHz°C".
- For Diode Test: Place the red probe on the anode and the black probe on the cathode. The display will show the forward voltage drop. Balikkan probe; tampilan seharusnya menunjukkan "OL" (Open Loop) untuk dioda yang baik.
- For Continuity Test: Touch the probes to the circuit points. If resistance is below approximately 50Ω, the buzzer will sound, indicating continuity.
5.7. Pengukuran Suhu
- Turn the rotary switch to the "°C/°F" position.
- Connect the thermocouple (included) to the "VΩHz°C" and "COM" jacks, observing polarity.
- Place the thermocouple tip on the object or area where temperature is to be measured.
- Read the temperature value on the LCD display. Use the "FUNC" button to switch between Celsius and Fahrenheit.
5.8. Volume Non-Kontaktage (NCV) Deteksi

Gambar 5.1: Demonstrating NCV (Non-Contact Voltage) detection. The meter's top is placed near an AC voltage source, and the signal strength indicator lights up, accompanied by an audible alarm.
- Turn the rotary switch to the "NCV" position.
- Place the top of the meter (NCV sensing area) close to the conductor or outlet you suspect has AC voltage.
- Jika tegangan ACtage is detected, the corresponding signal strength indicator (low-yellow, high-red) will light up, and the buzzer will emit different frequency alarms based on signal strength.
5.9. Lampu Latar dan Lampu Senter

Gambar 5.2: The multimeter's backlit screen and integrated flashlight illuminate the display and work area, enhancing visibility in dark environments.
Press the "Lighting/Backlight" button (often marked with a light bulb icon) to turn on the display backlight. Press and hold the same button to activate the flashlight located at the top of the meter. Press again to turn off.
5.10. Mati Otomatis

Gambar 5.3: The multimeter features an automatic shutdown function, turning off after approximately 15 minutes of inactivity to conserve battery life.
The multimeter will automatically power off after approximately 15 minutes of inactivity to conserve battery life. An audible voice prompt will sound before shutdown. To restart the meter, press any button or turn the rotary switch.
6. Pemeliharaan
6.1. Pembersihan
Usap meteran dengan iklanamp Gunakan kain dan deterjen ringan. Jangan gunakan bahan abrasif atau pelarut. Jaga agar terminal input bebas dari kotoran dan kelembapan.
6.2. Penggantian Baterai
When the low battery indicator appears on the display, replace the batteries as described in Section 4.1. Prompt battery replacement ensures accurate readings.
6.3. Penggantian Sekring
Jika alat ukur gagal mengukur arus, kemungkinan sekring putus. Untuk mengganti sekring:
- Pastikan multimeter dimatikan dan lepaskan semua kabel uji.
- Buka penutup kompartemen baterai seperti yang dijelaskan pada Bagian 4.1.
- Lepaskan sekering lama dengan hati-hati.
- Replace with a fuse of the same type and rating:
- For µA mA input: F 600mA/250V
- For 10A input: F 10A/250V
- Pasang kembali penutup baterai dan kencangkan sekrupnya.
7. Penyelesaian masalah
| Masalah | Kemungkinan Penyebab | Larutan |
|---|---|---|
| Meter tidak menyala. | Baterai mati atau tidak terpasang dengan benar. | Check battery polarity and replace batteries if necessary (Section 4.1). |
| No reading or "OL" displayed during measurement. | Incorrect range, open circuit, or blown fuse (for current). | Ensure correct function/range. Check test lead connections. For current, check and replace fuse (Section 6.3). Verify circuit continuity. |
| Pembacaan yang tidak akurat. | Low battery, incorrect connection, or external interference. | Replace batteries. Recheck test lead connections. Move away from strong electromagnetic fields. |
| Buzzer does not sound during continuity test. | Circuit resistance is too high. | Ensure resistance is below approximately 50Ω for continuity indication. |
Jika masalah berlanjut setelah mencoba solusi ini, hubungi dukungan pelanggan.
8. Spesifikasi
The following specifications are for the Irfora T58B Digital Multimeter:
Spesifikasi Umum:
- Display: 9999 Counts LCD display
- Safety Rating: CAT III 600V, CAT II 1000V
- Pollution Grade: 2
- Working Height: Under 2000m
- Working Temperature: 0-40°C (<80%RH, not considered <10°C)
- Storage Temperature: -10~60°C (<80%RH, remove battery)
- Test/Calibration Ambient Temperature: 20°C ± 2°C
- Vol Maksimumtage between Measurement End and Ground: 1000V DC or 750V AC
- Perlindungan Sekering:
- For µA mA input: F 600mA/250V
- For 10A input: F 10A/250V
- Conversion Rate: Approximately 3 readings/second
- Overload Display: "OL"
- Power Supply: 3 * 1.5V AAA batteries (Not included)
- Item Size: 187 * 95 * 55mm / 7.36 * 3.74 * 2.16in
- Item Weight: 331g / 11.67oz
Rentang Pengukuran:
- DC Jiltage: 100mV, 600mV, 1V, 60V, 600V, 1000V
- AC Jiltage: 100mV, 600mV, 1V, 60V, 600V, 750V
- DC Current: 600µA, 6mA, 60mA, 600mA, 6A, 10A
- AC Current: 600µA, 6mA, 60mA, 600mA, 6A, 10A
- Resistansi: 600Ω, 6kΩ, 60kΩ, 600kΩ, 6MΩ, 60MΩ
- Capacitance: 6nF, 60nF, 600nF, 6µF, 60µF, 600µF, 6mF, 60mF
- Frequency: 100Hz, 1KHz, 10KHz, 100KHz, 1MHz, 10MHz, 25MHz
- Temperature: -50°C~1000°C / -58°F~1832°F
- Tes Dioda: Ya
- Buzzer (Continuity): Yes
9. Garansi dan Dukungan
For warranty information or technical support, please refer to the purchase platform or contact Irfora customer service directly. Keep your purchase receipt as proof of purchase.
Informasi Kontak: Please refer to the seller's contact details on the platform where the product was purchased.
