1. Pengenalan
The UNI-T UT201R is a True RMS digital clamp meter designed for measuring AC current, AC/DC voltage, resistance, continuity, diode, and frequency. This manual provides essential information for the safe and effective use of the device, including setup, operation, maintenance, and troubleshooting.
Please read this manual thoroughly before operating the UT201R to ensure proper functionality and to prevent potential hazards.
2. Maklumat Keselamatan
Amaran: To avoid electric shock or personal injury, read the safety information carefully before using the meter. Observe all common safety practices related to working with electricity.
- Jangan gunakan lebih daripada vol yang dinilaitage, seperti yang ditandakan pada meter, antara terminal atau antara mana-mana terminal dan tanah bumi.
- Berhati-hati apabila bekerja dengan voltagadalah melebihi 30V AC RMS, puncak 42V atau 60V DC. Ini voltagia menimbulkan bahaya kejutan.
- Before each use, inspect the meter and test leads for any damage. Do not use if damaged.
- Pastikan suis fungsi berada di kedudukan yang betul untuk pengukuran yang sedang dilakukan.
- Jangan gunakan meter dalam gas meletup, wap atau persekitaran berdebu.
- Simpan jari di belakang pelindung jari pada probe ujian semasa pengukuran.
- Tanggalkan wayar ujian daripada litar sebelum menukar fungsi.
- Gantikan bateri dengan segera apabila penunjuk bateri lemah muncul untuk memastikan bacaan yang tepat.
- Adhere to IEC 61010 safety standards. The UT201R is rated CAT III 300V and CAT II 600V.
3. Produk Lebihview
3.1 Komponen yang Disertakan
The UNI-T UT201R package includes the following items:
- 1 x UT201R Clamp Meter
- 1 x Pair of UNI-T Test Leads (Red and Black)
- 1 x Carrying Case (Black)
- 1 x Paper Manual

Rajah 3.1: UT201R Clamp Meter with test leads, carrying case, and manual.
3.2 Meter Layout
Familiarize yourself with the main components of the UT201R clamp meter:

Rajah 3.2: Depan view of the UT201R, showing the clamp jaw, display, function dial, and buttons.
- Cl semasaamp rahang: Digunakan untuk pengukuran arus AC tanpa sentuhan.
- Penderia NCV: Vol. Bukan Kenalantagpengesanan e.
- Paparan LCD: Menunjukkan bacaan ukuran, unit dan penunjuk fungsi.
- Dail Fungsi: Selects measurement modes (AC Current, Voltage, Rintangan, dsb.).
- Butang:
- PILIH: Toggles between functions within a dial position (e.g., AC/DC voltage, resistance/continuity/diode).
- MAX / MIN: Records maximum and minimum readings.
- HOLD/☀: Data Hold function; long press for backlight.
- Bicu Input:
- COM: Common input jack for black test lead.
- VℹHz: Input jack for red test lead for voltage, rintangan, kekerapan, kesinambungan, dan ukuran diod.

Rajah 3.3: belakang view of the UT201R, showing the battery compartment and safety warnings.
4. Spesifikasi
Key technical specifications for the UNI-T UT201R Digital Clamp meter:
| Ciri | Spesifikasi |
|---|---|
| Jenama | UNI-T |
| Model | UT201R |
| Jenis Pengukuran | Clamp Meter (True RMS) |
| Sumber Kuasa | Dikuasakan Bateri |
| Vol Operasi Maksimumtage | 600 Volt |
| Penarafan Suhu Atas | 40 Darjah Celsius |
| Standard Keselamatan | IEC 61010 (CAT III 300V, CAT II 600V) |
| Kiraan Paparan | 4000 Kiraan |
| warna | Hitam/Merah |

Rajah 4.1: Physical dimensions of the UT201R clamp meter.
5. Persediaan
5.1 Pemasangan Bateri
The UT201R requires two AAA batteries (not always included, check packaging). To install or replace batteries:
- Pastikan meter dimatikan dan tiada wayar ujian disambungkan.
- Locate the battery compartment cover on the back of the meter (refer to Figure 3.3).
- Gunakan pemutar skru untuk melonggarkan skru pada penutup bateri.
- Remove the cover and insert the batteries, observing correct polarity (+ and -).
- Pasang semula penutup bateri dan ketatkan skru.
Nota: Tanggalkan bateri jika meter tidak digunakan untuk tempoh yang lama bagi mengelakkan kebocoran.
5.2 Menghubungkan Petunjuk Ujian
Untuk voltage, resistance, continuity, diode, and frequency measurements, connect the test leads as follows:
- Masukkan petunjuk ujian hitam ke dalam COM bicu input.
- Masukkan petunjuk ujian merah ke dalam VℹHz bicu input.
Pastikan sambungan kukuh sebelum mengambil sebarang ukuran.
6. Arahan Operasi
Always ensure the meter is set to the correct function before making any measurement.
6.1 Pengukuran Arus AC
- Putar dail fungsi ke 40A~ or 400A~ kedudukan.
- Buka clamp rahang dengan menekan picu.
- Masukkan hanya satu konduktor litar dalam clamp rahang. Pastikan rahang ditutup sepenuhnya.
- Baca nilai semasa AC pada paparan LCD.
Nota: Jangan clamp multiple conductors simultaneously, as this will result in an inaccurate reading (the magnetic fields will cancel each other out).

Rajah 6.1: Measuring AC current with the clamp jaw around a single conductor.
6.2 AC/DC Jldtage Pengukuran
- Sambungkan petunjuk ujian seperti yang diterangkan dalam Bahagian 5.2.
- Putar dail fungsi ke V∼ (Jilid ACtage) atau V— (DC Voltage) position. If the dial position is shared, press the PILIH button to toggle between AC and DC.
- Connect the test probes in parallel to the circuit or component being measured.
- Baca voltagnilai e pada paparan LCD.
6.3 Pengukuran Rintangan
- Pastikan litar dinyahtenagakan sebelum mengukur rintangan.
- Sambungkan petunjuk ujian seperti yang diterangkan dalam Bahagian 5.2.
- Putar dail fungsi ke Ω position. Press PILIH if needed to choose resistance mode.
- Sambungkan kuar ujian merentasi komponen yang hendak diukur.
- Baca nilai rintangan pada paparan LCD.
6.4 Ujian Kesinambungan
- Pastikan litar dinyahtenagakan.
- Sambungkan petunjuk ujian seperti yang diterangkan dalam Bahagian 5.2.
- Putar dail fungsi ke Ω kedudukan dan tekan PILIH until the continuity symbol (♫) appears on the display.
- Sambungkan kuar ujian merentasi litar atau komponen.
- Jika kesinambungan wujud (rintangan di bawah ambang tertentu), meter akan mengeluarkan bunyi bip yang boleh didengar.
6.5 Ujian Diod
- Pastikan litar dinyahtenagakan.
- Sambungkan petunjuk ujian seperti yang diterangkan dalam Bahagian 5.2.
- Putar dail fungsi ke Ω kedudukan dan tekan PILIH until the diode symbol (▲) appears on the display.
- Sambungkan prob ujian merah ke anod dan prob ujian hitam ke katod diod.
- Paparan akan menunjukkan vol ke hadapantage drop. Balikkan kuar; bacaan litar terbuka menunjukkan diod yang baik.
6.6 Pengukuran Kekerapan
- Sambungkan petunjuk ujian seperti yang diterangkan dalam Bahagian 5.2.
- Putar dail fungsi ke Hz position (often shared with voltage atau semasa, gunakan PILIH sekiranya perlu).
- Connect the test probes in parallel to the circuit where frequency is to be measured.
- Read the frequency value in Hertz (Hz) on the LCD display.
6.7 Bukan Kenalan Voltage (NCV) Pengesanan
- Putar dail fungsi ke NCV kedudukan.
- Move the NCV sensor (located at the top of the clamp rahang) dekat dengan konduktor atau alur keluar.
- Sekiranya AC voltage is detected, the meter will emit an audible beep and the NCV indicator light will flash. The intensity of the beeping and flashing may increase with stronger fields.
Amaran: NCV detection is for indication only. Always verify voltage presence or absence with direct contact measurement before working on a circuit.
7. Penyelenggaraan
7.1 Pembersihan
Lap meter casing dengan iklanamp kain dan detergen lembut. Jangan gunakan bahan pelelas atau pelarut. Pastikan meter kering sepenuhnya sebelum digunakan.
7.2 Penggantian Bateri
When the low battery indicator appears on the display, replace the batteries as described in Section 5.1. Always use new batteries of the specified type.
7.3 Penentukuran
The UT201R is factory calibrated. For professional calibration services, contact UNI-T customer support or an authorized service center.
8. Penyelesaian masalah
If the meter does not function correctly, refer to the following common issues and solutions:
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Tiada paparan atau paparan malap | Dead or low batteries; incorrect battery polarity. | Replace batteries; check battery orientation. |
| Bacaan tidak tepat | Incorrect function selected; poor test lead connection; external interference. | Verify function dial position; ensure leads are firmly connected; move away from strong electromagnetic fields. |
| "OL" (Lebihan) dipaparkan | Input value exceeds the meter's range. | Select a higher range (if available) or ensure the measurement is within the meter's capabilities. |
| Tiada bip kesinambungan | Circuit is open; continuity threshold not met. | Check circuit for breaks; ensure resistance is below the meter's continuity threshold. |
If the problem persists, contact UNI-T customer support.
9. Waranti dan Sokongan
For warranty information, technical support, or service, please refer to the official UNI-T webtapak atau hubungi pengedar tempatan anda. Simpan resit pembelian anda sebagai bukti pembelian untuk tuntutan waranti.
UNI-T Official Webtapak: www.uni-trend.com