1. Pendahuluan
This manual provides instructions for the safe and effective use of the Sealey MM19 Digital Multimeter. The MM19 is a general-purpose multimeter designed for measuring various electrical parameters, including AC and DC voltage, DC current, resistance, audible continuity, and diode/transistor verification. Please read this manual thoroughly before operation and retain it for future reference.
2. Informasi Keselamatan
Always observe basic safety precautions when using electrical test equipment to reduce the risk of fire, electric shock, or personal injury. This device complies with IEC 1010 and CE CAT II safety standards.
- Do not exceed the maximum input limits for any function. Refer to the specifications section for details.
- Jangan pernah melamartage to the meter when the rotary switch is set to Resistance (Ω), Diode, Continuity, or Current (A) functions.
- Berhati-hatilah saat bekerja dengan voltages above 30V AC RMS, 42V peak, or 60V DC. Volume initagmenimbulkan bahaya sengatan listrik.
- Ensure the test leads are in good condition, without cracked or broken insulation.
- Always connect the common (COM) test lead first and disconnect it last.
- Disconnect power to the circuit under test before measuring resistance or continuity.
- Ganti baterai segera when the low battery indicator appears to ensure accurate readings.
3. Produk Lebihview
The Sealey MM19 Digital Multimeter features a clear LCD display, a central rotary switch for function selection, and input jacks for test leads.

The Sealey MM19 Digital Multimeter, shown with its yellow casing, large LCD display, rotary function switch, and red and black test leads connected to the input jacks.
Komponen:
- Layar LCD: Large (46 x 25mm) digital display for reading measurements.
- Saklar Putar: Digunakan untuk memilih fungsi dan rentang pengukuran yang diinginkan.
- Soket Input VΩmA: Untuk volumetage, pengukuran resistansi, dan arus hingga 200mA.
- 10ADC Input Jack: For high current measurements up to 10A DC (unfused).
- Soket Masukan COM: Input umum (negatif) untuk semua pengukuran.
- Soket hFE: For transistor (NPN/PNP) testing.
- Prospek Tes: Kabel merah (positif) dan hitam (negatif) untuk dihubungkan ke rangkaian listrik.
4. Pengaturan
4.1. Pemasangan Baterai
The Sealey MM19 Multimeter requires a 9V battery for operation. If the display does not illuminate or shows a low battery indicator, the battery needs to be installed or replaced.
- Pastikan multimeter dalam keadaan MATI.
- Temukan penutup kompartemen baterai di bagian belakang unit.
- Lepaskan sekrup yang mengencangkan penutup dan angkat penutupnya dengan hati-hati.
- Connect a new 9V battery to the battery clips, observing correct polarity.
- Letakkan baterai di dalam kompartemen dan pasang kembali penutupnya, kencangkan dengan sekrup.
4.2. Menghubungkan Kabel Uji
The multimeter is supplied with a pair of test leads (red and black).
- Masukkan kabel uji hitam ke dalam DAPAT Soket input (umum).
- Untuk sebagian besar pengukuran (vol)tage, resistance, low current), insert the kabel uji merah ke dalam VΩmA jack masukan.
- For high DC current measurements (up to 10A), insert the kabel uji merah ke dalam 10ADC jack masukan.
5. Petunjuk Pengoperasian
To operate the multimeter, select the desired function and range using the rotary switch.
5.1. Mengukur Tegangan DCtagdan (DCV)
- Insert the red lead into the VΩmA jack and the black lead into the COM jack.
- Set the rotary switch to the desired DCV range (e.g., 200m, 2000m, 20, 200, 1000). Start with the highest range if the voltage tidak diketahui.
- Hubungkan kabel uji ke komponen atau rangkaian yang akan diukur.
- Baca vol.tagnilai e pada layar LCD.
5.2. Mengukur AC Voltage (ACV)
- Insert the red lead into the VΩmA jack and the black lead into the COM jack.
- Set the rotary switch to the desired ACV range (e.g., 200, 750). Start with the highest range if the voltage tidak diketahui.
- Hubungkan kabel uji ke komponen atau rangkaian yang akan diukur.
- Baca vol.tagnilai e pada layar LCD.
5.3. Mengukur Arus DC (DCA)
- For currents up to 200mA: Insert the red lead into the VΩmA jack and the black lead into the COM jack.
- For currents up to 10A: Insert the red lead into the 10ADC jack and the black lead into the COM jack.
- Set the rotary switch to the desired DCA range (e.g., 200μ, 2000μ, 20m, 200m, 10A). Start with the highest range if the current is unknown.
- Matikan daya ke sirkuit. Open the circuit where the current is to be measured.
- Hubungkan multimeter secara seri dengan rangkaian.
- Berikan daya ke rangkaian dan baca nilai arus pada layar LCD.
5.4. Mengukur Resistansi (Ω)
- Insert the red lead into the VΩmA jack and the black lead into the COM jack.
- Set the rotary switch to the desired Resistance (Ω) range (e.g., 200, 2000, 20k, 200k, 2000k).
- Pastikan rangkaian yang sedang diuji dalam keadaan tidak bertegangan.
- Hubungkan kabel uji ke komponen yang akan diukur.
- Bacalah nilai resistansi pada layar LCD.
5.5. Uji Kontinuitas Terdengar
- Insert the red lead into the VΩmA jack and the black lead into the COM jack.
- Set the rotary switch to the continuity symbol (speaker icon).
- Pastikan rangkaian yang sedang diuji dalam keadaan tidak bertegangan.
- Hubungkan kabel uji ke komponen atau kawat.
- If continuity exists (low resistance), the meter will emit an audible tone. The display will show the resistance value.
5.6. Diode/Transistor Verification Mode (hFE)
- Insert the red lead into the VΩmA jack and the black lead into the COM jack for diode testing.
- Set the rotary switch to the diode symbol.
- Hubungkan kabel merah ke anoda dan kabel hitam ke katoda dioda. Layar akan menampilkan tegangan maju.tagTegangan turun. Balikkan kabelnya; tampilan seharusnya menunjukkan 'OL' (open loop) untuk dioda yang baik.
- For transistor hFE measurement, insert the transistor leads (Emitter, Base, Collector) into the appropriate sockets (E, B, C) in the hFE test socket, ensuring correct NPN or PNP type selection.
- Bacalah nilai hFE pada layar LCD.
6. Pemeliharaan
6.1. Pembersihan
Bersihkan meteran casing dengan iklanamp Gunakan kain dan deterjen ringan. Jangan gunakan bahan abrasif atau pelarut. Pastikan meteran benar-benar kering sebelum digunakan.
6.2. Penggantian Baterai
Refer to Section 4.1 for battery installation instructions. Replace the 9V battery when the low battery indicator appears on the display to maintain measurement accuracy.
7. Penyelesaian masalah
- Tidak Ada Tampilan: Periksa pemasangan baterai dan pastikan baterai memiliki daya yang cukup.
- 'OL' or '1' on Display: This usually indicates an over-range condition or an open circuit. Select a higher range or check connections.
- Bacaan yang Salah: Ensure the correct function and range are selected. Check test lead connections and battery condition.
- Tidak Ada Nada Kontinuitas: Verify the circuit is de-energized and the leads are making good contact.
8. Spesifikasi
| Parameter | Nilai |
|---|---|
| Merek | Laut |
| Nomor Model | MM19 |
| Sumber Daya | Bertenaga Baterai (9V) |
| Menampilkan | Digital LCD (46 x 25mm) |
| DC Jiltagdan (DCV) | Tegangan 200mV, 2000mV, 20V, 200V, 1000V |
| AC Jiltage (ACV) | Tegangan 200V, 750V |
| Arus DC (DCA) | 200µA, 2000µA, 20mA, 200mA, 10A |
| Resistensi (Ω) | 200Ω, 2000Ω, 20kΩ, 200kΩ, 2000kΩ |
| Kontinuitas | Audible tone below approx. 30Ω |
| Tes Dioda | Maju voltagtampilan tetesan e |
| Uji Transistor | hFE (NPN/PNP) |
| Peringkat Keamanan | CE CAT II, IEC 1010 |
| Dimensi (P x L x T) | 1.93x4.21x6.06 inci |
| Berat Barang | 9.5 ons (0.27 Kilogram) |
9. Garansi dan Dukungan
For warranty information or technical support, please refer to the documentation provided with your purchase or contact Sealey customer service directly. Keep your proof of purchase for any warranty claims.