Manual Pengguna Multimeter Digital Sealey MM19 7 Fungsi

1. Pengenalan

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. Maklumat 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 sekali-kali memohon voltage to the meter when the rotary switch is set to Resistance (Ω), Diode, Continuity, or Current (A) functions.
• Berhati-hati apabila bekerja dengan voltages above 30V AC RMS, 42V peak, or 60V DC. Ini voltagia menimbulkan bahaya kejutan.
• 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.
• Gantikan bateri dengan 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:

• Paparan LCD: Large (46 x 25mm) digital display for reading measurements.
• Suis Putar: Digunakan untuk memilih fungsi dan julat ukuran yang dikehendaki.
• Bicu Input VΩmA: Untuk voltage, resistance, and current measurements up to 200mA.
• 10ADC Input Jack: For high current measurements up to 10A DC (unfused).
• Bicu Input COM: Input biasa (negatif) untuk semua ukuran.
• Soket hFE: For transistor (NPN/PNP) testing.
• Petunjuk Ujian: Red (positive) and Black (negative) leads for connecting to circuits.

4. Persediaan

4.1. Pemasangan Bateri

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.

1. Pastikan multimeter dimatikan.
2. Cari penutup petak bateri di bahagian belakang unit.
3. Remove the screw(s) securing the cover and carefully lift it off.
4. Connect a new 9V battery to the battery clips, observing correct polarity.
5. Letakkan bateri di dalam petak dan gantikan penutup, selamatkannya dengan skru.

4.2. Menghubungkan Petunjuk Ujian

The multimeter is supplied with a pair of test leads (red and black).

• Masukkan petunjuk ujian hitam ke dalam COM (Bicu input biasa).
• Untuk kebanyakan ukuran (voltage, resistance, low current), insert the petunjuk ujian merah ke dalam VΩmA bicu input.
• For high DC current measurements (up to 10A), insert the petunjuk ujian merah ke dalam 10ADC bicu input.

5. Arahan Operasi

To operate the multimeter, select the desired function and range using the rotary switch.

5.1. Mengukur DC Voltage (DCV)

1. Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. 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.
3. Sambungkan wayar ujian merentasi komponen atau litar yang hendak diukur.
4. Baca voltagnilai e pada paparan LCD.

5.2. Mengukur Vol ACtage (ACV)

1. Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. Set the rotary switch to the desired ACV range (e.g., 200, 750). Start with the highest range if the voltage tidak diketahui.
3. Sambungkan wayar ujian merentasi komponen atau litar yang hendak diukur.
4. Baca voltagnilai e pada paparan LCD.

5.3. Measuring DC Current (DCA)

1. For currents up to 200mA: Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. For currents up to 10A: Insert the red lead into the 10ADC jack and the black lead into the COM jack.
3. 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.
4. Matikan kuasa litar. Open the circuit where the current is to be measured.
5. Sambungkan multimeter secara bersiri dengan litar.
6. Guna kuasa pada litar dan baca nilai semasa pada paparan LCD.

5.4. Mengukur Rintangan (Ω)

1. Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. Set the rotary switch to the desired Resistance (Ω) range (e.g., 200, 2000, 20k, 200k, 2000k).
3. Pastikan litar yang diuji dinyahtenagakan.
4. Sambungkan petunjuk ujian merentasi komponen yang akan diukur.
5. Baca nilai rintangan pada paparan LCD.

5.5. Ujian Kesinambungan Boleh Didengar

1. Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. Set the rotary switch to the continuity symbol (speaker icon).
3. Pastikan litar yang diuji dinyahtenagakan.
4. Sambungkan petunjuk ujian merentasi komponen atau wayar.
5. 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)

1. Insert the red lead into the VΩmA jack and the black lead into the COM jack for diode testing.
2. Set the rotary switch to the diode symbol.
3. Sambungkan plumbum merah ke anod dan plumbum hitam ke katod diod. Paparan akan menunjukkan vol ke hadapantage drop. Reverse the leads; the display should show 'OL' (open loop) for a good diode.
4. 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.
5. Read the hFE value on the LCD display.

6. Penyelenggaraan

6.1. Pembersihan

Lap meter casing 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 battery installation instructions. Replace the 9V battery when the low battery indicator appears on the display to maintain measurement accuracy.

7. Penyelesaian masalah

• Tiada Paparan: Check battery installation and ensure the battery has sufficient charge.
• '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.
• No Continuity Tone: Verify the circuit is de-energized and the leads are making good contact.

8. Spesifikasi

9. Waranti dan Sokongan

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.