Sealey MM19 Digital Multimeter 7 Function User Manual

1. Kirish

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. Xavfsizlik ma'lumotlari

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.
• Hech qachon jildni qo'llamangtage to the meter when the rotary switch is set to Resistance (Ω), Diode, Continuity, or Current (A) functions.
• Vol. bilan ishlashda ehtiyot bo'lingtag30V AC RMS dan yuqori, 42V cho'qqi yoki 60V DC. Bu jildtagzarba xavfini keltirib chiqaradi.
• 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.
• Batareyani darhol almashtiring when the low battery indicator appears to ensure accurate readings.

3. Mahsulot tugadiview

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.

Komponentlar:

• LCD displey: Large (46 x 25mm) digital display for reading measurements.
• Aylanadigan kalit: Kerakli o'lchov funksiyasi va diapazonini tanlash uchun ishlatiladi.
• VΩmA Input Jack: Voltage, resistance, and current measurements up to 200mA.
• 10ADC Input Jack: For high current measurements up to 10A DC (unfused).
• COM kirish ulagichi: Barcha o'lchovlar uchun umumiy (manfiy) kirish.
• hFE rozetkasi: For transistor (NPN/PNP) testing.
• Sinov rahbarlari: Sxemalarga ulanish uchun qizil (ijobiy) va qora (salbiy) simlar.

4. Sozlash

4.1. Batareyani o'rnatish

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. Multimetr o'chirilganligiga ishonch hosil qiling.
2. Qurilmaning orqa tomonidagi batareya bo'limi qopqog'ini toping.
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. Place the battery inside the compartment and replace the cover, securing it with the screw(s).

4.2. Sinov simlarini ulash

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

• ni kiriting black test lead ichiga COM (Umumiy) kirish uyasi.
• Ko'pgina o'lchovlar uchun (jildtage, resistance, low current), insert the red test lead ichiga VŌmA kirish uyasi.
• For high DC current measurements (up to 10A), insert the red test lead ichiga 10ADC kirish uyasi.

5. Foydalanish bo'yicha ko'rsatmalar

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

5.1. DC Volni o'lchashtage (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 noma'lum.
3. Sinov simlarini o'lchanadigan komponent yoki sxema bo'ylab ulang.
4. jildini o'qingtagLCD displeydagi e qiymati.

5.2. AC Vol.ni o'lchashtage (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 noma'lum.
3. Sinov simlarini o'lchanadigan komponent yoki sxema bo'ylab ulang.
4. jildini o'qingtagLCD displeydagi e qiymati.

5.3. Measuring DC Current (DCA)

1. 200 mA gacha bo'lgan toklar uchun: Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. 10A gacha bo'lgan toklar uchun: 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. Zanjirning quvvatini o'chiring. Open the circuit where the current is to be measured.
5. Connect the multimeter in series with the circuit.
6. Apply power to the circuit and read the current value on the LCD display.

5.4. Qarshilikni o'lchash (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. Ensure the circuit under test is de-energized.
4. Sinov simlarini o'lchaydigan komponent bo'ylab ulang.
5. LCD displeydagi qarshilik qiymatini o'qing.

5.5. Ovozli davomiylik testi

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. Ensure the circuit under test is de-energized.
4. Connect the test leads across the component or wire.
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. Connect the red lead to the anode and the black lead to the cathode of the diode. The display will show the forward voltage tomchi. O'tkazgichlarni teskari aylantiring; Yaxshi diyot uchun displeyda "OL" (ochiq pastadir) ko'rinishi kerak.
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. Xizmat ko'rsatish

6.1. Tozalash

Metrni artib oling casing reklama bilanamp mato va yumshoq yuvish vositasi. Aşındırıcılar yoki erituvchilardan foydalanmang. Ishlatishdan oldin hisoblagich to'liq quruqligiga ishonch hosil qiling.

6.2. Batareyani almashtirish

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. Muammolarni bartaraf qilish; nosozliklarni TUZATISH

• Displey yo'q: Batareya o'rnatilishini tekshiring va batareya yetarli zaryadlanganligiga ishonch hosil qiling.
• 'OL' or '1' on Display: This usually indicates an over-range condition or an open circuit. Select a higher range or check connections.
• Noto'g'ri o'qishlar: 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. Texnik shartlar

9. Kafolat va qo'llab-quvvatlash

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.