Sealey MM19 Digital Multimeter 7 Function User Manual

1. ບົດແນະນຳ

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. ຂໍ້ມູນຄວາມປອດໄພ

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.
• ບໍ່ເຄີຍໃຊ້ voltage to the meter when the rotary switch is set to Resistance (Ω), Diode, Continuity, or Current (A) functions.
• ໃຊ້ຄວາມລະມັດລະວັງໃນເວລາທີ່ເຮັດວຽກກັບ voltagສູງກວ່າ 30V AC RMS, 42V ຈຸດສູງສຸດ, ຫຼື 60V DC. vol ເຫຼົ່ານີ້tages ເຮັດໃຫ້ເກີດອັນຕະລາຍຊ໊ອກ.
• 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.
• ປ່ຽນແບັດເຕີຣີທັນທີ when the low battery indicator appears to ensure accurate readings.

3. ຜະລິດຕະພັນເກີນview

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.

ອົງປະກອບ:

• ຈໍ LCD: Large (46 x 25mm) digital display for reading measurements.
• ສະວິດ Rotary: ໃຊ້ເພື່ອເລືອກຟັງຊັນການວັດແທກ ແລະ ຂອບເຂດທີ່ຕ້ອງການ.
• ຊ່ອງສຽບຂາເຂົ້າ VΩmA: ສໍາລັບ voltage, resistance, and current measurements up to 200mA.
• 10ADC Input Jack: For high current measurements up to 10A DC (unfused).
• COM Input Jack: ການປ້ອນຂໍ້ມູນທົ່ວໄປ (ລົບ) ສຳລັບການວັດແທກທັງໝົດ.
• ເຕົ້າຮັບ hFE: For transistor (NPN/PNP) testing.
• ການທົດສອບນໍາພາ: Red (positive) and Black (negative) leads for connecting to circuits.

4. ຕັ້ງຄ່າ

4.1. ການຕິດຕັ້ງຫມໍ້ໄຟ

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. ກວດໃຫ້ແນ່ໃຈວ່າມັລຕິມິເຕີຖືກປິດໄວ້.
2. ຊອກຫາຝາປິດຊ່ອງໃສ່ຫມໍ້ໄຟຢູ່ດ້ານຫຼັງຂອງໜ່ວຍ.
3. ຖອດສະກູທີ່ຍຶດຝາປິດອອກ ແລະ ຍົກມັນອອກຢ່າງລະມັດລະວັງ.
4. ຕໍ່ແບັດເຕີຣີ 9V ໃໝ່ເຂົ້າກັບຄລິບແບັດເຕີຣີ, ໂດຍສັງເກດເບິ່ງຂົ້ວທີ່ຖືກຕ້ອງ.
5. ໃສ່ແບັດເຕີຣີເຂົ້າໄປໃນຊ່ອງ ແລະ ປິດຝາປິດຄືນ, ໂດຍໃຫ້ສະກູຮັດມັນໄວ້.

4.2. ການເຊື່ອມຕໍ່ນໍາການທົດສອບ

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

• ໃສ່ black test lead ເຂົ້າໄປໃນ COM (ທົ່ວໄປ) jack input.
• ສຳລັບການວັດແທກສ່ວນໃຫຍ່ (voltage, resistance, low current), insert the red test lead ເຂົ້າໄປໃນ VΩmA jack ປ້ອນຂໍ້ມູນ.
• For high DC current measurements (up to 10A), insert the red test lead ເຂົ້າໄປໃນ 10ADC jack ປ້ອນຂໍ້ມູນ.

5. ຄໍາແນະນໍາການດໍາເນີນງານ

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

5.1. ການວັດແທກແຮງດັນໄຟຟ້າ DCtage (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 ແມ່ນບໍ່ຮູ້ຈັກ.
3. ເຊື່ອມຕໍ່ສາຍທົດສອບຜ່ານອົງປະກອບ ຫຼື ວົງຈອນທີ່ຈະວັດແທກ.
4. ອ່ານ voltage ມູນຄ່າຢູ່ໃນຈໍສະແດງຜົນ LCD.

5.2. ການ​ວັດ​ແທກ AC Voltage (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 ແມ່ນບໍ່ຮູ້ຈັກ.
3. ເຊື່ອມຕໍ່ສາຍທົດສອບຜ່ານອົງປະກອບ ຫຼື ວົງຈອນທີ່ຈະວັດແທກ.
4. ອ່ານ voltage ມູນຄ່າຢູ່ໃນຈໍສະແດງຜົນ LCD.

5.3. Measuring DC Current (DCA)

1. ສຳລັບກະແສໄຟຟ້າສູງເຖິງ 200mA: Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. ສຳລັບກະແສໄຟຟ້າສູງເຖິງ 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. ປິດໄຟກັບວົງຈອນ. ເປີດວົງຈອນບ່ອນທີ່ຈະວັດແທກກະແສໄຟຟ້າ.
5. ເຊື່ອມຕໍ່ມັລຕິມີເຕີຕາມຊຸດກັບວົງຈອນ.
6. ນຳໃຊ້ພະລັງງານໃສ່ວົງຈອນ ແລະ ອ່ານຄ່າກະແສໄຟຟ້າຢູ່ໜ້າຈໍ LCD.

5.4. ການວັດແທກຄວາມຕ້ານທານ (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. ເຊື່ອມຕໍ່ຕົວນໍາການທົດສອບໃນທົ່ວອົງປະກອບທີ່ຈະວັດແທກ.
5. ອ່ານຄ່າຄວາມຕ້ານທານໃນຈໍສະແດງຜົນ LCD.

5.5. ການທົດສອບຄວາມຕໍ່ເນື່ອງທີ່ສາມາດຟັງໄດ້

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. ເຊື່ອມຕໍ່ສາຍທົດສອບຜ່ານອົງປະກອບ ຫຼື ສາຍໄຟ.
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. ເຊື່ອມຕໍ່ສາຍສີແດງເຂົ້າກັບຂົ້ວບວກ ແລະ ສາຍສີດຳເຂົ້າກັບຂົ້ວລົບຂອງໄດໂອດ. ໜ້າຈໍສະແດງຜົນຈະສະແດງແຮງດັນໄປໜ້າtagປ່ອຍ e. ປີ້ນສາຍໄຟກັບຄືນ; ຈໍສະແດງຜົນຄວນສະແດງ 'OL' (ວົງແຫວນເປີດ) ສຳລັບໄດໂອດທີ່ດີ.
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. ບໍາລຸງຮັກສາ

6.1. ທໍາຄວາມສະອາດ

ເຊັດແມັດຄasing ກັບການໂຄສະນາamp ຜ້າ ແລະ ຜົງຊັກຟອກອ່ອນໆ. ຢ່າໃຊ້ນໍ້າຢາຂັດ ຫຼື ຕົວລະລາຍ. ໃຫ້ແນ່ໃຈວ່າມິເຕີແຫ້ງໝົດກ່ອນການນຳໃຊ້.

6.2. ການທົດແທນຫມໍ້ໄຟ

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. ການແກ້ໄຂບັນຫາ

• ບໍ່ມີການສະແດງຜົນ: ກວດສອບການຕິດຕັ້ງແບັດເຕີຣີ ແລະ ຮັບປະກັນວ່າແບັດເຕີຣີມີປະຈຸພຽງພໍ.
• 'OL' ຫຼື '1' ໃນໜ້າຈໍ: This usually indicates an over-range condition or an open circuit. Select a higher range or check connections.
• ການອ່ານທີ່ບໍ່ຖືກຕ້ອງ: Ensure the correct function and range are selected. Check test lead connections and battery condition.
• ບໍ່ມີສຽງຕໍ່ເນື່ອງ: Verify the circuit is de-energized and the leads are making good contact.

8. ຂໍ້ມູນຈໍາເພາະ

9. ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ

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.