Sealey MM19 Digital Multimeter 7 Function User Manual

1. Folasaga

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. Fa'amatalaga Saogalemu

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.
• Aua lava nei fa'aaoga voltage to the meter when the rotary switch is set to Resistance (Ω), Diode, Continuity, or Current (A) functions.
• Fa'aeteete pe a galue ma voltages above 30V AC RMS, 42V peak, or 60V DC. O nei voltage tula'i mai se lamatiaga te'i.
• 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.
• Toe sui vave le maa when the low battery indicator appears to ensure accurate readings.

3. Oloa Ua Ovaview

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.

Vaega:

• Fa'aaliga LCD: Large (46 x 25mm) digital display for reading measurements.
• Suiga Rotary: Fa'aaoga e filifili ai le fua fa'atatau ma le lautele.
• Soka Fa'aofi VΩmA: Mo voltage, resistance, and current measurements up to 200mA.
• 10ADC Input Jack: For high current measurements up to 10A DC (unfused).
• COM Input Jack: Common (negative) input for all measurements.
• Soketi hFE: For transistor (NPN/PNP) testing.
• Su'ega Ta'ita'i: Red (positive) and Black (negative) leads for connecting to circuits.

4. Seti

4.1. Fa'apipi'i ma'a

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. Ia mautinoa ua tape le multimeter.
2. Su'e le tapuni o le maa i tua o le iunite.
3. Remove the screw(s) securing the cover and carefully lift it off.
4. Fa'afeso'ota'i se maa fou 9V i fa'amau o le maa, ia matau le sa'o o le polarity.
5. Place the battery inside the compartment and replace the cover, securing it with the screw(s).

4.2. Feso'ota'i Su'ega Ta'ita'i

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

• Faaofi le uaea uliuli mo le su'ega i totonu o le COM Uaea ulufale (masani).
• Mo le tele o fua (voltage, resistance, low current), insert the uaea su'ega mumu i totonu o le VΩmA jack fa'aoga.
• For high DC current measurements (up to 10A), insert the uaea su'ega mumu i totonu o le 10TLM jack fa'aoga.

5. Fa'atonuga o Galuega

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

5.1. Fuaina DC Voltagu (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 le iloa.
3. Fa'afeso'ota'i uaea e su'e ai i luga o le vaega po'o le matagaluega o le a fuaina.
4. Faitau le voltage taua ile fa'aaliga LCD.

5.2. Fuaina AC Voltagu (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 le iloa.
3. Fa'afeso'ota'i uaea e su'e ai i luga o le vaega po'o le matagaluega o le a fuaina.
4. Faitau le voltage taua ile fa'aaliga 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. Tape le eletise i le matagaluega. Open the circuit where the current is to be measured.
5. Fa'afeso'ota'i fa'asolosolo le multimeter ma le matagaluega.
6. Fa'aaoga le eletise i le matagaluega ma faitau le tau o lo'o iai nei i luga o le fa'aaliga LCD.

5.4. Fua o le Tete'e (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. Ia mautinoa ua tape le eletise o le matagaluega o loʻo suʻeina.
4. Fa'afeso'ota'i ta'ita'i su'ega i luga o le vaega e fuaina.
5. Faitau le tau o le tete'e i luga o le laupepa LCD.

5.5. Su'ega Fa'aauau Fa'alogo

1. Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. Seti le ki vili i le faailoga o le continuity (faailoga o le sipika).
3. Ia mautinoa ua tape le eletise o le matagaluega o loʻo suʻeina.
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. Seti le ki vilivili i le faʻailoga o le diode.
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 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. Faitau le tau o le hFE i luga o le laupepa LCD.

6. Tausiga

6.1. Fa'amamaina

Solo le mita casing ma fa'asalalaugaamp ie ma se vailaʻau fasimoli mālū. Aua le faʻaaogaina ni mea faʻamama poʻo ni vailaʻau faʻamama. Ia mautinoa ua mago atoa le mita aʻo leʻi faʻaaogaina.

6.2. Suiga maa

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. Faʻafitauli

• Leai se fa'aaliga: 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.
• Faitauga Sese: 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. Fa'amatalaga

9. Fa'amaonia ma Lagolago

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.