Sealey MM19 Digital Multimeter 7 Function User Manual

1. Introduktion

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. Sikkerhedsoplysninger

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.

• Overskrid ikke de maksimale inputgrænser for any function. Refer to the specifications section for details.
• Anvend aldrig voltage to the meter when the rotary switch is set to Resistance (Ω), Diode, Continuity, or Current (A) functions.
• Vær forsigtig, når du arbejder med voltagover 30V AC RMS, 42V peak eller 60V DC. Disse voltages udgør en stødfare.
• 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.
• Udskift batteriet med det samme når indikatoren for lavt batteri vises for at sikre nøjagtige aflæsninger.

3. Produktet er slutview

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.

Komponenter:

• LCD-skærm: Large (46 x 25mm) digital display for reading measurements.
• Drejekontakt: Bruges til at vælge den ønskede målefunktion og -område.
• VΩmA Input Jack: For bdtage, resistance, and current measurements up to 200mA.
• 10ADC Input Jack: For high current measurements up to 10A DC (unfused).
• COM-indgangsstik: Fælles (negativ) indgang for alle målinger.
• hFE-stik: For transistor (NPN/PNP) testing.
• Prøveemner: Red (positive) and Black (negative) leads for connecting to circuits.

4. Opsætning

4.1. Batteriinstallation

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. Sørg for, at multimeteret er slukket.
2. Find batteridækslet på bagsiden af ​​enheden.
3. Fjern skruen/skruerne, der fastgør dækslet, og løft det forsigtigt af.
4. Tilslut et nyt 9V-batteri til batteriklemmerne, og sørg for korrekt polaritet.
5. Place the battery inside the compartment and replace the cover, securing it with the screw(s).

4.2. Tilslutning af testledninger

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

• Indsæt sort testledning ind i KOM (Fælles) indgangsstik.
• For de fleste målinger (volumentage, resistance, low current), insert the rød testledning ind i VΩmA indgangsstik.
• For high DC current measurements (up to 10A), insert the rød testledning ind i 10 ADC indgangsstik.

5. Betjeningsvejledning

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

5.1. Måling af DC-volumentage (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 er ukendt.
3. Tilslut testledningerne på tværs af den komponent eller det kredsløb, der skal måles.
4. Læs bindtage -værdi på LCD -displayet.

5.2. Måling af 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 er ukendt.
3. Tilslut testledningerne på tværs af den komponent eller det kredsløb, der skal måles.
4. Læs bindtage -værdi på LCD -displayet.

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. Sluk for strømmen til kredsløbet. Open the circuit where the current is to be measured.
5. Tilslut multimeteret i serie med kredsløbet.
6. Tilslut strøm til kredsløbet, og aflæs strømværdien på LCD-displayet.

5.4. Måling af modstand (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. Sørg for, at det kredsløb, der testes, er spændingsløst.
4. Tilslut testledningerne på tværs af den komponent, der skal måles.
5. Aflæs modstandsværdien på LCD-displayet.

5.5. Hørbar kontinuitetstest

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. Sørg for, at det kredsløb, der testes, er spændingsløst.
4. Tilslut testledningerne på tværs af komponenten eller ledningen.
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-fald. Vend ledningerne om; displayet skal vise 'OL' (åben sløjfe) for en god 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. Vedligeholdelse

6.1. Rensning

Tør måleren c afasing med annonceamp en klud og et mildt rengøringsmiddel. Brug ikke slibemidler eller opløsningsmidler. Sørg for, at måleren er helt tør før brug.

6.2. Udskiftning af batteri

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. Fejlfinding

• Ingen visning: Kontroller batteriinstallationen, og sørg for, at batteriet har tilstrækkelig opladning.
• 'OL' or '1' on Display: This usually indicates an over-range condition or an open circuit. Select a higher range or check connections.
• Forkerte aflæsninger: Ensure the correct function and range are selected. Check test lead connections and battery condition.
• Ingen kontinuitetstone: Verify the circuit is de-energized and the leads are making good contact.

8. Specifikationer

9. Garanti og support

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.