Sealey MM20HV Digital Multimeter Instruction Manual

1. Uvod

This manual provides detailed instructions for the safe and effective use of your Sealey MM20HV Digital Multimeter. The MM20HV is a heavy-duty, general-purpose multimeter designed for various electrical measurements, featuring a clear LCD display, data hold function, temperature probe, and diode test facility. It is housed in a rugged rubber boot with an integral stand for durability and convenience.

Molimo vas da prije upotrebe uređaja pažljivo pročitate ovaj priručnik i sačuvate ga za buduću upotrebu.

2. Sigurnosne informacije

Always observe basic safety precautions when using electrical testing equipment to reduce the risk of fire, electric shock, and personal injury.

• Pročitajte upute: Understand all operating instructions and safety warnings before use.
• Pregledajte uređaj: Prije svake upotrebe provjerite multimetar i mjerne kabele ima li oštećenja. Ne koristite ako su oštećeni.
• Proper Range: Uvijek odaberite ispravnu funkciju i raspon za mjerenje.
• Voltage Ograničenja: Do not exceed the maximum input limits specified for each range.
• Strujni krugovi pod naponom: Never measure resistance, continuity, or diode on a live circuit. Ensure power is off and circuits are discharged.
• Izolacija: Keep fingers behind the probe barriers during measurements.
• Okruženje: Do not use the multimeter in wet conditions or in the presence of explosive gases or fumes.
• Servisiranje: Refer all servicing to qualified personnel. Battery and fuse replacement are the only user-serviceable parts.

3. Što je u kutiji

Prilikom raspakiranja provjerite jesu li svi dolje navedeni predmeti prisutni i neoštećeni:

• Sealey MM20HV Digital Multimeter
• Ispitni kabeli (crveni i crni)
• Thermocouple (Temperature Probe)
• Korisnički priručnik (ovaj dokument)

Slika 1: Sealey MM20HV Digital Multimeter shown with included test leads and thermocouple.

4. Postavljanje

4.1. Ugradnja baterije

The Sealey MM20HV requires two AAA batteries for operation.

1. Pronađite poklopac odjeljka za baterije na stražnjoj strani multimetra.
2. Pomoću odvijača odvrnite vijak koji pričvršćuje poklopac.
3. Umetnite dvije AAA baterije, pazeći na ispravan polaritet (+ i -) kako je naznačeno unutar odjeljka.
4. Vratite poklopac odjeljka za baterije i pričvrstite ga vijkom.

4.2. Spajanje mjernih kabela

Proper connection of test leads is essential for accurate and safe measurements.

• Umetnite crni mjerni kabel u "COM" (Common) priključak.
• Za većinu volumenatage, resistance, and continuity measurements, insert the red test lead into the "VΩmA" jack.
• For high current (up to 10A DC) measurements, insert the red test lead into the "10A DC" jack. Ensure the function dial is set to the appropriate current range.

Slika 2: Multimeter with black lead in COM and red lead in VΩmA jack.

5. Upute za rad

The Sealey MM20HV offers 8 functions for various electrical measurements.

5.1. Uključivanje/isključivanje

Rotate the central function dial from the "OFF" position to any desired measurement function to turn the multimeter on. To turn off, rotate the dial back to "OFF".

5.2. Mjerenje istosmjerne strujetage (V=)

1. Insert the black lead into the "COM" jack and the red lead into the "VΩmA" jack.
2. Set the function dial to the desired DC Voltage range (e.g., 200mV, 2V, 20V, 200V, 600V). If the voltagAko je e nepoznato, počnite s najvišim rasponom i smanjite ga po potrebi.
3. Spojite mjerne sonde preko komponente ili strujnog kruga koji se mjeri.
4. Pročitajte svtage vrijednost na LCD zaslonu.

5.3. Mjerenje AC Voltage (V~)

1. Insert the black lead into the "COM" jack and the red lead into the "VΩmA" jack.
2. Set the function dial to the desired AC Voltagraspon (npr. 200 V, 600 V).
3. Spojite ispitne sonde preko AC voltage izvor.
4. Pročitajte svtage vrijednost na LCD zaslonu.

5.4. Measuring DC Current (A=)

Oprez: Nikada ne spajajte multimetar paralelno s voltmetrom.tage source when measuring current. Always connect in series with the load.

1. Insert the black lead into the "COM" jack.
2. For currents up to 200mA, insert the red lead into the "VΩmA" jack. For currents up to 10A, insert the red lead into the "10A DC" jack.
3. Set the function dial to the appropriate DC Current range (e.g., 2mA, 20mA, 200mA, 10A).
4. Otvorite strujni krug u kojem treba mjeriti struju i spojite multimetar serijski.
5. Očitajte trenutnu vrijednost na LCD zaslonu.

5.5. Mjerenje otpora (Ω)

Upozorenje: Prije mjerenja otpora provjerite je li strujni krug bez napona i svi kondenzatori ispražnjeni.

1. Insert the black lead into the "COM" jack and the red lead into the "VΩmA" jack.
2. Set the function dial to the desired Resistance range (e.g., 200Ω, 2kΩ, 20kΩ, 200kΩ, 2MΩ).
3. Connect the test probes across the component whose resistance is to be measured.
4. Očitajte vrijednost otpora na LCD zaslonu.

5.6. Test zvučnog kontinuiteta

This function allows for quick checks of circuit continuity with an audible tone.

1. Insert the black lead into the "COM" jack and the red lead into the "VΩmA" jack.
2. Set the function dial to the continuity symbol (often shared with diode test).
3. Spojite ispitne sonde preko strujnog kruga ili komponente.
4. An audible tone indicates continuity (low resistance). The display will show the resistance value.

5.7. Diode/Transistor Verification

This function allows for testing diodes and transistors.

1. Insert the black lead into the "COM" jack and the red lead into the "VΩmA" jack.
2. Set the function dial to the diode symbol.
3. For diode testing, connect the red probe to the anode and the black probe to the cathode. The display will show the forward voltage drop. Reverse the probes; the display should show "OL" (Open Loop) for a good diode.
4. For transistor (hFE) testing, insert the transistor leads into the appropriate NPN or PNP sockets on the multimeter. The display will show the hFE value.

5.8. Measuring Temperature (°C)

The multimeter includes a thermocouple for temperature measurements.

1. Remove the test leads from the input jacks.
2. Insert the thermocouple plug into the "VΩmA" and "COM" jacks, observing polarity if indicated.
3. Set the function dial to the "°C" range.
4. Place the tip of the thermocouple on or near the object whose temperature is to be measured.
5. Read the temperature value in Celsius on the LCD display.

5.9. Funkcija zadržavanja podataka

Press the "HOLD" button (typically a green button on the front panel) to freeze the current reading on the display. Press it again to release the hold and resume live readings.

6. Održavanje

6.1. Čišćenje

Obrišite kućište oglasomamp krpu i blagi deterdžent. Nemojte koristiti abrazivna sredstva ili otapala. Prije čišćenja provjerite je li uređaj isključen i odvojen od svih strujnih krugova.

6.2. Zamjena baterije

When the battery indicator appears on the display, replace the batteries as described in Section 4.1. Always use fresh AAA batteries.

6.3. Zamjena osigurača

If the current measurement function stops working, the fuse may need replacement.

1. Provjerite je li multimetar isključen i jesu li svi mjerni kabeli odspojeni.
2. Remove the battery compartment cover and batteries.
3. Locate the fuse(s) inside the compartment. The MM20HV typically uses a 200mA/250V fast-blow fuse for the mA range and a 10A/250V fast-blow fuse for the 10A range.
4. Carefully remove the old fuse and replace it with a new fuse of the exact same type and rating.
5. Replace the batteries and battery compartment cover.

Važno: Never use a fuse with a different rating or bypass a fuse. This can damage the multimeter and pose a serious safety hazard.

7. Rješavanje problema

8. Specifikacije

The following table outlines the technical specifications for the Sealey MM20HV Digital Multimeter.

Napomena: Specifikacije se mogu promijeniti bez najave.

9. Jamstvo i podrška

For information regarding warranty coverage, technical support, or service, please refer to the warranty card included with your product or contact Sealey customer service directly. Contact details are typically available on the manufacturer's official webmjesto.