Mastech MS8260A digitalt multimeter brugermanual

1. Introduktion

This manual provides detailed instructions for the safe and effective operation of the Mastech MS8260A Digital Multimeter. The MS8260A is a versatile instrument designed for various electrical measurements, including AC/DC voltage, AC/DC current, resistance, diode check, continuity test, and transistor check. It also features a non-contact voltage detektionsfunktion.

Key features of the MS8260A include:

• Berøringsfri voltage afsløring
• Automatic power-off function to conserve battery life
• Lavt batteri indikation

2. Sikkerhedsoplysninger

To ensure safe operation and service of the meter, please read all instructions carefully before use. Failure to observe safety warnings can result in electric shock, fire, or damage to the meter.

• Always disconnect test leads from the circuit before changing functions.
• Påfør ikke mere end den nominelle voltage, som markeret på måleren, mellem terminaler eller mellem enhver terminal og jord.
• Vær forsigtig, når du arbejder med voltagover 30V AC RMS, 42V peak eller 60V DC. Disse voluminertages udgør en stødfare.
• Before measuring current, ensure the meter's fuses are intact and the test leads are connected correctly.
• Udskift batteriet med det samme, når indikatoren for lavt batteri vises, for at sikre nøjagtige aflæsninger.
• Brug ikke måleren, hvis den ser beskadiget ud, eller hvis huset er åbent.
• Overhold lokale og nationale sikkerhedsforskrifter.

3. Produktkomponenter

The Mastech MS8260A Digital Multimeter consists of the main unit and essential accessories.

Figur 1: Forside View of Mastech MS8260A Digital Multimeter with Dimensions
This image displays the Mastech MS8260A Digital Multimeter from the front, highlighting its LCD screen, rotary function switch, and input terminals. Key dimensions are indicated: 188mm height, 87mm depth, and 55mm width. The display shows '00.0 mV' and 'Auto Power Off' text. The rotary switch is set to 'mV' range. The input jacks are labeled 'VΩHz', 'mA', and 'COM'.

Figure 2: Mastech MS8260A Digital Multimeter and Accessories
This image shows the Mastech MS8260A Digital Multimeter accompanied by its standard accessories. These include a pair of red and black test leads with protective caps, and a printed user manual. The multimeter itself is shown from the front, similar to the main product view.

3.1 Hovedenhedens funktioner

• LCD-skærm: Viser måleaflæsninger, enheder og funktionsindikatorer.
• Drejekontakt: Selects the desired measurement function and range.
• Indgangsstik: Terminals for connecting test leads (VΩHz, mA, COM).
• HOLD knap: Fryser den aktuelle displayaflæsning.
• Baggrundslys knap: Activates the display backlight for improved visibility in low light.
• Non-Contact Voltage (NCV) Sensor: Registrerer AC voltage uden direkte kontakt.

3.2 Inkluderet tilbehør

• Testledninger (røde og sorte)
• Brugermanual

4. Indledende opsætning

4.1 Batteriinstallation

The Mastech MS8260A Digital Multimeter requires one 9V 6F22 battery for operation. Batteries are not included with the product.

1. Ensure the multimeter is turned off and disconnect any test leads.
2. Find batteridækslet på bagsiden af ​​enheden.
3. Use a screwdriver to remove the screw securing the battery cover.
4. Fjern forsigtigt dækslet.
5. Connect a new 9V 6F22 battery to the battery clips, observing correct polarity.
6. Placer batteriet i rummet.
7. Sæt batterirummets dæksel på igen og fastgør det med skruen.

5. Betjeningsvejledning

Before taking any measurements, ensure the test leads are properly connected to the meter and the circuit under test.

5.1 Tilslutning af testledninger

• Tilslut altid sort test lead to the KOM (fælles) indgangsstik.
• For bdtage, resistance, diode, continuity, and transistor measurements, connect the rød test lead to the VΩHz indgangsstik.
• For current measurements (mA or 20A), connect the rød test lead to the appropriate current input jack (mA or 20A).

5.2 Funktionsvalg

Turn the rotary switch to the desired measurement function and range. The meter will display the reading on the LCD.

5.2.1 DC Voltage Measurement (V–)

1. Indstil drejekontakten til den ønskede DC-volumentage range (e.g., 200mV, 2V, 20V, 200V, 1000V).
2. Tilslut testledningerne parallelt til det kredsløb eller den komponent, der skal måles.
3. Læs bindtage -værdi på displayet.

5.2.2 AC Voltage-måling (V∼)

1. Indstil drejekontakten til den ønskede AC-volumentage range (e.g., 2V, 20V, 200V, 750V).
2. Tilslut testledningerne parallelt med AC-volumentage kilde.
3. Læs bindtage -værdi på displayet.

5.2.3 DC Current Measurement (A–)

1. Set the rotary switch to the desired DC Current range (e.g., 20µA, 200µA, 2mA, 20mA, 200mA, 20A).
2. Vigtig: Disconnect power to the circuit. Break the circuit and connect the meter in series with the load.
3. Sæt strøm til kredsløbet.
4. Aflæs den aktuelle værdi på displayet.

5.2.4 AC Current Measurement (A∼)

1. Set the rotary switch to the desired AC Current range (e.g., 20µA, 200µA, 2mA, 20mA, 200mA, 20A).
2. Vigtig: Disconnect power to the circuit. Break the circuit and connect the meter in series with the load.
3. Sæt strøm til kredsløbet.
4. Aflæs den aktuelle værdi på displayet.

5.2.5 Modstandsmåling (Ω)

1. Set the rotary switch to the desired Resistance range (e.g., 200Ω, 2kΩ, 20kΩ, 200kΩ, 2MΩ, 20MΩ).
2. Sørg for, at kredsløbet er spændingsløst, før du måler modstanden.
3. Tilslut testledningerne på tværs af den komponent, der skal måles.
4. Læs modstandsværdien på displayet.

5.2.6 Diode Test (→|)

1. Set the rotary switch to the Diode Test position.
2. Tilslut den røde testledning til anoden og den sorte testledning til katoden på dioden.
3. Displayet viser den fremadrettede lydstyrketage-fald. Vend ledningerne om; displayet skal vise 'OL' (Open Loop) for en god diode.

5.2.7 Continuity Test (♫)

1. Set the rotary switch to the Continuity Test position.
2. Tilslut testledningerne på tværs af kredsløbet eller komponenten.
3. Hvis modstanden er under cirka 50Ω, lyder summeren, hvilket indikerer kontinuitet.

5.2.8 Transistor Test (hFE)

1. Indstil drejekontakten til hFE-positionen.
2. Insert the transistor's emitter, base, and collector leads into the appropriate sockets on the meter's hFE test socket.
3. The display will show the hFE value (DC current gain).

5.2.9 Non-Contact Voltage (NCV) Detektion

1. Set the rotary switch to the NCV position.
2. Move the top front part of the meter (where the NCV sensor is located) close to the conductor suspected of having AC voltage.
3. Hvis AC voltage greater than 110V is detected, the meter will emit an audible beep and the NCV indicator light will illuminate.

6. Vedligeholdelse

6.1 Rengøring

Tør sagen af ​​med annonceamp klud og mildt rengøringsmiddel. Brug ikke slibemidler eller opløsningsmidler. Sørg for, at måleren er helt tør før brug.

6.2 Udskiftning af batteri

When the low battery indicator appears on the display, replace the 9V 6F22 battery as described in Section 4.1. Prompt battery replacement ensures accurate measurements and proper meter function.

6.3 Udskiftning af sikringer

If the meter fails to measure current, the fuse may be blown. Refer to the specifications for the correct fuse type and rating. Fuse replacement should only be performed by qualified personnel.

7. Fejlfinding

• Ingen visning eller svag visning: Kontroller batteriinstallationen og udskift om nødvendigt.
• Forkerte aflæsninger: Ensure test leads are properly connected, the correct function/range is selected, and the battery is not low.
• No current measurement: Check the fuse. Ensure the meter is connected in series with the circuit.
• 'OL' (Overbelastning) vises: The measured value exceeds the selected range. Select a higher range.

8. Specifikationer

9. Garantioplysninger

Please refer to the warranty card included with your product or contact Mastech customer support for detailed warranty terms and conditions. Warranty coverage typically applies to defects in materials and workmanship under normal use.

10. Kundesupport

For technical assistance, troubleshooting, or service inquiries, please contact Mastech customer support. Refer to the official Mastech webwebstedet eller produktemballagen for de mest aktuelle kontaktoplysninger.

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