Mastech MS850D digitalt multimeter brugermanual

1. Produktet er slutview

The Mastech MS850D is a 6000-count True RMS auto-ranging digital multimeter designed for precise electrical measurements. It is suitable for professionals, technicians, and enthusiasts, offering a wide range of functions for various electrical applications.

Figur 1: Forside view of the Mastech MS850D Digital Multimeter, displaying a measurement of 198.7 mV.

Nøglefunktioner:

• 6000 Counts Auto Ranging: Provides precise measurements across various ranges automatically.
• Ægte RMS: Ensures accurate readings for non-sinusoidal AC waveforms.
• Omfattende målefunktioner: Mål AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, and Temperature.
• Sikkerhedscertificeret: CAT III 600V rating for safe use in electrical testing environments.
• Brugervenlige funktioner: Includes Buzzer/Continuity, Diode Test, Transistor Test (optional), MAX/MIN, REL, Non-Contact Voltage (NCV) Detection, Live Wire Recognition, Data Hold, Flashlight, and Auto Power Off.
• Kompakt design: Ergonomic dimensions (150mm x 75mm x 47mm) and lightweight (284g) for easy handling.

2. Pakkens indhold

Bekræft, at alle nedenstående varer er inkluderet i din pakke:

• 1 x Mastech MS850D-6000 Counts True RMS Auto Ranging Digital Multimeter
• 1 x Temperature probe
• 1 x Pair of Test leads
• 2 x Batteries (AAA type, 1.5V)
• 1 x brugermanual

3. Sikkerhedsoplysninger

ADVARSEL: To avoid electric shock or personal injury, read all safety information before using this product. Use the multimeter only as specified in this manual; otherwise, the protection provided by the multimeter may be impaired.

• Sørg altid for, at multimeteret er i god stand inden brug.
• Påfør ikke mere end den nominelle voltage, as marked on the multimeter, between the terminals or between any terminal and earth ground. The MS850D is rated for KAT III 600V.
• Vær forsigtig, når du arbejder med voltagover 30V AC RMS, 42V peak eller 60V DC. Disse voluminertages udgør en stødfare.
• Do not use the multimeter if the test leads are damaged or if the meter appears damaged.
• Ensure the rotary switch is in the correct position for the measurement you intend to make.
• Tilslut aldrig testledningerne til en voltage source when the rotary switch is set to current, resistance, or continuity mode.
• Replace the battery and fuses only with the specified type and rating.
• Brug ikke multimeteret i eksplosive gas-, damp- eller støvede omgivelser.
• Hold fingrene bag fingerbeskytterne på testproberne under målingerne.

4. Opsætning

4.1 Batteriinstallation

The MS850D multimeter requires two 1.5V AAA batteries for operation. To install or replace batteries:

1. Ensure the multimeter is powered off and disconnect all test leads.
2. Find batteridækslet på bagsiden af ​​multimeteret.
3. Brug en skruetrækker til at løsne skruen, der fastgør batteridækslet.
4. Remove the cover and insert the two AAA batteries, observing the correct polarity (+ and -).
5. Sæt batteridækslet på igen, og stram skruen.

Figur 2: Bagside view of the multimeter, illustrating the battery compartment and safety warnings.

4.2 Tilslutning af testledninger

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

1. Indsæt den sorte testledning i KOM (Common) input jack.
2. For de fleste volumenertage, resistance, continuity, capacitance, frequency, and temperature measurements, insert the red test lead into the VΩmA indgangsstik.
3. For strømmålinger op til 600mA, sæt den røde testledning i VΩmA indgangsstik.
4. For current measurements between 600mA and 10A, insert the red test lead into the 10A MAKS indgangsstik.

Figur 3: Vinklet view of the multimeter, highlighting the input jacks for test leads.

5. Betjeningsvejledning

This section details how to use the Mastech MS850D for various measurements.

5.1 Tænd/sluk

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

5.2 Rotary Switch Functions

The rotary switch selects the primary measurement function:

• V~ (AC Voltage): Measures alternating current voltage.
• V- (DC Voltage): Measures direct current voltage.
• Hz/% (Frequency/Duty Cycle): Måler frekvens og duty cycle.
• Ω (Resistance): Måler elektrisk modstand.
• Continuity/Diode: Checks for circuit continuity and tests diodes.
• NCV/Live: Non-Contact Voltage detection and Live Wire recognition.
• °C/°F (Temperature): Measures temperature using the included probe.
• hFE (Transistor Test): Measures transistor gain (requires optional socket).
• μA~ / μA- (AC/DC Microamperes): Measures microamper aktuelle.
• mA~ / mA- (AC/DC Milliamperes): Measures milliamper aktuelle.
• A~ / A- (AC/DC Amperes): Foranstaltninger ampere current (up to 10A).

5.3 Knapfunktioner

• VÆLG (Vælg): Toggles between different functions within a single rotary switch position (e.g., AC/DC voltage, continuity/diode, °C/°F).
• HOLDE: Fryser den aktuelle aflæsning på displayet. Tryk igen for at slippe.
• MIN/MAX/REL:
  • Press once to enter MIN/MAX mode. The multimeter will record the minimum and maximum values. Press again to cycle between MIN, MAX, and current reading.
  • Long press to activate REL (Relative) mode. This subtracts the current reading from all subsequent readings, useful for measuring changes.
• Flashlight Button (often combined with backlight): Activates the built-in flashlight for illuminating the measurement area.

5.4 Specific Measurement Procedures

5.4.1 bindtage-måling (AC/DC)

1. Indstil drejekontakten til V~ for AC voltage eller V- for DC voltage. Use the SEL button to switch between AC and DC if the position combines them.
2. Tilslut den sorte testledning til KOM jack and the red test lead to the VΩmA stik.
3. Connect the test probes in parallel across the circuit or component to be measured.
4. Læs bindtage -værdi på displayet.

5.4.2 Strømmåling (AC/DC)

FORSIGTIGHED: Never connect the multimeter in parallel with a voltage source when measuring current. Always connect in series with the load.

1. Determine if the current is AC or DC.
2. Set the rotary switch to the appropriate current range (μA, mA, or A). Use the SEL button to switch between AC and DC.
3. Tilslut den sorte testledning til KOM stik.
4. For strømstyrker op til 600 mA, tilslut den røde testledning til VΩmA jack. For currents up to 10A, connect the red test lead to the 10A MAKS stik.
5. Open the circuit where the current is to be measured and connect the multimeter in series.
6. Aflæs den aktuelle værdi på displayet.

5.4.3 Modstandsmåling

1. Sæt drejekontakten til Ω position.
2. Tilslut den sorte testledning til KOM jack and the red test lead to the VΩmA stik.
3. Sørg for, at kredsløbet eller komponenten er spændingsløs, før du måler modstanden.
4. Tilslut testproberne på tværs af komponenten.
5. Læs modstandsværdien på displayet.

5.4.4 Kontinuitetstest

1. Sæt drejekontakten til Continuity/Diode position. Use SEL to select continuity mode (usually indicated by a speaker icon).
2. Tilslut den sorte testledning til KOM jack and the red test lead to the VΩmA stik.
3. Tilslut testproberne på tværs af kredsløbet eller komponenten.
4. If the resistance is below approximately 50Ω, the buzzer will sound, indicating continuity.

5.4.5 Diodetest

1. Sæt drejekontakten til Continuity/Diode position. Use SEL to select diode mode (usually indicated by a diode symbol).
2. Tilslut den sorte testledning til KOM jack and the red test lead to the VΩmA stik.
3. Tilslut den røde probe til anoden og den sorte probe til katoden på dioden. Displayet vil vise den fremadrettede lydstyrke.tage drop.
4. Reverse the probes. The display should show "OL" (Open Loop) for a good diode.

5.4.6 Kapacitansmåling

1. Sæt drejekontakten til Kapacitans position (often combined with Hz/% or other functions, use SEL to select).
2. Tilslut den sorte testledning til KOM jack and the red test lead to the VΩmA stik.
3. Ensure the capacitor is fully discharged before measurement to prevent damage to the multimeter.
4. Connect the test probes across the capacitor terminals.
5. Læs kapacitansværdien på displayet.

5.4.7 Frekvensmåling

1. Sæt drejekontakten til Hz /% position. Use SEL to select frequency mode.
2. Tilslut den sorte testledning til KOM jack and the red test lead to the VΩmA stik.
3. Tilslut testproberne på tværs af signalkilden.
4. Aflæs frekvensværdien på displayet.

5.4.8 Temperaturmåling

1. Sæt drejekontakten til ° C / ° F position. Use SEL to switch between Celsius and Fahrenheit.
2. Connect the temperature probe to the KOM og VΩmA jacks, observing polarity if specified by the probe.
3. Placer spidsen af ​​temperatursonden på eller i nærheden af ​​det objekt, hvis temperatur skal måles.
4. Aflæs temperaturværdien på displayet.

5.4.9 Non-Contact Voltage (NCV) Detektion

1. Sæt drejekontakten til NCV/Live position.
2. Move the top front part of the multimeter close to the conductor or outlet.
3. The multimeter will emit an audible beep and the NCV indicator light will flash if AC voltage is detected, with the frequency of beeps and flashes increasing with voltage strength.

6. Vedligeholdelse

Korrekt vedligeholdelse sikrer multimeterets levetid og nøjagtighed.

6.1 Rengøring

• Tør sagen af ​​med annonceamp klud og mildt rengøringsmiddel. Brug ikke slibemidler eller opløsningsmidler.
• Keep the input terminals free of dirt and moisture.

6.2 Udskiftning af batteri

Refer to Section 4.1 for detailed instructions on battery replacement. Replace batteries when the low battery indicator appears on the display.

6.3 Udskiftning af sikringer

If the current measurement function fails, the fuse may need replacement. The MS850D uses two fuses:

• F1: F300mA/250V (for mA/μA range)
• F2: F10A/250V (for 10A range)

To replace fuses:

1. Ensure the multimeter is powered off and disconnect all test leads.
2. Open the battery compartment cover (refer to Section 4.1).
3. Carefully remove the old fuse(s) and replace with new fuses of the exact same type and rating.
4. Sæt batteridækslet på igen, og stram skruen.

7. Fejlfinding

If you encounter issues with your Mastech MS850D, refer to the following common problems and solutions:

8. Specifikationer

Detailed technical specifications for the Mastech MS850D Digital Multimeter:

Figure 4: Detailed specifications and packaging information for the Mastech MS850D.

9. Garanti og support

The Mastech MS850D Digital Multimeter is manufactured by Mastech and imported by REES52. For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or contact the seller/manufacturer directly.

Gem venligst dit købsbevis for garantikrav.

• Fabrikant: matech
• Importør: REES52
• Modelnummer: MS850D