Manual d'usuari del multímetre digital industrial de rang automàtic i manual Fluke 77-4 de 1000 V CAT III

1. Acabatview

The Fluke 77-4 Digital Multimeter is a robust and reliable tool designed for industrial electrical troubleshooting. It offers essential measurement capabilities with enhanced safety features, including a CAT III 1000V rating. This manual provides instructions for safe and effective use, setup, operation, and maintenance of your Fluke 77-4 multimeter.

2. Informació de seguretat

Always adhere to safety precautions when using any electrical test equipment. Failure to do so may result in injury or damage to the multimeter or equipment under test.

• Rated for CAT III 1000V: This multimeter is designed for measurements in distribution-level electrical installations, including main feeders and branch circuits. Do not exceed the specified voltage qualificacions.
• Inspect Test Leads: Before each use, inspect test leads for damaged insulation or exposed metal. Replace damaged leads immediately.
• No opereu en condicions humides: Avoid using the multimeter in damp o ambients humits.
• Use Proper Terminals: Always connect test leads to the correct input terminals for the desired measurement.
• Comproveu els fusibles: Ensure fuses are correctly rated and installed before measuring current.
• Aïllar l'energia: Whenever possible, de-energize circuits before making connections.

3. Característiques del producte

The Fluke 77-4 Multimeter includes the following key features:

• Pantalla digital gran: Proporciona resultats de mesurament clars i fàcils de llegir.
• Il·luminació de fons de pantalla: Millora la visibilitat en entorns amb poca llum.
• Enregistrament mínim/màxim: Captures minimum and maximum readings to detect signal fluctuations.
• Rang automàtic i manual: Allows for automatic range selection or manual override for specific measurement needs.
• Vol. Amplitage Interval de mesura: Capable of measuring DC Voltage from 6V to 1000V and AC Voltage from 600mV to 1000V.
• Grau industrial: Designed for demanding industrial applications.
• Construcció duradora: Manufactured in Taiwan for reliable performance.

4. Components i controls

Familiarize yourself with the various parts of your Fluke 77-4 Multimeter:

Figura 1: Frontal view of the Fluke 77-4 Digital Multimeter.

Aquesta imatge mostra la part frontal view of the Fluke 77-4 Digital Multimeter. The large green backlit LCD shows '1000 V AC' with 'Auto Range' indicated below. Below the display are buttons for HOLD, MINMAX, and RANGE. The central rotary dial is set to the AC Voltage (V~) position. Input jacks for 400mA, 10A, VΩHz, and COM are visible at the bottom.

1. Visualització: Large LCD for showing measurement values, units, and function indicators.
2. Botó de retroil·luminació: Activa o desactiva la retroiluminació de la pantalla.
3. Botó HOLD: Congela la lectura actual de la pantalla.
4. MINMAX Button: Records the minimum, maximum, and average readings over time.
5. Botó RANGE: Alterna entre els modes de rang automàtic i de rang manual.
6. Rotary Function Dial: Selects the desired measurement function (e.g., V AC, V DC, Ohms, Amps).
7. Preses d'entrada:
   • VΩHz: Entrada positiva per al volumtagmesures de e, resistència i freqüència.
   • mA: Entrada per a mil·ligramsampmesures de corrent ere (fusibles).
   • 10A: Input for high current measurements up to 10 Amperes (fused).
   • COM: Entrada comuna (negativa) per a totes les mesures.

5. Configuració

5.1. Instal·lació de la bateria

The Fluke 77-4 is powered by a 9V battery. To install or replace the battery:

1. Assegureu-vos que el multímetre estigui APAGAT.
2. Locate the battery compartment cover on the rear of the multimeter.
3. Feu servir un tornavís per afluixar el(s) cargol(s) que fixen la coberta.
4. Remove the cover and insert a new 9V battery, observing correct polarity.
5. Torneu a col·locar la tapa i estrenyeu el(s) cargol(s).

5.2. Connexió dels cables de prova

Always connect the black test lead to the COM jack. Connect the red test lead to the appropriate input jack for your measurement:

• VΩHz: Per al voltage, resistance, continuity, diode, and frequency measurements.
• mA: Per a mesures de corrent de fins a 400 mA.
• 10A: Per a mesures de corrent fins a 10A.

6. Instruccions de funcionament

Before taking any measurement, ensure the test leads are correctly connected and the function dial is set to the appropriate position.

6.1. Mesura de vol AC/DCtage

1. Turn the rotary dial to V~ (AC Voltage) or V (DC Voltagi).
2. Connecteu el cable de prova negre a la presa COM i el cable de prova vermell a la presa VΩHz.
3. Toqueu les sondes de prova als punts del circuit on el volumtage s'ha de mesurar.
4. Llegeix el voltage valor a la pantalla.

6.2. Measuring Resistance (Ohms)

1. Assegureu-vos que el circuit estigui desenergitzat abans de mesurar la resistència.
2. Turn the rotary dial to Ω.
3. Connecteu el cable de prova negre a la presa COM i el cable de prova vermell a la presa VΩHz.
4. Touch the test probes across the component or circuit segment.
5. Llegiu el valor de resistència a la pantalla.

6.3. Measuring Current (Amperes)

Precaució: Current measurements require breaking the circuit and inserting the multimeter in series. Incorrect connection can blow the fuse or damage the meter.

1. Desenergitzar el circuit.
2. Determine the expected current range. For currents up to 400mA, turn the dial to mA and connect the red lead to the mA jack. For currents up to 10A, turn the dial to A and connect the red lead to the 10A jack.
3. Connecteu el cable de prova negre a la presa COM.
4. Break the circuit and connect the test probes in series with the load.
5. Reengegueu el circuit i llegiu el valor del corrent.
6. De-energize the circuit before disconnecting the multimeter.

6.4. Using HOLD, MINMAX, and RANGE Functions

• MANTENIR: Premeu el botó HOLD per congelar la lectura actual a la pantalla. Premeu-lo de nou per alliberar-la.
• MINMAX: Press the MINMAX button to activate recording. The meter will display the maximum, minimum, and average readings sequentially. Press again to cycle through Min, Max, Avg. Hold the button to exit.
• GAMMA: In auto-ranging modes, the meter automatically selects the best range. Press RANGE to switch to manual ranging. Each subsequent press will cycle through available ranges. Hold the button to return to auto-ranging.

7. Manteniment

7.1. Neteja

Netegeu el cas amb l'anunciamp cloth and mild detergent. Do not use abrasives or solvents. Ensure the multimeter is dry before use.

7.2. Substitució de la bateria

Refer to Section 5.1 for battery installation instructions. Replace the battery when the low battery indicator appears on the display.

7.3. Substitució de fusibles

If the multimeter fails to measure current, the fuse may be blown. Refer to the multimeter's internal diagram or contact Fluke support for correct fuse specifications and replacement procedures. Always use fuses with the specified voltage i qualificacions actuals.

8. Solució De Problemes

9. Especificacions

10. Informació de la garantia

Specific warranty terms for the Fluke 77-4 Digital Multimeter are typically provided with the product at the time of purchase or can be found on the official Fluke website. Please refer to your product documentation or the manufacturer's weblloc web per obtenir informació detallada sobre la cobertura de la garantia i el registre.

11. Atenció al client

For technical assistance, service, or repair, please contact Fluke customer support. You can find contact information and additional resources on the official Fluke website. When contacting support, please have your product model number (77-4) and serial number (if applicable) ready.

Fluke Weblloc: www.fluke.com