Irfora T58D Digital Multimeter User Manual

1. Informació de seguretat

Please read and understand all safety information before operating this multimeter. Failure to follow these instructions may result in electric shock, fire, or damage to the meter.

• Always ensure the multimeter is in good working condition and that the test leads are not damaged.
• No apliqueu més del volum nominaltage, as marked on the meter, between the terminals or between any terminal and earth ground. The maximum voltage between measurement end and ground is 1000V DC or 750V AC.
• Tingueu molta precaució quan treballeu amb voltages above 60V DC or 30V AC RMS, as these present a shock hazard.
• Desconnecteu sempre els cables de prova del circuit abans de canviar les funcions o els rangs.
• Do not operate the meter if the battery cover is open or not properly secured.
• Replace the batteries as soon as the low battery indicator appears to ensure accurate readings.
• Adhere to the specified pollution grade (Grade 2) and operating environment conditions.

2. Producte acabatview

The Irfora T58D is a 60000 counts digital multimeter designed for accurate measurement of various electrical parameters. It features a large LCD display with backlight, flashlight, NCV (Non-Contact Voltage) detection, and automatic shutdown.

Figura 2.1: Frontal view of the T58D Multimeter with labeled components.

Components clau:

• Pantalla LED: 60000 counts display for readings.
• Il·luminació: Flashlight for dark environments.
• NCV Sensing Area: Per vol sense contactetage detecció.
• NCV and Buzzer Indicator Light: Visual alerts for NCV and continuity.
• Botó MAX MIN: For maximum and minimum value switching.
• Botó PEAK: For peak to peak measurement.
• Botó RANGE: For manual range switching.
• Botó FUNC: For function switching within a rotary switch position.
• Lighting/Backlight Button: Activates display backlight and flashlight.
• AREL HOLD Button: For data hold and relative value measurement.
• Gear Rotary Switch: Selects the primary measurement function.
• Input Sockets: μA mA L, 10A, VΩHz°C, and COM for test lead connections.

Figure 2.2: Physical dimensions of the T58D Multimeter.

3. Configuració

3.1 Instal·lació de la bateria

The T58D multimeter requires three (3) 1.5V AAA batteries (not included) for operation. Ensure the batteries are installed correctly according to polarity markings.

1. Localitzeu el compartiment de la bateria a la part posterior del multímetre.
2. Obriu la tapa de la bateria.
3. Insert three 1.5V AAA batteries, observing the correct polarity (+ and -).
4. Tanqueu la tapa de la bateria amb seguretat.

3.2 Connexió dels cables de prova

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

• Connecteu sempre el cable de prova negre al COM Presa d'entrada (comuna).
• Per a la majoria de volumstage, resistance, frequency, capacitance, and temperature measurements, connect the red test lead to the VΩHz°C presa d'entrada.
• Per a mesures de corrent de fins a 600 mA, connecteu el cable de prova vermell al μA mA L presa d'entrada.
• For current measurements up to 10A, connect the red test lead to the 10A presa d'entrada.

Figure 3.1: Multimeter with support stand and test lead storage.

4. Instruccions de funcionament

Turn the rotary switch to the desired function to begin measurements.

4.1 AC/DC Voltage Mesura

1. Connecteu el cable de prova vermell al VΩHz°C jack and the black test lead to the COM jack.
2. Gireu l'interruptor cap a V~ (Volum AC)tage) o V- (DC Voltage) posició.
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.

4.2 Mesura de corrent AC/DC

To measure current, the multimeter must be connected in series with the circuit. Ensure the circuit is de-energized before connecting the meter.

1. Connecteu el cable de prova negre al COM jack.
2. For current up to 600mA, connect the red test lead to the μA mA L jack. For current up to 10A, connect the red test lead to the 10A jack.
3. Gireu l'interruptor cap a μA mA~ (AC Current), μA mA- (DC Current), A~ (AC Current), or A- (DC Current) position, matching the input jack used.
4. Open the circuit where current is to be measured and connect the test probes in series.
5. Reengegueu el circuit i llegiu el valor del corrent.

4.3 Mesura de la Resistència

1. Connecteu el cable de prova vermell al VΩHz°C jack and the black test lead to the COM jack.
2. Gireu l'interruptor cap a Ω posició.
3. Assegureu-vos que el circuit o component estigui desenergitzat abans de mesurar la resistència.
4. Toqueu les sondes de prova a través del component que s'ha de mesurar.
5. Llegiu el valor de resistència a la pantalla.

4.4 Mesura de la capacitat

1. Connecteu el cable de prova vermell al VΩHz°C jack and the black test lead to the COM jack.
2. Gireu l'interruptor cap a Capacitat position (often shared with Ω or Hz). Use the EMPLEAT button if necessary to select capacitance.
3. Assegureu-vos que el condensador estigui completament descarregat abans de mesurar per evitar danys al mesurador.
4. Toqueu les sondes de prova als terminals del condensador.
5. Llegiu el valor de la capacitat a la pantalla.

4.5 Mesura de la freqüència

1. Connecteu el cable de prova vermell al VΩHz°C jack and the black test lead to the COM jack.
2. Gireu l'interruptor cap a % Hz posició.
3. Touch the test probes to the circuit points where frequency is to be measured.
4. Llegiu el valor de la freqüència a la pantalla.

4.6 Mesura de la temperatura

1. Connecteu el termopar a la VΩHz°C i COM preses, observant la polaritat.
2. Gireu l'interruptor cap a ° C / ° F posició.
3. Col·loqueu la punta del termopar sobre o a prop de l'objecte la temperatura del qual es vol mesurar.
4. Llegiu el valor de la temperatura a la pantalla.

4.7 Prova de díodes

1. Connecteu el cable de prova vermell al VΩHz°C jack and the black test lead to the COM jack.
2. Gireu l'interruptor cap a Díode position (often shared with continuity). Use the EMPLEAT button if necessary.
3. Touch the red probe to the anode and the black probe to the cathode of the diode. A forward voltagEs mostrarà una gota.
4. Reverse the probes. An open circuit (OL) should be displayed for a good diode.

4.8 Buzzer (Continuity) Test

1. Connecteu el cable de prova vermell al VΩHz°C jack and the black test lead to the COM jack.
2. Gireu l'interruptor cap a Zumbador position (often shared with diode). Use the EMPLEAT button if necessary.
3. Touch the test probes to the component or circuit path.
4. If the resistance is below a certain threshold (typically 50Ω), the buzzer will sound, indicating continuity.

4.9 NCV (Volum sense contacte)tage) Prova

La funció NCV permet la detecció del volum de CAtagi sense contacte directe.

1. Gireu l'interruptor rotatiu a la posició NCV posició.
2. Place the top of the meter (NCV sensing area) close to the conductor.
3. Si AC voltage is detected, the corresponding signal strength indicator (low-yellow, high-red) will light up, and the buzzer will emit alarms of varying frequency.

Figure 4.1: NCV Voltage Measurement in progress.

4.10 Retroiluminació i llanterna

Premeu el botó Lighting/Backlight button to activate the display backlight for improved visibility in low-light conditions. Press it again to activate the flashlight located at the top of the meter for illuminating the work area.

Figure 4.2: Backlit screen and flashlight in use.

4.11 Apagat automàtic

To conserve battery life, the multimeter features an automatic shutdown function. If there is no operation for approximately 15 minutes after power-on, the instrument will emit audible prompts and then automatically power off, entering hibernation mode. Any button press will restart the meter.

Figure 4.3: Automatic shutdown after 15 minutes of inactivity.

5. Manteniment

5.1 Neteja

Netegeu el comptador amb anuncisamp drap i detergent suau. No utilitzeu abrasius ni dissolvents.

5.2 Substitució de la bateria

When the low battery indicator appears on the display, replace the batteries promptly to ensure accurate readings and proper operation. Refer to Section 3.1 for battery installation steps.

5.3 Canvi de fusibles

If the current measurement function fails, the fuse may need replacement. Always use fuses of the specified type and rating.

• For mA current measurements, use a fuse rated F 600mA/250V.
• For 10A current measurements, use a fuse rated F 10A/250V.

Fuse replacement should only be performed by qualified personnel. Disconnect all test leads and power before opening the meter casing.

6. Solució De Problemes

If the multimeter does not function correctly, check the following common issues:

• Sense pantalla o pantalla tènue: Check battery level and replace if necessary. Ensure batteries are installed with correct polarity.
• Lectures incorrectes: Verify that the correct function and range are selected. Ensure test leads are properly connected and not damaged. Check for blown fuses if measuring current.
• Es mostra "OL": This indicates an overload or out-of-range measurement. Select a higher range or ensure the measured value is within the meter's capabilities.
• No hi ha bip de continuïtat: Ensure the continuity function is selected and the circuit resistance is below the threshold.

Si els problemes persisteixen, poseu-vos en contacte amb el servei d'atenció al client o amb un tècnic qualificat.

7. Especificacions

The following table details the technical specifications of the Irfora T58D Digital Multimeter.

Figure 7.1: T58D Parameters Table.