Ìwé Ìtọ́ni fún Onímílíọ̀mù Oní-nọ́mbà Sealey MM20HV

1. Ifihan

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.

Jọwọ ka iwe afọwọkọ yii daradara ṣaaju ṣiṣiṣẹ ẹrọ naa ki o da duro fun itọkasi ọjọ iwaju.

2. Alaye Aabo

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

• Ka Awọn ilana: Mọ gbogbo awọn ilana iṣiṣẹ ati awọn ikilọ ailewu ṣaaju lilo.
• Ṣayẹwo Ẹrọ: Before each use, inspect the multimeter and test leads for any damage. Do not use if damaged.
• Proper Range: Always select the correct function and range for the measurement.
• Voltage Awọn ifilelẹ: Do not exceed the maximum input limits specified for each range.
• Live Circuits: Never measure resistance, continuity, or diode on a live circuit. Ensure power is off and circuits are discharged.
• Idabobo: Keep fingers behind the probe barriers during measurements.
• Ayika: Do not use the multimeter in wet conditions or in the presence of explosive gases or fumes.
• Ṣiṣẹ: Refer all servicing to qualified personnel. Battery and fuse replacement are the only user-serviceable parts.

3. Ohun ti o wa ninu Apoti

Nígbà tí o bá ń tú àwọn ohun èlò tí a kọ sí ìsàlẹ̀, rí i dájú pé gbogbo àwọn ohun tí a kọ sí ìsàlẹ̀ yìí wà níbẹ̀ tí wọn kò sì bàjẹ́:

• Sealey MM20HV Digital Multimeter
• Awọn itọsọna Idanwo (Pupa ati Dudu)
• Thermocouple (Temperature Probe)
• Afowoyi Olumulo (iwe-ipamọ yii)

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

4. Eto

4.1. Fifi sori batiri

The Sealey MM20HV requires two AAA batteries for operation.

1. Wa ideri apo batiri naa ni ẹhin multimeter naa.
2. Lo screwdriver lati yọ skru ti o ni aabo ideri naa.
3. Insert two AAA batteries, observing the correct polarity (+ and -) as indicated inside the compartment.
4. Rọpo ideri kompaktimenti batiri ki o ni aabo pẹlu dabaru.

4.2. Nsopọ Awọn itọsọna Igbeyewo

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

• Fi okun idanwo dudu sinu jaketi "COM" (Common).
• Fún ọ̀pọ̀lọpọ̀ ìpeletage, 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.

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

5. Awọn ilana Iṣiṣẹ

The Sealey MM20HV offers 8 functions for various electrical measurements.

5.1. Agbara Tan / Paa

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. Measuring DC 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 DC Voltage range (e.g., 200mV, 2V, 20V, 200V, 600V). If the voltage is unknown, start with the highest range and decrease as necessary.
3. So àwọn ìwádìí ìdánwò pọ̀ mọ́ ara wọn lórí ohun èlò tàbí àyíká tí a fẹ́ wọ̀n.
4. Ka voltage iye lori ifihan LCD.

5.3. Wiwọn 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 Voltage range (e.g., 200V, 600V).
3. Connect the test probes across the AC voltage orisun.
4. Ka voltage iye lori ifihan LCD.

5.4. Measuring DC Current (A=)

Iṣọra: Má ṣe so multimeter pọ̀ mọ́ vol ní ìfẹ̀sẹ̀tẹ̀sẹ̀ pẹ̀lú voltage 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. Ṣí àyíká ibi tí a fẹ́ wọn ìsanwó náà kí o sì so multimeter náà pọ̀ ní ìtẹ̀léra.
5. Ka awọn ti isiyi iye lori LCD àpapọ.

5.5. Measuring Resistance (Ω)

Ikilọ: Rí i dájú pé agbára ìṣiṣẹ́ náà ti dínkù, àti pé gbogbo àwọn capacitors ti tú jáde kí wọ́n tó wọn resistance.

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. Ka iye resistance lori ifihan LCD.

5.6. Igbeyewo Ilọsiwaju Ngbohun

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. So àwọn ìwádìí ìdánwò pọ̀ mọ́ ara wọn ní gbogbo àyíká tàbí ẹ̀yà ara wọn.
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 voltagìsàlẹ̀. Yí àwọn ìwádìí padà; ìfihàn náà yẹ kí ó fi "OL" (Ṣíṣí Loop) hàn fún diode tó dára.
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. Data Hold Function

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. Itọju

6.1. Ninu

Pa ọran naa pẹlu ipolowoamp cloth and mild detergent. Do not use abrasives or solvents. Ensure the device is off and disconnected from any circuits before cleaning.

6.2. Batiri Rirọpo

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

6.3. Rirọpo fiusi

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

1. Ensure the multimeter is turned off and all test leads are disconnected.
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.

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

7. Laasigbotitusita

8. Awọn pato

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

Akiyesi: Awọn alaye ni o wa labẹ iyipada laisi akiyesi.

9. Atilẹyin ọja ati Support

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 webojula.