Velleman DVM810 Digital Multimeter User Manual

1. Fampidirana

The Velleman DVM810 is a compact and economical 3 1/2 digit digital multimeter designed for measuring DC and AC voltages, DC currents, resistance, and for performing diode and transistor (hFE) tests. It features overload protection and automatic polarity indication, making it suitable for hobbyists, field use, and workshops. This manual provides essential information for the safe and effective operation of your DVM810 multimeter.

2. Toetran'ny vokatra

• Automatic polarity indication
• BOKYtage measurements: AC 500V and DC 500V maximum
• Current measurements: DC 10A maximum (0.2A fused, 10A unfused)
• Resistance measurements: Up to 2MΩ
• Diode and transistor (hFE) test functions
• Fiarovana be loatra
• Compact design with 3 1/2 digit LCD display

3. Ny votoatin'ny fonosana

Azafady, jereo ny votoatin'ny fonosana mba hahazoana antoka fa misy ny entana rehetra:

• Velleman DVM810 Digital Multimeter
• Tariby fitsapana (mena iray, mainty iray)
• Boky torolalana

4. Fampahalalana manan-danja momba ny fiarovana

Read all safety warnings and instructions carefully before using this product. Failure to follow these instructions may result in electric shock, fire, or serious injury.

• Always ensure the multimeter is set to the correct function and range before making any measurements.
• Never exceed the maximum input limits for any range. The maximum voltage for AC/DC is 500V.
• Do not attempt to measure current on circuits with voltagmihoatra ny 250V.
• Inspect test leads for damaged insulation or exposed metal before each use. Replace damaged leads immediately.
• Do not use the multimeter if it appears damaged or if the case is open.
• Exercise extreme caution when working with live circuits. Use appropriate personal protective equipment.
• Always disconnect power to the circuit and discharge high-voltage capacitors before measuring resistance or performing diode/transistor tests.
• Replace the battery when the low battery indicator appears on the display to ensure accurate readings.

5. Vokatra mihoatraview

Familiarize yourself with the components of your Velleman DVM810 multimeter:

Figure 1: Velleman DVM810 Digital Multimeter. This image displays the front view of the compact multimeter, highlighting its liquid crystal display (LCD), the central rotary function switch, and the input jacks for test leads at the bottom.

• LCD Display: Shows measurement readings, units, and polarity.
• Rotary Switch: Ampiasaina hisafidianana ny fiasa sy ny elanelana fandrefesana tianao.
• Input Jacks:
• COM Jack: Common (negative) input for all measurements. Connect the black test lead here.
• Jack VΩmA: Fidirana tsara ho an'ny voltage, resistance, and current measurements up to 200mA. Connect the red test lead here.
• Jack 10A: Positive input for high current measurements (up to 10A). Connect the red test lead here for 10A measurements.
• Fitarihana fitsapana: Red and black leads used to connect the multimeter to the circuit under test.

6. Fametrahana

6.1 Fametrahana bateria

The DVM810 multimeter requires a 9V battery (not always included). To install or replace the battery:

1. Ensure the multimeter is turned OFF (rotary switch set to OFF).
2. Tadiavo ny fonon'ny efitrefitra bateria ao ambadiky ny fitaovana.
3. Esory ny visy mihazona ny fonony ary esory moramora.
4. Ampifandraiso amin'ny "clip"-n'ny bateria ny bateria 9V vaovao, ary araho tsara ny polarité-ny.
5. Apetraho ao anaty fitoeran-javatra ny bateria ary avereno apetraka ny fonony, ary hamafiso amin'ny visy.

6.2 Fampifandraisana ireo mpitarika fitsapana

Always connect the test leads correctly for accurate and safe measurements:

1. Ampidiro ao amin'ny fr (common) jack.
2. Ho an'ny ankamaroan'ny fandrefesana (voltage, resistance, diode, hFE, and current up to 200mA), insert the red test lead into the VΩmA jack.
3. Ho an'ny fandrefesana herinaratra avo lenta (hatramin'ny 10A), ampidiro ao anaty tariby fitsapana mena ny 10A jack.

7. Torolàlana miasa

Before making any measurement, ensure the test leads are correctly connected and the rotary switch is set to the appropriate function and range.

7.1 Fandrefesana DC Voltage (V=)

1. Ampidiro ao anaty lovia ny lovia mena VΩmA jack and the black lead into the fr jack.
2. Apetraho amin'ny DC Volt tianao ny switch rotarytage (V=) range. Start with the highest range if the voltage tsy fantatra.
3. Connect the test leads across the component or circuit to be measured (in parallel).
4. Vakio ny voltage value on the LCD display. The display will show the correct polarity.

7.2 Fandrefesana AC Voltage (V~)

1. Ampidiro ao anaty lovia ny lovia mena VΩmA jack and the black lead into the fr jack.
2. Apetraho amin'ny AC Volt tianao ny switch rotarytage (V~) range. Start with the highest range if the voltage tsy fantatra.
3. Connect the test leads across the component or circuit to be measured (in parallel).
4. Vakio ny voltage sanda eo amin'ny efijery LCD.

7.3 Measuring DC Current (A=)

Caution: Never connect the multimeter in parallel with a voltage source when measuring current, as this can blow the fuse or damage the meter.

1. Determine the expected current. 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 jack. Always insert the black lead into the fr jack.
2. Set the rotary switch to the appropriate DC Current (A=) range. Start with the highest range if the current is unknown.
3. Turn off power to the circuit. Open the circuit where the current is to be measured.
4. Ampifandraiso amin'ny circuit ny multimeter amin'ny alalan'ny "series".
5. Restore power to the circuit and read the current value on the LCD display.

7.4 Fandrefesana ny fanoherana (Ω)

Caution: Ensure the circuit is completely de-energized and all capacitors are discharged before measuring resistance.

1. Ampidiro ao anaty lovia ny lovia mena VΩmA jack and the black lead into the fr jack.
2. Set the rotary switch to the desired Resistance (Ω) range. Start with a higher range if the resistance is unknown.
3. Ampifandraiso amin'ilay singa horefesina ireo tariby fitsapana.
4. Vakio ny sandan'ny fanoherana eo amin'ny efijery LCD.

7.5 Fitsapana diode

Caution: Ensure the diode is disconnected from the circuit or the circuit is de-energized before testing.

1. Ampidiro ao anaty lovia ny lovia mena VΩmA jack and the black lead into the fr jack.
2. Set the rotary switch to the Diode symbol (→|).
3. Ampifandraiso amin'ny anode ny tariby mena ary amin'ny cathode an'ny diode ny tariby mainty. Hampiseho ny voltase mandroso ny fampisehoana.tage drop (matetika 0.5V hatramin'ny 0.8V ho an'ny diode silikônina).
4. Reverse the leads. The display should show 'OL' (Overload) for a good diode. If it shows a reading in both directions or 'OL' in both directions, the diode may be faulty.

7.6 Fitsapana Transistor (hFE)

Caution: Ensure the transistor is disconnected from the circuit before testing.

1. Ampidiro ao anaty lovia ny lovia mena VΩmA jack and the black lead into the fr jack.
2. Apetraho amin'ny toeran'ny hFE ny switch rotary.
3. Identify if the transistor is NPN or PNP. Insert the transistor's emitter, base, and collector leads into the corresponding holes in the hFE socket on the multimeter.
4. Read the hFE (DC current gain) value on the LCD display.

8. Famaritana

9. Fikojakojana

9.1 Fanoloana bateria

When the low battery indicator appears on the LCD, replace the 9V battery as described in Section 6.1. A weak battery can lead to inaccurate readings.

9.2 Fanadiovana

Mba hanadiovana ny multimeter, fafao amin'ny doka ny vataamp cloth and a mild detergent. Do not use abrasives or solvents. Ensure the unit is completely dry before use.

9.3 Fanaraha-maso ny Tariby Fitsapana

Regularly inspect the test leads for any signs of damage, such as cracked insulation, exposed wires, or loose connections. Replace damaged leads immediately to prevent electric shock hazards.

10. Famahana olana

• Tsy misy fampisehoana na fampisehoana manjavozavo: Jereo ny bateria. Soloy raha ilaina.
• Famakiana diso:
• Ensure the rotary switch is set to the correct function and range.
• Jereo ny bateria voltage; replace if low.
• Ensure test leads are properly connected and not damaged.
• Ho an'ny fandrefesana ny fanoherana, ataovy izay hahazoana antoka fa tsy misy angovo ao amin'ny fizaran-tany.
• Aseho ny 'OL' (Tafahoatra): The measured value exceeds the selected range. Select a higher range or ensure the circuit is within the meter's capabilities.
• Fuse blown (during current measurement): If the meter stops measuring current, the internal fuse may have blown. Refer to a qualified technician for fuse replacement.

11. Warranty sy fanohanana

Warranty information for the Velleman DVM810 Digital Multimeter is typically provided with your purchase documentation or can be found on the official Velleman website. For technical support, service, or further inquiries, please refer to the contact information provided by your retailer or the manufacturer's official support channels.