Llawlyfr Defnyddiwr Multimedr Digidol 7 Swyddogaeth Sealey MM19

1. Rhagymadrodd

This manual provides instructions for the safe and effective use of the Sealey MM19 Digital Multimeter. The MM19 is a general-purpose multimeter designed for measuring various electrical parameters, including AC and DC voltage, DC current, resistance, audible continuity, and diode/transistor verification. Please read this manual thoroughly before operation and retain it for future reference.

2. Gwybodaeth Diogelwch

Always observe basic safety precautions when using electrical test equipment to reduce the risk of fire, electric shock, or personal injury. This device complies with IEC 1010 and CE CAT II safety standards.

• Do not exceed the maximum input limits for any function. Refer to the specifications section for details.
• Peidiwch byth â gwneud cais cyftage to the meter when the rotary switch is set to Resistance (Ω), Diode, Continuity, or Current (A) functions.
• Byddwch yn ofalus wrth weithio gyda chyftages above 30V AC RMS, 42V peak, or 60V DC. Mae'r rhain cyftages yn peri perygl sioc.
• Ensure the test leads are in good condition, without cracked or broken insulation.
• Always connect the common (COM) test lead first and disconnect it last.
• Disconnect power to the circuit under test before measuring resistance or continuity.
• Amnewid y batri ar unwaith when the low battery indicator appears to ensure accurate readings.

3. Cynnyrch Drosview

The Sealey MM19 Digital Multimeter features a clear LCD display, a central rotary switch for function selection, and input jacks for test leads.

The Sealey MM19 Digital Multimeter, shown with its yellow casing, large LCD display, rotary function switch, and red and black test leads connected to the input jacks.

Cydrannau:

• Arddangosfa LCD: Large (46 x 25mm) digital display for reading measurements.
• Switsh Rotari: Fe'i defnyddir i ddewis y swyddogaeth fesur a'r amrediad a ddymunir.
• VΩmA Input Jack: Ar gyfer cyftage, resistance, and current measurements up to 200mA.
• 10ADC Input Jack: For high current measurements up to 10A DC (unfused).
• Jack Mewnbwn COM: Mewnbwn cyffredin (negatif) ar gyfer pob mesuriad.
• Soced hFE: For transistor (NPN/PNP) testing.
• Arweinwyr Prawf: Red (positive) and Black (negative) leads for connecting to circuits.

4. Gosod

4.1. Gosod Batri

The Sealey MM19 Multimeter requires a 9V battery for operation. If the display does not illuminate or shows a low battery indicator, the battery needs to be installed or replaced.

1. Gwnewch yn siŵr bod y multimedr wedi'i ddiffodd.
2. Lleolwch glawr adran y batri ar gefn yr uned.
3. Tynnwch y sgriw(iau) sy'n sicrhau'r clawr a'i godi i ffwrdd yn ofalus.
4. Connect a new 9V battery to the battery clips, observing correct polarity.
5. Rhowch y batri y tu mewn i'r adran a rhoi'r clawr yn ôl, gan ei sicrhau gyda'r sgriw(iau).

4.2. Cysylltu Gwifrau Prawf

The multimeter is supplied with a pair of test leads (red and black).

• Mewnosoder y plwm prawf du i mewn i'r COM Jac mewnbwn (Cyffredin).
• Ar gyfer y rhan fwyaf o fesuriadau (cyf.tage, resistance, low current), insert the gwifren brawf coch i mewn i'r VΩmA jack mewnbwn.
• For high DC current measurements (up to 10A), insert the gwifren brawf coch i mewn i'r 10ADC jack mewnbwn.

5. Cyfarwyddiadau Gweithredu

To operate the multimeter, select the desired function and range using the rotary switch.

5.1. Mesur Cyfaint DCtage (DCV)

1. Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. Set the rotary switch to the desired DCV range (e.g., 200m, 2000m, 20, 200, 1000). Start with the highest range if the voltage yn anhysbys.
3. Cysylltwch y gwifrau prawf ar draws y gydran neu'r gylched i'w mesur.
4. Darllenwch y cyftage gwerth ar yr arddangosfa LCD.

5.2. Mesur AC Cyftage (ACV)

1. Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. Set the rotary switch to the desired ACV range (e.g., 200, 750). Start with the highest range if the voltage yn anhysbys.
3. Cysylltwch y gwifrau prawf ar draws y gydran neu'r gylched i'w mesur.
4. Darllenwch y cyftage gwerth ar yr arddangosfa LCD.

5.3. Measuring DC Current (DCA)

1. Ar gyfer ceryntau hyd at 200mA: Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. Ar gyfer ceryntau hyd at 10A: Insert the red lead into the 10ADC jack and the black lead into the COM jack.
3. Set the rotary switch to the desired DCA range (e.g., 200μ, 2000μ, 20m, 200m, 10A). Start with the highest range if the current is unknown.
4. Trowch y pŵer i ffwrdd i'r gylched. Open the circuit where the current is to be measured.
5. Cysylltwch y multimedr mewn cyfres â'r gylched.
6. Rhowch bŵer i'r gylched a darllenwch y gwerth cerrynt ar yr arddangosfa LCD.

5.4. Mesur Gwrthiant (Ω)

1. Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. Set the rotary switch to the desired Resistance (Ω) range (e.g., 200, 2000, 20k, 200k, 2000k).
3. Ensure the circuit under test is de-energized.
4. Cysylltwch y gwifrau prawf ar draws y gydran i'w mesur.
5. Darllenwch y gwerth gwrthiant ar yr arddangosfa LCD.

5.5. Prawf Parhad Clywadwy

1. Insert the red lead into the VΩmA jack and the black lead into the COM jack.
2. Set the rotary switch to the continuity symbol (speaker icon).
3. Ensure the circuit under test is de-energized.
4. Cysylltwch y gwifrau prawf ar draws y gydran neu'r wifren.
5. If continuity exists (low resistance), the meter will emit an audible tone. The display will show the resistance value.

5.6. Diode/Transistor Verification Mode (hFE)

1. Insert the red lead into the VΩmA jack and the black lead into the COM jack for diode testing.
2. Set the rotary switch to the diode symbol.
3. Cysylltwch y plwm coch â'r anod a'r plwm du â chatod y deuod. Bydd yr arddangosfa'n dangos y gyfaint ymlaen.tage drop. Reverse the leads; the display should show 'OL' (open loop) for a good diode.
4. For transistor hFE measurement, insert the transistor leads (Emitter, Base, Collector) into the appropriate sockets (E, B, C) in the hFE test socket, ensuring correct NPN or PNP type selection.
5. Read the hFE value on the LCD display.

6. cynnal

6.1. Glanhau

Sychwch y mesurydd casing gyda hysbysebamp lliain a glanedydd ysgafn. Peidiwch â defnyddio sgraffinyddion na thoddyddion. Gwnewch yn siŵr bod y mesurydd yn hollol sych cyn ei ddefnyddio.

6.2. Amnewid Batri

Refer to Section 4.1 for battery installation instructions. Replace the 9V battery when the low battery indicator appears on the display to maintain measurement accuracy.

7. Datrys Problemau

• Dim Arddangosfa: Gwiriwch osodiad y batri a gwnewch yn siŵr bod digon o wefr ar y batri.
• 'OL' or '1' on Display: This usually indicates an over-range condition or an open circuit. Select a higher range or check connections.
• Darlleniadau anghywir: Ensure the correct function and range are selected. Check test lead connections and battery condition.
• Dim Tôn Parhad: Verify the circuit is de-energized and the leads are making good contact.

8. manylebau

9. Gwarant a Chefnogaeth

For warranty information or technical support, please refer to the documentation provided with your purchase or contact Sealey customer service directly. Keep your proof of purchase for any warranty claims.