સીલી MM20HV ડિજિટલ મલ્ટિમીટર સૂચના માર્ગદર્શિકા

1. પરિચય

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.

કૃપા કરીને ઉપકરણ ચલાવતા પહેલા આ માર્ગદર્શિકાને સારી રીતે વાંચો અને ભવિષ્યના સંદર્ભ માટે તેને જાળવી રાખો.

2. સલામતી માહિતી

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

• સૂચનાઓ વાંચો: Understand all operating instructions and safety warnings before use.
• ઉપકરણ તપાસો: 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.
• ભાગtage મર્યાદાઓ: 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.
• ઇન્સ્યુલેશન: Keep fingers behind the probe barriers during measurements.
• પર્યાવરણ: Do not use the multimeter in wet conditions or in the presence of explosive gases or fumes.
• સર્વિસિંગ: Refer all servicing to qualified personnel. Battery and fuse replacement are the only user-serviceable parts.

3. બોક્સમાં શું છે

અનપેક કરતી વખતે, ખાતરી કરો કે નીચે સૂચિબદ્ધ બધી વસ્તુઓ હાજર છે અને તેને નુકસાન થયું નથી:

• Sealey MM20HV Digital Multimeter
• ટેસ્ટ લીડ્સ (લાલ અને કાળા)
• Thermocouple (Temperature Probe)
• વપરાશકર્તા માર્ગદર્શિકા (આ દસ્તાવેજ)

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

4. સેટઅપ

4.1. બેટરી ઇન્સ્ટોલેશન

The Sealey MM20HV requires two AAA batteries for operation.

1. મલ્ટિમીટરની પાછળ બેટરી કમ્પાર્ટમેન્ટ કવર શોધો.
2. Use a screwdriver to remove the screw securing the cover.
3. Insert two AAA batteries, observing the correct polarity (+ and -) as indicated inside the compartment.
4. બેટરી કમ્પાર્ટમેન્ટ કવર બદલો અને તેને સ્ક્રુ વડે સુરક્ષિત કરો.

4.2. ટેસ્ટ લીડ્સને કનેક્ટ કરવું

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

• Insert the black test lead into the "COM" (Common) jack.
• મોટાભાગના વોલ્યુમ માટેtage, 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.

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

5. ઓપરેટિંગ સૂચનાઓ

The Sealey MM20HV offers 8 functions for various electrical measurements.

5.1. પાવર ચાલુ/બંધ

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. Connect the test probes across the component or circuit to be measured.
4. ભાગ વાંચોtagએલસીડી ડિસ્પ્લે પર ઇ મૂલ્ય.

5.3. માપન એસી વોલ્યુમtage (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 સ્ત્રોત.
4. ભાગ વાંચોtagએલસીડી ડિસ્પ્લે પર ઇ મૂલ્ય.

5.4. Measuring DC Current (A=)

સાવધાન: Never connect the multimeter in parallel with a 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. Open the circuit where current is to be measured and connect the multimeter in series.
5. LCD ડિસ્પ્લે પર વર્તમાન મૂલ્ય વાંચો.

5.5. Measuring Resistance (Ω)

ચેતવણી: પ્રતિકાર માપતા પહેલા ખાતરી કરો કે સર્કિટ ડી-એનર્જાઇઝ્ડ છે અને બધા કેપેસિટર્સ ડિસ્ચાર્જ થયેલ છે.

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. Read the resistance value on the LCD display.

5.6. શ્રાવ્ય સાતત્ય પરીક્ષણ

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. Connect the test probes across the circuit or component.
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 voltage drop. Reverse the probes; the display should show "OL" (Open Loop) for a good diode.
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. જાળવણી

6.1. સફાઈ

જાહેરાત સાથે કેસ સાફ કરોamp cloth and mild detergent. Do not use abrasives or solvents. Ensure the device is off and disconnected from any circuits before cleaning.

6.2. બેટરી રિપ્લેસમેન્ટ

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

6.3. ફ્યુઝ રિપ્લેસમેન્ટ

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.

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

7. મુશ્કેલીનિવારણ

8. સ્પષ્ટીકરણો

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

નોંધ: વિશિષ્ટતાઓ સૂચના વિના બદલવાને પાત્ર છે.

9. વોરંટી અને સપોર્ટ

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 webસાઇટ