د ماسټیک MS8251A ډیجیټل ملټي میټر کارونکي لارښود

1. پیژندنه

د پیرودلو لپاره مننهasing the Mastech MS8251A Digital Multimeter. This device is a portable, professional measuring instrument with a large LCD display, providing clear and easy-to-read results. It is designed for use in laboratories, factories, and homes, offering a wide range of functions including AC/DC voltage, AC/DC current, resistance, capacitance, frequency, duty cycle, temperature, diode, continuity, and non-contact voltagد (NCV) کشف.

Please read this manual thoroughly before using the meter to ensure safe and proper operation. Keep this manual for future reference.

2. د خوندیتوب معلومات

خبرداری: To avoid possible electric shock or personal injury, and to avoid possible damage to the meter or to the equipment under test, follow these instructions:

• Always ensure the meter is in the correct function and range for the measurement being performed.
• د ټاکل شوي حجم څخه ډیر مه پلي کوئtage، لکه څنګه چې په میټر کې نښه شوې، د ترمینل یا د هر ترمینل او ځمکې ځمکې ترمنځ.
• د حجم سره احتیاط وکاروئtagد 30V AC RMS، 42V چوکۍ، یا 60V DC څخه پورته. دا حجمونهtagد شاک خطر رامنځته کوي.
• Before making current measurements, ensure the meter's fuses are intact and the test leads are connected to the correct input jacks.
• Disconnect the circuit power and discharge all high-voltage capacitors مخکې له دې چې د مقاومت، دوام، diodes، یا capacitance ازموینه وکړي.
• Do not use the meter if it is damaged or if the case (or part of the case) is removed. Inspect the meter before use.
• د چاودیدونکي ګاز، بخار یا دوړو په شاوخوا کې میټر مه چلوئ.
• کله چې د میټر خدمت کوئ، یوازې ټاکل شوي بدیل برخې وکاروئ.
• Always use approved test leads.
• که د بیټرۍ پوښ په سمه توګه تړل شوی نه وي، نو میټر مه کاروئ.
• د بیټرۍ پوښ خلاصولو دمخه د میټر څخه د ازموینې لیډونه لرې کړئ.

3. کلیدي ځانګړتیاوې

• ښودنه: 6600 شمېرې
• Auto Ranging and Manual Ranging capabilities
• Automatic Power Off function to conserve battery life
• د اړونده اندازه کولو حالت
• غیر تماس والیtage (NCV) Detector for safety
• ډایډ خلاص والیومtage: 3.2V
• Continuity Buzzer for quick circuit checks
• MAX/MIN value recording
• Data Hold function to freeze readings
• د ټیټ بیټرۍ ښودنې شاخص
• Display Backlight for visibility in low-light conditions

شکل 3.1: پایview of Mastech MS8251A features, main applications, and included contents. This image illustrates the versatility of the multimeter across domestic, industrial, and electronics applications, highlighting its core functionalities and what comes in the box.

۳. د محصول اجزا او نورview

The Mastech MS8251A Digital Multimeter is designed for ease of use and durability. Familiarize yourself with its main parts:

• د LCD نندارې: د اندازه کولو لوستل، واحدونه، او د فعالیت شاخصونه ښیې.
• د فعالیت تڼۍ: REL△, RANGE, MAX/MIN, HOLD, FUNC, NCV, Backlight.
• روټري سویچ: Selects the desired measurement function (e.g., V~, V—, Ω, A~, A—, Temp, Diode, Continuity, Hz%).
• داخله جیکونه:
• COM: د ټولو اندازه کولو لپاره عام ټرمینل.
• VΩHz%Temp→←: د حجم لپاره داخلولtage, resistance, frequency, duty cycle, temperature, diode, and continuity measurements.
• د ماکروا: د ملی لپاره ان پټampمخکې او کوچنيampد اوسني اندازه کولو دمخه.
• 10A: د ۱۰ لپاره ان پټ Ampere current measurements (fused).

شکل 4.1: مخکی view of the Mastech MS8251A Digital Multimeter, showing the LCD display, function buttons, rotary switch, and input jacks. This image provides a clear visual reference for identifying the various parts of the device.

5. ترتیب کول

5.1. د بیټرۍ نصب کول

The Mastech MS8251A requires 2 LR44 batteries (included). To install or replace batteries:

1. ډاډ ترلاسه کړئ چې میټر بند دی او د ټیسټ ټولې لیډونه د ان پټ ټرمینلونو څخه جلا کړئ.
2. د میټر په شا کې د بیټرۍ کڅوړه ومومئ.
3. د بیټرۍ په پوښ ​​کې د سکرو خلاصولو لپاره د سکریو ډرایور څخه کار واخلئ.
4. د بیټرۍ پوښ لرې کړئ.
5. Insert the 2 LR44 batteries, observing the correct polarity (+ and -).
6. د بیټرۍ پوښ بدل کړئ او پیچونه ټینګ کړئ.

۲. د ازموینې لیډونو نښلول

Always connect the common (black) test lead to the COM jack. Connect the red test lead to the appropriate input jack based on the measurement you intend to make:

• د والی لپارهtage, Resistance, Capacitance, Frequency, Duty Cycle, Temperature, Diode, and Continuity measurements, connect the red lead to the VΩHz%Temp→← جیک
• د ملی لپارهampere (mA) or microampere (μA) current measurements, connect the red lead to the mAμA جیک
• د 10 لپاره Ampere (10A) current measurements, connect the red lead to the 10A جیک

6. عملیاتي لارښوونې

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

6.1. عمومي عملیات

• بریښنا فعال/بند: Turn the rotary switch from OFF to any function to power on. Turn to OFF to power off.
• اتومات بریښنا بند: The meter will automatically power off after approximately 15 minutes of inactivity to save battery. Press any button or turn the rotary switch to wake it up.
• شاته رڼا: Press the ★ button to turn the display backlight on or off.
• د معلوماتو ساتل: د سکرین د اوسني لوستلو د کنګل کولو لپاره د هولډ تڼۍ کېکاږئ. د خوشې کولو لپاره بیا فشار ورکړئ.
• MAX/MIN: Press the MAX/MIN button to enter MAX/MIN recording mode. The meter will display the maximum or minimum reading detected. Press again to cycle between MAX, MIN, and current reading. Hold to exit.
• رینج: In auto-ranging mode, press RANGE to switch to manual ranging. Press repeatedly to cycle through available ranges. Hold to return to auto-ranging.
• REL△ (Relative Measurement): Press REL△ to store the current reading as a reference value. Subsequent readings will be displayed as the difference from this reference. Press again to exit.
• FUNC: In multi-function positions (e.g., Diode/Continuity/Temp), press FUNC to cycle through the available sub-functions.

6.2. Specific Measurement Functions

Below are common measurement procedures. Always refer to the specifications for ranges and accuracy.

6.2.1. DC Voltagد e اندازه کول (V—)

1. Set the rotary switch to the V— position.
2. Connect the black test lead to the COM jack and the red test lead to the VΩHz%Temp→← jack.
3. Connect the test leads across the component or circuit to be measured in parallel.
4. ټوک ولولئtage ارزښت په نندارتون کې.

6.2.2. AC Voltagد e اندازه کول (V~)

1. Set the rotary switch to the V~ position.
2. Connect the black test lead to the COM jack and the red test lead to the VΩHz%Temp→← jack.
3. Connect the test leads across the component or circuit to be measured in parallel.
4. ټوک ولولئtage ارزښت په نندارتون کې.

۶.۳. د مقاومت اندازه کول (Ω)

1. Set the rotary switch to the Ω position.
2. Connect the black test lead to the COM jack and the red test lead to the VΩHz%Temp→← jack.
3. د مقاومت اندازه کولو دمخه ډاډ ترلاسه کړئ چې سرکټ غیر انرژي شوی دی.
4. Connect the test leads across the resistor or component.
5. په ښودنه کې د مقاومت ارزښت ولولئ.

6.2.4. Continuity Test (→←)

1. Set the rotary switch to the →← position. Press FUNC if necessary to select continuity.
2. Connect the black test lead to the COM jack and the red test lead to the VΩHz%Temp→← jack.
3. ډاډ ترلاسه کړئ چې سرکټ غیر انرژي شوی دی.
4. Connect the test leads across the circuit or component. If resistance is less than approximately 50Ω, the buzzer will sound, indicating continuity.

6.2.5. Diode Test (→←)

1. Set the rotary switch to the →← position. Press FUNC if necessary to select diode test.
2. Connect the black test lead to the COM jack and the red test lead to the VΩHz%Temp→← jack.
3. ډاډ ترلاسه کړئ چې سرکټ غیر انرژي شوی دی.
4. سور ټیسټ لیډ د انود سره او تور ټیسټ لیډ د ډایډ کیتوډ سره وصل کړئ. ښودنه به د مخکینۍ حجم وښیېtage drop. Reverse the leads; the display should show OL (Open Loop) for a good diode.

6.2.6. غیر اړیکه والیومtage (NCV) کشف

1. د روټري سویچ د NCV موقعیت ته تنظیم کړئ.
2. Move the top end of the meter close to the AC voltage source (e.g., a live wire).
3. The meter will beep and the NCV indicator light will flash if AC voltage is detected. The frequency of beeps and flashes increases with stronger signals.

For other functions like Current (AC/DC), Capacitance, Frequency, Duty Cycle, and Temperature, follow similar steps, ensuring the rotary switch is set to the correct function and test leads are connected to the appropriate input jacks.

7. ساتنه

7.1. پاکول

قضیه د اعلان سره پاک کړئamp cloth and mild detergent. Do not use abrasives or solvents. Keep the terminals free from dirt or dust, which can affect readings.

7.2. د بیټرۍ بدلول

کله چې د ټیټ بیټرۍ شاخص په ډسپلې کې څرګند شي، نو سمدلاسه بیټرۍ بدل کړئ ترڅو دقیق لوستل ډاډمن شي. د بیټرۍ نصبولو لارښوونو لپاره 5.1 برخې ته مراجعه وکړئ.

7.3. د فیوز بدلول

If the meter fails to measure current, the fuse may be blown. To replace the fuse:

1. ډاډ ترلاسه کړئ چې میټر بند دی او د ازموینې ټولې لیډونه منقطع کړئ.
2. د بیټرۍ کڅوړه خلاص کړئ لکه څنګه چې په 5.1 برخه کې تشریح شوي.
3. Locate the fuse(s). The MS8251A typically uses a 10A fuse for the 10A input and a 600mA fuse for the mA/μA input.
4. Carefully remove the old fuse and replace it with a new fuse of the same type and rating.
5. د بیټرۍ پوښ بدل کړئ او پیچونه ټینګ کړئ.

یادونه: Always use fuses with the specified voltage and current ratings for safety and proper operation.

8. ستونزه حل کول

9. مشخصات

9.1. عمومي مشخصات

• د محصول ابعاد: 7.87 x 5.91 x 9.84 انچه (200 x 150 x 250 mm)
• د توکي وزن: ۲.۲ پونډه (۱ کیلوګرامه)
• رنګ: آبي
• د بریښنا سرچینه: Battery Powered (2 LR44 batteries, included)
• جوړونکی: ماسټر
• د ماډل شمیره: YQ-MS8251A
• د خوندیتوب درجه: CAT III 600V، CAT II 1000V

9.2. بریښنایی توضیحات

Figure 9.1: Detailed electrical specifications for the Mastech MS8251A, including ranges, resolutions, and accuracy for various measurement functions such as DC Voltage، AC Voltage, DC Current, AC Current, Resistance, Capacitance, Frequency, and Duty Cycle.

Figure 9.2: Comparison table highlighting features and specifications across various Mastech digital multimeters, including the MS8251A, providing context on its capabilities relative to other models.

10. تضمین

The Mastech MS8251A Digital Multimeter comes with a د 1 کلن محدود تضمین from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accident, unauthorized repair, neglect, or modification. Please retain your purchase receipt as proof of purchase for warranty claims.

11. ملاتړ

For technical support, troubleshooting assistance, or warranty inquiries, please contact Mastech customer service. You can find more information and contact details on the official Mastech webسایټ یا د پرچون پلورونکي له لارې چیرې چې تاسو محصول اخیستی.

لیدنه وکړئ په ایمیزون کې د ماسټیک پلورنځی د اضافي محصول معلوماتو او ملاتړ سرچینو لپاره.