Extech MM750W Datalogging True RMS Multimeter User Manual

1. المقدمة

This manual provides instructions for the safe and effective use of the Extech MM750W Datalogging True RMS Multimeter. The MM750W is a robust, full-featured multimeter designed for professional use, offering 14 functions including non-contact AC voltage detection and Type K temperature measurements. Its CAT IV safety rating ensures protection in industrial environments. A key feature is its wireless datalogging capability via Bluetooth, allowing real-time data transmission to smart devices using the ExView W-Series app.

الشكل 1: الجبهة view of the Extech MM750W Datalogging True RMS Multimeter, showing the display, function dial, and input jacks.

2. معلومات السلامة

WARNING: Read and understand all safety information and operating instructions before using this meter. Failure to do so may result in serious injury or death.

• التزم دائمًا بقوانين السلامة المحلية والوطنية.
• لا تستخدم الجهاز إذا بدا تالفًا أو إذا كانت أسلاك الاختبار تالفة.
• تأكد من أن مفتاح الوظيفة في الوضع الصحيح للقياس الذي يتم إجراؤه.
• Observe all terminal ratings and never exceed the maximum input limits.
• توخ الحذر عند العمل مع المجلدtagيجب ألا تتجاوز البطاريات 30 فولت تيار متردد جذر متوسط ​​التربيع، أو 42 فولت ذروة، أو 60 فولت تيار مستمر، لأنها تشكل خطر صدمة كهربائية.
• ارتدِ معدات الوقاية الشخصية المناسبة، مثل نظارات السلامة والقفازات العازلة.
• The MM750W is rated for CAT IV 600V and CAT III 1000V. Understand the implications of these categories for safe measurement.

3. الميزات الرئيسية

• Wireless Datalogging: Records and transmits over 15,000 readings to iOS and Android devices via Bluetooth Datalogging Module (DAT12) for remote viewing using the free ExView W-Series app.
• 14 Measurement Functions: يتضمن مستوى صوت التيار المتردد/المستمرtage, AC/DC Current, Resistance, Capacitance, Frequency, Duty Cycle, Diode Test, Continuity, Non-Contact AC Voltage (NCV), and Type K Temperature.
• RMS الحقيقي: Provides accurate AC measurements for non-sinusoidal waveforms.
• AC µA Function: Ideal for HVAC flame rod current measurements.
• التقاط البيانات: Allows snapshots of the measurement area with a connected smartphone or tablet camera to document date/time stamps and measurement data.
• تصنيف السلامة CAT IV: Provides enhanced protection in industrial environments.

4. ماذا يوجد في الصندوق

تأكد من أن جميع العناصر موجودة وغير تالفة عند فك العبوة:

• Extech MM750W Multimeter
• أسلاك اختبار (واحد أحمر، وواحد أسود)
• Type K Bead Wire Temperature Probe
• Bluetooth Datalogging Module (DAT12)
• 9V Battery (installed or separate)
• حقيبة حمل ناعمة

Figure 2: The Extech MM750W Multimeter shown with its complete set of accessories, including test leads, a Type K temperature probe, the DAT12 Bluetooth module, and a soft carrying case.

5. الإعداد

5.1. تركيب البطارية

1. تأكد من إيقاف تشغيل العداد.
2. حدد مكان حجرة البطارية في الجزء الخلفي من العداد.
3. استخدم مفك البراغي لإزالة المسمار الذي يثبت غطاء البطارية.
4. قم بإزالة غطاء البطارية بعناية.
5. Connect a 9V battery to the battery clips, observing correct polarity.
6. ضع البطارية في مكانها وأعد تركيب الغطاء، ثم ثبته بالبرغي.

5.2. توصيل سلك الاختبار

Always connect the test leads correctly for the desired measurement function.

• بالنسبة لمعظم المجلداتtage, resistance, continuity, and diode measurements, insert the red test lead into the VΩµA input jack and the black test lead into the COM input jack.
• For current measurements up to 600mA, insert the red test lead into the VΩµA input jack and the black test lead into the COM input jack.
• For current measurements up to 10A, insert the red test lead into the 10A input jack and the black test lead into the COM input jack.

الشكل 3: خلفي view of the Extech MM750W Multimeter, showing the integrated test lead holders and the battery compartment cover. The test leads are shown connected and stored.

5.3. Bluetooth Datalogging Module (DAT12)

The DAT12 module enables wireless communication with smart devices.

1. Insert the DAT12 module into the dedicated port on the top of the multimeter.
2. Download the free ExView W-Series app from your device's app store (iOS or Android).
3. قم بتمكين Bluetooth على جهازك الذكي.
4. افتح ملف ExView W-Series app and follow the on-screen instructions to pair with the MM750W.

6. التشغيل

6.1. القياسات الأساسية

Turn the rotary switch to the desired function. The display will show the measurement value.

• المجلدtage (V~, V-): حدد AC أو DC voltage. Connect test leads in parallel with the circuit.
• Current (A~, A-): Select AC or DC current. Connect test leads in series with the circuit. Ensure correct input jack (µA/mA or 10A).
• المقاومة (Ω): Turn off power to the circuit. Connect test leads across the component.
• الاستمرارية ()))): Turn off power. Connect test leads across the circuit. A tone indicates continuity.
• اختبار الصمام الثنائي (→|): Turn off power. Connect test leads across the diode.

Figure 4: An electrician safely measuring voltage within an electrical panel using the Extech MM750W Multimeter. The meter's display is visible, showing a reading.

6.2. الوظائف المتقدمة

• حجم التيار المتردد غير المتصلtagه (NCV): Position the top of the meter near an AC voltage source. The NCV indicator will illuminate, and an audible tone will sound if AC voltagتم الكشف عن ذلك.
• Type K Temperature (Temp): Insert the Type K bead wire probe into the VΩµA and COM jacks (observing polarity). Select the temperature function.
• ماكس دقيقة: Press the MAX/MIN button to record the maximum and minimum readings during a measurement session.
• الوضع النسبي (REL): Press the REL button to store the current reading as a reference and display subsequent measurements as a deviation from this reference.
• التردد/دورة التشغيل (هرتز/%): Select the appropriate function to measure frequency or duty cycle of an AC signal.

Figure 5: A technician using the Extech MM750W Multimeter with its Type K temperature probe to measure the temperature of a furnace flue, demonstrating the meter's temperature measurement capability.

6.3. Datalogging and Bluetooth Connectivity

السابقView W-Series app enhances the functionality of your MM750W.

1. Ensure the DAT12 module is connected and the meter is paired with your smart device via the ExView W-Series app.
2. داخل التطبيق يمكنك view real-time readings, initiate datalogging sessions, and configure logging intervals.
3. The app allows you to generate reports, analyze collected data, and add notes or photos (taken with your smart device camera) to specific readings for comprehensive documentation.
4. Your smart device can also serve as a second display for convenient viewing or sharing of measurements from a safe distance.

7. الصيانة

7.1. التنظيف

امسح غلاف العداد بالإعلانamp استخدم قطعة قماش ومنظفًا معتدلًا. لا تستخدم مواد كاشطة أو مذيبات. تأكد من جفاف الجهاز تمامًا قبل الاستخدام.

7.2. استبدال البطارية

When the battery symbol appears on the display, replace the 9V battery as described in Section 5.1. Prompt battery replacement ensures accurate readings and proper meter function.

8. استكشاف الأخطاء وإصلاحها

9. المواصفات

10. الضمان والدعم

Extech Instruments provides a warranty for this product against defects in materials and workmanship. Specific warranty terms and duration may vary by region and purchase date. Please refer to the warranty card included with your product or visit the official Extech webموقع للحصول على معلومات الضمان التفصيلية.

For technical support, service, or replacement parts, please contact Extech Customer Service. Contact information can typically be found on the Extech webالموقع أو في الوثائق المرفقة بمنتجك.