Extech MM750W Datalogging True RMS Multimeter User Manual

1. Introduktion

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.

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

2. Sikkerhedsoplysninger

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.

• Overhold altid lokale og nationale sikkerhedsforskrifter.
• Brug ikke måleren, hvis den ser beskadiget ud, eller hvis testledningerne er beskadigede.
• Sørg for, at funktionskontakten er i den korrekte position for den måling, der udføres.
• Observe all terminal ratings and never exceed the maximum input limits.
• Vær forsigtig, når du arbejder med voltagover 30V AC RMS, 42V peak eller 60V DC, da disse udgør en risiko for stød.
• Brug passende personlige værnemidler (PPE), såsom sikkerhedsbriller og isolerede handsker.
• The MM750W is rated for CAT IV 600V and CAT III 1000V. Understand the implications of these categories for safe measurement.

3. Nøglefunktioner

• 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: Inkluderer AC/DC-volumentage, AC/DC Current, Resistance, Capacitance, Frequency, Duty Cycle, Diode Test, Continuity, Non-Contact AC Voltage (NCV), and Type K Temperature.
• Ægte RMS: Provides accurate AC measurements for non-sinusoidal waveforms.
• AC µA Function: Ideal for HVAC flame rod current measurements.
• Datafangst: Allows snapshots of the measurement area with a connected smartphone or tablet camera to document date/time stamps and measurement data.
• CAT IV sikkerhedsvurdering: Provides enhanced protection in industrial environments.

4. Hvad er der i æsken

Kontroller, at alle genstande er til stede og ubeskadigede ved udpakning:

• Extech MM750W Multimeter
• Testledninger (en rød, en sort)
• Type K Bead Wire Temperature Probe
• Bluetooth Datalogging Module (DAT12)
• 9V Battery (installed or separate)
• Blød bæretaske

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. Opsætning

5.1. Batteriinstallation

1. Sørg for, at måleren er slukket.
2. Find batterirummet på bagsiden af ​​måleren.
3. Brug en skruetrækker til at fjerne skruen, der fastgør batteridækslet.
4. Fjern forsigtigt batteridækslet.
5. Connect a 9V battery to the battery clips, observing correct polarity.
6. Placer batteriet i batterirummet, og sæt dækslet på igen, og fastgør det med skruen.

5.2. Tilslutning af testledning

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

• For de fleste volumenertage, 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.

Figur 3: Bagside 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. Aktivér Bluetooth på din smartenhed.
4. Åbn ExView W-Series app and follow the on-screen instructions to pair with the MM750W.

6. Betjening

6.1. Grundlæggende målinger

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

• Voltage (V~, V-): Vælg AC eller 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).
• Modstand (Ω): Turn off power to the circuit. Connect test leads across the component.
• Kontinuitet ()))): Turn off power. Connect test leads across the circuit. A tone indicates continuity.
• Diode test (→|): 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. Avancerede funktioner

• Non-Contact AC Voltage (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 voltage er opdaget.
• Type K Temperature (Temp): Insert the Type K bead wire probe into the VΩµA and COM jacks (observing polarity). Select the temperature function.
• MAX / MIN: Press the MAX/MIN button to record the maximum and minimum readings during a measurement session.
• Relativ tilstand (REL): Press the REL button to store the current reading as a reference and display subsequent measurements as a deviation from this reference.
• Frekvens/arbejdscyklus (Hz/%): 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

EksView 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. I appen kan du 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. Vedligeholdelse

7.1. Rensning

Tør målerens hus af med enamp klud og mildt rengøringsmiddel. Brug ikke slibemidler eller opløsningsmidler. Sørg for, at måleren er helt tør før brug.

7.2. Udskiftning af batteri

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. Fejlfinding

9. Specifikationer

10. Garanti og support

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 webwebstedet for detaljerede garantioplysninger.

For technical support, service, or replacement parts, please contact Extech Customer Service. Contact information can typically be found on the Extech webwebstedet eller i dokumentationen, der følger med dit produkt.