BTMETER BT-90EPD Bluetooth APP Digital Multimeter

1. Introduktion

The BTMETER BT-90EPD Auto-Ranging Digital Multimeter is designed for troubleshooting electrical problems in a wide array of industrial and household devices. It is compact, lightweight, durable, and easy to operate. This multimeter can measure AC/DC current, AC/DC voltage, resistance, continuity, transistor, and diodes with high accuracy. It features Bluetooth connectivity for real-time data transmission to mobile phones (iOS & Android) and allows data export to Excel files. The device is CATIV 600V / CATIII 1000V certified for safety.

Key features include an auto-backlit LCD display for dark environments, attachable test leads, a stand for hands-free use, and protective rubber corner guards for drop protection.

2. Pakkens indhold

Når du åbner pakken, skal du kontrollere, at alle nedenstående varer er til stede og i god stand:

• 1x BTMETER BT-90EPD Digital Multimeter
• 1x 9V (6F22) Battery (Pre-installed)
• 1x Pair of High-Quality Test Leads (Red and Black)
• 1x temperaturføler
• 1x brugermanual
• 1x bæretaske

Image: Contents of the BTMETER BT-90EPD package.

3. Produktet er slutview og kontroller

Familiarize yourself with the components and controls of your BT-90EPD multimeter.

Image: Front panel of the BT-90EPD multimeter with labeled controls and input jacks.

• LCD-skærm: Viser måleaflæsninger, enheder og funktionsindikatorer.
• SELECT-tast: Toggles between different measurement modes within a rotary switch position (e.g., AC/DC voltage, diode/kontinuitet).
• HOLD-tast: Fryser den aktuelle displayaflæsning. Tryk igen for at slippe.
• RANGE Key: Switches between auto-ranging and manual ranging modes.
• REL Key: Activates the relative measurement function, displaying the difference from a stored reference value.
• Hz/% Key: Toggles between frequency and duty cycle measurements.
• Drejekontakt: Selects the primary measurement function (e.g., Voltage, Current, Resistance, Temperature).
• CDS Sensor: Light sensor for automatic backlight control.
• Indgangsstik:
• VHzΩ+))|-- Input Jack: For bdtage, frequency, resistance, continuity, and diode measurements.
• COM and Temperature '-' Input Jack: Common terminal for all measurements and negative input for temperature.
• µAmA/BATT and Temperature '+' Input Jack: Til mikroampnu, milliampere, battery test, and positive input for temperature.
• 20A indgangsstik: Til målinger af høj strøm (op til 20A).

4. Opsætning

4.1. Batteriinstallation

The BT-90EPD comes with a pre-installed 9V (6F22) battery. If replacement is needed:

1. Sørg for, at multimeteret er slukket, og at testledningerne er frakoblet.
2. Find batterirummet på bagsiden af ​​enheden.
3. Unscrew the retaining screw(s) and remove the battery cover.
4. Carefully remove the old battery and replace it with a new 9V (6F22) battery, observing polarity.
5. Sæt batteridækslet på igen, og fastgør det med skruen/skruerne.

Image: Back of the BT-90EPD multimeter showing battery compartment access.

4.2. Tilslutning af testledninger

Tilslut altid den sorte testledning til KOM Tilslut den røde testledning til det relevante indgangsstik baseret på måletypen:

• For bindtage, Resistance, Frequency, Duty Cycle, Diode, and Continuity measurements, connect the red lead to the VHzΩ+))|-- stik.
• Til mikroampere (µA), milliampere (mA), and Battery tests, connect the red lead to the µAmA/BATT stik.
• For high current (up to 20A) measurements, connect the red lead to the 20A stik.

5. Betjeningsvejledning

5.1. Grundlæggende målinger

To perform basic measurements:

1. Turn the rotary switch to the desired function (e.g., V~ for AC Voltage, V- for DC Voltage, Ω for modstand).
2. Connect the test leads to the appropriate input jacks and then to the circuit or component under test.
3. Aflæs måleværdien på LCD-displayet.

Image: Measuring resistance with the BT-90EPD multimeter.

5.2. Temperaturmåling

For at måle temperatur:

1. Turn the rotary switch to the Temperature (℃/℉) function.
2. Connect the temperature probe to the KOM (negativ) og µAmA/BATT and Temperature '+' (positive) jacks.
3. Placer spidsen af ​​temperatursonden på eller i det objekt, hvis temperatur skal måles.
4. Read the temperature value on the LCD display. Use the SELECT button to toggle between Celsius and Fahrenheit if available.

Image: Measuring liquid temperature using the BT-90EPD multimeter and its probe.

5.3. Battery Testing (1.5V~12V)

To test battery voltage:

1. Drej drejekontakten til BATT function (usually combined with µA/mA).
2. Tilslut den sorte testledning til KOM stik og den røde testledning til µAmA/BATT stik.
3. Tilslut den røde testledning til batteriets positive pol og den sorte testledning til batteriets negative pol.
4. Læs batterivolumentage på LCD-skærmen.

Image: Testing a 9V battery with the BT-90EPD multimeter.

5.4. Bluetooth App Connection and Data Logging

The BT-90EPD can connect to your smartphone for remote monitoring and data logging.

1. Download the 'iMultimeter' app from your mobile phone's app store (iOS/Android). You can find the app via this link: iMultimeter App.
2. Sørg for, at Bluetooth er aktiveret på din smartphone.
3. Turn on the BT-90EPD multimeter.
4. Open the 'iMultimeter' app on your phone and follow the in-app instructions to connect to your device.
5. Once connected, you can remotely monitor measurements, log data, view on-screen graphs, and export data in EXCEL or TXT files.

Image: Screenshots of the iMultimeter mobile application interface.

5.5. Auto Backlight Display

The multimeter features an auto-backlight display that senses ambient brightness and automatically turns the backlight ON or OFF, improving readability in various lighting conditions without manual intervention.

5.6. Datahold

Tryk på HOLDE button to freeze the current reading on the display. This is useful for recording measurements in situations where it's difficult to view the display directly. Press HOLDE again to resume live readings.

5.7. Relative Value Measurement

De REL function allows you to measure a value relative to a stored reference value. Press the REL button to store the current reading as a reference. Subsequent measurements will display the difference from this reference. Press REL again to exit relative mode.

6. Sikkerhedsoplysninger

To ensure safe operation and avoid damage to the meter, observe the following safety precautions:

• Sørg altid for, at multimeteret er indstillet til den korrekte funktion og det korrekte område, før du foretager en måling.
• Anvend aldrig voltage or current that exceeds the maximum rated input for any function.
• Vær yderst forsigtig, når du arbejder med voltagover 60V DC eller 30V AC RMS, da disse udgør en fare for stød.
• Brug ikke måleren, hvis den eller testledningerne ser ud til at være beskadigede.
• Ensure the test leads are fully seated in the input jacks.
• Frakobl testledningerne fra kredsløbet, før du ændrer funktioner eller områder.
• Udskift batteriet med det samme, når indikatoren for lavt batteri vises, for at sikre nøjagtige aflæsninger.
• Overhold alle lokale og nationale sikkerhedsforskrifter.

7. Vedligeholdelse

7.1. Rensning

Tør sagen af ​​med annonceamp cloth and mild detergent. Do not use abrasives or solvents. Periodically clean the input jacks with a cotton swab and alcohol to prevent poor contact from dirt or moisture.

7.2. Udskiftning af batteri

Refer to Section 4.1 for instructions on replacing the 9V battery when the low battery indicator is displayed.

7.3. Udskiftning af sikring

If the current measurement function fails, the fuse may need replacement. Fuse replacement should only be performed by qualified personnel. Refer to the specifications for the correct fuse type and rating.

8. Fejlfinding

If the multimeter does not function correctly, check the following:

• Ingen visning eller svag visning: Kontroller batteriet. Udskift det om nødvendigt.
• Forkerte aflæsninger:
• Sørg for, at testledningerne er korrekt tilsluttet de relevante indgangsstik.
• Kontroller, at drejekontakten er indstillet til den korrekte målefunktion og -område.
• Kontroller for beskadigede testledninger.
• Strømmåling virker ikke: Tjek sikringen.
• Problemer med Bluetooth-forbindelse:
• Ensure Bluetooth is enabled on your phone and the multimeter.
• Restart both the multimeter and the phone app.
• Ensure the phone is within the specified range (32.8 ~ 49.2 ft).

9. Specifikationer

10. Garanti og support

BTMETER products are designed for reliability and performance. For warranty information or technical support, please refer to the documentation included with your purchase or contact BTMETER customer service directly. Contact details can typically be found on the official BTMETER webhjemmeside eller gennem din forhandler.