BTMETER BT-90EPD Bluetooth APP Digital Multimeter

1. Johdanto

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. Pakkauksen sisältö

Avattuasi paketin tarkista, että kaikki alla luetellut osat ovat mukana ja hyvässä kunnossa:

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

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

3. Tuote ohiview ja säätimet

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-näyttö: Näyttää mittauslukemat, yksiköt ja toimintojen ilmaisimet.
• SELECT-näppäin: Toggles between different measurement modes within a rotary switch position (e.g., AC/DC voltage, diodi/jatkuvuus).
• HOLD-näppäin: Jäädyttää nykyisen näytön lukeman. Paina uudelleen vapauttaaksesi.
• ALUE-avain: Switches between auto-ranging and manual ranging modes.
• REL-avain: Activates the relative measurement function, displaying the difference from a stored reference value.
• Hz/% Key: Vaihtaa taajuus- ja käyttösuhdemittausten välillä.
• Kiertokytkin: Valitsee ensisijaisen mittaustoiminnon (esim. tilavuustage, Virta, Resistanssi, Lämpötila).
• CDS-anturi: Light sensor for automatic backlight control.
• Tuloliittimet:
• VHzΩ+))|-- Input Jack: Voltage, 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: Mikroilleampno, milliampere, battery test, and positive input for temperature.
• 20A tuloliitin: Suurten virtojen mittauksiin (jopa 20 A).

4. Asennus

4.1. Akun asennus

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

1. Varmista, että yleismittari on sammutettu ja mittausjohdot on irrotettu.
2. Paikanna paristolokero laitteen takana.
3. Irrota kiinnitysruuvi(t) ja poista paristokotelon kansi.
4. Carefully remove the old battery and replace it with a new 9V (6F22) battery, observing polarity.
5. Aseta paristokotelon kansi takaisin paikalleen ja kiinnitä se ruuveilla/ruuveilla.

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

4.2. Testijohtojen liittäminen

Liitä aina musta mittausjohto siihen COM jack. Connect the red test lead to the appropriate input jack based on the measurement type:

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

5. Käyttöohjeet

5.1. Perusmittaukset

To perform basic measurements:

1. Turn the rotary switch to the desired function (e.g., V~ for AC Voltage, V- tasavirtajännitteelletage, Ω for Resistance).
2. Connect the test leads to the appropriate input jacks and then to the circuit or component under test.
3. Lue mittausarvo LCD-näytöltä.

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

5.2. Lämpötilan mittaus

Lämpötilan mittaaminen:

1. Turn the rotary switch to the Temperature (℃/℉) function.
2. Kytke lämpötila-anturi COM (negative) and µAmA/BATT and Temperature '+' (positive) jacks.
3. Aseta lämpötila-anturin kärki mitattavan kohteen päälle tai sisään.
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. Käännä kiertokytkin asentoon BATT function (usually combined with µA/mA).
2. Liitä musta mittausjohto COM liittimeen ja punainen mittausjohto µAmA/BATT Jack.
3. Kytke punainen mittausjohto akun positiiviseen napaan ja musta mittausjohto negatiiviseen napaan.
4. Lue akun tilavuustage LCD-näytössä.

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. Varmista, että Bluetooth on käytössä älypuhelimellasi.
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. Tietojen säilytys

Paina PIDÄ 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 PIDÄ again to resume live readings.

5.7. Relative Value Measurement

The 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. Turvallisuustiedot

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

• Always ensure the multimeter is set to the correct function and range before making a measurement.
• Älä koskaan käytä voltage or current that exceeds the maximum rated input for any function.
• Ole erittäin varovainen, kun työskentelet voltagyli 60 V DC:n tai 30 V AC:n RMS-jännitteille, koska ne aiheuttavat sähköiskun vaaran.
• Älä käytä mittaria, jos se tai mittausjohdot näyttävät vaurioituneilta.
• Ensure the test leads are fully seated in the input jacks.
• Disconnect the test leads from the circuit before changing functions or ranges.
• Vaihda paristo välittömästi, kun heikon pariston ilmaisin tulee näkyviin, jotta mittaustulokset ovat tarkkoja.
• Noudata kaikkia paikallisia ja kansallisia turvallisuusmääräyksiä.

7. Huolto

7.1. Puhdistus

Pyyhi kotelo mainoksellaamp 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. Pariston vaihto

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

7.3. Sulakkeen vaihto

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. Vianmääritys

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

• Ei näyttöä tai himmeä näyttö: Tarkista akku. Vaihda tarvittaessa.
• Virheelliset lukemat:
• Ensure test leads are correctly connected to the appropriate input jacks.
• Verify the rotary switch is set to the correct measurement function and range.
• Tarkista, onko mittausjohdot vaurioituneet.
• Virran mittaus ei toimi: Tarkista sulake.
• Bluetooth-yhteysongelmat:
• 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. Tekniset tiedot

10. Takuu ja tuki

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 websivustoltasi tai jälleenmyyjän kautta.