BENNING 44690

BENNING MM 7-2 True RMS Digital Multimeter User Manual

Model: 44690

1. Wprowadzenie

The BENNING MM 7-2 is a True RMS digital multimeter designed for precise measurements in industrial, service, electrical trade, and HVAC technology applications. It features a 4 5/6 digit LCD display with backlight, offering high resolution and accuracy for various electrical parameters. This manual provides essential information for the safe and effective use of your BENNING MM 7-2 multimeter.

2. Informacje dotyczące bezpieczeństwa

Always adhere to the following safety precautions to prevent personal injury and damage to the multimeter or equipment under test.

  • Przeczytaj instrukcję: Thoroughly read and understand all instructions before using the multimeter.
  • Znamionowa objętośćtage: Do not exceed the maximum input limits for any function. The multimeter is rated for CAT IV 600V and CAT III 1000V.
  • Sprawdź przed użyciem: Before each use, inspect the multimeter, test leads, and accessories for any damage. Do not use if damaged.
  • Proper Terminals: Ensure test leads are connected to the correct input terminals for the desired measurement function.
  • Obwody pod napięciem: Exercise extreme caution when working on live circuits. Always assume circuits are live until proven otherwise.
  • Środki ochrony osobistej (PPE): Wear appropriate PPE, such as safety glasses and insulated gloves, when necessary.
  • Warunki środowiskowe: Do not use the multimeter in wet environments or in the presence of explosive gases or dust.
  • Zabezpieczenie bezpiecznika: The current input terminals are fuse-protected. Replace fuses only with specified types and ratings.
  • Wymiana baterii: Aby zapewnić dokładne odczyty, należy niezwłocznie wymienić baterie, gdy tylko pojawi się wskaźnik niskiego poziomu naładowania.

3. Konfiguracja i początkowe działanie

3.1 Rozpakowanie i zawartość

Carefully unpack the BENNING MM 7-2 multimeter and verify that all components are present:

  • BENNING MM 7-2 Digital Multimeter
  • Silicone test leads with gold-plated 2mm and 4mm measuring tips (screw-on)
  • Protective carrying bag
  • Wire temperature sensor
  • 3 x 1.5V Micro/AAA/LR03 batteries
  • Bezpieczniki (11A i 0.4A)
BENNING MM 7-2 Multimeter with included accessories: test leads, temperature probe, and carrying case.
Figure 1: BENNING MM 7-2 Multimeter and its complete set of accessories, including test leads, a temperature probe, and a protective carrying case.

3.2 Instalacja baterii

The BENNING MM 7-2 requires 3 AAA batteries for operation. To install or replace batteries:

  1. Upewnij się, że multimetr jest wyłączony i odłącz wszystkie przewody pomiarowe.
  2. Znajdź pokrywę komory baterii z tyłu multimetru.
  3. Użyj śrubokręta, aby otworzyć komorę baterii.
  4. Włóż trzy baterie AAA 1.5 V, zwracając uwagę na prawidłową biegunowość (+/-), zgodnie ze wskazaniami wewnątrz komory.
  5. Załóż pokrywę komory baterii i zabezpiecz ją śrubą.

3.3 Podłączanie przewodów pomiarowych

Always connect the black test lead to the 'COM' (common) jack. Connect the red test lead to the appropriate input jack for the desired measurement:

  • VΩHz: Dla voltage, resistance, frequency, capacitance, and diode/continuity tests.
  • µA mA: Dla mikroampere i milliampobecne pomiary.
  • A: Dla ampobecne pomiary.

4. Instrukcja obsługi

4.1 Włączanie/wyłączanie i wyświetlacz

Turn the rotary switch to any function to power on the multimeter. Turn it to 'OFF' to power off. The 4 5/6 digit LCD display shows measurement values, units, and various indicators. The backlight can be activated for improved visibility in low-light conditions.

4.2 objtagPomiary (prąd stały/przemienny)

The BENNING MM 7-2 can measure both DC and AC voltages up to 1000V. It features an AutoV function for automatic AC/DC switching and range selection.

  1. Turn the rotary switch to 'V'. The multimeter will automatically detect AC or DC voltage.
  2. Connect the black test lead to 'COM' and the red test lead to 'VΩHz'.
  3. Podłącz sondy pomiarowe równolegle do obwodu lub elementu, który chcesz zmierzyć.
  4. Przeczytaj tomtage wartość na wyświetlaczu.
BENNING MM 7-2 Multimeter measuring voltage in an electrical control panel.
Figure 2: The BENNING MM 7-2 Multimeter actively measuring voltage within an electrical control panel, demonstrating its application in industrial settings.

4.3 Pomiar prądu (DC/AC)

The multimeter supports current measurements from microamperes to 10A. Ensure proper fuse protection and correct terminal selection.

  1. Turn the rotary switch to 'µA mA' or 'A' depending on the expected current range.
  2. Connect the black test lead to 'COM'. Connect the red test lead to 'µA mA' or 'A' accordingly.
  3. Ważny: Connect the multimeter in series with the circuit to be measured. Open the circuit and insert the multimeter.
  4. Odczytaj aktualną wartość na wyświetlaczu.
BENNING MM 7-2 Multimeter measuring 4-20mA current in an industrial control system.
Figure 3: The BENNING MM 7-2 Multimeter performing a 4-20mA current loop measurement within an industrial control system, highlighting its capability for process control applications.

4.4 Pomiar rezystancji

Measure resistance up to 60 MOhm.

  1. Turn the rotary switch to 'Ω'.
  2. Connect the black test lead to 'COM' and the red test lead to 'VΩHz'.
  3. Przed pomiarem rezystancji należy upewnić się, że obwód lub element jest odłączony od napięcia.
  4. Podłącz sondy pomiarowe do komponentu.
  5. Odczytaj wartość rezystancji z wyświetlacza.
BENNING MM 7-2 Multimeter measuring the resistance of small electronic resistors.
Figure 4: The BENNING MM 7-2 Multimeter accurately measuring the resistance of small electronic resistors, demonstrating its precision for component testing.

4.5 Pomiar pojemności

Measure capacitance up to 10000 µF.

  1. Turn the rotary switch to 'CAP'.
  2. Connect the black test lead to 'COM' and the red test lead to 'VΩHz'.
  3. Aby zapobiec uszkodzeniu multimetru, przed dokonaniem pomiaru należy upewnić się, że kondensator jest całkowicie rozładowany.
  4. Podłącz sondy pomiarowe do zacisków kondensatora.
  5. Odczytaj wartość pojemności na wyświetlaczu.
BENNING MM 7-2 Multimeter measuring the capacitance of a large blue capacitor.
Figure 5: The BENNING MM 7-2 Multimeter accurately measuring the capacitance of a large blue electrolytic capacitor, illustrating its capability for component analysis.

4.6 Pomiar częstotliwości

Measure frequency up to 1 MHz (logic level) or 50 kHz (mains level).

  1. Turn the rotary switch to 'Hz'.
  2. Connect the black test lead to 'COM' and the red test lead to 'VΩHz'.
  3. Podłącz sondy pomiarowe do źródła sygnału.
  4. Odczytaj wartość częstotliwości na wyświetlaczu.

4.7 Pomiar temperatury

Measure temperature from -200 °C to +1090 °C using the included wire temperature sensor.

  1. Turn the rotary switch to '°C/°F'.
  2. Connect the temperature sensor to the 'VΩHz' and 'COM' jacks, observing polarity if indicated on the sensor.
  3. Place the sensor tip on or near the object whose temperature is to be measured.
  4. Odczytaj wartość temperatury na wyświetlaczu.
BENNING MM 7-2 Multimeter measuring temperature with a yellow wire temperature sensor.
Figure 6: The BENNING MM 7-2 Multimeter displaying a temperature reading, with a yellow wire temperature sensor connected and ready for use.

4.8 Continuity Test and Diode Test

The multimeter provides fast optical and acoustic indications for continuity and diode testing.

  • Ciągłość: Turn the rotary switch to 'Ω'. Press the 'RANGE' button until the continuity symbol (speaker icon) appears. A continuous beep indicates continuity (<100 Ω - 420 Ω).
  • Dioda: Turn the rotary switch to 'Ω'. Press the 'RANGE' button until the diode symbol appears. Connect the red lead to the anode and black lead to the cathode. A forward voltage drop (e.g., 0.5V to 0.8V) will be displayed for a good diode.

4.9 Funkcje specjalne

  • AutoV Function: Automatically switches between AC and DC voltage measurement and selects the appropriate range.
  • Funkcja LoZ: Low input impedance (> 2 kΩ) to suppress capacitive/inductive interspersed voltages, providing more stable readings in certain environments.
  • Low Pass Filter (HFR): High frequency suppression (1000 Hz) for accurate measurements on clocked motor drives.
  • VoltSensor: Non-contact and single-pole phase and cable break testing with two sensitivities, indicated by LCD and buzzer.
  • Optical and Acoustic Socket Control: Provides a warning when the measuring range is incorrectly selected for µA/mA and A ranges.
  • Wstrzymanie danych (HOLD): Zamraża aktualny odczyt wyświetlacza.
  • Min/Max/Avg (MIN MAX AVG): Records minimum, maximum, and average values over a measurement period.
  • Relative Value Measurement (REL): Displays the difference between the current reading and a stored reference value.
  • Peak Memory (PEAK): Captures fast transient peaks.
  • Duty Cycle Measurements: Measures the duty cycle (%) of a signal.
  • 4 mA - 20 mA DC Current Loop (%): Measures the percentage of a 4-20mA current loop, useful in industrial control systems.

5. Konserwacja

5.1 Czyszczenie

Wytrzyj multimetr casing z reklamąamp cloth and mild detergent. Do not use abrasive cleaners or solvents. Ensure the device is dry before use.

5.2 Wymiana baterii

Refer to section 3.2 for battery installation instructions. Replace batteries when the low battery indicator appears on the display to maintain measurement accuracy.

5.3 Wymiana bezpiecznika

If the current measurement functions cease to work, the fuses may need replacement. The BENNING MM 7-2 uses specific fuses:

  • For µA/mA range: 0.4A fuse
  • For A range: 11A fuse

Aby wymienić bezpiecznik:

  1. Upewnij się, że multimetr jest wyłączony i odłącz wszystkie przewody pomiarowe.
  2. Open the battery compartment cover (refer to section 3.2).
  3. The fuse compartment is typically located near the battery compartment. Carefully remove the old fuse.
  4. Install a new fuse of the exact specified type and rating.
  5. Close and secure the compartment cover.

6. Rozwiązywanie Problemów

If you encounter issues with your BENNING MM 7-2, refer to the following common problems and solutions:

  • Brak wyświetlacza/zasilania:
    • Check if the rotary switch is set to an ON position.
    • Verify battery installation and charge level. Replace batteries if low.
  • Nieprawidłowe odczyty:
    • Ensure test leads are connected to the correct input jacks for the selected function.
    • Check if the measurement range is appropriate (though AutoV and auto-ranging help).
    • Verify the integrity of test leads; replace if damaged.
    • Ensure the circuit under test is de-energized for resistance/capacitance measurements.
  • Pomiar prądu nie działa:
    • Check and replace the appropriate fuse (0.4A for µA/mA, 11A for A).
    • Ensure the multimeter is connected in series with the circuit.
  • „OL” lub wskaźnik przeciążenia:
    • The measured value exceeds the selected range. Switch to a higher range if available, or ensure the input is within the multimeter's maximum specifications.

If problems persist, contact BENNING customer support.

7. Specyfikacje

ParametrSpecyfikacja
Wyświetlacz4 5/6 digit LCD (60,000 counts) with backlight, analogue bar display
Prawdziwy RMSAC, AC + DC
Objętość DCtage Zakres0.01mV do 1000V
AC Objętośćtage Zakres0.01mV do 1000V
Zakres prądu stałego0.01 µA do 10 A
Zakres prądu AC0.01 µA do 10 A
Zakres oporu0.01 Ω do 60 MΩ
Zakres pojemności0.01 nF to 10000 µF
Zakres częstotliwości0.001 Hz to 1 MHz (logic level), up to 50 kHz (mains level)
Zakres temperatur-200 °C do +1090 °C
Test ciągłości<100 Ω - 420 Ω (optical/acoustic)
Test Diody3.0 V (optical/acoustic)
Measuring Circuit CategoryKAT IV 600 V, KAT III 1000 V
Źródło zasilania3 baterie AAA 1.5 V
Wymiary produktuWymiary 5.1 x 8.9 x 19.3 cm
Waga przedmiotu420 gram
Norma bezpieczeństwaUL
Cechy specjalneAutoV, LoZ, Low Pass Filter (HFR), VoltSensor, Data Hold, Min/Max/Avg, REL, Peak, Duty Cycle, 4-20mA loop (%)

8. Gwarancja i wsparcie

For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official BENNING webZachowaj dowód zakupu na wypadek roszczeń gwarancyjnych.

© 2023 BENNING. Wszelkie prawa zastrzeżone.

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