BENNING CM 2-1 True RMS Current Clamp Manual de utilizare pentru multimetru

1. Introducere

The BENNING CM 2-1 is a True RMS current clamp multimeter designed for precise electrical measurements in various applications. This device offers accurate current measurement up to 400 A AC/DC and voltage measurement up to 600 V AC/DC. Key features include an AutoV function with low input impedance (LoZ) to suppress reactive voltage and a low pass filter (HFR high frequency suppression) for measurements on clocked motor drives. It is rated for measurement categories CAT IV 300 V and CAT III 600 V, ensuring safety and reliability.

2. Informații de siguranță

WARNING: Read and understand all safety information and operating instructions before using this instrument. Failure to follow these instructions could result in severe injury or death.

• Always adhere to local and national safety regulations.
• Nu utilizați multimetrul dacă pare deteriorat sau dacă izolația cablurilor de testare este compromisă.
• Asigurați-vă că ați selectat funcția și intervalul corect înainte de a efectua orice măsurătoare.
• Nu depășiți limitele maxime de intrare pentru nicio funcție.
• Fiți precauți când lucrați cu volumtages above 30 V AC RMS, 42 V AC peak, or 60 V DC, as these pose a shock hazard.
• Always disconnect the test leads from the circuit before changing the function switch.
• Înlocuiți bateriile când apare indicatorul de baterie descărcată pentru a asigura citiri precise.
• The device is rated CAT IV 300 V and CAT III 600 V. Understand these categories and use the meter only in appropriate environments.

3. Conținutul pachetului

Verificați dacă toate articolele sunt prezente și nedeteriorate la despachetare:

• BENNING CM 2-1 True RMS Current Clamp Multimetrul
• Protective carrying bag
• Set de cabluri de testare (rosu si negru)
• 2 AAA batteries (pre-installed or included separately)

Image 3.1: The BENNING CM 2-1 multimeter shown with its protective carrying bag and test leads.

4. Produs terminatview

The BENNING CM 2-1 features a compact design with a clear digital display, a rotary function switch, and control buttons for various measurement modes.

4.1. Comenzi și afișaj

• Clamp Falca: Pentru măsurarea curentului AC/DC fără contact.
• Comutator rotativ: Selects measurement functions (OFF, LoZ, AutoV, V~, V-, Hz, Ω, A~, A-).
• HOLD/MIN MAX Button: Freezes the current reading or displays minimum/maximum values.
• AC/DC HFR/ZERO Button: Toggles between AC/DC current, activates the low pass filter (HFR), or zeros the DC current reading.
• Afişa: Digital readout for measurement values, units, and indicators.
• Input Jacks (COM, VΩ): Pentru conectarea cablurilor de testare pentru volumtage, resistance, and other measurements.

5. Configurare

5.1. Instalarea bateriei

The BENNING CM 2-1 requires 2 AAA batteries. These are typically included with the device.

1. Asigurați-vă că multimetrul este oprit.
2. Localizați compartimentul bateriei în spatele dispozitivului.
3. Folosiți o șurubelniță pentru a deschide capacul compartimentului bateriei.
4. Introduceți cele 2 baterii AAA, respectând polaritatea corectă (+/-) așa cum este indicată în interiorul compartimentului.
5. Puneți la loc capacul compartimentului bateriei și fixați-l cu șurubul.

6. Instrucțiuni de utilizare

6.1. Măsurarea curentului AC/DC (Clamp)

To measure AC or DC current without breaking the circuit:

1. Turn the rotary switch to the “A~” or “A-” position.
2. Press the AC/DC HFR/ZERO button to select AC or DC current if necessary. For DC current, press and hold to zero the display before measurement.
3. Deschide clamp jaw and enclose a single conductor. Ensure the jaw is fully closed.
4. Citiți valoarea curentă de pe afișaj.

Image 6.1: The multimeter measuring current by clamping around a single conductor in an electrical panel.

Image 6.2: A close-up of the BENNING CM 2-1 displaying a current measurement of 10.07 A.

6.2. AC/DC Voltage Măsurare

Pentru a măsura volul AC sau DCtage:

1. Insert the red test lead into the VΩ jack and the black test lead into the COM jack.
2. Turn the rotary switch to the “V~” for AC voltage or “V-” for DC voltage.
3. Conectați sondele de testare la circuitul sau componenta care urmează să fie măsurată.
4. Citiți voltage valoarea pe display.

Image 6.3: The multimeter measuring voltage using test leads connected to terminals within an electrical cabinet.

Image 6.4: A close-up of the BENNING CM 2-1 displaying a voltage measurement of 124.00 V.

6.3. AutoV Function (LoZ)

The AutoV function with low input impedance (LoZ) helps to suppress 'ghost voltages' or 'reactive voltages' that can appear on unused wires or open circuits due to capacitive coupling. To use:

1. Insert the red test lead into the VΩ jack and the black test lead into the COM jack.
2. Turn the rotary switch to the “LoZ” position. The meter will automatically detect AC or DC voltage.
3. Connect the test probes across the circuit.
4. Citiți voltage valoarea pe display.

6.4. Low Pass Filter (HFR)

The HFR (High Frequency Rejection) low pass filter is used for stable and accurate measurements on variable frequency drives (VFDs) or other noisy electrical environments. To activate:

1. Select the desired AC current (A~) or AC voltage (V~) function.
2. Press and hold the AC/DC HFR/ZERO button until “HFR” appears on the display.
3. Proceed with your measurement as usual. The filter will suppress high-frequency noise components.

7. Întreținere

7.1. Curatenie

Ștergeți carcasa cu reclamăamp o lavetă și un detergent blând. Nu utilizați substanțe abrazive sau solvenți. Asigurați-vă că dispozitivul este complet uscat înainte de utilizare.

7.2. Înlocuirea bateriei

When the low battery indicator appears on the display, replace the batteries promptly to ensure continued accurate operation. Refer to Section 5.1 for battery installation instructions.

8. Depanare

• Fără afișare: Verificați instalarea și încărcarea bateriilor. Înlocuiți bateriile dacă este necesar.
• Citiri incorecte: Ensure correct function and range are selected. Check test lead connections. Verify the clamp jaw is fully closed for current measurements.
• “OL” on Display: Indicates an overload (measurement exceeds the selected range). Select a higher range or ensure the input is within the device's specifications.
• Citiri instabile: Ensure good contact with test probes. For current measurements, ensure only one conductor is within the clamp jaw. Consider using the HFR function in noisy environments.

9. Specificații

10. Garanție și asistență

BENNING products are manufactured to high-quality standards. For specific warranty information, please refer to the documentation provided with your purchase or visit the official BENNING website. For technical support, service, or inquiries, please contact your local BENNING distributor or customer service department.