1. Introduzione
The VTSYIQI ETCR007 AC/DC Clamp Leakage Current Sensor is designed for precise measurement of AC/DC current and leakage current. It operates under line voltages up to 600V. This device utilizes advanced CT technology and digital integration for accurate, non-contact current measurement. It is suitable for various applications including power analysis, electrical testing, industrial maintenance, and scientific research.
This manual provides essential information for the safe and effective use of your ETCR007 sensor. Please read it thoroughly before operation.
2. Caratteristiche del prodotto
- Funzione: Measures AC/DC current and leakage current.
- Metodo di misurazione: Clip-on CT, non-contact measurement.
- Clamp Misurare: φ7 mm.
- Intervallo di input: 0mA to 60.0A AC/DC.
- Volume di uscitatage: Selectable 10mV/A or 100mV/A.
- Risoluzione: 1mA AC/DC.
- Precisione: ±3%FS (at 23°C ±5°C, below 5%RH).
- Errore di fase: ≤3° (AC 50Hz/60Hz; 23°C ±2°C).
- Gamma di frequenza: AC: 45Hz-400Hz; DC: DC-100kHz.
- Interfaccia di uscita: BNC plug.
- Alimentazione elettrica: 9V battery (6LR61/6F22) or external power supply.
- Standard di sicurezza: Complies with IEC1010-1, IEC1010-2-032, Pollution level 2, CAT ΙΙΙ (600V).
3. Informazioni sulla sicurezza
To ensure safe operation and prevent electric shock or damage to the device, please observe the following safety precautions:
- Always disconnect the line being tested before opening the clamp sensor housing.
- Do not use the sensor on circuits exceeding AC600V line voltage.
- Assicurarsi che il vano batteria sia ben chiuso durante il funzionamento.
- Do not operate the device in wet environments or if it appears damaged.
- Refer to the applicable safety rules: IEC1010-1, IEC1010-2-032, Pollution level 2, CAT ΙΙΙ (600V).
- Keep the device away from strong electromagnetic fields to avoid measurement interference.
4. Contenuto della confezione
Verificare che tutti gli articoli siano presenti e integri al momento del disimballaggio:
- AC/DC Clamp Leakage Current Sensor (1 piece)
- 9V Battery (6F22, 1 piece)
- User Manual / Warranty Card / Certification (1 copy)

Image 1: The VTSYIQI ETCR007 clamp sensor, output cable, and user manual, shown partially in its packaging box.

Image 2: The VTSYIQI ETCR007 clamp sensor, its attached cable, and the user manual, displayed outside of the product box.
Video 1: An unboxing video demonstrating the contents of the VTSYIQI ETCR007 package, including the clamp sensor and accessories.
5. Impostazione
5.1 Installazione della batteria
- Individuare il coperchio del vano batteria sul retro del sensore.
- Open the cover and insert the provided 9V (6F22) battery, ensuring correct polarity.
- Chiudere saldamente il coperchio del vano batterie.
5.2 Connecting the Output Wire
The sensor comes with an integrated output cable. The core wire provides the signal positive output, and the shielding wire serves as the signal ground. Connect the BNC plug of this cable to a compatible measuring instrument (e.g., digital multimeter, oscilloscope, power quality analyzer).

Immagine 3: Un dettaglio view of the BNC connector at the end of the sensor's output cable, ready for connection to a measuring device.
6. Funzionamento
6.1 Powering On and Range Selection
- Locate the POWER switch on the sensor.
- Slide the switch to select the desired output range: 10mV / A or 100mV / A. The "OFF" position powers down the device.
- The selected range determines the output voltage per ampere of measured current. For example, 100mV/A means 100mV output for every 1A of current.

Immagine 4: Un primo piano view of the sensor's control panel, showing the power switch with 10mV/A, 100mV/A, and OFF positions.
6.2 Calibrazione zero
Before taking measurements, especially for DC current or leakage current, it is crucial to perform a zero calibration to eliminate external electric field interference and ensure accuracy.
- Assicurarsi che non vi sia corrente che scorre attraverso il clamp mascella.
- Locate the ZERO adjustment knob (often a rotary knob) on the sensor.
- Rotate the knob until the connected measuring instrument displays zero current.

Immagine 5: Un dettaglio view del clamp jaw and the area where the zero adjustment knob is typically located, indicated by a yellow arrow symbol.
6.3 Esecuzione delle misurazioni
- Aprire il clamp mascella premendo il grilletto.
- Place the wire carrying the current to be measured inside the center of the clamp jaw. Ensure only one conductor is within the jaw for accurate measurement.
- Rilasciare il grilletto per chiudere la clamp stringere saldamente la ganascia attorno al conduttore.
- Read the current value from your connected measuring instrument, applying the selected output ratio (e.g., if 100mV/A is selected and the instrument reads 500mV, the current is 5A).
- For optimal accuracy, ensure the tested wire is positioned in the jaw's center.

Immagine 6: Prospettiva lateralefile of the VTSYIQI ETCR007 clamp sensor, showing the ergonomic design for gripping and clamping around a conductor.
7. Specifiche
| Parametro | Valore |
|---|---|
| Funzione | Measurement of AC/DC current, leakage current |
| Alimentazione elettrica | 9V Battery (6LR61/6F22), or external power supply |
| Durata della batteria | Circa 100 ore di utilizzo continuo |
| Modalità di prova | Clip-on CT, non-contact measurement |
| Clamp Misurare | φ7mm |
| Intervallo di input | 0mA - 60.0A AC/DC |
| Volume di uscitatage | 10mV/A; 100mV/A (corresponding) |
| Gamma di uscita | 1V peak max |
| Risoluzione | 1mA AC / DC |
| Precisione | ±3%FS (23°C ±5°C, below 5%RH) |
| Errore di fase | ≤3° (AC 50Hz/60Hz; 23°C ±2°C) |
| Calibrazione | Adjust ZERO to calibrate |
| Lunghezza del filo di uscita | 2m |
| Dimensioni (L x P x A) | 168 mm × 65 mm × 34 mm |
| Frequenza (CA) | 45Hz - 400Hz |
| Frequency (DC) | DC - 100kHz |
| Posizione di prova | Tested wire in the jaw center |
| Linea Voltage | AC600V |
| Peso | 170 g (batteria inclusa) |
| Corrente di lavoro | 5mA |
| Temperatura di lavoro | -10°C a 50°C |
| Umidità di lavoro | Sotto 80% RH |
| Temperatura di conservazione | -10°C a 60°C |
| Umidità di stoccaggio | Sotto 70% RH |
| Forza isolante | AC3700V/rms (between alloy of clamp and housing) |
| Applicable Safety Rules | IEC1010-1, IEC1010-2-032, Pollution level 2, CAT ΙΙΙ (600V) |

Image 7: The back of the sensor, displaying a product label with model information, specifications, and a barcode (00770112).
8. Manutenzione
- Pulizia: Use a soft, dry cloth to clean the sensor. Do not use abrasive cleaners or solvents.
- Magazzinaggio: When not in use for extended periods, remove the battery to prevent leakage. Store the device in a dry environment, away from direct sunlight and extreme temperatures.
- Sostituzione della batteria: Replace the 9V battery when the power indicator light dims or the device fails to power on.
- Calibrazione: Regular calibration by a qualified technician is recommended to maintain measurement accuracy, especially after prolonged use or if accuracy is suspected to have drifted.
9. Risoluzione Dei Problemi
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Il dispositivo non si accende | Batteria scarica o installata in modo errato | Controllare la polarità della batteria e sostituirla con una nuova batteria da 9 V. |
| Letture imprecise |
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| Nessun segnale di uscita |
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10. Garanzia e supporto
This VTSYIQI ETCR007 AC/DC Clamp Leakage Current Sensor comes with a Garanzia di 1 anno dalla data di acquisto, coprendo i difetti di materiali e di fabbricazione in condizioni di normale utilizzo.
For technical support, warranty claims, or service inquiries, please contact the manufacturer:
- Produttore: VETUS INSTRUMENTS
- E-mail di contatto: ericbai@vetusgroup.cn
Si prega di conservare la ricevuta d'acquisto come prova d'acquisto ai fini della garanzia.