Irfora YAOREA YR2050 High-Precision 4-Wire Portable Milliohm Meter User Manual

1. Introduzione

The Irfora YAOREA YR2050 is a high-precision, portable 4-wire milliohm meter designed for accurate resistance measurements. This device is ideal for quick testing of wire length, resistivity, and assessing the quality of power cords for motors and transformers. Its portable design ensures ease of use in various environments.

This meter can test resistances in components such as transformers, motors, and large inductance inductors. Its high accuracy also allows for the detection of resistance in precision current-sense resistors.

2. Informazioni sulla sicurezza

• Prohibited Measurements: It is strictly prohibited to measure any live parts, such as AC or DC voltage input to the test interface. Doing so may cause severe damage to the instrument and pose a safety risk to the user.
• Battery Internal Resistance: The YR2050 meter cannot measure the internal resistance of batteries. Attempting to do so may yield inaccurate results or damage the device.
• Ambiente operativo: Use the device within the specified working temperature range of 10 ℃ to 40 ℃.
• Protezione del fusibile: The device is protected by a 0.5A fuse. Do not attempt to bypass or replace with an incorrect fuse rating.

3. Prodotto finitoview e componenti

The YAOREA YR2050 Milliohm Meter package includes the following items:

• 1 x YAOREA YR2050 Milliohm Meter
• 1 x Set of Test Clips (Red and Black)
• 1 cavo di ricarica USB

The YAOREA YR2050 Milliohm Meter with its display showing a reading, connected to a test object using the included red and black test clips.

A set of red and black test clips and a USB charging cable, essential accessories for the YAOREA YR2050 Milliohm Meter.

4. Impostazione

The YAOREA YR2050 comes with a pre-installed 2000 mAh lithium battery. Ensure the device is charged before first use. Connect the USB charging cable to the meter and a suitable USB power source.

4.1 Connecting Test Clips

1. Identify the red and black test clips.
2. Connect the red test clip to the positive (+) terminal and the black test clip to the negative (-) terminal on the meter's test interface. Ensure a secure connection for accurate readings.

5. Istruzioni per l'uso

The YAOREA YR2050 offers various measurement modes for different applications.

5.1 General Resistance Measurement

1. Accendi il dispositivo utilizzando il pulsante di accensione designato.
2. Select the appropriate measurement range if not in auto-ranging mode. Refer to the button layout image for 'range' selection.
3. Connect the test clips to the component or wire you wish to measure. Ensure good contact.
4. Leggere il valore di resistenza visualizzato sullo schermo.

Un dettagliato view of the YAOREA YR2050 Milliohm Meter's interface, highlighting the display and control buttons for menu, range, hold, and selection functions.

5.2 Wire Resistivity Measurement

This function helps determine if the wire material is pure copper by calculating its resistivity.

1. Intercept a specific length of the wire to be tested.
2. Accurately measure the diameter of the wire to calculate its cross-sectional area.
3. Enter the instrument's detection mode for resistivity measurement.
4. Input the corresponding parameters (wire length, cross-sectional area) into the device.
5. Measure the resistance of the wire using the test clips.
6. The device will calculate and display the resistivity, allowing you to determine the wire material's quality.

The YAOREA YR2050 Milliohm Meter in use, showing how to connect to a wire for resistance measurement to determine resistivity and material quality.

5.3 Transformer Winding Qualification Test

This feature allows you to check if a transformer winding meets specified resistance limits.

1. Enter the normal mode on the instrument.
2. Access the settings to open the upper and lower limits for resistance.
3. Input the desired upper and lower resistance limits for the transformer winding.
4. Connect the test clips to the transformer winding.
5. The device will measure the winding's resistance and indicate if it falls within the set limits, thus determining its qualification.

This image illustrates various applications for the milliohm meter, such as testing resistance in circuit boards, checking transformers, evaluating motors, and measuring large inductors.

6. Manutenzione

• Pulizia: Mantenere il dispositivo pulito e privo di polvere e detriti. Utilizzare un panno morbido e asciutto per la pulizia. Non utilizzare detergenti abrasivi o solventi.
• Magazzinaggio: When not in use, store the meter in a dry place, away from direct sunlight and extreme temperatures. The recommended storage temperature is -20 ℃ to 60 ℃.
• Cura della batteria: Per preservare la salute della batteria, ricaricarla regolarmente, anche se il dispositivo non viene utilizzato frequentemente.
• Clip di prova: Inspect the test clips periodically for any signs of wear or damage. Replace them if necessary to ensure accurate and safe measurements.

7. Risoluzione Dei Problemi

• Nessuna lettura/lettura irregolare:
  • Ensure test clips are securely connected to both the meter and the object under test.
  • Controllare che la batteria sia sufficientemente carica.
  • Verify that the measurement range is appropriate for the expected resistance value.
• Il dispositivo non si accende:
  • Caricare la batteria per almeno 30 minuti.
  • Assicurarsi che il pulsante di accensione sia premuto correttamente.
• Damage After Measurement:
  • If the device was connected to live voltage (AC/DC), it might be damaged. Refer to the safety information. Such damage is typically not user-repairable.

8. Specifiche