Misuratore di portata automatico Uni-T UT18DtageTester

1. Introduzione

The Uni-T UT18D is a versatile automatic range voltage tester designed for measuring AC and DC voltage, including three-phase AC current. It features three-phase AC power indicator phase, RCD testing, single-pole measurement (to identify live/neutral lines), self-check, and battery-free detection capabilities. This device is suitable for professional electricians and DIY enthusiasts for various electrical testing needs.

Figure 1: Uni-T UT18D Voltage Tester with highlighted features.

2. Informazioni sulla sicurezza

Always adhere to local and national safety regulations when working with electrical systems. This device is rated CAT III 690V and CAT IV 600V, and has an IP65 waterproof rating, ensuring safety under specified conditions. However, proper precautions must always be taken.

• Si presuppone sempre che i circuiti siano sotto tensione finché non viene dimostrato il contrario.
• Wear appropriate Personal Protective Equipment (PPE), such as insulated gloves and safety glasses.
• Non utilizzare il dispositivo se appare danneggiato o funziona in modo anomalo.
• Non superare il volume massimotage le classificazioni specificate per il dispositivo.
• Ensure the test probes are securely connected and in good condition before use.

Figure 2: Safety certifications and dimensions of the UT18D.

3. Prodotto finitoview

The UT18D features a robust design with clear indicators for ease of use. Key components include:

• Test Pen Caps: Protective covers for the test probes.
• Test Pens L1 & L2: Probes for making electrical contact.
• Torcia elettrica: Luce integrata per illuminare le aree di lavoro buie.
• Voltage Indication (LED): LED bar graph for quick voltage level reference.
• Schermo LCD: Large screen for precise voltage readings and other information.
• Pulsante di prova RCD: Avvia il test del dispositivo di corrente residua.
• Flashlight/Self-Inspection Button: Activates the flashlight and performs self-inspection.
• Hold Mode/Backlight Button: Freezes the display reading; long press activates backlight.
• Coperchio della batteria: Access point for battery replacement.

Figure 3: Labeled components of the UT18D.

4. Impostazione

4.1 Installazione della batteria

The UT18D requires 2 AAA batteries for operation. These batteries are typically not included with the device.

1. Individuare il coperchio della batteria sul retro del dispositivo.
2. Utilizzare un cacciavite per aprire il coperchio della batteria.
3. Inserire 2 batterie AAA, assicurandosi della corretta polarità (+/-).
4. Chiudere saldamente il coperchio della batteria.

The device features an automatic power-off function to conserve battery life and can perform basic voltage detection without batteries, though full functionality like continuity testing requires them.

5. Istruzioni per l'uso

5.1 CA/CC voltage Misurazione

The UT18D automatically detects AC/DC voltage within the 12V to 690V range.

1. Remove the protective caps from the test probes.
2. Connect the test probes to the circuit or component you wish to measure.
3. il volumetage level will be displayed on the LCD, and the corresponding LEDs will illuminate.

5.2 Prova di continuità

The continuity test function requires batteries to be inserted and in good condition. Ensure the circuit under test is not live.

1. Assicurarsi che il circuito sia disattivato.
2. Collegare le sonde di prova al circuito o al componente.
3. A buzzer will sound, and an LED will illuminate to confirm continuity.

Figura 4: Esecuzione di un test di continuità.

5.3 RCD Test (Residual Current Device)

The RCD test function detects leakage protective switches. This function should NOT be used in 110V electrical systems.

1. Connect the test probes to the circuit where an RCD is present.
2. Press the RCD test button.
3. Observe if the RCD trips, indicating proper function.

Figure 5: Performing an RCD test.

5.4 Phase Sequence Test

Questa unità può determinare la rotazione delle fasi all'interno di un'alimentazione trifase.

1. Connect the test probes to the three-phase lines as indicated by the device or diagram.
2. The display will indicate the phase rotation (e.g., R for clockwise, L for counter-clockwise).

Figure 6: Phase Rotation Test procedure.

5.5 Single-Pole Measurement

The single-pole measurement allows identification of live or neutral lines using a single probe.

1. Touch one test probe to the conductor.
2. The device will indicate if the line is live (phase) or neutral.

5.6 Torcia e retroilluminazione

Activate the built-in flashlight by pressing the dedicated button to illuminate dark work areas. A long press of the Hold button may activate the LCD backlight for improved visibility in low light conditions.

Figure 7: Flashlight feature in use.

6. Manutenzione

To ensure the longevity and accuracy of your UT18D voltage tester, follow these maintenance guidelines:

• Pulizia: Pulire il dispositivo con un panno asciutto e morbido. Non utilizzare detergenti abrasivi o solventi.
• Magazzinaggio: Conservare il dispositivo in un luogo fresco e asciutto, lontano dalla luce solare diretta e da temperature estreme.
• Sostituzione della batteria: Replace batteries promptly when the low battery indicator appears on the LCD. Remove batteries if the device will not be used for an extended period.
• Resistenza all'acqua: The UT18D has an IP65 waterproof rating, providing protection against dust and water jets. While it is resistant, avoid submerging the device or exposing it to high-pressure water.

Figura 8: Funzione di impermeabilità IP65.

7. Risoluzione Dei Problemi

If you encounter issues with your UT18D, consider the following:

• Il dispositivo non si accende: Controllare che le batterie siano installate correttamente e abbiano una carica sufficiente. Sostituirle se necessario.
• Letture incoerenti: Ensure proper contact between the test probes and the circuit. Verify that the circuit conditions are within the device's specified operating range.
• Nessuna indicazione di continuità: Confirm that batteries are installed and in good condition. Ensure the circuit is de-energized before testing continuity.

For persistent issues, refer to the detailed specifications or contact customer support.

8. Specifiche

9. Garanzia e supporto

For warranty information, technical support, or service inquiries, please contact Uni-T customer service directly or visit the official Uni-T websito. Conservare la ricevuta d'acquisto come prova d'acquisto per eventuali reclami in garanzia.