1. Introduzione
The KAIWEETS HT112B is an auto-ranging digital multimeter designed for accurate measurement of various electrical parameters. This ultra-portable device is suitable for diagnosing automotive, industrial, and household electrical issues. It features a Smart Mode for automatic measurement identification and a large LCD backlit screen for easy readability.
Image 1.1: KAIWEETS HT112B Digital Multimeter, including test leads and a protective carrying case.
2. Informazioni sulla sicurezza
Read all safety warnings and instructions before operating this device.
- This multimeter is CE & RoHS certified and features overload protection on all ranges.
- Assicurarsi sempre che i puntali di prova siano inseriti correttamente nei jack di ingresso appropriati per la misurazione da eseguire.
- Non tentare di misurare il voltagcorrenti o correnti che superano i limiti massimi specificati.
- Prestare la massima attenzione quando si lavora con circuiti sotto tensione. Alta vol.tagpossono causare gravi lesioni o la morte.
- The rubber sleeve provides additional drop protection; however, avoid dropping the device from significant heights.
- Per garantire letture accurate, sostituire tempestivamente le batterie quando compare l'indicatore di batteria scarica.
Image 2.1: The HT112B multimeter features a durable insulating rubber sleeve for enhanced safety and protection against drops.
3. Prodotto finitoview
3.1. componenti
The KAIWEETS HT112B includes the following main components:
- Digital Multimeter Unit (HT112B)
- Cavi di prova (rosso e nero)
- Carrying Tool Bag
- Button Batteries (CR2032, 2 for use, 2 for backup)
- Manuale di istruzioni
Image 3.1: The HT112B package contents, including the multimeter, test leads, carrying case, and spare batteries.
3.2. Display e pulsanti
The multimeter features a large LCD backlit screen and intuitive buttons for operation.
Image 3.2: The HT112B display indicating various measurement modes and functions.
- Pulsante di accensione: Accende/spegne il dispositivo.
- SMART FUNC Button: Activates Smart Mode or cycles through specific functions within a mode.
- Pulsante SEL: Selects between different measurement types (e.g., AC/DC voltage, resistenza/continuità).
- H / Backlight Button: Toggles data hold and backlight.
- Jack di ingresso: For connecting test leads (COM, VΩmA, A).
4. Impostazione
4.1. Installazione della batteria
The KAIWEETS HT112B uses CR2032 button batteries. The device comes with batteries pre-installed and includes spares.
- Assicurarsi che il multimetro sia spento.
- Individuare il vano batteria sul retro del dispositivo.
- Open the compartment cover using a suitable tool (e.g., small screwdriver).
- Insert the CR2032 batteries, observing the correct polarity (+/-).
- Chiudere bene il vano batterie.
Note: If the multimeter will not be used for an extended period, it is recommended to remove the batteries to prevent drainage or leakage.
4.2. Collegamento dei puntali di prova
Always connect the black test lead to the "COM" (Common) jack. Connect the red test lead to the appropriate jack based on the measurement type:
- Presa VΩmA: Per voltage, Resistance, Continuity, Capacitance, Frequency, Diode, and small Current (mA/µA) measurements.
- Un Jack: For large Current (Amperes) measurements.
Image 4.1: Correct connection of red and black test leads to the multimeter's input jacks.
5. Modalità operative e misurazioni
The HT112B offers various measurement functions, including a convenient Smart Mode.
5.1. Modalità intelligente
Upon powering on, the multimeter defaults to Smart Mode. In this mode, the device automatically identifies and measures Voltage, Resistance, and Continuity. This simplifies operation as you do not need to manually select the function.
Image 5.1: The multimeter display indicating "Auto" when operating in Smart Mode, automatically detecting the measurement type.
5.2. Selezione manuale delle funzioni
Press the "SMART FUNC" button to cycle through other measurement functions or to manually select a specific mode if Smart Mode is not desired or for specialized measurements.
5.2.1. Volumetage Misurazione (AC/DC)
Per misurare il volumetage, connect the test leads in parallel to the circuit or component. Use the "SEL" button to switch between AC and DC voltage se necessario.
Immagine 5.2: Misurazione del volume DCtage of a car battery using the HT112B multimeter.
Image 5.3: Measuring AC voltage from a standard power outlet using the HT112B multimeter.
5.2.2. Misurazione della resistenza
Ensure the circuit is de-energized before measuring resistance. Connect the test leads across the component to be measured.
5.2.3. Test di continuità
For continuity, the multimeter will emit an audible beep if the resistance between the two points is below a certain threshold, indicating a continuous path.
Image 5.4: Performing a continuity test with the HT112B multimeter, indicated by an audible alert.
5.2.4. Misurazione della corrente (CA/CC)
To measure current, the multimeter must be connected in series with the circuit. Ensure the correct input jack (mA/µA or A) is used and the circuit is within the multimeter's current rating.
Image 5.5: Measuring current in a small electronic circuit using the HT112B multimeter.
5.2.5. Misura della capacità
Discharge capacitors before measuring. Connect the test leads across the capacitor terminals.
Image 5.6: The HT112B multimeter connected to a large capacitor for capacitance measurement.
5.2.6. Misurazione della frequenza
Connect the test leads to the signal source to measure its frequency.
5.2.7. Prova del diodo
Collegare i puntali di prova al diodo. Il display mostrerà la tensione direttatage drop for a good diode.
Image 5.7: Performing a diode test with the HT112B multimeter, showing the test leads connected to a diode.
5.2.8. Vol. senza contattotage (NCV) / Live Wire Detection
La funzione NCV consente il rilevamento della tensione alternatatage without direct contact. Hold the top of the multimeter near the conductor. The device will indicate the presence of voltage.
Image 5.8: The HT112B multimeter detecting non-contact voltage vicino a una presa elettrica.
6. Manutenzione
6.1. Pulizia
Pulisci il multimetro casing con annuncioamp panno. Non utilizzare detergenti abrasivi o solventi. Assicurarsi che il dispositivo sia asciutto prima dell'uso.
6.2. Sostituzione della batteria
When the low battery indicator appears on the display, replace the CR2032 batteries as described in Section 4.1. Timely battery replacement ensures accurate readings and proper device function.
6.3. Sostituzione del fusibile
If the current measurement function stops working, the internal fuse may need replacement. Refer to the detailed instructions in the full manual for fuse access and replacement procedures. Always use a fuse with the specified rating.
Image 6.1: The multimeter display showing a "FUSE" indicator, suggesting the need for fuse inspection or replacement.
7. Risoluzione Dei Problemi
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Il multimetro non si accende. | Batterie scariche o installate in modo errato. | Controllare la polarità delle batterie; sostituire le batterie. |
| Letture imprecise. | Low battery, incorrect mode selection, or poor test lead connection. | Replace batteries, verify mode, ensure secure lead connection. |
| Nessuna misurazione attuale. | Fusibile bruciato. | Replace the internal fuse with the correct rating. |
| Il display è scuro o vuoto. | Batteria scarica o retroilluminazione spenta. | Replace batteries, press the backlight button. |
8. Specifiche
| Caratteristica | Dettaglio |
|---|---|
| Marca | KAIWEET - dolciumi |
| Numero di modello | Modello HT112B |
| Display | 6000 Counts, Digital LCD with Backlight |
| Tipo di misurazione | TRMS (vero valore efficace) |
| Fonte di alimentazione | Battery Powered (CR2032 x 2) |
| Valutazione di sicurezza | CATIII 600V |
| Conformità | Certificazione CE e RoHS |
| Peso dell'articolo | 269 g (approx. 9.5 Ounces) |
| Dimensioni | 16.76 x 9.65 x 5.08 cm (Confezione) |
| Componenti inclusi | Multimeter, Storage Bag, Test Leads, Batteries, Manual |
9. Garanzia e supporto
KAIWEETS fornisce un Servizio post-vendita di 36 mesi E supporto tecnico a vita for the HT112B Digital Multimeter. For any concerns or assistance, please contact KAIWEETS customer support.
Contact information can typically be found on the official KAIWEETS websito o tramite la tua piattaforma di acquisto.
