1. Introducció
The UNI-T UT89X/UT89XD series are reliable hand-held 35/6 bit digital multimeters featuring true RMS sine wave measurement. These devices are capable of measuring a wide range of electrical parameters including Max. 1000V DC/AC voltage, Max. 20A DC/AC current, resistance, capacitance, frequency, diode, hFE, continuity, and NCV (Non-Contact Voltage). They excel at quickly and accurately distinguishing between neutral and live wires. The UT89X model includes temperature measurement and live wire detection with a single test lead, while the UT89XD model offers an additional LED test function. Both models feature a bi-color durable case, modern exterior, and multiple functions designed for user convenience and safety.
The UT89XE model is a 20000-count true RMS, high-resolution, precise measurement, and fully functional manual shift multimeter. It expands on conventional functions by adding a conductivity measurement function (range of 0.1~200nS, converted resistance of 5 Ω -10G Ω), significantly extending the resistance measurement range. Designed according to CAT II 1000V/CAT III 600V safety ratings, it includes measurement overvoltage and overcurrent alarm prompts and a high voltage mismeasurement protection device for all gears. This series is widely used in the maintenance and repair of power and electrical equipment across various fields such as railways, factories, shopping malls, and property management, making it an essential testing tool for electronic and electrical engineers and technicians.
2. Informació de seguretat
Always observe safety precautions when using the multimeter. Incorrect use can lead to electric shock or damage to the instrument. Read and understand all safety information before operation.
- No apliqueu més del volum nominaltage, tal com està marcat al comptador, entre els terminals o entre qualsevol terminal i terra.
- Tingueu precaució quan treballeu amb voltagestà per sobre de 60 V DC o 30 V AC RMS. Tal voltagsuposen un risc de xoc.
- Before making current measurements, ensure the instrument fuses are intact and the test leads are connected to the correct input terminals.
- Desconnecteu sempre l'alimentació del circuit i descarregueu totes les emissions d'alt volum.tage condensadors abans de provar la resistència, la continuïtat, els díodes o la capacitat.
- No utilitzeu el mesurador si sembla danyat o si l'aïllament dels cables de prova està compromès.
- Ensure the rotary switch is in the correct position for the desired measurement before connecting the test leads to the circuit.
- Replace the battery and fuses only with the specified type and rating.
3. Contingut del paquet
En obrir el paquet, comproveu que tots els elements que s'enumeren a continuació hi són presents i no estan danyats:
- Digital Multimeter (Main Unit)
- Cables de prova (vermell i negre)
- Manual d'usuari
- Indicator Description Card
- Temperature Probe (for UT89X only)
- Protective Pouch (Gift)
- Screwdrivers (Gift)
Si falta algun article o està malmès, poseu-vos en contacte amb el vostre proveïdor immediatament.
Image: Package contents for UT89X/UT89XD series, showing the multimeter, test leads, temperature probe, user manual, and additional accessories.
4. Producte acabatview i Característiques
The UNI-T Digital Multimeter series offers a robust design and a comprehensive set of features for various electrical measurements.
Característiques principals:
- Mesurament RMS real: Proporciona lectures precises per a formes d'ona no sinusoïdals.
- Interval automàtic: Selecciona automàticament el rang de mesura adequat.
- Retroil·luminació LCD: Assegura la llegibilitat en entorns amb poca il·luminació.
- Apagada automàtica: Conserva la durada de la bateria.
- Conservació de dades: Congela la lectura mostrada per facilitar el registre.
- On-off Beep: Audible indication for continuity tests.
- Duty Cycle Measurement: For analyzing pulse width modulation signals.
- Protecció d'entrada: Safeguards the device against overloads.
- Impedància de sortida: Specified for voltage mesures.
- Analog Strip: Provides a quick visual indication of changing readings.
- Llanterna: Integrated for working in dark areas.
- C duradorasing: The outer red protective layer is made of high-quality rubber, providing shockproof and dustproof protection.
Imatge: Més deview of key features and icons on the multimeter display.
Image: The multimeter's durable and anti-fall casing.
Imatge: Detallada view of the multimeter's display and controls.
5. Configuració
5.1. Instal·lació de la bateria
This multimeter requires a 9V battery (not included). To install or replace the battery:
- Assegureu-vos que el multímetre estigui apagat i desconnecteu tots els cables de prova dels terminals d'entrada.
- Localitzeu la tapa del compartiment de la bateria a la part posterior del multímetre.
- Feu servir un tornavís per afluixar el(s) cargol(s) de la tapa de la bateria.
- Remove the cover and insert a new 9V battery, observing the correct polarity.
- Torneu a col·locar la tapa de la bateria i estrenyeu el(s) cargol(s).
5.2. Connexió dels cables de prova
Always connect the black test lead to the 'COM' (common) terminal. Connect the red test lead to the appropriate input terminal based on the measurement you intend to perform:
- Per al voltage, Resistance, Capacitance, Frequency, Diode, Continuity, and Temperature measurements, connect the red lead to the 'VΩHzCAP' terminal.
- Per mil·liampere (mA) or microampere (µA) current measurements, connect the red lead to the 'mAµA' terminal.
- Per ampere (A) current measurements (up to 20A), connect the red lead to the '20A' terminal.
6. Instruccions de funcionament
Before taking any measurement, ensure the test leads are correctly connected and the rotary switch is set to the desired function.
6.1. NCV (No-Contact Voltage) Mesura
La funció NCV permet la detecció sense contacte del volum de CA.tage, useful for identifying live wires without direct contact. The multimeter provides visual indications based on voltagnivells e:
- Weak Sensing (12VAC-48VAC): El LED verd parpellejarà.
- Moderate Sensing (48VAC-220VAC): The yellow LED will flash.
- Strong Sensing (>220VAC): The red LED will illuminate continuously.
Image: NCV detection with varying LED responses based on AC voltage força.
Video: Demonstrates the NCV function, showing LED indicators for different voltage levels and live/neutral wire distinction.
6.2. Live Wire Detection (UT89X only)
The UT89X model can detect live wires using a single test lead:
- When the test lead is connected to a live wire (>60VAC), the screen will display "LIVE", and the red LED will flash with an audible alarm.
- When connected to a neutral wire or a voltage below 60VAC, the meter will not respond.
Image: Live wire detection using a single test lead, showing responses for live and neutral wires.
6.3. LED Test (UT89XD only)
The UT89XD model includes an LED test function to check the performance of LEDs:
- If the LED is normal and the forward voltage is within 11.1VDC, the green LED on the multimeter will illuminate continuously.
- If the LED is an open circuit, the screen will display "OL", and the red LED will illuminate continuously.
Image: LED test function, indicating normal and open circuit conditions.
6.4. Prova de continuïtat
Per realitzar una prova de continuïtat:
- Set the rotary switch to the continuity function (usually indicated by a diode symbol with sound waves).
- Connect the test leads across the circuit or component to be tested.
- If the resistance is ≤30Ω, the green LED will illuminate continuously, and an audible beep will sound.
- If the resistance is >30Ω, the red LED will illuminate continuously.
- If the circuit is open or the resistance is out of range, the display will show "OL", and no LED will light up.
Image: Continuity test indications based on resistance.
6.5. Prova de díodes
Per provar un díode:
- Set the rotary switch to the diode test function (indicated by a diode symbol).
- Connecteu el cable de prova vermell a l'ànode i el cable de prova negre al càtode del díode.
- For a normal diode (forward voltage between 0.12VDC and 2VDC), the green LED will illuminate continuously.
- If the diode is broken (forward voltage <0.12VDC), the red LED will illuminate continuously.
- If the diode is open or reverse biased, the display will show "OL", and no LED will light up.
Image: Diode test indications based on forward voltage.
6.6. Prova de transistors hFE
To test the current magnification (hFE) of a transistor:
- Set the rotary switch to the hFE function.
- Insert the transistor leads into the appropriate hFE test sockets (E, B, C for NPN or PNP).
- If the current magnification (P) is >50, the green LED will illuminate continuously.
- If the current magnification (P) is <50, the yellow LED will illuminate continuously.
Image: Transistor hFE test indications.
6.7. Prova de capacitat
The multimeter can perform fast charge measurements for large capacitors (up to 100mF):
- Set the rotary switch to the capacitance function.
- Connecteu els cables de prova a través del condensador.
- If the capacitance is less than 20pF, no LED will light up.
- While the capacitor is charging, the yellow LED will illuminate continuously.
- Once charging is complete, the green LED will illuminate continuously.
Image: Capacitance test indications during charging and completion.
6.8. Voltage i Mesura de corrent
The multimeter can measure AC/DC voltage and current up to 1000V and 20A respectively. It provides overload indications:
- Voltage Overload: If DCV ≥1000V or ACV ≥1000V, the red LED will illuminate continuously. Otherwise, no LED will light up.
- Sobrecàrrega actual: If current is ≥10A, the red LED will illuminate continuously. Otherwise, no LED will light up.
Image: Voltage measurement overload indication.
Image: Current measurement overload indication.
6.9. Temperature Measurement (UT89X only)
The UT89X model can measure temperature using the included temperature probe:
- Connect the temperature probe to the appropriate input terminals.
- Set the rotary switch to the temperature function.
- The measurement range is -40°C to 1000°C (-40°F to 1832°F).
- Short press the SEL/REL button to switch between Celsius (°C) and Fahrenheit (°F).
Image: Temperature measurement function in use, showing the range and probe connection.
7. Manteniment
7.1. Atenció general
- Mantingueu el multímetre sec. Si es mulla, eixugueu-lo immediatament.
- Use and store the multimeter in normal temperature environments. Extreme temperatures can shorten the life of electronic devices.
- Handle the multimeter gently and carefully. Dropping it can damage the circuit boards and internal components.
- Keep the multimeter away from dust and dirt, which can cause premature wear of parts.
- Netegeu el multímetre amb anuncisamp drap de tant en tant per mantenir-lo nou. No utilitzeu productes químics aggressivs, dissolvents de neteja o detergents forts.
7.2. Substitució de fusibles
If the current measurement function fails, the fuse may need to be replaced. Refer to the specifications for the correct fuse type and rating. To replace a fuse:
- Assegureu-vos que el multímetre estigui apagat i desconnecteu tots els cables de prova.
- Open the battery compartment cover as described in Section 5.1.
- Carefully remove the old fuse(s) and replace with new fuse(s) of the specified type and rating.
- Torneu a col·locar la tapa de la bateria i estrenyeu el(s) cargol(s).
8. Solució De Problemes
If you encounter issues with your multimeter, refer to the following common problems and solutions:
| Problema | Causa possible | Solució |
|---|---|---|
| El comptador no s'encén | Bateria morta o instal·lada incorrectament | Check battery installation; replace with a new 9V battery. |
| No reading or "OL" displayed during measurement | Incorrect function selection; open circuit; test leads not properly connected; measurement range exceeded. | Ensure rotary switch is on correct function. Check for open circuits. Reconnect test leads securely. Select a higher range if available or verify component is within meter's range. |
| Lectures inexactes | Low battery; external interference; damaged test leads. | Replace battery. Move away from strong electromagnetic fields. Inspect and replace damaged test leads. |
| Current measurement fails | Fusible cremat. | Replace the fuse(s) as per Section 7.2. |
| NCV/Live wire detection not working | Voltage too low; incorrect mode. | Assegureu-vos voltage is within detectable range. Confirm meter is in NCV or Live mode. |
9. Especificacions
Below are the detailed specifications for the UT89X, UT89XD, and UT89XE series multimeters. Note that some features and ranges may vary slightly between models.
| Característica | UT89X | UT89XD | UT89XE |
|---|---|---|---|
| Nombre de visualitzacions | 6000 | 6000 | 20000 |
| DC Voltage | 0.1mV~1000V (±(0.5%+2)) | 0.1mV~1000V (±(0.5%+2)) | 200mV/1000V (±(0.05%+5)) |
| Vol. ACtage | 1mV~1000V (±(0.8%+5)) | 1mV~1000V (±(0.8%+5)) | 600mV/1000V (±(0.8%+25)) |
| Corrent DC | 0.01µA~20A (±(0.8%+8)) | 0.01µA~20A (±(0.8%+8)) | 2000uA/600mA/20A (±(0.5%+4)) |
| Corrent alterna | 10µA~20A (±(1.0%+12)) | 10µA~20A (±(1.0%+12)) | 600uA/600mA/20A (±(0.8%+15)) |
| Resistència | 0.1Ω~60MΩ (±(0.8%+3)) | 0.1Ω~60MΩ (±(0.8%+3)) | 600Ω/600kΩ/200MΩ (±(1.2%+50)) |
| Capacitat | 1pF~100mF (±(2.5%+20)) | 1pF~100mF (±(2.5%+20)) | 600nF/600uF/200mF (±(4%+50)) |
| Freqüència | 0.001Hz~10MHz (±(0.1%+4)) | 0.001Hz~10MHz (±(0.1%+4)) | 9.999Hz/9.999MHz (±(0.1%+4)) |
| Temperatura | -40°C~1000°C (±(2%+4)) | No such feature | 0 - 50 ℃ (Operating) |
| Mesurament de LED | No such feature | 0.01V~11.1V (±(10%)) | No such feature |
| RMS veritable | Sí | Sí | Sí |
| Prova de cable en directe | Sí | Sí | Sí |
| Prova de díode/continuïtat | Sí | Sí | Sí |
| Transistor hFE | Sí | Sí | Sí |
| Dual Range NCV Test | Sí | Sí | Sí |
| Apagat automàtic | Sí | Sí | Sí |
| Indicació de bateria baixa | Sí | Sí | Sí |
| Retenció de dades | Sí | Sí | Sí |
| Llanterna | Sí | Sí | Sí |
| Dimensions | 189 mm * 89 mm * 53 mm | 189 mm * 89 mm * 53 mm | 189 mm * 89 mm * 53 mm |
| Mode de funcionament | Rang automàtic | Rang automàtic | Rang automàtic |
| Subministraments de bricolatge | Elèctric | Elèctric | Elèctric |
| Certificació | CE, FCC, RoHS | CE, FCC, RoHS | CE, FCC, RoHS |
Image: Comprehensive specifications table for UT89X, UT89XD, and UT89XE models.
Image: Specifications comparison for UT89X and UT89XD models.
Image: Specifications for the UT890C model.
10. Consells d'usuari
- Remember that the 9V battery required for operation is not included in the package. Ensure you have one ready before first use.
- When using the NCV function, be aware of the different LED indications (green, yellow, red) to quickly assess the voltage level without direct contact.
- For accurate temperature measurements with the UT89X, ensure the temperature probe is correctly connected and the meter is set to the temperature function.
11. Garantia i Suport
This product is manufactured to high-quality standards. For any technical assistance or warranty inquiries, please refer to the contact information provided by your retailer or the official UNI-T weblloc web. Conserveu el rebut de compra com a comprovant de compra.
