ZOYI ZT111 Digital Multimeter

1. Introducció

The ZOYI ZT111 is a professional auto-ranging digital multimeter designed for accurate and reliable electrical measurements. Featuring a 9999-count display and True RMS capabilities, it is suitable for a wide range of applications in electrical testing, electronics, and DIY projects. This manual provides essential information for safe and effective use of your multimeter.

2. Informació de seguretat

WARNING: To prevent electric shock or personal injury, and to prevent damage to the meter or to the equipment under test, read all safety information carefully before using the meter.

• Always ensure the test leads are in good condition and properly connected to the correct input jacks for the measurement being performed.
• No apliqueu més del volum nominaltage, as marked on the meter, between terminals or between any terminal and earth ground. The ZT111 features 550V high-voltage protection (except for current gear).
• Tingueu molta precaució quan treballeu amb voltagper sobre de 30 V CA RMS, 42 V pic o 60 V CC. Aquest volumtagsuposen un risc de xoc.
• 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.
• To prevent damage or injury, install quick-acting fuses with amp/volt ratings shown in the manual.
• No utilitzeu el mesurador si sembla danyat o si la carcassa està oberta.
• No feu servir el mesurador al voltant de gas, vapor o pols explosius.
• Remove the test leads from the meter before opening the battery cover or meter case.
• Substituïu la bateria tan bon punt aparegui l'indicador de bateria baixa per garantir lectures precises.

3. Producte acabatview

3.1 Característiques clau

• Automatic/Manual Range selection
• True RMS measurement for accurate readings on non-sinusoidal waveforms
• 550 V d'alt voltage protection (except for current gear)
• Computer self-calibration design
• 9999-count high-precision display
• Backlight display for visibility in low-light conditions
• Anti-break kickstand for convenient hands-free operation
• Data retention (HOLD function)
• Automatic shutdown to conserve battery life
• Funció de mesura de temperatura
• NCV (vol sense contacte).tage) induction measurement function
• 10A current measurement capability
• 17 distinct functions (gear modes)

3.2 Components

The ZOYI ZT111 Digital Multimeter consists of the following main components:

1. Pantalla LCD: Mostra lectures de mesura, unitats i indicadors de funció.
2. Botons de funció:
   • RANGE/AUTO: Alterna entre els modes de rang automàtic i de rang manual.
   • APAGAR: Turns the device off.
   • SEL/HOLD: Selects sub-functions within a rotary switch position (e.g., AC/DC, Diode/Continuity) and activates/deactivates data hold.
3. Interruptor rotatiu: Used to select the desired measurement function (e.g., Voltage, Current, Resistance, Capacitance, NCV, Temperature).
4. Preses d'entrada:
   • COM: Terminal comú per a totes les mesures (connecteu el cable de prova negre).
   • VΩHz-T: Entrada per a Voltage, Resistance, Frequency, Diode, Continuity, Capacitance, and Temperature measurements (connect red test lead).
   • mAµA: Entrada per a mil·ligramsampere i microampmesures de corrent (connecteu el cable de prova vermell).
   • 10A MAX: Input for high current (up to 10A) measurements (connect red test lead).
5. Suport de peu: Located on the back, allows the multimeter to stand upright for easier viewing.

4. Configuració

4.1 Instal·lació de la bateria

The ZOYI ZT111 Multimeter requires two 1.5V AAA batteries (not included). Follow these steps to install or replace the batteries:

1. Assegureu-vos que el multímetre estigui apagat i desconnecteu tots els cables de prova dels endolls d'entrada.
2. Localitzeu la tapa del compartiment de la bateria a la part posterior del multímetre.
3. Feu servir un tornavís per afluixar el(s) cargol(s) que fixen la tapa de la bateria.
4. Traieu la tapa de la bateria.
5. Introduïu dues piles AAA d'1.5 V, observant la polaritat correcta (+ i -) tal com s'indica a l'interior del compartiment.
6. Torneu a col·locar la tapa de la bateria i estrenyeu el(s) cargol(s).

4.2 Engegada inicial

After installing the batteries, turn the rotary switch from the "OFF" position to any desired measurement function to power on the multimeter. The display will light up, and the multimeter will be ready for use.

5. Instruccions de funcionament

Before making any measurement, ensure the test leads are correctly connected to the appropriate input jacks and the rotary switch is set to the desired function.

5.1 General Measurement Steps

1. Introduïu el cable de prova negre al connector COM.
2. Insert the red test lead into the appropriate input jack for your measurement (VΩHz-T for voltage, resistance, etc.; mAµA or 10A MAX for current).
3. Gireu l'interruptor rotatiu a la funció desitjada.
4. If a function has multiple modes (e.g., AC/DC voltage, Diode/Continuity), press the SEL/HOLD botó per anar-hi ciclant.
5. Connecteu els cables de prova al circuit o component que s'està provant.
6. Llegiu el valor de mesura a la pantalla LCD.
7. To hold the current reading on the display, press the SEL/HOLD button briefly. Press again to release.
8. To turn off the multimeter, turn the rotary switch to the "OFF" position or wait for automatic shutdown.

5.2 Funcions de mesura específiques

• VoltagMesura (CA/CC): Set the rotary switch to V~ (AC) or V- (DC). Use the SEL/HOLD button to switch between AC and DC if needed. Connect leads in parallel with the circuit.
• Mesura de corrent (CA/CC): Set the rotary switch to A~ (AC) or A- (DC) for 10A, or mA~ (AC) or mA- (DC) for lower currents. Ensure the red lead is in the correct current jack (10A MAX or mAµA). Connect leads in series with the circuit.
• Mesura de la resistència: Set the rotary switch to Ω. Connect leads across the component.
• Mesura de la capacitat: Set the rotary switch to the capacitance symbol (e.g., -||-). Ensure capacitors are discharged before testing.
• Mesura de freqüència: Set the rotary switch to Hz.
• Diode Test / Continuity Test: Set the rotary switch to the diode/continuity symbol. Press SEL/HOLD to switch between diode test and continuity buzzer.
• NCV (vol sense contacte).tage) Detecció: Set the rotary switch to NCV. Bring the top of the multimeter near an AC voltage source. The display will show dashes and an audible beep will indicate voltage presència.



• Mesura de la temperatura: Set the rotary switch to °C/°F. Connect the K-type thermocouple probe to the VΩHz-T and COM jacks, observing polarity.

6. Especificacions

The following tables detail the technical specifications of the ZOYI ZT111 Digital Multimeter:

6.1 Especificacions de mesura

6.2 General Technical Indicators

6.3 Mechanical & Environmental Specifications

7. Manteniment

7.1 Neteja

Netegeu el cas amb l'anunciamp cloth and mild detergent. Do not use abrasives or solvents. Periodically wipe the terminals with a cotton swab and detergent; a dirty terminal can affect readings.

7.2 Canvi de fusibles

If the current measurement function stops working, the fuse may need replacement. Refer to the safety information and the markings on the back of the meter for the correct fuse type and rating. Always use quick-acting fuses with the specified amp/volts classificats.

1. Assegureu-vos que el multímetre estigui apagat i desconnecteu tots els cables de prova.
2. Open the battery compartment cover as described in Section 4.1.
3. Traieu amb cura el(s) fusible(s) vell(s).
4. Install new fuse(s) of the correct type and rating.
5. Torneu a col·locar la tapa de la bateria i estrenyeu el(s) cargol(s).

7.3 Emmagatzematge

When the multimeter is not in use for an extended period, remove the batteries to prevent leakage and damage to the device. Store the multimeter in a cool, dry environment within the specified storage temperature and humidity ranges (-20~60°C, < 80% humidity).

8. Solució De Problemes

If you encounter issues with your ZOYI ZT111 Multimeter, try the following troubleshooting steps:

• Sense pantalla/Pantalla tènue: Check battery levels and replace if necessary. Ensure batteries are installed with correct polarity.
• Lectures incorrectes:
  • Verify test leads are correctly inserted into the appropriate input jacks for the selected function.
  • Ensure the rotary switch is set to the correct measurement function.
  • Comproveu si hi ha cables de prova danyats.
  • Clean input terminals if dirty.
  • For current measurements, check if the fuse is blown.
• El multímetre no s'encén: Ensure batteries are correctly installed and charged. If the issue persists, contact support.
• Apagat automàtic: This is a normal power-saving feature. Turn the rotary switch to OFF and then back to the desired function to restart.

9. Consells d'usuari

• Utilize the kickstand for hands-free operation, improving work efficiency and safety.
• The backlight feature is useful in dimly lit environments; activate it by pressing the backlight button (often integrated with RANGE/AUTO or a dedicated button).
• Always double-check your rotary switch setting and lead connections before making a measurement to avoid damaging the meter or the circuit.
• For precise measurements, especially with AC signals, the True RMS function provides more accurate readings than average-responding meters.

10. Garantia i Suport

The ZOYI ZT111 Digital Multimeter comes with a one-year warranty from the date of purchase, covering manufacturing defects. For technical support, warranty claims, or service inquiries, please contact your retailer or the manufacturer directly. Please retain your proof of purchase for warranty validation.