Manual de instrucțiuni pentru voltmetru digital diymore 0.28" DC 100V 10A, ampermetru

1. Introducere

This manual provides detailed instructions for the installation, operation, and maintenance of the diymore 0.28" DC 100V 10A Digital Voltmeter Ammeter. This compact device is designed for precise measurement of DC voltage and current in various applications, including automotive, electric vehicles, and other electronic projects.

Image 1.1: Five diymore 0.28" Digital Voltmeter Ammeters. These meters simultaneously display voltage in blue and current in green, providing clear readings for various DC applications.

2. Caracteristicile produsului

• Afișaj dublu: Simultaneous display of voltage and current on a 0.28" digital tube with blue (voltage) and green (current) LEDs.
• Gamă largă de măsurare: Măsuri DC voltage from 0V to 100V and DC current from 0A to 10A.
• Vol. De operaretage: Requires a DC input voltage between 4V and 30V for internal operation.
• Precizie ridicată: Curent și voltage measurement accuracy of 1% (±1 digit).
• Design compact: Miniaturized panel-mount design suitable for integration into various projects.
• Aplicatii: Ideal for battery monitoring in automotive, electric cars, motorcycles, and general electronic circuit testing.

Image 2.1: A single diymore digital voltmeter ammeter. The clear 0.28" LED display shows voltage in blue and current in green, ensuring easy readability.

3. Specificatii tehnice

4. Informații de siguranță

Please read and understand all safety instructions before installing or operating the device. Failure to follow these instructions may result in electric shock, fire, or damage to the product or other equipment.

• Alimentare electrică: Asigurați volumul de lucrutage for the meter (DC 4-30V) is strictly adhered to. Exceeding 30V will damage the meter.
• Polaritate: Always observe correct polarity when connecting the power supply and measurement leads. Incorrect connections can cause damage.
• Măsurare curentă: For current measurement, the meter uses a shunt. Ensure the load common is correctly connected relative to the power supply common, especially for higher currents.
• Izolare: Ensure all connections are properly insulated to prevent short circuits.
• Mediu: Do not expose the meter to excessive moisture, dust, or extreme temperatures outside its operating range.
• Instalare profesionala: If you are unsure about any aspect of the installation, consult a qualified electrician or electronics technician.

5. Configurare și cablare

The diymore digital voltmeter ammeter requires careful wiring for both its power supply and the circuit under measurement. Refer to the wiring diagram below for proper connection.

5.1. Wiring Diagram Overview

Image 5.1: Detailed wiring diagram for the diymore voltmeter ammeter. It illustrates the connections for the meter's power supply (DC 4-30V) and the circuit being measured (DC 0-100V, 0-10A load).

The meter typically comes with two sets of wires:

• Thin Wires (Power Supply for Meter):
  • Red (thin): Positive (+) terminal for the meter's internal power supply (DC 4-30V).
  • Black (thin): Negative (-) terminal for the meter's internal power supply.
  • Yellow (thin): Voltage measurement input positive (+). This wire connects to the positive side of the circuit you want to measure voltage din.
• Thick Wires (Current Measurement):
  • Red (thick): Current input positive (+). This connects to the positive side of the load.
  • Negru (gros): Current input negative (-). This connects to the negative side of the load, completing the series circuit for current measurement.

Notă importantă: The thin black wire (meter power negative) and the thick black wire (current measurement negative) are often internally connected or share a common ground. Ensure your wiring configuration respects this to avoid short circuits or incorrect readings. The current measurement must be done in series with the load.

5.2. Etape de instalare

1. Prepare Panel Cutout: Create an appropriate rectangular cutout in your panel for the meter. The dimensions are approximately 48mm x 29mm.
2. Insert Meter: Gently push the meter into the cutout. The retaining clips on the sides will secure it. If the clips are too tight, you may need to carefully remove the PCB from the casing, insert the empty casing, and then reinsert the PCB.
3. Connect Power (Thin Wires):
   • Conectați thin red wire to the positive (+) terminal of your DC 4-30V power source.
   • Conectați thin black wire to the negative (-) terminal of your DC 4-30V power source.
4. Connect Voltage Measurement (Thin Yellow Wire):
   • Conectați thin yellow wire to the positive (+) point of the circuit where you want to measure voltage.
5. Connect Current Measurement (Thick Wires):
   • Disconnect the positive supply line to your load.
   • Conectați thick red wire to the positive supply side (where the positive supply line was disconnected from the load).
   • Conectați thick black wire to the positive input of your load. This places the ammeter in series with the load.
6. Verificați conexiunile: Double-check all connections for correct polarity and secure contact before applying power.

Imaginea 5.2: Prim-plan view of the connectors. The smaller connector typically handles the meter's power and voltage sensing, while the larger connector is for current measurement.

6. Instrucțiuni de utilizare

Once properly wired and powered, the diymore digital voltmeter ammeter will automatically display the measured voltage și curent.

• Voltage Afișaj: The upper display, typically in blue, shows the DC voltage în Volți (V).
• Afișare curentă: The lower display, typically in green, shows the DC current in Amperes (A).
• Precizie de citire: Readings are accurate to 1% (±1 digit). For precise applications, consider calibration as described in Section 7.
• Rata de reîmprospătare: The display updates approximately every 300 milliseconds.

7. Calibrare

Some units may require calibration for optimal accuracy. The meter typically features two small potentiometers (trim pots) on the Printed Circuit Board (PCB) for adjusting voltage și citirile curente.

Imaginea 7.1: Intern view of the diymore digital meter. The PCB contains various components, including small potentiometers (trim pots) that can be used for calibration of voltage și citirile curente.

7.1. Calibration Procedure

1. Access PCB: Carefully remove the meter from its casing to access the PCB.
2. Identify Trim Pots: Locate the two small potentiometers on the PCB. One is for voltage calibration, and the other is for current calibration. They may be labeled or identifiable by their proximity to voltage/current sensing circuitry.
3. Connect Reference Meter: Connect a known accurate reference voltmeter and ammeter in parallel and series, respectively, with the circuit being measured by the diymore meter.
4. Ajustare Voltage: Apply a stable DC voltage (e.g., 12V or 24V) within the meter's range. Using a small screwdriver, carefully turn the voltage trim pot until the diymore meter's voltage reading matches the reference voltmeter.
5. Ajustați curentul: Apply a stable DC current (e.g., 1A or 5A) through the diymore meter. Using a small screwdriver, carefully turn the current trim pot until the diymore meter's current reading matches the reference ammeter.
6. Reasamblați: Once calibrated, carefully reassemble the meter into its casing.

Atenţie: Exercise extreme care when handling the exposed PCB to avoid electrostatic discharge or damage to components.

8. Întreținere

The diymore digital voltmeter ammeter is designed for low maintenance. Follow these guidelines to ensure its longevity:

• curatenie: Folosiți o cârpă moale și uscată pentru a curăța afișajul șiasing. Nu utilizați agenți de curățare abrazivi sau solvenți.
• Protecția mediului: Keep the device away from direct sunlight, excessive heat, moisture, and corrosive environments.
• Integritatea conexiunii: Verificați periodic conexiunile cablurilor pentru a vă asigura că acestea rămân fixe și fără coroziune.

9. Depanare

10. Garanție și asistență

diymore products are designed for reliability and performance. While specific warranty details are not provided in this manual, standard return policies typically apply for products purchased through authorized retailers.

For technical assistance, troubleshooting beyond this manual, or inquiries regarding product functionality, please contact diymore customer support through your point of purchase or visit the official diymore brand store online.

Resurse online:

• Official diymore Store: diymore Amazon Store
• Manual de utilizare (PDF): Manual Descărcare PDF