Voltmeters, Digital & Analog Voltmeters | RS
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    Voltmeters

    Voltmeters, (sometimes referred to as volt testers) are instruments used to measure the electric potential difference, also known as voltage, between two points in an electrical circuit. Voltage testers are commonly used in electrical and electronic systems to determine the voltage levels at various locations. Voltmeters typically have a numeric display, such as an analogue needle or a digital readout, which indicates the voltage value in volts. They can be designed for specific voltage ranges or have adjustable settings to accommodate different measurement requirements. Voltmeters can be handheld devices or integrated into larger electrical equipment for monitoring and troubleshooting purposes.

    What types of Voltmeters are there?

    Analogue Voltmeters - these have a pointer or needle that moves across a scale to indicate the measured voltage. They typically use a moving coil or moving iron mechanism to convert the electrical signal into mechanical motion. Analogue voltmeters are simple and reliable but may have limitations in terms of accuracy and precision.

    Digital Voltmeters (DVM) - provide voltage measurements in a numeric form on a digital display. They use analogue-to-digital converters (ADC) to convert the input voltage into a digital signal, which is then processed and displayed. DVMs offer higher accuracy, precision, and resolution compared to analogue voltmeters. They may also include additional features such as auto-ranging and data logging.

    Moving coil voltmeters - these are either permanent magnets or dynamometers as measuring components with low power consumption benefits. Moving iron voltmeters can measure both AC and DC currents by producing a deflective torque. The torque-to-weight ratio is high which means increased accuracy of readings.

    Electrostatic voltmeters - these measure current flow based on attracting, repulsion or symmetry between two electrically charged plates. Their benefits are the high voltage range capacity of 200KV.

    What are the Benefits of Voltmeters?

    • Accurate Voltage Measurement: Voltmeters provide accurate and precise voltage measurements, allowing for precise analysis and troubleshooting of electrical systems.
    • Easy-to-Read Displays: Most voltmeters have clear and easy-to-read displays, whether analogue or digital, making it convenient to interpret the measured voltage values.
    • Versatility: Voltmeters can measure voltage in various electrical systems and circuits, making them versatile instruments suitable for a wide range of applications.
    • Safety Assurance: Voltmeters play a crucial role in ensuring safety by allowing technicians and electricians to verify the absence of voltage before performing maintenance or repairs.
    • Troubleshooting and Maintenance: Voltmeters are essential tools for troubleshooting electrical issues. By measuring voltage levels at different points in a circuit, technicians can pinpoint the source of problems and take corrective actions.
    • Calibration and Verification: Voltmeters are used for calibrating and verifying the accuracy of other measuring instruments, ensuring consistent and reliable measurements across the entire electrical measurement system.
    • Data Analysis and Monitoring: Voltmeters can be used to monitor voltage levels over time, enabling data analysis and trend monitoring.

    341 Products showing for Voltmeters

    Lascar
    DC
    4.5
    LCD
    27mm
    57mm
    8.2mm
    6 → 14 V
    12.5 mm
    ±1 %
    Digits Only
    0°C
    Voltmeter
    +50°C
    -
    Lascar
    DC
    3.5
    LCD
    36mm
    72mm
    9mm
    7.5 → 14 V
    15 mm
    ±0.1 %
    Digits Only
    0°C
    Voltmeter
    +50°C
    -
    HOBUT
    DC
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -25°C
    Voltmeter
    +40°C
    -
    Sifam Tinsley
    AC
    -
    -
    38mm
    43mm
    -
    -
    -
    -
    -
    -25°C
    Voltmeter
    +55°C
    -
    Sifam Tinsley
    DC
    -
    -
    68mm
    68mm
    54mm
    -
    -
    -
    -
    -10°C
    Voltmeter
    +55°C
    0 → 100V dc
    Lascar
    DC
    4.5
    LCD
    27mm
    57mm
    8.2mm
    3 → 7 V
    12.5 mm
    ±1 %
    Digits Only
    0°C
    Voltmeter
    +50°C
    -
    Murata Power Solutions
    DC
    3
    LCD
    21.29mm
    33.93mm
    16.8mm
    -
    -
    ±0.2 V
    Digits Only
    0°C
    Voltmeter
    +60°C
    -
    Sifam Tinsley
    DC
    -
    -
    45mm
    45mm
    54mm
    -
    -
    -
    -
    -10°C
    Voltmeter
    +55°C
    0 → 30V dc
    Lascar
    DC
    3.5
    LCD
    11.4mm
    28.4mm
    13.6mm
    (9V mode / V+ → V-) 6 → 15V
    5.5 mm
    ±1 %
    Digits Only
    0°C
    Voltmeter
    +50°C
    -
    Murata Power Solutions
    DC
    3.5
    LCD
    22.3mm
    53.80mm
    13.2mm
    -
    10.2 mm
    ±2 %
    Digits Only
    0°C
    Voltmeter
    +60°C
    -2 → +2V
    Trumeter
    AC, DC
    4
    LCD
    68mm
    68mm
    53mm
    12 → 24 V ac/dc
    -
    1 %
    Simulated Analogue Display
    -10°C
    Voltmeter
    +60°C
    0 → 600 V dc, 0 → 600V ac
    Red Lion
    DC
    5
    LCD
    33mm
    68mm
    43.4mm
    -
    -
    -
    Digits Only
    -35°C
    Voltmeter
    +75°C
    -
    Lascar
    DC
    3.5
    LCD
    22mm
    45mm
    9mm
    7 → 14 V dc
    10 mm
    ±1 %
    Digits Only
    0°C
    Voltmeter
    +50°C
    -
    Murata Power Solutions
    DC
    4.5
    LED
    22.3mm
    53.8mm
    20.62mm
    -
    -
    -
    Digits Only
    0°C
    Voltmeter
    +50°C
    -
    HOBUT
    AC
    -
    -
    92mm
    92mm
    -
    -
    -
    -
    -
    -25°C
    Voltmeter
    +40°C
    -
    HOBUT
    DC
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -25°C
    Voltmeter
    +40°C
    -
    Lascar
    DC
    3.5
    LCD
    32mm
    62mm
    -
    5 → 14 V dc
    12.7 mm
    0.1 %
    Digits Only
    0°C
    Voltmeter
    +50°C
    -
    Murata Power Solutions
    DC
    3.5
    LED
    22.3mm
    53.8mm
    19.6mm
    -
    -
    ±2 %
    Digits Only
    0°C
    Voltmeter
    +60°C
    -
    Lascar
    DC
    3.5
    LCD
    22.2mm
    45mm
    9mm
    7.5 → 14 V
    12.5 mm
    ±1 %
    Digits Only
    0°C
    Voltmeter
    +50°C
    -
    Sifam Tinsley
    DC
    -
    -
    68mm
    68mm
    54mm
    -
    -
    -
    -
    -10°C
    Voltmeter
    +55°C
    0 → 15V dc
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