AC Digital Voltmeters
Last Updated: April 1, 2025
Description
AC Digital Voltmeters are devices designed to measure alternating current (AC) voltages. They provide digital readouts, typically displaying between three and seven digits, which allows for precise voltage measurements. These voltmeters can capture minimum and maximum voltage readings, known as spike readings, and are capable of measuring root mean square (RMS) values, a range of frequencies, or signal power in decibels.
Working Principle
AC Digital Voltmeters operate by converting the analog voltage signal into a digital format that can be displayed on a screen. This conversion is achieved through an analog-to-digital converter (ADC) within the device. The digital format allows for more accurate and precise readings compared to analog voltmeters, which are subject to errors such as parallax. Digital voltmeters are useful because they provide high precision and can measure a wide range of voltages and frequencies, making them versatile tools in various electrical and electronic applications.
Applications
AC Digital Voltmeters are used in a variety of applications. They are commonly found in benchtop, rack-mounted, and handheld devices, making them suitable for both laboratory and field use. Specific examples include monitoring resistance temperature detectors (RTDs), thermocouples, transistors, and diodes. They are also used in environments where precise voltage measurement is critical, such as in the calibration of other instruments or in the testing of electrical components.
Advantages over other Materials - Ceramics, Glasses, Refractories, and Cements
While the documents do not provide specific comparisons of AC Digital Voltmeters to materials like ceramics, glasses, refractories, and cements, it is important to note that digital voltmeters, as electronic devices, offer advantages in terms of precision and versatility that these materials cannot provide. Digital voltmeters are designed for electrical measurement, whereas ceramics, glasses, refractories, and cements are typically used for structural, thermal, or insulating purposes.
Limitations
One limitation of AC Digital Voltmeters is that they require a power source to operate, unlike some analog voltmeters that can function solely on the test current. Additionally, while digital voltmeters provide precise readings, they may be more susceptible to damage from electrical surges or environmental factors compared to their analog counterparts.
Considerations
When considering the use of AC Digital Voltmeters, several factors should be taken into account. Initial costs can vary depending on the features and specifications of the device. Operating expenses are generally low, but users should consider the cost of calibration and potential repairs. Digital voltmeters are typically durable, but their accuracy can be affected by environmental conditions, so proper maintenance and regular calibration are essential. Replacement and maintenance costs should also be considered, especially for devices used in demanding environments.
from RS Components, Ltd.
MULTIMETRE DIGITAL SMART A PINCE FATMAX [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Clamp Meter
- AC Voltage: 600
from Uni-Trend US
CAT III 1000V True RMS Datalogging multimeter with trend capture and graph for long term monitoring. [See More]
- Measurement Type: AC
- Standards and Certifications: RoHS
- Form Factor: Handheld
from TE Connectivity
Body Features. Product Weight : .25 KG [.46 LB ]. Configuration Features. Panel Cutout Size : None MM [None INCH ]. Wiring Configuration : Three Phase 4 Wire. Dimensions. Product Depth : 62 MM... [See More]
- Measurement Type: AC
- AC Voltage: 57.7 to 480
- Phase: Three Phase
from RS Components, Ltd.
9 Function Pen Multimeter [See More]
- Measurement Type: AC; DC
- AC Voltage: 600
- DC Voltage: 600
- Standards and Certifications: RoHS
from Uni-Trend US
Industrial Digital Multimeter – True RMS, IP65, 6000 Counts [See More]
- Measurement Type: AC; DC
- Standards and Certifications: RoHS
- Form Factor: Handheld
from TE Connectivity
Body Features. Product Weight : .35 KG [.66 LB ]. Configuration Features. Panel Cutout Size : 92 MM [3.622 INCH ]. Wiring Configuration : Single Phase, Three Phase 3 Wire, Three Phase 4 Wire. Dimensions. [See More]
- Measurement Type: AC
- AC Voltage: 57.7 to 480
- Phase: Single Phase; Three Phase
from RS Components, Ltd.
IDM93N DMM with Advanced Test Lead Set [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from TE Connectivity
Body Features. Product Weight : .3 KG [.46 LB ]. Configuration Features. Panel Cutout Size : None MM [None INCH ]. Wiring Configuration : Three Phase 3 Wire, Single Phase 2 Wire, Three Phase 4 Wire. Dimensions. [See More]
- Measurement Type: AC
- AC Voltage: 57.7 to 480
- Phase: Single Phase; Three Phase
from RS Components, Ltd.
RSCAL(1231803) Digital multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from TE Connectivity
Body Features. Product Weight : .3 KG [.507 LB ]. Configuration Features. Panel Cutout Size : None MM [None INCH ]. Wiring Configuration : Three Phase 4 Wire, Three Phase 3 Wire, Single Phase. Dimensions. [See More]
- Measurement Type: AC
- AC Voltage: 57.7 to 480
- Phase: Single Phase; Three Phase
from RS Components, Ltd.
UKAS(1231803) Digital multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from TE Connectivity
Body Features. Product Weight : .2 KG [.507 LB ]. Configuration Features. Panel Cutout Size : 92 MM [3.622 INCH ]. Wiring Configuration : Three Phase 3 Wire, Single Phase 2 Wire, Three Phase 4 Wire. Dimensions. [See More]
- Measurement Type: AC
- AC Voltage: 57.7 to 480
- Phase: Single Phase; Three Phase
from RS Components, Ltd.
IDM20 Pocket Multimeter CAT III 1000 V [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from TE Connectivity
Body Features. Product Weight : .25 KG [.46 LB ]. Configuration Features. Panel Cutout Size : None MM [None INCH ]. Wiring Configuration : Three Phase 4 Wire. Dimensions. Product Depth : 62 MM... [See More]
- Measurement Type: AC
- AC Voltage: 57.7 to 480
- Phase: Three Phase
from RS Components, Ltd.
RS Pro Compact Multimeter Autoranging [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from TE Connectivity
Body Features. Product Weight : .2 KG [1.98 LB ]. Configuration Features. Panel Cutout Size : 92 MM [3.622 INCH ]. Wiring Configuration : Single Phase 2 Wire, Three Phase 3 Wire, Three Phase 4 Wire. Dimensions. [See More]
- Measurement Type: AC
- AC Voltage: 57.7 to 480
- Phase: Single Phase; Three Phase
from RS Components, Ltd.
RS Pro Compact Multimeter Manual Ranging [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from TE Connectivity
Body Features. Product Weight : .25 KG [.46 LB ]. Configuration Features. Panel Cutout Size : None MM [None INCH ]. Wiring Configuration : Single Phase 2 Wire, Three Phase 4 Wire. Dimensions. Product Depth... [See More]
- Measurement Type: AC
- AC Voltage: 57.7 to 480
- Phase: Single Phase; Three Phase
from RS Components, Ltd.
RSCAL(1231930) IDM20 Pocket Multimeter [See More]
- Measurement Type: AC; DC
- AC Voltage: 600
- Form Factor: Handheld
- Standards and Certifications: RoHS
from TE Connectivity
Dimensions. Case Depth : 2.05 MM [52 INCH ]. Case Height : 3.78 MM [96 INCH ]. Case Width : 3.78 MM [96 INCH ]. Product Weight (KG) : .2. Electrical Characteristics. [See More]
- Measurement Type: AC
- AC Voltage: 57.7 to 480
- Form Factor: Rack mount
from RS Components, Ltd.
UKAS(1231930) IDM20 Pocket Multimeter [See More]
- Measurement Type: AC; DC
- AC Voltage: 600
- Form Factor: Handheld
- Standards and Certifications: RoHS
from RS Components, Ltd.
RSCAL(1231938) RS Pro Compact Multimeter [See More]
- Measurement Type: AC; DC
- AC Voltage: 600
- Form Factor: Handheld
- Special Measurement Types: Temperature
from RS Components, Ltd.
UKAS(1231938) RS Pro Compact Multimeter [See More]
- Measurement Type: AC; DC
- AC Voltage: 600
- Form Factor: Handheld
- Special Measurement Types: Temperature
from RS Components, Ltd.
RSCAL(1231939) RS Pro Compact Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from RS Components, Ltd.
UKAS(1231939) RS Pro Compact Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from RS Components, Ltd.
RS Pro IDM103N Digital Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 1000
- Form Factor: Handheld
- AC Voltage: 1000
from RS Components, Ltd.
RS Pro IDM106N RMS Digital Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 1000
- Form Factor: Handheld
- AC Voltage: 1000
from RS Components, Ltd.
RS Pro IDM61 Digital Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 1000
- Form Factor: Handheld
- AC Voltage: 750
from RS Components, Ltd.
RS Pro IDM71 Digital Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 1000
- Form Factor: Handheld
- AC Voltage: 750
from RS Components, Ltd.
RS Pro IDM63N Pocket Digital Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from RS Components, Ltd.
RS Pro IDM67 Pocket Digital Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from RS Components, Ltd.
RS Pro IDM72 Digital Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 1000
- Form Factor: Handheld
- AC Voltage: 750
from RS Components, Ltd.
RS Pro IDM91E Digital Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from RS Components, Ltd.
RS Pro IDM93N Digital Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 300
- Form Factor: Handheld
- AC Voltage: 600
from RS Components, Ltd.
RS Pro IDM17 Probe Style Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from RS Components, Ltd.
RS Pro IDM5A Digital Wallet Multimeter [See More]
- Measurement Type: AC; DC
- DC Voltage: 600
- Form Factor: Handheld
- AC Voltage: 600
from Vitrek Corporation
The Vitrek 4700 Precision High Voltage Meter offers the highest level of measurement accuracy, yet with its color touch screen – is surprisingly easy to use. Vitrek leverages DSP technology to provide outstanding AC &DC voltage measurement accuracy, stability, repeatability and resolution. [See More]
- Measurement Type: AC; DC; AC / DC
- Phase: Single Phase (optional feature); Three Phase (optional feature)
- Form Factor: Bench top
- Display Digits: 5 Digits; Plus a 1/2 digit
from Hoyt Electrical Instrument Works, Inc.
Designed for AC current and AC voltage. AC testing has 5 ranges. The minimum resolution of leakage current is 0.1mA., Frequency selection: 50/60 Hz and Wide. Data hold function and low battery indication.0-200MAAC, 2/20/200, 1000AAC, up to 600 VAC. [See More]
- Measurement Type: AC
- Phase: Single Phase
- Form Factor: Clamp Meter
- Display Digits: 3 Digits; Plus a 1/2 digit
from Delta Electronics (Americas)
Delta's Power Meter DPM-C530A provides precise measurement of various power parameters including power factor, harmonics, current, voltage, and more. It is also equipped with an over-limit alarm and history logs storage for real-time monitoring purposes. The DPM-C530A is the perfect match for energy... [See More]
- Measurement Type: AC
- Phase: Single Phase; Three Phase
- Form Factor: Rack mount
- Display Digits: 7 or more digits
from Trumeter Company, Inc.
The APM Analogue Effect Digital Panel Meters from Trumeter are both unique and flexible, with a wide range of back light colour options available and a custom curved 40 segment analogue display making it as easy to read as any analogue moving coil or moving iron instrument with the added precision... [See More]
- Measurement Type: AC; DC; AC / DC
- Operating Temp: -10 to 50
- Display Digits: 4 Digits
from SOCOMEC
The COUNTIS E63 is a modular active electrical energy meter which provides metering for three single-phase loads, with direct connection of up to 100 A. It directly displays the total and partial energy and power (kWh and kW) consumed by each single-phase load. Advantages Compact. Due to the... [See More]
- Measurement Type: AC
- Phase: Single Phase
- Form Factor: Rack mount
- Operating Temp: -10 to 55
from OMEGA Engineering, Inc.
The HHM220 is a compact handheld clamp meter which measures AC current. It can measure up to 400 ACA with 0.01A resolution up to 20 amps. It also has a hold feature to capture readings for later viewing. Standard accuracy is +/- 2% RDG + 5 digits. The HHM221 is a pocket size mini clamp meter which... [See More]
- Measurement Type: AC
- Display Digits: 3 Digits; Plus a 1/2 digit
- Form Factor: Clamp Meter; Handheld
- AC Voltage: 200 to 600
from TEGAM, Inc.
Handheld Megohmmeter. 1 M Ω TO 200 M Ω, 500V, 3.5 Digit. The Model R1M-B Handheld Voltmeter/ Megohmmeter is designed to measure insulation resistance in "live" circuits, which may have voltage present. It can be connected to 600 V RMS AC or DC without damage, and its mode of operation is... [See More]
- Measurement Type: AC
- Display Digits: 3 Digits; Plus a 1/2 digit
- Form Factor: Handheld
- AC Voltage: 3 to 600
from SOCOMEC
The COUNTIS E0x is a modular active electrical energy meter displaying the total energy consumed (kWh) directly on its LCD display. It is designed for single-phase load metering and is used for direct connections of up to 32 A. The COUNTIS E02 and E04 has MID certification. Advantages Compact. The... [See More]
- Measurement Type: AC
- Phase: Single Phase
- Form Factor: Rack mount
- Display Digits: 5 Digits; 6 Digits
from OMEGA Engineering, Inc.
The HHM250 is a clamp on multifunction meter that provides high accuracy and reliability in a low cost portable package. The clamp allows for measurement of AC current to 660 amps and AC voltage to 600 volts. Ideal for monitoring electrical power sources to troubleshoot or evaluate. Measures RMS... [See More]
- Measurement Type: AC
- Display Digits: 4 Digits
- Form Factor: Clamp Meter; Handheld
- AC Voltage: ? to 600
from SOCOMEC
The COUNTIS E1x is a modular active electrical energy meter displaying the energy and power consumed (kWh and kW) directly on its backlit LCD display. It is designed for single-phase load metering and is used for direct connections of up to 63 or 80 A depending on the modele). COUNTIS E12, E14 and... [See More]
- Measurement Type: AC
- Phase: Single Phase
- Form Factor: Rack mount
- Operating Temp: -10 to 55
from SOCOMEC
The COUNTIS E3x is a modular active electrical energy meter displaying the energy and power consumed (kWh and kW) directly on its backlit LCD display. It is designed for three-phase load metering and is used for direct connections of up to 100 A. COUNTIS E32, E34 and E36 are MID certified. [See More]
- Measurement Type: AC
- Phase: Three Phase
- Form Factor: Rack mount
- Operating Temp: -10 to 55
from SOCOMEC
The COUNTIS E2x is a modular active electrical energy meter displaying the energy and power consumed (kWh and kW) directly on its backlit LCD display. It is designed for three-phase load metering and is used for direct connections of up to 63 A. Advantages RS485 communication (MODBUS or M-BUS) or... [See More]
- Measurement Type: AC
- Phase: Three Phase
- Form Factor: Rack mount
- Operating Temp: -10 to 55
from SOCOMEC
The COUNTIS E4x is a modular active and reactive electrical energy meter displaying the energies and active power consumed (kWh, kvarh and kW) directly on its backlit LCD display. It is designed for three-phase load metering with connection via CT and is suitable for applications of up to 6000 A... [See More]
- Measurement Type: AC
- Phase: Three Phase
- Form Factor: Rack mount
- Operating Temp: -10 to 55
from SOCOMEC
The COUNTIS E5x is a panel mounted active and reactive electrical energy meter displaying energy and multi-measurement values directly on its large backlit LCD display. It is designed for utilisation on three-phase or single-phase networks with connection via CT and is suitable for applications of... [See More]
- Measurement Type: AC
- Phase: Three Phase
- Form Factor: Rack mount
- Operating Temp: -10 to 55
from SOCOMEC
The DIRIS Digiware system is a hub of technological innovations that revolutionises the world of measurements, bringing a high degree of flexibility to installations and making connection and configuration easy. These innovations, together with unrivaled performance in terms of accuracy and... [See More]
- Measurement Type: AC
- Phase: Single Phase; Three Phase
- Form Factor: Rack mount
- AC Voltage: 50 to 520
from SOCOMEC
DIRIS A80 is a complete panel mounted multifunction meter which incorporates RCM current monitoring (Residual Current Monitoring), for networks with TN-S and TT neutral systems, and enhanced data logging functions for recording curves for quality and RCM events. The DIRIS A80 supplies all the... [See More]
- Measurement Type: AC
- Phase: Single Phase
- Form Factor: Rack mount
- AC Voltage: 28 to 700
from SOCOMEC
The DIRIS A10 is a modular multifunction meter for measuring electrical values in low voltage networks. It allows all electrical parameters to be displayed and utilised for communication and/ or output functions. Advantages Easy to use. Five direct access pushbuttons enable all measurements to be... [See More]
- Measurement Type: AC
- Phase: Single Phase
- Form Factor: Rack mount
- AC Voltage: 28 to 500
from SOCOMEC
The DIRIS A14 is a modular multifunction meter for measuring electrical values in low voltage networks. It allows all electrical parameters to be displayed and utilised for communication and/or output functions. Advantages MID certified B+D module. DIRIS A14 products with MID certification provide... [See More]
- Measurement Type: AC
- Phase: Single Phase
- Form Factor: Rack mount
- AC Voltage: 50 to 460
from SOCOMEC
Compact and ergonomic, the DIRIS A17 is a multifunction meter specially adapted for monitoring and managing electrical energy. Its communication function allows the use and analysis of data collected via a PLC or VERTELIS energy management software. The DIRIS A17 is a key tool for all your energy... [See More]
- Measurement Type: AC
- Phase: Single Phase
- Form Factor: Rack mount
- AC Voltage: 28 to 500
from SOCOMEC
DIRIS A20 are panel mounted measurement units which ensure the user has access to all the measurements required for successfully carrying out energy efficiency projects and ensuring the electrical distribution is monitored. All this information can be analysed remotely using the VERTELIS software... [See More]
- Measurement Type: AC
- Phase: Single Phase
- Form Factor: Rack mount
- AC Voltage: 28 to 500
from SOCOMEC
DIRIS A60 is a panel mounted multifunction meter which incorporates all functions of the DIRIS A40 with the addition of enhanced data logging functions, recording curves for quality events. All this information can be analysed remotely using the Analysis software which is available at no charge and... [See More]
- Measurement Type: AC
- Phase: Single Phase
- Form Factor: Rack mount
- AC Voltage: 28 to 700
from SOCOMEC
The DIRIS B-30 is a measuring device in a modular format that communicates wirelessly or RS485. The 4, RJ12 independent current inputs of the device allow it to manage several types and numbers of circuits :for example, 4 single-phase loads or 1 three-phase load + 1 single-phase load. The DIRIS B-30... [See More]
- Measurement Type: AC
- Phase: Single Phase; Three Phase
- Form Factor: Rack mount
- AC Voltage: 50 to 520