Clamp Meter Digital Voltmeters
Last Updated: April 1, 2025
Description
Clamp Meter Digital Voltmeters are specialized instruments designed to measure electrical parameters such as alternating current (AC) and direct current (DC) voltages. These devices typically display readings with high precision, often between three and seven digits. They are equipped with features to capture minimum and maximum voltage spikes and can measure root mean square (RMS) values, frequency ranges, and signal power in decibels. Some models also monitor resistance temperature detectors (RTDs), thermocouples, transistors, and diodes. These voltmeters are available in benchtop, rack-mounted, and handheld configurations, with battery-powered options that do not require plug-in power.
Working Principle
Clamp Meter Digital Voltmeters operate by using a current sensor built into the clamp that surrounds the wire being measured. This sensor detects the magnetic field generated by the current flowing through the wire, allowing the device to measure the current without direct contact. The digital voltmeter component then processes this information to provide accurate voltage readings. These devices are useful because they offer a non-intrusive way to measure electrical parameters, ensuring safety and convenience, especially in live circuits.
Applications
Clamp Meter Digital Voltmeters are used in various applications across different industries. For example, they are essential tools for electrical maintenance and troubleshooting in industrial settings, allowing technicians to measure current and voltage without interrupting the circuit. They are also used in HVAC systems to monitor electrical parameters and ensure efficient operation. In the automotive industry, these devices help diagnose electrical issues in vehicles by measuring battery voltage and current flow.
Advantages over other Materials - Ceramics, Glasses, Refractories, and Cements
Clamp Meter Digital Voltmeters offer advantages over materials like ceramics, glasses, refractories, and cements in terms of electrical measurement capabilities. Unlike these materials, which are primarily used for insulation or structural purposes, clamp meters provide precise and direct measurement of electrical parameters. Their ability to measure without direct contact with the conductor offers a significant advantage in terms of safety and ease of use.
Limitations
One limitation of Clamp Meter Digital Voltmeters is their dependency on the magnetic field generated by the current, which can lead to inaccuracies if the field is weak or if there is interference from nearby conductors. Additionally, these devices may have limited accuracy when measuring very low currents or voltages. Environmental factors such as temperature and humidity can also affect their performance.
Considerations
When selecting a Clamp Meter Digital Voltmeter, several considerations should be taken into account. Initial costs can vary depending on the features and specifications of the device. Operating expenses are generally low, especially for battery-powered models that do not require continuous power supply. Durability is an important factor, as these devices are often used in demanding environments. Accuracy is crucial for reliable measurements, so choosing a model with high precision is recommended. Replacement and maintenance costs should also be considered, as regular calibration may be necessary to ensure ongoing accuracy.
from Uni-Trend US
UT216A 600A True RMS Digital Clamp Meter [See More]
- Form Factor: Clamp Meter; Handheld
- Standards and Certifications: RoHS
from RS Components, Ltd.
Stanley FMHT82564-0 Digital Multimeter [See More]
- Form Factor: Clamp Meter
- Measurement Type: AC; DC
from OMEGA Engineering, Inc.
The HHM98P multifunction clamp-on meter provides high accuracy and reliability in a low-cost, portable package. The built-in AC clamp makes this meter ideal for troubleshooting electric resistance heaters and other plant electrical systems. In addition, the HHM98P effectively measures current from 3... [See More]
- Form Factor: Clamp Meter; Handheld
- Display Digits: 4 Digits
- Measurement Type: AC / DC
- AC Voltage: 0.0 to 600
from Greenlee Textron, Inc.
DIGITAL TYPE. 3-1/2 DIGIT LCD DISPLAY TYPE. UL (CANADA AND US), CE APPROVAL. 1.5 V AAA BATTERY TYPE. TEST LEAD, CARRYING CASE INCLUSION. AC CURRENT, AC/DC VOLTAGE, RESISTANCE PARAMETER MEASURED. 1.06 INCH JAW OPENING. 200 OHM, 2/20/200 KILO OHM, 2/20 MEGA OHM RESISTANCE RANGE. 200/400 AMPERE AC... [See More]
- Form Factor: Clamp Meter
- Display Digits: 3 Digits; Plus a 1/2 digit
- Measurement Type: AC / DC
- DC Voltage: 200 to 600
from Cole-Parmer
Two precision instruments in one, meets IEC 1010 CAT III 1000V [See More]
- Form Factor: Clamp Meter
- AC Voltage: 1000
- DC Voltage: 1000
from REED-Direct
Touch Zero and Data Hold functions. Polarity and overload indications. Continuity test. Auto or manual ranging. Auto power-off. Low battery indication. Include test leads, soft carrying case and batteries. Ce EN61010 600V CAT lll 300V CAT lll. SPECIFICATIONS: AC/DC Current Range: 40A, 400A. [See More]
- Form Factor: Clamp Meter; Handheld
- Display Digits: 3 Digits; Plus a 1/2 digit
- Measurement Type: AC / DC
- DC Voltage: 0.0 to 600
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]
- Form Factor: Clamp Meter
- Phase: Single Phase
- Measurement Type: AC
- Display Digits: 3 Digits; Plus a 1/2 digit
from OMEGA Engineering, Inc.
The HHM61 combination DMM/ac current clamp meter/digital thermometer is a compact, lightweight, multi-function test and measurement instrument at an economical price. The HHM61 is ideal for electrician ’s and technicians who need a portable test instrument that is both accurate and reliable. [See More]
- Form Factor: Clamp Meter; Handheld
- Display Digits: 3 Digits; Plus a 1/2 digit
- Measurement Type: AC / DC
- DC Voltage: ? to 400
from Greenlee Textron, Inc.
DIGITAL TYPE. LCD DISPLAY TYPE. UL (CANADA AND US), CE APPROVAL. 3 V STANDARD BUTTON BATTERY TYPE. TEST LEAD INCLUSION. AC CURRENT, AC/DC VOLTAGE, RESISTANCE PARAMETER MEASURED. 1.02 INCH JAW OPENING. 400 OHM, 4/40/400 KILO OHM, 4/40 MEGA OHM RESISTANCE RANGE. 40/400/600 AMPERE AC CURRENT RANGE. [See More]
- Form Factor: Clamp Meter
- DC Voltage: 4 to 600
- Measurement Type: AC / DC
- AC Voltage: 4 to 600
from Cole-Parmer
bull; Available for sale in the United States and Canada only. • Rotating head provides easy viewing of measurements in tight or inconvenient places. • Advanced VoltTect non-contact voltage detection. • Slim jaw design with one hand operation. • Measures AC Current up to 400 AC... [See More]
- Form Factor: Clamp Meter
- AC Voltage: 600
- DC Voltage: 600
from REED-Direct
3-3/4 digit LCD with high-speed, 42-segment bargraph. Max/Min and Data Hold functions. Peak Hold function. Diode and continuity test with beeper. Auto or manual ranging. Include test leads, soft carrying case & batteries. Ce EN61010 600V CAT lll 1000V CAT lll. SPECIFICATIONS: AC/DC Current... [See More]
- Form Factor: Clamp Meter; Handheld
- Display Digits: 3 Digits; Plus a 1/2 digit
- Measurement Type: AC / DC
- DC Voltage: 0.0 to 1000
from Hoyt Electrical Instrument Works, Inc.
Full auto range for V.A and Ω functions. Data hold function freezes the reading in dimly lit or hard to reach places. Low battery indication. Built-in buzzer for continuity test. Safety design throughout with no exposed metal parts. Shielded banana plugs and recessed input terminals. Ohm... [See More]
- Form Factor: Clamp Meter; Handheld
- Display Digits: 3 Digits; Plus a 1/2 digit
- Measurement Type: AC / DC
- AC Voltage: 400 to 600
from OMEGA Engineering, Inc.
The Model HHM59 is a lightweight completely portable digital clamp meter with a 3 1 /2 digit LCD display. This meter is well suited for use by electricians and technicians who require a portable instrument that is accurate and reliable and that has full digital multimeter capabilities. The integral... [See More]
- Form Factor: Clamp Meter; Handheld
- Display Digits: 3 Digits; Plus a 1/2 digit
- Measurement Type: AC / DC
- DC Voltage: ? to 1000
from Greenlee Textron, Inc.
DIGITAL TYPE. TWO-LEVEL 4 DIGIT LCD DISPLAY TYPE. UL (CANADA AND US), CE APPROVAL. (1) 9 V BATTERY TYPE. TEST LEAD, CARRYING CASE INCLUSION. AC/DC CURRENT, AC/DC VOLTAGE, APPARENT POWER, FREQUENCY, POWER FACTOR, REACTIVE POWER, TRUE POWER PARAMETER MEASURED. 10 TO 1000 HZ FREQUENCY RANGE. 2.17 INCH... [See More]
- Form Factor: Clamp Meter
- Display Digits: 4 Digits
- Measurement Type: AC / DC
- DC Voltage: 500 to 600
from Cole-Parmer
FEATURES | <ul > <li >AC/DC current up to 400A | <li >Resistance measurement | <li >Data hold | <li >Relative measurement | <li >Analog bar graph | <li >Low battery indicator | <li >AC/DC voltage up to 600V | <li >Continuity test | <li... [See More]
- Form Factor: Clamp Meter
- AC Voltage: 600
- DC Voltage: 600