Data Acquisition Digital Multimeters
Last Updated: April 1, 2025
Description
Data Acquisition Digital Multimeters (DMMs) are advanced instruments that integrate the functionalities of traditional multimeters with data acquisition capabilities. These devices are designed to measure electrical parameters such as voltage, current, and resistance, while also capturing and storing data for further analysis. They typically feature a digital display and may include options for data logging and connectivity to computers for data transfer and analysis.
Working Principle
Data Acquisition Digital Multimeters operate by converting analog signals from electrical parameters into digital data that can be processed and stored. This is achieved through the use of analog-to-digital converters (ADCs), which quantify the analog input into a digital format. The digital data can then be displayed on the multimeter's screen or transmitted to a computer for further analysis. These devices are useful because they allow for precise and continuous monitoring of electrical parameters, enabling engineers to capture transient events and analyze trends over time.
Applications
Data Acquisition Digital Multimeters are used in a variety of specialized applications. For example, they are employed in laboratory settings for detailed analysis of electrical circuits, in industrial environments for monitoring equipment performance, and in research and development for testing new electronic components. They are particularly valuable in applications where data needs to be logged over time, such as in the testing of battery life or the monitoring of environmental conditions affecting electronic devices.
Advantages over other Digital Multimeters
One of the primary advantages of Data Acquisition Digital Multimeters over standard digital multimeters is their ability to log and store data for extended periods. This feature allows for the analysis of trends and the identification of anomalies that may not be apparent in real-time measurements. Additionally, these multimeters often offer higher accuracy and resolution, making them suitable for precision measurements in demanding applications.
Limitations
Despite their advanced capabilities, Data Acquisition Digital Multimeters can have limitations. They may be more expensive than standard digital multimeters due to their enhanced features and capabilities. Additionally, the complexity of these devices can require more time and expertise to operate effectively. The data logging and storage capabilities may also be limited by the device's memory capacity, necessitating regular data transfer to external systems.
Considerations
When selecting a Data Acquisition Digital Multimeter, several factors should be considered. Initial costs can be higher than those of standard multimeters, but the investment may be justified by the enhanced capabilities and potential for improved measurement accuracy. Operating expenses may include the cost of software for data analysis and potential calibration services to maintain accuracy. Durability is another consideration, as these devices are often used in demanding environments. Accuracy and resolution are critical factors, especially in applications requiring precise measurements. Finally, replacement and maintenance costs should be evaluated, as these can impact the overall cost of ownership over the device's lifespan.
from DigiKey
Auto True RMS Handheld Digital (DMM) Multimeter 4.75 Digit LCD, Triple, Bar Graph Display Voltage, Current, Resistance, Capacitance, Inductance, Frequency Continuity, Diode Test Function Features Auto Off, Backlight, Compare, Data Logging (Optically Isolated RS-232), Hold, Min/Max [See More]
- Options & Features: Auto-ranging; Data Acquisition
- Special Measurement Types: Continuity Check; Diode test
- Form Factor: Handheld
- Standards and Certifications: RoHS
from DigiKey
Auto True RMS Bench Digital (DMM) Multimeter 5.5 Digit VFD, Dual Display Voltage, Current, Resistance, Frequency Continuity, dB, Diode Test Function Features Compare, Data Logging (RS-232), Hold, Min/Max [See More]
- Options & Features: Auto-ranging; Data Acquisition
- Special Measurement Types: Continuity Check; Diode test
- Form Factor: Bench top
from DigiKey
Auto Average Handheld Digital (DMM) Multimeter 4.5 Digit LCD, Triple Display Voltage, Current, Resistance, Capacitance, Frequency Continuity, Diode Test Function Features Backlight, Data Logging (RS-232), Min/Max/Ave [See More]
- Options & Features: Auto-ranging; Data Acquisition
- Special Measurement Types: Continuity Check; Diode test
- Form Factor: Handheld
from DigiKey
Auto True RMS Handheld Digital (DMM) Multimeter 4.75 Digit LCD, Bar Graph Display Voltage, Current, Resistance, Capacitance, Temperature, Frequency Continuity, dB, Diode Test Function Features Auto Off, Backlight, Data Logging (RS-232), Hold, Min/Max/Ave [See More]
- Options & Features: Auto-ranging; Data Acquisition
- Special Measurement Types: Continuity Check; Diode test
- Form Factor: Handheld
from DigiKey
Auto/Manual True RMS Handheld Digital (DMM) Multimeter 5.8 Digit LCD, Bar Graph Display Voltage, Current, Resistance, Capacitance, Frequency Continuity, dB, Diode Test Function Features Auto Off, Backlight, Data Logging (USB), Hold, Min/Max [See More]
- Options & Features: Auto-ranging; Data Acquisition
- Special Measurement Types: Continuity Check; Diode test
- Form Factor: Handheld
from DigiKey
Auto True RMS Bench Digital (DMM) Multimeter 4.5 Digit VFD, Dual Display Voltage, Current, Resistance, Frequency Continuity, dB, Diode Test Function Features Data Logging (USB), Hold, Min/Max [See More]
- Options & Features: Auto-ranging; Data Acquisition
- Special Measurement Types: Continuity Check; Diode test
- Form Factor: Bench top
from DigiKey
Auto/Manual Average Bench Digital (DMM) Multimeter 4.5 Digit LED Display Resistance Function Features Data Logging (Internal Memory, RS-232, USB), Min/Max [See More]
- Options & Features: Auto-ranging; Data Acquisition; Data storage/ logging
- Form Factor: Bench top
from DigiKey
Auto/Manual Average Bench Digital (DMM) Multimeter 5.5 Digit LED Display Resistance, Temperature Continuity Function Features Data Logging (Internal Memory, RS-232, USB), Min/Max [See More]
- Options & Features: Auto-ranging; Data Acquisition; Data storage/ logging
- Special Measurement Types: Continuity Check
- Form Factor: Bench top
from Tektronix, Inc.
Keithley and Tektronix offer the widest range of bench and system digital multimeters (DMMs) to meet any measurement requirement. Whether you need a basic DMM for a student lab or a fast or accurate DMM for component, module, or assembled product, production testing, you can choose from 5 ½... [See More]
- Options & Features: Data Acquisition; Data storage/ logging; Temperature Compensated
- Measurement Type: AC / DC
- Form Factor: Bench top
- Display Digits: 7 or more digits
from Albér
The Anton-Paar DMA-35 is a handheld, stand-alone digital density meter suitable for use in demanding industrial environments. Measuring specific gravity and electrolyte temperature has always been a time consuming, messy chore requiring two technicians: one to take the readings, the other to write... [See More]
- Options & Features: Has Application Software for Host Computer; Data Acquisition; Data storage/ logging; Programmable
- Display Digits: 5 Digits
- Form Factor: Handheld
- Max Channels: 1