Digital multimeters are electronic measuring instruments that combine voltmeter, ammeter, and ohmmeter functions into a single unit. These tools measure voltage, current, and resistance across DC and AC circuits, with advanced models offering frequency, capacitance, temperature, and diode testing capabilities. True RMS functionality enables accurate AC measurements on non-sinusoidal waveforms. Professional-grade DMMs deliver measurement speeds up to 1,000 readings/second with 6.5-digit resolution and onboard data logging for circuit analysis, troubleshooting, and system validation in electrical and electronics applications.
– Technical Specifications
-# Keysight 34461A Truevolt Series
• Display Resolution: 6.5 digits
• Basic DC Voltage Accuracy: 35 ppm
• Measurement Speed: 1,000 readings/second
• Memory: 10,000 readings
• Maximum DC Voltage: 1000 V
• Maximum AC Voltage: 750 V
• Maximum DC Current: 10 A
• Maximum AC Current: 10 A
• Maximum Resistance: 100 MΩ
• Frequency Measurement Range: 3 Hz to 300 kHz
• Maximum Capacitance: 100 μF
• Display: 4.3-inch color graphical display with histogram, bar chart, and trend chart modes
-# Tektronix DMM4050
• Display Resolution: 6.5 digits
• Basic DC Voltage Accuracy: 0.0024% (1 year)
• Maximum DC Voltage: 1000 V
• Maximum AC Voltage: 1000 V
• Maximum DC Current: 10 A
• Maximum AC Current: 10 A
• Maximum Resistance: 1 GΩ
• Display: Dual display with TrendPlot Paperless Data Recorder and histogram modes
-# Fluke 87V Industrial
• Display Resolution: 6000 counts / 20000 counts (dual display)
• Basic DC Accuracy: 0.05%
• Peak Capture Speed: 250 μs
• Memory: Min/Max/Average, Peak Min/Max
– Key Features
• True RMS measurement for AC voltage and current
• Diode and continuity testing
• Frequency and period measurement
• Temperature measurement capability
• Color graphical displays with data trending and statistical analysis
• High-speed data acquisition and onboard memory logging
• LAN/LXI, USB, and GPIB connectivity options
– Typical Applications
Circuit diagnostics, system commissioning, preventive maintenance, transient event capture, and field troubleshooting in industrial and laboratory environments.
– Compatibility & Integration
Interfaces include USB, LAN/LXI, GPIB, RS-232C, and USB Host ports. All models meet UL, CSA, and CE safety standards.
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