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B&K Precision is a leading manufacturer of reliable and cost-effective test and measurement equipment for engineers, technicians and research professionals. Its portfolio includes DC power supplies, electronic loads, spectrum analysers, signal generators, oscilloscopes, multimeters, battery testers and component analysers. Trusted across the electronics, automotive, education and industrial sectors, B&K Precision instruments are designed to support product development, manufacturing, troubleshooting and quality assurance applications.
The 391B True RMS multimeter offer a comprehensive solution for general purpose measurement applications. Bundled with a complete set of accessories, these multimeter provide technicians and engineers with accurate results, data logging capabilities, and measurement features for evaluating a variety of electronics or electrical systems.
The easy to read display features an analog style bar graph to help identify measurement trends or fluctuating signals. When working in low-light environments, the auto on/off backlight adjusts for best visibility while maximizing battery life. Dual line display capabilities enable two measurements or one measurement and a math function to appear on screen simultaneously.
Advanced features like data logging records measurements to the meter’s internal memory at a user-specified sampling interval. All models in this series provide convenient measurement monitoring and recording from a PC connected to the meter’s optical isolated USB interface. Additionally, measurements stored in the meter's internal memory can be exported using the provided PC application software.
Measurement functions: DCV, ACV, AC+DC, DCI, ACI, resistance, capacitance, frequency, diode, temperature, & continuity test
True RMS AC and AC+DC measurements
Up to 100,000-count, dual display with analog style bar graph
Temperature measurements using provided K-type thermocouple
dB, dBm, limits, peak-hold, REL (Δ), MIN, MAX, and average math functions
HFR (High Frequency Rejection) mode applies a low pass filter for AC measurements (800 Hz cut-off)
CAT III 1000 V / CAT IV 600 V protection
Dirt and water-resistant housing with rubberized protective case
Isolated USB interface with operating software for remote data logging
Features |
391B |
||
|---|---|---|---|
True RMS |
AC, AC + DC voltage and current |
||
DCV Accuracy |
± (0.03% + 20 digits) |
||
Display Count |
40,000 |
||
Auto Backlit, Dual Display |
✔ |
||
Analog Style Bar Graph |
✔ |
||
Relative Mode (% and Δ) |
✔ |
||
Min/Max/Avg |
✔ |
||
dBm/dB measurement |
✔ |
||
Auto Hold, Peak Hold |
✔ |
||
Data Log Capacity |
20,000 readings |
||
Duty Cycle |
✔ |
||
Temperature Probe |
✔ |
||
Optical Isolated USB Interface |
✔ |
||
PC software is available for logging measurement data at specified intervals with date and time stamp. Log up to 100,000 data points in graph or table format.
Measurement data recorded in the field can be exported using the software for analysis.
