B&K Precision 391AKIT - Datasheet - Manual

High performance and value priced, the Test Bench ® Series offers more features for the dollar than other multimeters. In addition to measuring voltage and current,
the meters also measure capacitance, frequency and temperature, and include component test, diode test and logic indicator capabilities. See the chart below for
the meter that best fits your needs. A double injection molded case provides improved grip and protection for the meters.
Features and Benefits
■ Resistance measurement
■ Frequency measurement
■ Diode check
■ Audible continuity
■ All current ranges fused
■ Auto power off
■ Ruggedized case
■ CATIII 1000 V, (all models)
■ CATIV 600 V, (392 & 393)
Handheld Digital Multimeters
Test Bench ® Series
Data Sheet
w w w.bk prec ision.c om Technical data subject to change
© B&K Precision Corp. 2014
High Quality, Ruggedized, Multifunctional
Features 392 & 393 391A 390A 389A 388B
True RMS √ √ - - -
Ranging Auto/Manual Manual Auto/Manual Auto/Manual Manual
DCV Accuracy 0.08% 0.05% 0.1% 0.25% 0.5%
AC/DC Voltage and Current √ √ √ √ √
Display Digits, Count 60000, 4 5/6 20000, 4 1/2 4000, 3 3/4 4000, 3 3/4 4000, 3 3/4
Bar Graph √ - √ √ -
Capacitance Measurement √ - √ √ √
Transistor Test - - - - √
Temperature Probe √ - √ - -
Logic Probe √ √ - - √
Relative Mode √ - √ √ -
Min/Max Hold √ - √ √ -
Peak Hold √ - √ √ -
Data Hold √ √ √ √ -
USB 393 only - √ - -
Specifications 392 & 393 391A 390A 389A 388B
Volts True RMS reading True RMS reading - - -
DC Ranges 600 mV, 6 V, 60V, 600 V, 1000 V 200 mV, 2 V, 20 V, 200 V, 1,000 V 400 mv, 4 V, 40 V, 400 V, 1000 V
AC Ranges 600 mV, 6 V, 60V, 600 V, 750 V 200 mV, 2 V, 20 V, 200 V, 750 V 400 mv, 4 V, 40 V, 400 V, 750 V
Resolution 0.01 mV, 0.1 mV, 1 mV, 10 mV, 100 mV 10 µV, 100 mV, 1 mV 10 mV, 100 mV 100 µV, 1 mV, 10 mV, 100 mV, 1 V
Basic DC Accuracy ±(0.08% rdg + 5 dgt) ±(0.05% + 3 dgt) ±(0.1% rdg + 2 dgt) ±(0.25% rdg + 2 dgt) ±(0.5% rdg + 1 dgt)
Basic AC Accuracy ±(1.5% rdg + 20 dgt) 500 Hz -1 kHz ±(2% + 10 dgt) 500 Hz - 2 kHz ±(1.5% rdg +5 dgt) 500 Hz - 1 kHz ±(1.5% rdg +3 dgt) 500 Hz - 1 kHz
Overload Protection 1000 VDC or 750 VAC rms
1200 VDC or AC rms
500 VDC/AC rms 15 sec
on 200 mV range
1100 VDC or AC rms 1000 VDC or peak AC
1200 VDC or AC rms
500 VDC/AC rms 15 sec
on 200 mV range
Input Impedance 10 MΩ, 11 MΩ on 6 V range 10 MΩ 400 mV: >100 MΩ, 4V: 10 MΩ 40 V - 1000 V: 9.1 MΩ 10 MΩ