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DIGITAL MULTI-METER BK-388B 41 Range Volt, Amp, Ohm, Capacitance Meter, Logic Probe, Frequency Counter, Trans/Diode Test
BK Precision:
FRYS.com #: 2968215
High performance and value priced, the Test Bench® Series offers more features for the dollar than other multimeters. These meters include Component Test capabilities, Resistance Diode Test and Capacitance, in addition to measuring Frequency, Temperature and a Logic Indicator. See the chart below for the meter that best fits your needs. Dual injection molding process allows a better grip and protection for the meters. CE marked and UL listed.
  • Resistance measurement
  • Diode check
  • Frequency measurement
  • Audible continuity
  • All current ranges fused
  • Ruggedized case
  • Auto power off
  • Designed to meet IEC61010-1 CATIII 600V, class 2

Shipping: In stock, same day shipping
Not available for export.
Store Pickup: Available
Detailed Description |  Tell a friend | Warranty Info
Frys#2968215
Price: $119.95
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Frys» Electronic Comp.» Test and Measurement» Digital Multi-Meters» Digital Multi-Meters»
Detailed Description


Specifications models
  391A 390A 389B 388B
Volts True RMS reading  
DC Ranges 200 mV, 2V, 20V, 200V, 1000V 400 mV, 4V, 40V, 400V, 1000V
AC Ranges 200 mV, 2V, 20V, 200V, 750V 400 mV, 4V, 40V, 400V, 750V
Resolution 10uV, 100mV, 1mV 10 mV, 100 mV 100uV, 1 mV, 10 mV, 100 mV, 1 V
DC Accuracy +-(0.05% + 3 dgt) +-(0.1% rdg + 2 dgt) +-(0.25% rdg + 2 dgt) +-(0.5% rdg + 1 dgt)
AC Accuracy +-(1%+10 dgt.) 50 Hz - 500 Hz 400 mV: +- (1.2% rdg + 5 dgt) +-(1.2%rdg + 4 dgt)
  +-(2% + 10 dgt.) 500 Hz - 2 kHz 50 Hz - 100 Hz 750V: +- (2% rdg + 4 dgt)
  500 Hz on 750V range +-(1.0% rdg + 3 dgt) 50 Hz - 500 Hz >10% of range at 200mV range +-(1.5% rdg + 3 dgt) 500 Hz-1kHz
Overload Protection 1200VDC or AC rms 1100 VDC or AC rms 1200VDC or AC rms
  500VDC/AC rms 15 sec     500VDC/AC rms 15 sec
  on 200mV range     on 200mV range
Input Impedance 10 MOHM 400mV: > 100MOHM, 4V: 10 MOhm 40V - 1000V: 9.1MOHM 10MOHM
Current True RMS reading    
Ranges 200 uA, 2 mA, 20 mA, 200 mA, 20A* 400 uA, 4 mA, 40 mA, 400 mA, 20A* 400 mA, 4 mA, 40 mA, 400 mA, 2A, 20A*
Resolution 10nA, 100 nA, 1 uA, 10 uA, 1 mA 0.1 uA, 1 uA, 10 uA, 100 uA, 10 uA 100 nA, 1 uA, 10 uA, 100 uA, 1 mA, 10 mA
DC Accuracy 200 uA to 200 mA: +-(0.5% rdg + 5 dgt.) 20 A: +-(2% rdg + 10 dgt.) 400 uA - 400 mA: +-(1% rdg + 5 dgt) 20 A: +- (2% rdg + 3 dgt) +-(1% rdg + 1 dgt)
+-(2% rdg + 3 dgt)		 400 uA - 400 mA: +-(1% rdg + 1 dgt)
2A: +-(1.5% rdg + 1 dgt)
20A: +-(3% rdg + 3 dgt)
AC Accuracy 200 uA to 200 mA: +-(1.2% rdg + 10 dgt.)
20A: +-(2.5% rdg + 20 dgt.)		 400 uA to 400 mA: +-(1.5% rdg + 4 dgt)
20A: +-(2.5% rdg + 4 dgt.)		 400 uA - 400 mA: +-(1.5% rdg + 1 dgt)
2A: +-(2% rdg + 4 dgt)
20A: +-(3.5% rdg + 4 dgt)
Input Protection uA/mA Input:
0.5A/500V fast blow ceramic fuse
20A input:
20A/600A fast blow ceramic fuse		 uA/mA Input:
0.5A/500V fast blow ceramic fuse
20A input:
20A/600A fast blow ceramic fuse		 uA/mA input:
2A/600V fastblow ceramic fuse
20A input:
20A/600V fastblow ceramic fuse
Max. Burden Voltage 600mV (900 mV on 20A range) 500mV (2V on 4mA, 400mA ranges) 600mV (900 mV on 2A, 20A ranges)
Resistance    
Ranges 200OHM, 2kOhm, 20 kOhm, 200 kOhm, 2 MOhm, 20 MOhm 400 OHM, 4 kOhm, 40 kOhm, 400 kOhm, 4 MOhm, 40 MOhm
Resolution 10 mOHM, 100 mOhm, 1 Ohm, 10 Ohm, 100 Ohm, 1 kOhm 100 mOHM, 1 Ohm, 10 Ohm, 100 Ohm, 1 kOhm, 10 kOhm
Accuracy 200 OHM, 2 MOhm: +-(0.25% rdg + 10 dgt.)
2 kOHM to 200 kOhm: +-(0.15% rdg + 3 dgt.)
20 MOHM: +-(1.0% + 10 dgt.)		 400 OHM to 400 kOhm: +-(0.5% rdg + 4 dgt.)
4 MOHM: +-(1% rdg + 5 dgt.)
40 MOHM: +-(2% rdg + 5 dgt.)		 400 OHM: +-(1% rdg + 4 dgt.)
4 kOHM to 4 MOhm: +-(0.8% rdg + 4 dgt.)
40 MOHM: +-(2% rdg + 5 dgt.)
Open Circuit Voltage 3.2 VDC typ. -0.45 VDC typ. (-1.2 VDC on 400 OHM range) 0.6 VDC typ. (3.2 VDC on 400 OHM range)
Overload Protection 500 VDC or AC rms 500 VDC or AC rms  
Diode Test Tested at 1 mA, 3.2 VDC max. typ.
+-(1% rdg + 10 dgt.) accuracy		 Tested at 1.2 mA, 3.0 VDC max. typ.
+-(1.5% rdg + 3 dgt.) accuracy		 Tested at 1 mA, 3.2 VDC max. typ.
+-(1.5% rdg + 3 dgt.) accuracy
Transistor Test (hFE) Does not apply Does not apply hFE range: 0 - 1000
hFE base current: 10 uA DC
Capacitance      
Ranges Does not apply 4 nF, 40 nF, 400 nF, 4 uF, 40 uF, 400 uF, 4 mF, 40 mF 4 nF, 40 nF, 400 nF, 4 uF, 40 uF
Resolution   1 pF, 10 pF, 100 pF, 1 nF, 10 nF, 100 nF, 1 uF, 10 uF 0.1 pF, 1 pF, 10 pF, 100 pF, 1 nF
Accuracy   4 nF: +-(3% rdg + 20 dgt.) 4 nF to 40 uF: +-(3% rdg + 5 dgt.)
400uF to 40 mF: +-(5% rdg + 10 dgt.)		 +-(3% rdg + 4 dgt.)
Test Voltage   < 1V < 3.5V
Overload Protection   500 VDC or AC rms
Frequency      
Ranges 2 kHz, 20 kHz, 200 kHz 4 kHz, 40 kHz, 400 kHz, 4 MHz, 40 MHz 4 kHz, 40 kHz, 400 kHz, 4 MHz
Resolution 0.1 Hz, 1 Hz, 10 Hz 1 Hz, 10 Hz, 100 Hz, 10 kHz, 100 kHz 1 Hz, 10 Hz, 100 Hz, 10 kHz
Accuracy +-(0.1% rdg + 3 dgt.) +-(0.1% rdg + 3 dgt.) +-(0.25% rdg + 4 dgt.) +-(0.1% rdg + 2 dgt.)
Sensitivity 50 mV rms min. (@>30 & <70% duty cycle: 400 mV rms min.) 1 Hz - 4 MHz: 1V rms
4 MHz-40MHz: > 2V rms, <5V rms		 250 V rms min. on 10 Hz to 1 MHz
500 mV rms min. on 1 MHz to 4 MHz
Minimum Pulse Width > 25 ns > 25 ns > 2 us
Duty Cycle Limits > 30% & <70% > 30% & <70%
Minimum Input Range 2 kHz: 10Hz: 20 kHz: > 60 dgt; 200 kHz > 60 dgt  
Overload Protection 500 VDC or AC rms 500 VDC or AC rms
Logic Test    
Logic Threshold Hi=2.8+-0.8V, 0=0.8 +-0.5V Does not apply Does not apply Hi=2.8+-0.8V, 0=0.8 +-0.5V
Frequency Response 20 MHz     20 MHz
Pulse Width 25 ns     25 ns
Pulse Limits > 20% and < 80%     > 20% and < 80%
Indication 40m sec beep at logic 1 (Hi)     40m sec beep at logic 1 (Hi)
Overload Protection 500 V DC or AC rms     500 V DC or AC rms
Temperature    
Range, Resolution Does not apply -58 0 to +2372 0 F, 1 0 F (-50 0 to +1300 0 C) Does not apply Does not apply
Accuracy   +-(0.8% rdg + 2 0 C) -50 0 - 400 0 C
+-(1% rdg + 2 0 C) 400 0 - 1300 0 C)		    
Duty Cycle    
Range, Resolution 0 to 90%, 0/1% Does not apply Does not apply Does not apply
Accuracy (5V logic) +-(2.0% + 10 dgt.)      
Minimum Pulse Width 10 us      
Frequency Range 40 Hz to 20 kHz      
Overload Protection 500 VDC or AC rms      
General      
Display 20000 count, 4 1/2 digit LCD 4000 count, 3 3/4 digit LCD with 41 segment analog bar graph 4000 count, 3 3/4 digit LCD
Polarity Automatic, positive implied, negative polarity indication
Operating Temperature 32 0 to 122 0 (0 0 to 50 0 C), 0 to 70% R.H.
Dimensions (HxWxD) 7.8x3.5x1.57'' (198x90x40 mm)
Weight 11.3 oz. (320g)
Three Year Warranty
Accessories
SUPPLIED: 9V Battery, Test Leads, Instruction Manual, Thermocouple Probe (Model 390)
OPTIONAL: TL-2A Deluxe Test Leads, TL-3 Accessory Tip Kit (for TL-2A), PR-28A High Voltage Probe (40kVDC), TL-130A General Purpose DMM Kit
Carrying Case (not included): LC-29B
*10 A continuous, 20A for 30 seconds max.



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