We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
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) | |
Bask 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 | 1100 VDC or AC rms | 1000 VDC or peak AC | 1200 VDC or AC rms | |
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 |
Specifications | 392 & 393 |
Current | |
Ranges | 600 μA, 6000 μA, 60 mA, 400 mA, 20 A* |
Resolution | 10 nA, 100 nA, 1 μA, 10 μA, 1 mA |
DC Accuracy | 600 μA to 60 mA: ±(0.5% rdg + 10 dgt) 400 mA: ±(1.0% rdg + 10 dgt) 20 A: ±(2.0% rdg + 10 dgt) |
AC Accuracy | 600 μA to 400 mA: ±(1.5% rdg + 20 dgt) 20 A: ±(2.5% rdg + 20 dgt) |
Input Protection | μA/mA input: 0.5A/100V fast blow ceramic fuse 20A input: 20A/600A fast blow ceramic fuse |
Max. Burden Voltage | 500 mV on 600 μA & 60 mA ranges, 2 V on 6000 μA range |
Resistance | |
Ranges | 600 Ω, 6 kΩ, 60 kΩ, 600 kΩ, 6 MΩ, 60 MΩ |
Resolution | 10 mΩ, 100 mΩ, 1 Ω, 10 Ω, 100 Ω, 1 kΩ |
Accuracy | 600 Ω: ±(0.3% rdg + 20 dgt), 6 kΩ to 6 MΩ: ±(0.3% rdg + 10 dgt), 6 MΩ: ±(1.0% rdg + 10 dgt), 60 MΩ: ±(3.0% rdg + 20 dgt) |
Open Circuit Voltage | -1.2 VDC typical, -3.0 VDC typical on 600 Ω range |
Overload Protection | 600 VDC or 600 VAC rms |
Diode Test | Tested at 0.5 mA, 2 VDC max. typical ±(2.0% rdg + 10 dgt) accuracy |
Transistor Test (hFE) | Does not apply |
Capacitance | |
Ranges | 6 nF, 60 nF, 600 nF, 6 μF, 60 μF, 600 μF, 6 mF |
Resolution | 1 pF, 10 pF, 100 pF, 1 nF, 10 nF, 100 nF, 1 μF |
Accuracy | 6 nF: ±(3% rdg+30 dgt), 60 nF to 600 μF: ±(3% rdg +10dgt), 6 mF: ±(5% rdg+10 dgt) |
Test Voltage | <1 V |
Overload Protection | 600 VDC or 600 VAC rms |
Frequency | |
Ranges | 60 Hz, 400 Hz, 6 kHz, 60 kHz, 600 kHz, 6 MHz, 10 MHz |
Resolution | 0.0001Hz, 0.01 Hz, 0.1 Hz, 1 Hz, 10 Hz, 100 Hz, 1 kHz |
Accuracy | ±(0.1% rdg + 10 dgt) |
Sensitivity | >100 ns |
Minimum Pulse Width | >25 ns |
Duty Cycle Limits | >30% & <70% |
Minimum Input Range | >0 Hz |
Overload Protection | 600 VDC or 600 VAC rms |
Logic Test | |
Logic Threshold | - |
Frequency Response | - |
Pulse Width | - |
Pulse Limits | - |
Indication | - |
Overload Protection | - |
Temperature | |
Range, Resolution | -58° to +2372°F, 0.1F°, (-50°to + 1300°C, 0.1C°) |
Accuracy | ±(2.0% rdg + 6°F) -58°F to 32°F & 750°F to 2372°F, ±(1.0% rdg + 2°F) 32°F to 750°F ±(2.0% rdg + 3°C) -50° to 0°C & 400°C to 1300°C, ±(1.0% rdg + 1°C) 0°C to 400°C |
Duty Cycle | |
Range, Resolution | 5 to 95%, 0.1% |
Accuracy (5V logic) | ±(2.0% rdg + 10 dgt) |
Minimum Pulse Width | 10 μs |
Frequency Range | 40 Hz to 20 kHz |
Overload Protection | 600 VDC or 600 VAC rms |
General | |
Display | 60000 count, 4 5/6 digit LCD |
Polarity | Automatic, positive implied, negative polarity indication |
Operating Temperature | 32° to 122° (0° to 50°C), 0 to 70% R.H. |
Dimensions (HxWxD) | 7.8 x 3.5 x 1.57" (198 x 90 x 40 mm) |
Weight | 14.1 oz. (400 g) |
Three-Year Warranty | |
Included Accessories 9 V battery, test leads, instruction manual, thermocouple probe (models 390A, 392, & 393), software and USB interface cable (models 390A & 393) |