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The 2831E and 5491B are versatile and dependable bench-top digital multimeters suitable for applications in education, service & repair and manufacturing requiring basic and reliable measurements. Additionally, these multimeters enhance your productivity with built-in math functions and USB connectivity, features not found in other bench meters in this price category.
The meters take typical multimeter measurements such as volts, ohms, and amps with great accuracy and stability and were designed for cost conscious users requiring a basic and dependable meter with a broad range of extra features offered at a value price.
DC Voltage
Resolution, Full Scale Reading and Accuracy ± (% of reading + % of range), 23 °C ± 5 °C | ||||||
Model |
Rate |
Range |
Resolution | Full Scale Reading | Accuracy (1 year) | Typical Input Impedance |
5491B |
Slow | 500.00 mV | 10 µV | 510.00 | 0.02%+0.016% (1) | >10 MΩ |
5.0000 V | 100 µV | 5.1000 | 0.02%+0.008% (1) | >11.1 MΩ | ||
50.000 V | 1 mV | 51.000 | 0.02%+0.008% | >10.1 MΩ | ||
500.00 V | 10 mV | 510.00 | 0.02%+0.008% | 10 MΩ | ||
1000.0 V | 100 mV | 1010.0 (2) | 0.02%+0.008% | 10 MΩ | ||
(1) under REL status | ||||||
(2) 1% over-range (1010 V) is readable at 1000 V range | ||||||
AC Voltage
Resolution, Full Scale Reading and Accuracy ± (% of reading + % of range), 23 °C ± 5 °C | ||||||||
Model |
Rate |
Range |
Resolution |
Full Scale Reading | Accuracy (1 year)(1) 23 °C ± 5 °C | |||
20~50 Hz | 50~20 kHz | 20~50 kHz | 50~100 kHz | |||||
5491B |
Slow | 500.00 mV | 10 µV | 510.00 | 1.0%+0.08%) | 0.5%+0.06% | 1.5% + 0.1% | 3.0% + 0.3% |
5.0000 V | 100 µV | 5.1000 | 1.0%+0.08%) | 0.35%+0.02% | 1% + 0.04% | 3.0% + 0.1% | ||
50.000 V | 1 mV | 51.000 | 1.0%+0.08% | 0.35%+0.02% | 1% + 0.04% | 3.0% + 0.1% | ||
500.00 V | 10 mV | 510.00 | ---- | 0.5%+0.03% | 1% + 0.04% | 3.0% + 0.1% | ||
750.0 V | 100 mV | 757.5(3) | ---- | 0.5%+0.03% | 1% + 0.04% (2) | 3.0% + 0.1% (2) | ||
Max. crest factor: 3.0 at full scale | ||||||||
(1) Specifications are for sine wave inputs >5% of range. | ||||||||
(2) Limit at 40 kHz or ≤ 3×107 Volt-Hz for 750 V range | ||||||||
(3) 1% over-range (757.50V) is readable at 750V range | ||||||||
DC Current
Resolution, Full Scale Reading and Accuracy ± (% of reading + % of range), 23 °C ± 5 °C | ||||||
Model |
Rate |
Range |
Resolution | Full Scale Reading | Accuracy (1 year) | Burden Voltage(1) & Shunt Resistor |
5491B |
Slow | 5.0000 mA | 0.1 µA | 5.1000 | 0.05%+0.01% (2) | <0.6 V / 100 Ω |
50.000 mA | 1 µA | 51.000 | 0.05%+0.008% (2) | <0.06 V / 1 Ω | ||
500.00 mA | 10 µA | 510.00 | 0.05%+0.008% | <0.6 V / 1 Ω | ||
5.0000 A | 100 µA | 5.1000 | 0.25%+0.01% | <0.1 V / 10 mΩ | ||
20.000 A | 1 mA | 21.000 (3) | 0.25%+0.01% | <0.6 V / 10 mΩ | ||
(1) Typical voltage across the input terminals at full scale reading. | ||||||
(2) Use REL function | ||||||
(3) In 20 A range, >10~20 ADC is readable for 20 seconds maximum | ||||||
AC Current (True RMS, AC Coupling)
Resolution, Full Scale Reading and Accuracy ± (% of reading + % of range), 23 °C ± 5 °C | |||||||
Model |
Rate |
Range |
Resolution |
Full Scale Reading | Accuracy (1 year)(1) 23 °C ± 5 °C | ||
20~50 Hz | 50~2 kHz | 2~20 kHz | |||||
5491B |
Slow | 5.0000 mA | 0.1 µA | 5.1000 | 1.5%+0.16% | 0.5%+0.08% | 2%+0.16% |
50.000 mA | 10 µA | 51.000 | 1.5%+0.16% | 0.5%+0.08% | 2%+0.12% | ||
500.00 m A | 100 µA | 510.00 | 1.5%+0.16% | 0.5%+0.08% | 2%+0.12% | ||
5.0000 A | 1 mA | 5.1000 | 2.0%+0.16% | 0.5%+0.1% | ---- | ||
20.000 A | 10 mA | 21.000 (2) | 2.0%+0.16% | 0.5%+0.1% | ---- | ||
Max. crest factor: 3.0 at full scale | |||||||
(1) Specifications are for sine wave inputs >5% of range. | |||||||
(2) In 20 A range,>10~20 A AC is readable for 20 seconds maximum | |||||||
Resistance
Resolution, Full Scale Reading and Accuracy ± (% of reading + % of range), 23 °C ± 5 °C | ||||||
Model |
Rate |
Range (1) |
Resolution | Full Scale Reading |
Test current | Accuracy (1 year) |
5491B |
Slow | 500.00 Ω | 10 mΩ | 510.00 | 0.5 mA | 0.10%+0.01% (2) |
5.0000 kΩ | 100 mΩ | 5.1000 | 0.45 mA | 0.10%+0.008% (2) | ||
50.000 kΩ | 1 Ω | 51.000 | 45 µA | 0.10%+0.008% (2) | ||
500.00 kΩ | 10 Ω | 510.00 | 4.5 µA | 0.10%+0.008% | ||
5.0000 MΩ | 100 Ω | 5.1000 | 450 nA | 0.15%+0.008% | ||
50.000 MΩ | 1 kΩ | 51.000 | 45 nA | 0.3%+0.01% | ||
(1) In order to eliminate the noise interference, which might be induced to the test leads, it is recommended to use a shielded test cable for measuring resistance above 100 kΩ. | ||||||
(2) Using REL function | ||||||
Continuity
Resolution, Full Scale Reading and Accuracy ± (% of reading + % of range), 23 °C ± 5 °C | |||||
Model |
Range |
Resolution | Full Scale Reading |
Test current | Accuracy (1 year) 23 ºC ± 5 ºC |
5491B | 500 Ω | 100 mΩ | 999.9 | 0.5 mA | 0.1%+0.04% |
Open circuit voltage: <5.5 VDC | |||||
Test current: around 0.5 mA DC | |||||
Diode
Resolution, Full Scale Reading and Accuracy ± (% of reading + % of range), 23 °C ± 5 °C | ||||
Rate |
Range |
Resolution | Full Scale Reading |
Test current |
Med | 2.0000 V | 100 µV | 2.3000 V | 0.5 mA (Approx.) |
Frequency
Resolution, Full Scale Reading and Accuracy ± (% of reading + % of range), 23 °C ± 5 °C | |||||
ACV Range | Frequency Range | Best Resolution | Full Scale Reading |
Accuracy | Input Sensitivity (Sine Wave) |
200 mV (500 mV*) to 750V | 10 Hz | 100 µHz | 9.9999 | 0.05%+0.02% | 200 mV rms |
10~100 Hz | 1 mHz | 99.999 | 0.01%+0.02% | 300 mV rms | |
100~100 kHz | 10 mHz | 999.99 | 0.01%+0.008% | 300 mV rms | |
100k~1 MHz | 10 Hz | 999.99 | 0.01%+0.008% | 500 mV rms | |
* Model 5491B | |||||
Period
Resolution, Full Scale Reading and Accuracy ± (% of reading + % of range), 23 °C ± 5 °C | |||||
ACV Range | Frequency Range | Best Resolution | Full Scale Reading |
Accuracy | Input Sensitivity (Sine Wave) |
200 mV (500 mV*) to 750V | 1~10 µs | 0.1 ns | 9.9999 | 0.01%+0.008% | 500 mV rms |
10 µs~10 ms | 1 ns | 9.9999 | 0.01%+0.008% | 300 mV rms | |
10 ms~100 ms | 1 µs | 99.999 | 0.01%+0.02% | 300 mV rms | |
100 ms | 10 µs | 199.99 | 0.05%+0.02% | 200 mV rms | |
* Model 5491B | |||||
General
Power Supply | Power Consumption | Operating Environment | Storage Environment |
Warm-up | Dimensions (W×H×D) | Net Weight |
110/220 V ± 10%, 50/60 Hz ± 5% |
≤ 10VA | 0 °C to 40 °C, ≤ 90 %RH |
-40 °C to 70 °C |
at least 30 minutes | 225 mm×100 mm×355 mm 8.85” x 3.93 “ x 13.97” | 2.5 kg 5.51 lbs |
One Year Warranty (2831E), Three Year Warranty (5491B) | ||||||
Accessories Included: Test leads, Power cord, Spare fuse, Operation Manual , Calibration certificate and test report | ||||||
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