Datasheet
4 www.bk precision.com
True RMS Bench Multimeters
M
odels 2831E and 5491B
Resolution, Full Scale Reading and Accuracy ± (% of reading + % of range), 23 °C ± 5 °C
Rate Range Resolution
Fu ll Scale
Reading
Accu ra cy( 1 year)(1) 23 ° C ± 5 °C
20~ 50 Hz 50~2 kH z
2~20 k Hz
Slow
2
.0000 mA
0
.1 µA
2
.1000
1
.5%+0.5%
0
.5%+0.3%
2
%+0.5%
20.000 mA 10 µA 21.000 1.5%+0.5% 0.5%+0.3%
2%+0.38%
2
00.00 m A
1
00 µA
2
10.00
1
.5%+0.5%
0
.5%+0.3%
2
%+0.38%
2.0000 A 1 mA 2.1000 2.0%+0.5% 0.5%+0.3%
----
2
0.000 A
1
0 mA
2
1.000 (2)
2
.0%+0.5%
0
.5%+0.3%
-
---
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% ----
2
0.000 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
AC Current (True RMS, AC Coupling)
Resolution, Full Scale Reading and Accuracy ± (% of reading + % of range), 23 °C ± 5 °C
Rate Range ( 1) Resolution
Ful l Scale
Reading Test current
Accura cy
(1 year)
Slow
200.00 Ω 10 mΩ 210.00 0.5 mA 0.10%+0.05% (2)
2.0000 kΩ 100 mΩ 2.1000 0.45 mA 0.10%+0.025% (2)
20.000 kΩ 1 Ω 21.000 45 µA 0.10%+0.025% (2)
200.00 kΩ 10 Ω 210.00 4.5 µA 0.10%+0.025%
2.0000 MΩ 100 Ω 2.1000 450 nA 0.15%+0.025%
20.000 MΩ 1 kΩ 21.000 45 nA 0.3%+0.05%
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
Resistance
Resolution, Full Scale Reading and Accuracy ± (% of reading + % of range), 23 °C ± 5 °C
Range
Resolution
Full Scale
Reading Test curre nt
Accu ra cy (1 year)
23 ºC ± 5ºC
200 Ω 100 mΩ 999.9 0.5 mA 0.1%+0.1%
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
Continuity
Specifications (cont.)
2831E
5491B2831E5491B
2831E
5491B