BT521
Users Manual
1-12
Accuracy Specifications
Accuracy is specified for a period of one year after calibration, at 18 °C to 28 °C (64 °F
to 82 °F), with relative humidity to 80 %. Accuracy specifications are given as: ±([% of
reading] + [number of least significant digits]). Accuracy specification assumes ambient
temperature stable ±1 °C.
Function Range
Resolution
Accuracy
Battery Internal Resistance
[1]
3 m
Ω
0.001
m
Ω
1 % + 8
30 m
Ω
0.01
m
Ω
0.8 % + 6
300 m
Ω
0.1
m
Ω
0.8 % + 6
3000 m
Ω
1
m
Ω
0.8 % + 6
V dc
6 V
0.001 V
0.09 % + 5
60 V
0.01 V
600 V
0.1 V
1000 V
1 V
V ac (45 Hz to 500 Hz with low-
pass filter)
600 V
0.1 V
2 % + 10
Frequency (Display with V ac,
A ac using i410)
[2]
Trigger level:
≥
10 mV @V ac;
≥
10 A @A ac
45 Hz to 500 Hz
0.1 Hz
0.5 % + 8
AC Voltage Ripple (20 kHz
max)
600 mV
6000 mV
0.1 mV
1 mV
3 % + 20
3 % + 10
Amps dc/Amps ac (With
accessory Fluke i410)
400 A
1 A
3.5 % + 2
Temperature
0 °C to 60 °C
1 °C
2 °C (typical)
[1] The measurement is based on ac injection method. The injected source signal is <100 mA, 1 kHz.
[2] For A ac frequency measurement, the range is 45 Hz to 400 Hz.
1.888.610.7664
Fluke-Direct
.com
