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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 mΩ 0.001 mΩ
1 % + 8
30 mΩ 0.01 mΩ
0.8 % + 6
300 mΩ 0.1 mΩ
0.8 % + 6
3000 mΩ 1 mΩ
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 sales@GlobalTestSupply.com
Fluke-Direct.com
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