Fluke 45 - Page 23

Introduction and Specifications
Specifications
1
1-11
Maximum Crest Factor
3.0
Maximum Input
mA 300 mA dc or ac rms. Protected with a 500 mA, 250 V, IEC 127-sheet I, fast
blow fuse and a 440 mA, 1000 V, fast blow fuse.
A 10 A dc or ac rms continuous, or 20 A dc or ac rms for 30 seconds maximum.
Protected with a 11 A, 1000 V, 17,000 A interrupt rating, fast blow fuse.
Note
Resistance between the COM binding post and the meter’s internal
measuring circuits is approximately .003
Ω .
Ohms
Range Resolution Accuracy
Typical
Full Scale
Voltage
Max Current
Through the
Unknown
Slow Medium Fast
300 Ω - 10 mΩ 100
mΩ
0.05% + 2 + 0.02Ω 0.25 1 mA
3 kΩ - 100 mΩ 1Ω 0.05% + 2 0.24 120 µA
30 kΩ -1 Ω 10 Ω 0.05% + 2 0.29 14 µA
300 kΩ - 10 Ω 100 Ω 0.05% + 2 0.29 1.5 µA
3 MΩ - 100 Ω 1 kΩ 0.06% + 2 0.3 150 µA
30 MΩ -1 kΩ 2% 0.25% + 3 2.25 320 µA
300
MΩ*
- 100 kΩ 1 MΩ 2% 2.0 320 µA
100 Ω 1 mΩ - - 0.05% + 8 + 0.02Ω 0.09 1 mA
1000 Ω 10 mΩ - - 0.05% + 8 + 0.02Ω 0.10 12 µA
10 kΩ 100 mΩ - - 0.05% + 8 0.11 14 µA
100 kΩ 1 Ω - - 0.05% + 8 0.11 1.5 µA
1000 kΩ 10 Ω - - 0.06% + 8 0.12 150 µA
10 MΩ 100 Ω - - 0.25% + 6 1.5 150 µA
100 MΩ 100 kΩ - - 2% + 2 2.75 320 µA
* Because of the method used to measure resistance, the 100 MΩ (slow) and 300 MΩ(medium and fast)
ranges cannot measure below 3.2 MΩ and 20 MΩ, respectively. "UL" (underload) is shown on the display
for resistances below these nominal points, and the computer interface outputs "+1E-9".