Dc Ma Measurement And Source; Ohms Measurement; Ohms Source; Frequency Measurement - Fluke 725Ex User Manual

725Ex
Users Manual

DC mA Measurement and Source

Range Resolution
24 mA 0.001 mA
Temperature coefficient -10 °C to 18 °C, +28 °C to
55 °C: ±0.005 % of range per °C
Drive capability: 250 Ω at 20 mA

Ohms Measurement

Ohms Range
0 Ω to 400 Ω
400 Ω to 1.5 kΩ
1.5 kΩ to 3.2 kΩ
Temperature coefficient -10 °C to 18 °C, +28 °C to
55 °C: ±0.005 % of range per °C
Excitation Current: 0.2 mA
Maximum input voltage: 30 V
* 2-wire: Does not include lead resistance.
3-wire: Assumes matched leads with a total resistance not
exceeding 100 Ω.
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Accuracy,
(% of Reading + Counts)
0.02 % + 2
Accuracy ± Ω*
4-Wire 2- and 3-Wire
0.1 0.15
0.5 1.0
1 1.5
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Ohms Source

Excitation Current
Ohms Range from Measurement
Device
15 Ω to 400 Ω 0.15 mA to 0.5 mA
15 Ω to 400 Ω 0.5 mA to 2 mA
400 Ω to 1.5 kΩ 0.05 mA to 0.8 mA
0.05 mA to 0.4 mA
1.5 kΩ to 3.2 kΩ
Temperature coefficient -10 °C to 18 °C, +28 °C to
55 °C: ± 0.005 % of resistance range per °C
Resolution
15 Ω to 400 Ω
400 Ω to 3.2 kΩ

Frequency Measurement

Range Resolution
2.0 CPM to 1000.0 CPM 0.1 CPM
1 Hz to 1000 Hz 1.0 Hz
1.0 kHz to 10.0 kHz 0.1 kHz
Sensitivity: 1 V peak-to-peak minimum
Waveform: squarewave
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Accuracy
± Ω
0.15
0.1
0.5
1
0.1 Ω
1 Ω
Accuracy
± (0.05 % + 1 count)
± (0.05 % + 1 count)
± (0.05 % + 1 count)
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