Fluke 5520A - Resistance Specifications

Manual Supplement 5520A Operator
6 7/11
Resistance Specifications
Range
[1]
Absolute Uncertainty, tcal ±5 °C
±(ppm of output + floor)
[2]
Resolution
Ω
Allowable Current
[3]
ppm of output
Floor
Time & temp since ohms zero cal
90 days 1 year
12 hrs ±1 °C 7 days ±5 °C
0 to 10.9999 Ω
35 40 0.001 0. 01 0.0001 1 to 125 mA
11 to
32.9999 Ω
25 30 0.0015 0.015 0.0001 1 to 125 mA
33 to
109.9999 Ω
22 28 0.0014 0.015 0.0001 1 to 70 mA
110 to
329.9999 Ω
22 28 0.002 0.02 0.0001 1 to 40 mA
330 Ω to
1.099999 kΩ
22 28 0.002 0.02 0.001 1 to 18 mA
1.1 to
3.299999 kΩ
22 28 0.02 0.2 0.001
100 μA to 5 mA
3.3 to
10.99999 kΩ
22 28 0.02 0.1 0.01
100 μA to 1.8 mA
11 to
32.99999 kΩ
22 28 0.2 1 0.01
10 μA to 0.5 mA
33 to
109.9999 kΩ
22 28 0.2 1 0.1
10 μA to 0.18 mA
110 to
329.9999 kΩ
25 32 2 10 0.1
1 μA to 0.05 mA
330 kΩ to
1.099999 MΩ
25 32 2 10 1
1 μA to 0.018 mA
1.1 to
3.299999 MΩ
40 60 30 150 1
250 nA to 5 μA
3.3 to
10.99999 MΩ
110 130 50 250 10
250 nA to 1.8 μA
11 to
32.99999 MΩ
200 250 2500 2500 10 25 to 500 nA
33 to
109.9999 MΩ
400 500 3000 3000 100 25 to 180 nA
110 to
329.9999 MΩ
2500 3000 100000 100000 1000 2.5 to 50 nA
330 to
1100 MΩ
12000 15000 500000 500000 10000 1 to 13 nA
[1] Continuously variable from 0 Ω to 1.1 GΩ.
[2] Applies for a 4-WIRE compensation only. For 2-WIRE and 2-WIRE COMP, add 5 µV per Amp of stimulus current to the floor
specification. For example, in 2-WIRE mode, at 1 kΩ, the floor specification within 12 hours of an ohms zero cal for a
measurement current of 1 mA is:
0.002 Ω + (5 µV/1 ma) = (0.002 + 0.005) Ω = 0.007 Ω
[3] For currents lower than shown, the floor adder increases by:
Floor (new) = Floor (old) X Imin/Iactual.
For example, a 50 µA stimulus measuring 100 Ω, has a floor specification of: 0.0014 Ω X 1 mA/50 µA = 0.028 Ω, assuming an
ohms zero cal within 12 hours.