Fluke 8508A - Page 142

8508A
Users Manual
Resistance - Normal Mode (Secondary Specifications)
[1] [2] [3] [10]
Range
Measurement
Current
Transfer
Uncertainty
20 mins ±1 °C
± (ppm Reading
Temperature Coefficient
15 °C - 30 °C
5 °C - 15 °C
30 °C - 40 °C
5 °C - 40 °C
[16]
+ ppm Range)
± ppm Reading/°C
± Ω/°C
2 Ω
20 Ω
200 Ω
2 kΩ
20 kΩ
200 kΩ
2 MΩ
20 MΩ
200 MΩ
2 GΩ
100 mA
10 mA
10 mA
1 mA
100 µA
100 µA
10 µA
1 µA
100 nA
10 nA
2.0 + 2.0
0.8 + 0.7
0.2 + 0.15
0.2 + 0.15
0.2 + 0.15
0.2 + 0.15
0.5 + 0.5
2.5 + 5
15 + 50
200 + 500
1.5
0.6
0.5
0.5
0.5
0.5
0.6
2
20
200
2.5
1.0
0.8
0.8
0.8
0.8
1.0
3
30
300
1.5 µ
15 µ
20 µ
200 µ
2 m
10 m
100 m
1
10
100
Resistance - Lo Current Mode (Secondary Specifications)
[1] [2] [3] [10]
Range
Measurement
Current
Transfer
Uncertainty
20 mins ±1 °C
± (ppm Reading
Temperature Coefficient
15 °C - 30 °C
5 °C - 15 °C
30 °C - 40 °C
5 °C - 40 °C
[16]
+ ppm Range)
± ppm Reading/°C
± Ω/°C
2 Ω
20 Ω
200 Ω
2 kΩ
20 kΩ
200 kΩ
2 MΩ
20 MΩ
200 MΩ
2 GΩ
100 mA
10 mA
1 mA
100 µA
10 µA
10 µA
1 µA
100 nA
10 nA
10 nA
2.0 + 2.0
0.8 + 0.7
0.8 + 0.7
0.8 + 0.7
0.8 + 0.7
0.5 + 0.5
2.0 + 0.5
15 + 5
200 + 500
200 + 500
1.5
0.6
0.6
0.6
0.6
0.6
2
20
200
200
2.5
1.0
1.0
1.0
1.0
1.0
3
30
300
300
1.5 µ
15 µ
150 µ
1.5 m
15 m
20 m
200 m
2
20
100
Resistance - High Voltage Mode (Secondary Specifications)
[1] [2] [3]
Range
Measurement
Current
Transfer
Uncertainty
20 mins ±1 °C
± (ppm Reading
Temperature Coefficient
15 °C - 30 °C
5 °C - 15 °C
30 °C - 40 °C
5 °C - 40 °C
[16]
+ ppm Range)
± ppm Reading/°C
± Ω/°C
20 MΩ
200 MΩ
2 GΩ
20 GΩ
[18]
10 µA
1 µA
100 nA
10 nA
0.5 + 0.5
2.0 + 0.5
15 + 50
200 + 500
0.6
2.0
20
200
1.0
3
30
300
2
20
200
2k
Type........................................................................ True 4-wire with Ohms guard. 2-wire selectable.
2 Wire Adder.......................................................... ±(10 pA/Ir) x 10
6
ppm of Reading ±50 m ±3 m/°C, where Ir is the
measurement current, where the temperature related factor is based
on the temperature difference between the present operating
temperature and the temperature where the instrument was last
zeroed.
Max Lead Resistance............................................ 10 Ω in any or all leads, 1 Ω on 2 Ω range
Full Scale Measurement Voltage
Normal Mode .......................................................... 200 mV/2 V/20 V
Lo Current Mode ..................................................... 200 mV/2 V/20 V
High Voltage Mode ................................................. 200 V
Protection (All ranges) .......................................... 250 V rms, 360 V pk
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