Temperature Specifications - Fluke 8508A Extended Specifications

Temperature Readout
Resistance
Range
95 % Confidence Level
0 - 199.999 999
200 - 1999.999 99
99 % Confidence Level
0 - 199.999 999
200 - 1999.999 99
Temperature Readout
Resistance
Range
0 - 199.999 999
200 - 1999.999 99
Type
Temperature Range
Linearization
Current Source

Temperature specifications

[1] [2] [3]
Absolute Resistance
Measurement Uncertainty
[4]
365 day TCal ±1 °C
[11]
±(ppm Reading + m
7.5 + 0.14
7.5 + 0.5
9.5 + 0.18
9.5 + 0.6
(Secondary Specifications)
Transfer Uncertainty
20 Minute ±1 °C
±(ppm Reading + m
0.8 + 0.14
0.2 + 0.5
4-wire current reversal resistance measurement with readout of equivalent temperature.
2-wire and 3-wire selectable without current reversal. Refer to Resistance specifications for
additional details.
-200 °C to 660 °C, readout also available in °F or K.
ITS-90 or Callendar van Dusen. Entry and storage of coefficients and nominal resistance for
up to 100 probes.
1 mA
Typical Equivalent Temperature Measurement Uncertainty
Probe Nominal
Type Temp (°C)
25 PRT/SPRT -200
25 PRT/SPRT 0
25 PRT/SPRT 660
100 PRT/SPRT -200
100 PRT/SPRT 0
100 PRT/SPRT 232
100 PRT/SPRT 400
25 PRT/SPRT -200
25 PRT/SPRT 0
25 PRT/SPRT 660
100 PRT/SPRT -200
100 PRT/SPRT 0
100 PRT/SPRT 232
100 PRT/SPRT 400
[1] [2] [3]
Resistance Measurement Uncertainty
2-Wire Adder 3-Wire Adder
( ) ( )
0.1 0.005
0.1 0.005
Resistance
( )
5
25
84
20
100
185
250
5
25
84
20
100
185
250
Temp Coeff. ± ppm Reading/°C
5 °C - 15 °C
15 °C - 30 °C 30 °C - 40 °C
0.6
0.5
Fluke Corporation 8508A Extended Specifications
[12]
Accuracy
± (°C)
0.0085
0.0035
0.0025
0.0035
0.0025
0.0020
0.0025
0.0100
0.0040
0.0025
0.0040
0.0025
0.0020
0.0025
1.0
0.8
13