Fluke 9190A - As Left Accuracy; As Left Uniformity

Calibration
Temperature Source Calibration 4
4-13
As Left Accuracy
Take primary PRT data at each of the UUT SETPOINT temperatures listed in Table 4-7.
Let the UUT stabilize and then soak for 45 minutes for each of the temperatures.
Table 4-7. As Left Accuracy Specifications
UUT
SETPOINT
°C
Number of
Samples
Average
PRT
Primary
Reading
°C
Error: PRT
Primary –
SETPOINT
°C
Specification
(±°C)
2σ PRT
Primary
2σ Limit
(over the
40
samples)
140 °C 40 0.200 °C 0.02 °C
100 °C 40 0.200 °C 0.02 °C
25 °C 40 0.200 °C 0.02 °C
0 °C 40 0.200 °C 0.02 °C
−45 °C 40 0.200 °C 0.02 °C
−95 °C 40 0.200 °C 0.02 °C
As Left Uniformity
The final uniformity data found in step 11 of the Uniformity Alignment 3
rd
Iteration can
be used for the As Left uniformity data. Use the data from the final iteration for each of
the three different temperatures.
Table 4-8. As Left Uniformity Results
UUT
SETPOINT °C
Number of
Samples
Average PRT
Secondary °C
Average PRT
Primary °C
Uniformity
Error °C =
PRTsec-
PRTprim
Specification
°C
140 °C 40 0.05 °C
100 °C 40 0.05 °C
25 °C 40 0.05 °C
0 °C 40 0.05 °C
−45 °C 40 0.05 °C
−95 °C 40 0.05 °C