As Left Accuracy; As Left Uniformity - Fluke 9190A Operator's Manual

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.
UUT
Number of
SETPOINT
Samples
°C
140 °C 40
100 °C 40
25 °C 40
0 °C 40
−45 °C
40
−95 °C
40

As Left Uniformity

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