Fluke 4180 Technical Manual page 53

# Test Name
Radiometric Accuracy
1
Test
2 Radiometric Alignment
Radiometric Accuracy
3
Test
Table 9. 4180 Radiometric Accuracy Test Settings and Specifications
Set-point
Soak (min)
(Nominal) (°C)
–15 15
0 15
50 15
100 15
120 15
Table 10. 4181 Radiometric Accuracy Test Settings and Specifications
Set-point
Soak (min)
(Nominal) (°C)
35
100
200
350
500
Radiometric Accuracy Test
1. Ensure that the DUT has stabilized at the first set-point before you start the Radiometric Accuracy
Test.
2. The Radiometric Accuracy Test requires one radiometric reference standard which must be aligned
at the center of the DUT's black body target. Align the DUT properly with the radiometric reference
standard.
Table 8. IR Target Testing Sequence
As Found/Alignment data - Do once at each point in
ascending (4180) descending (4181) order
Calculate offsets using Radiometric Accuracy data
As Left data – Perform once at each point in descending
(4180) order
Samples
100
100
100
100
100
Samples
15 100
15 100
15 100
15 100
15 100
Notes
Spec (±°C) Radiometric 2S Limit (°C)
0.400 0.100
0.400 0.050
0.500 0.050
0.500 0.085
0.550 0.100
Spec (±°C)
0.350
0.500
0.70
1.200
1.600
Precision Infrared Calibrator
Digital Communication Interface
Radiometric 2S Limit
(°C)
0.050
0.095
0.165
0.280
0.400
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