Fluke 917X Series Technical Manual page 109

Table 14 Heat source as found data/as left data specifications
Model Set-Point
9170
(Descending
Order)
9171
(Descending
Order)
9172
(Ascending Order)
9173
(Ascending Order)
3. Heat source manual adjustment and as left data
a. Axial (vertical) gradient adjustment (alignment)
i. Ensure that the test sleeve has two ¼" wells. One of the wells
needs to have a 40mm plug in it or needs to be drilled 40mm
shorter than the other well. Ensure the test sleeve is specific to the
model being calibrated.
ii. Place a PRT in each well.
iii. One PRT for the reference temperature PRT goes in the deeper of
the two wells.
iv. One PRT for the differential temperature PRT goes in the shallower
of the two wells giving an axial displacement of 40mm from the
bottom.
v. Set the unit to the first set-point (Low temperature set-point) as
indicated in Table 13, Axial gradient as found/as left specifications,
on opposite page.
Spec (±
Soak Time
–45 30 min
–35
0
50
100
140
–30 30 min
0
50
100
155
100 30 min
150
250
350
425
100 30 min
200
350
500
660
Calibration of your Metrology Well
°C) Guard Band (%)
0.100 100
0.100 100
0.100 100
0.150
0.150
0.200
0.200
0.200 100
0.200
0.200
0.250
0.250
Procedure
2σ Spec (°C)
60 0.008
60 0.008
60 0.008
0.010
0.012
0.014
0.016
60 0.008
0.012
0.016
0.020
0.030
101