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series
%/C tables for SOLOnet thermometers are provided at the end of this
Appendix.
Determine what temperature correction you would like to apply – ∆T (ensure
that you start with user calibration = 1000)
Look up the thermometer %/C sensitivity (S) in the appropriate table – linearly
interpolating between values if required.
Calculate the required User_Calibration:
User_Calibration = 1000 + Θ *S *∆T
Example
IQ1 reads 1002 °C.
User wants it to read 1000 °C, so ∆T= -2 °C
From the IQ1 %/C table, S = 0.93 @ 1000 °C
So...
User_Calibration = 1000 + Θ *0.93 *(-2) = 981
Practical Method
Whilst in the user configuration screen, adjust and apply new user_calibration
values until displayed temperature matches desired value
Window Correction
Normally the window transmission (T) will be known. In this case its effect can
be corrected by
_
User
Calibratio
Where T is the fractional transmission (1 = perfect transmission)
Window transmission = 0.9
User
_
Calibratio
Note that this calculation assumes that window reflections contribute
negligible radiant energy compared to the target. This is generally true for
high temperature thermometry. At low temperatures (e.g. room temperature
thermometry), window losses may be better corrected using the Emissivity
setting.
If the window transmission is not known then either of the previously described
methods ('Using %/C tables' or 'Practical Method') could be used to obtain the
required user_calibration
B - 2
1000
n
=
T
,
1000
n
1111
=
=
0
9 .
.
Fixed Spot Thermometer
User Guide
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