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12 Appendix
12.1 Determination of Slope (for 2 – color operation)
The following slope settings are approximate and will vary depending on the metal alloy and surface
finish, as well as the application. These are supplied here as examples.
Set the slope to approximately 1.000 for measuring the following metals with oxidized surfaces:
Set the slope to approximately 1.060 for measuring the following metals with smooth, clean,
unoxidized surfaces:
Molten iron also has an approximate slope setting of 1.060.
How to determine slope?
The most effective way to determine and adjust the slope is to take the temperature of the material
using a probe sensor such as an RTD, thermocouple, or other suitable method. Once you determine
the actual temperature, adjust the slope setting until the sensor's temperature reads the same as the
actual temperature reading. This is the correct slope for the measured material.
12.2 Percentage of allowed signal reduction
Figure 33 and Figure 34 show each sensor model's percentage of allowed signal reduction at all
temperatures. Refer to these graphs to estimate what percentage of target area must be visible to the
sensor at temperatures below the minimum temperature (95% attenuation) as shown in Table 1:
Models of this manual.
ENDURANCE 1R
info@Raytek-Direct.ca
• Stainless Steel
• Cobalt
• Iron
• Nickel
• Iron
• Nickel
• Stainless Steel
• Rhodium
• Cobalt
• Steel
• Molybdenum
• Platinum
• Steel
• Tantalum
• Tungsten
Rev. E1 Sep 2015
Appendix
59
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