User manual
Installation
• Ambient background temperature compensation from a second
temperature se nsor (infrared or contact temperature sensor)
ensures extremely accurate results. For example, the output of
the second unit, set for mV output, could be connected to the
FTC2 analog input (0 to 5 VDC corresponding to low end and
high end of
temperature range) is utilized for real time
compensation, whereby both sensors must be set on the same
temperaturerange.
Target object
Furnace wall
0
–
5 VDC
analog outpu
t
at FTC2 inpu
t
Thermal radiation
of ambient
Thermal radiation
of target
Sensor 1
targeted
to ob
j
ec
t
Sensor 2
targeted
to ambien
t
Figure16:PrincipleofAmbientBackgroundTemperature
Compensation
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