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4.4 Post Processing
4.4.1 Averaging
Averaging is used to smooth the output signal. The signal is smoothed depending on the defined time
basis. The output signal tracks the detector signal with significant time delay but noise and short peaks
are damped. Use a longer average time for more accurate damping behavior. The average time is the
amount of time the output signal needs to reach 90% magnitude of an object temperature jump.
Attention: The disadvantage of averaging is the time delay of the output signal. If the temperature
jumps at the input (hot object), the output signal reaches only 90% magnitude of the actual object
temperature after the defined average time.
A low level input (GND) at external input FTC3 will promptly interrupt the averaging and will start the
calculation again.
4.4.2 Peak Hold
The output signal follows the object temperature until a maximum is reached. The output will „hold"
the maximum value for the selected duration of the hold time. Once the hold time is exceeded, the peak
hold function will reset and the output will resume tracking the object temperature until a new peak is
reached. The range for the hold time is 0.1 to 998.9 s.
XR
Temp
Figure 16: Averaging
Temp
Haltezeit
Figure 17: Peak Hold
Rev. B2 Feb 2017
Output temperature
Object temperature
Temperature jump
90% of
temperature
jump
Average Time
Output temperature
Object temperature
Hold Time
Time
Operation
Time
25
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