Operation
MI3
51
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.
8.5.2
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.
Figure 36: Peak Hold
A defined hold time of 999 s (symbol “∞” in the display) will put the device into continuous peak
detection mode.
A low level input (GND) at external input FTC3 will promptly interrupt the hold time and will start
the maximum detection again.
8.5.3
Valley Hold
The output signal follows the object temperature until a minimum is reached. The output will „hold“
the minimum value for the selected duration of the hold time. Once the hold time is exceeded, the
valley hold function will reset and the output will resume tracking the object temperature until a new
valley is reached. The range for the hold time is 0.1 to 998.9 s
output temperature
object temperature
hold time
hold time
Temp
Time
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