Operation
6.4.3 Valley Hold
The output signal follows the object temperature until a minimum is found. Once the hold time is exceeded the output signal, tracks and output the actual object temperature and the algorithm will start over again. The range for the hold time is 0.1 to 998.9 s.
Temp
output temperature object temperature
hold time
hold time
Time
Figure 27: Valley Hold
A defined hold time of 999 s (symbol “∞” in the display) will put the device into continuous valley detection mode.
A low level input (GND) at external input FTC3 will promptly interrupt the hold time and will start the minimum detection again.
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