RayTek MI Miniature Infrared Sensor - Valley Hold

Operation
MI 41
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.

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.
output temperature
object temperature
hold time
hold time
Temp
Time