RayTek MI Miniature Infrared Sensor - Manual (Page 48)

Operation
40 MI
6.4.2 Peak Hold
The output signal follows the object temperature until a maximum 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 26: 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.
output temperature
object temperature
hold time
hold time
Temp
Time