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Instruction Manual MM850341 ed.01a
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4.3
Valley
The Valley function holds the minimum temperature and retain its until a lower value appear or an external reset
signal appear to increase the output to the current temperature measurement.
4.4
Peak-Picker
The peak-picker function holds a peak signal and allows it to decay slowly until the arrival of the next peak. It is
used in such applications as rolling mills where the signal is occasionally lowered by steam, smoke, water
droplets, metal scale, etc. When Peak-Picker function is programmed, the 4/20 mA output will follows the
mathematical expression below:
U = Peak – (PickDec * 2
∆
T)
dove :
U
= output signal
Peak
= peak signal
PickDec
= Decay rate °C/sec (programmable)
∆T
= sampling time
Temperature
Time
Decay rate (PickDec)
Programmable (0.0 to 1999.9 °C/S)
4.4.1
Peak-Picker with reset
When the Peak-Picker with reset function is selected, the external reset input is used to force the signal output to
the current temperature measurement.
