33
Operating instructions
1
2
3
4
5
OUT2
[mA]
t
1: Measuring object in front of pyrometer
2: Hold time
3: Measurement time of the second internal peak value memory
4: Measuring readings with peak hold function
5: Measuring readings without peak hold function
14.4 DTD function (Discontinuous Temperature Detection)
This function serves to automatically detect the temperature during manufacturing
processes with discontinuous or intermittent material flow. For example, thus can
determine the temperature of bolts with variable lengths, that move acyclic along
the pyrometer. A temperature threshold has to be defined for this purpose. The
measurement starts when the object temperature is higher than the set threshold.
• [
Q
] → [
Q.MEM
] = [
DTD
]
The measurement stops when the threshold is violated and the maximum value is
available at the analogue output.
The reset point is 5 K below the parameterised threshold.
In parallel, a sync pulse is given to OUT2. OUT2 is switching when the threshold is
exceeded, depending on the parameters set. If the value falls below the threshold,
OUT2 returns to its previous state.
• [
d2
] → [
d2.S
] = [
Sync.
]