TO Flame Sensing Evaluation Kit (Analog) USEQFCK4000000
The above information is believed to be correct but does not purport to be all inclusive and must be used only as a guide.
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10
Figure 10
– Flame Sensing
Window Size:
This controls the speed of the algorithm versus the stability to momentary
fluctuations. A value of 128 can be treated as the middle setting. A lower value of window size
gives faster response, but also less immunity to noise, both from the sensor and electronics
and from the scene seen by the sensors. A higher value increases stability and glitch rejection.
However detection time is increased to around 15 seconds with the highest setting.
10 Hz Response:
This is the final result from the preprocessing for each channel. The relative
levels from the channels are shown on the horizontal bars when the algorithm is enabled.
Threshold Multiplier:
This selects what proportion of the overall threshold is applied to each
channel.
Overall Threshold:
This slider controls the algorithm detection level. The higher the threshold,
the bigger flame is needed to trigger the flame detection algorithm. After moving the slider,
check the
Overall Threshold
column next to the
Threshold Multipliers
for each channel.
The detection is triggered when all channels
10 Hz Response
rises above their respective
overall thresholds. For flame decision to be made and the flame icon to show, the flame
channel (Ch1) needs to be above other channels by its threshold value also.
