D-FL 200 / Rev. 6 31
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Industrie Elektronik GmbH & Co KG
10.3.4. Fourth Page / Signal
On this page the ultrasonic signal can directly be displayed. This is done with the "request“-Button. The
two charts display the received signals from sensor A and from sensor B.
(Fig. 25) Fourth page / Signal
velocity Average velocity of the gas flow in [m/s] (1m/s=3,28ft/s)
time
Transit time of the ultrasonic signal in [µs]
total idx Position of the maximum value inside the array of 3000 values. This represents
the time window in which the system looks for the ultrasonic signal. This time
window is set by the programmed length of the measuring path and the
programmed speed of sound. This value should be somewhere in the middle of
the array (about 1500)
index Position of the trigger point inside the displayed part of the array of 512 values
amfc The amplification of the variable amplifier. The maximum amplification is reached
with the value 1, the minimum amplification is 512. Normally this value is between
60 and 200.
power The transmit power of every sensor. Normally the values are about 800 (without
dimension). The minimum value for error detection is 600.
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