Product Description
FLOWSIC100 Flare · Operating Instructions · 8013344/11L2/V 2-5/2018-10 · © SICK Engineering GmbH 71
Subject to change without notice
2.3.4 Response time
The response time is the time the measuring device requires to attain 90% of the end value
after an abrupt change of the measured value (
→
Fig. 29). Typical values are 60 to 90 s.
The response time is freely adjustable in the range 1...600 s. A higher response time
causes higher damping of short-term measured value fluctuations and interference and
thus a "smoothed" output signal.
Separate response times exist for the measurement of gas velocity and gas temperature.
Volume flow and gas velocity have the same response time.
Fig. 29 Response time
The response time must be understood as a guide value only. If the signal
quality of the ultrasonic pulses is low, FLOWSIC100 Flare requires more
measured values for an output signal of the same precision. This increases
the response time within certain limits as compared with the set time.
10 20 30 40 50 60 70 80 90 100
100
98
96
94
92
90
88
86
84
Measured value
in%
90% of the signal peak
Measured value with response time
Process change
t in s
Response
time
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