FTS 21216, Руководство по эксплуатации

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700-SDI-RADAR-LX-80-Man Rev 1 08 Oct 2021 29 /49
Filter length - The length of the averaging filter, in number of readings, to smooth the measured
values. The instrument performs 1 reading per second, so a filter length value of 10 will
result in 10 seconds integration time. When using longer filter lengths, more measured
values are used for filtering, and the resulting data will be smoother. However, when the
water level changes, it will take more time for the new measurement to be reported.
Typically, this parameter should be set to a value between 10 and 50. For highly turbulent
water, a larger filter length is recommended.
#set_frame_number=<1-1000>
IIR constant - The constant used by infinite impulse response (IIR) filter - if IIR filter is selected to be
used instead of average filter. Accepted values are decimal numbers between 0 and 1. When
the IIR constant value is closer to 0.0, the filter response will be slower. When the IIR
constant value is closer to 1.0, then the filter response will be faster.
#set_IR_constant=<0-1>
Peak detector type - Configuring the type of algorithm which is used to detect the peaks in the
radar echo curve. The default setting should be Maximum peak. In specific cases, such as
when water level needs to be measured, but there is a lot of vegetation protruding from the
water surface, Last peak detector type should be used. This setting is available on units with
firmware versions greater than 2.3.2.
#set_peak_detector=0 (Maximum peak)
#set_peak_detector=1 (Last peak)
7.3.3 CHANGE PROCESSING PARAMETERS:
Level unit: The measurement unit used to report the measured level value. The default
measurement unit is millimetres. When changing the measurement unit, it’s important to
make sure that other parameters which depend on the measurement unit (such as active
zone parameters) are also changed to the new unit. The measurement unit used to report
the measured level
#set_unit=0 (mm)
#set_unit=1 (cm)
#set_unit=2 (m)
#set_unit=3 (in)
#set_unit=4 (ft)
Level offset - Changes the measurement level offset. This value should not be changed.
#set_level_offset=<value>
Amplitude threshold - Sets the minimum amplitude of the spectral peak in signal analysis
algorithm required to detect peak and report distance. If no peak above this value is