18 SuperUser mode
FLUXUS F60* 18.5 Upper limit of the sound speed
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UMFLUXUS_F60xV5-0EN, 2017-10-16
• Enter for each measuring channel the max. signal amplification. Enter zero to measure
without a limit of the signal amplification.
• Press ENTER.
The current value of the amplification (GAIN=) can be displayed in the upper line in the
program branch Measuring. If the current value of the amplification is higher than the
max. amplification, the current value is displayed with →FAIL!.
18.5 Upper limit of the sound speed
When the plausibility of the signal is evaluated, it will be checked whether the sound
speed is within a defined range. The used upper limit of the fluid sound speed is calculat-
ed from the greatest of the following values:
• fixed upper value, default: 1848 m/s
• value of the sound speed curve of the fluid at the operating point plus offset, default off-
set: 300 m/s
In the SuperUser mode, the values can be defined for fluids that are not contained in the
data set of the transmitter.
• Select Special Funct.\SYSTEM settings\Measuring\Miscellaneous.
• Press ENTER until the menu item Bad soundspeed is displayed.
• Enter for each measuring channel the fixed upper limit of the sound speed. Enter zero
to use the default value of 1848 m/s.
• Press ENTER.
Special Funct.\SYSTEM settings\Measuring\Miscellaneous\
Gain threshold\Fail if > 90 dB
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