Flexim FLUXUS F502BT, Руководство по эксплуатации

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17 SuperUser mode
FLUXUS F502TE 17.3 Limit of the signal amplification
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UMFLUXUS_F502TEV1-5EN, 2020-05-29
• If on is selected, enter the slope. The input of zero deactivates the correction.
• Press ENTER.
• Enter the offset. Enter zero to work without offset.
• Press ENTER.
17.3 Limit of the signal amplification
In order to prevent disturbing and/or pipe wall signals (e.g., if the pipe has run empty) from being interpreted as useful
signals, it is possible to define a max. signal amplification. If the signal amplification is above the max. signal amplification,
• the measured value will be marked as invalid. The physical quantity cannot be determined.
• a hash symbol (
#
) will be displayed after the unit of measurement (in case of a normal error, an interrogation point (
?
) is
displayed).
• Select the menu item Special Funct.\SYSTEM settings\Measuring .
• Press ENTER until the menu item Gain threshold is displayed.
• Enter the max. signal amplification for each measuring channel. Enter zero to measure without signal amplification limit.
• Press ENTER.
The current value of the amplification (
GAIN ) can be displayed in the upper line in the program branch Measuring . If the
current signal amplification value exceeds the max. amplification, it is followed by →FAIL! .
Special Funct.\...\Calibrat. data\...\Calibration\Slope
Special Funct.\...\Calibrat. data\...\Calibration\Offset
Example
Slope : 1.1
Offset : -10.0 cm/s = -0.1 m/s
If a flow velocity v = 5 m/s is measured, before the calculation of the derived quantities it will be corrected as follows:
v
cor
= 1.1 · 5 m/s - 0.1 m/s = 5.4 m/s
Example
Slope : -1.0
Offset : 0.0
Only the sign of the measured values changes.
Notice!
The correction data will not be stored before a measurement is started. If the transmitter is switched off without starting
a measurement, the entered correction data will be lost.
Notice!
The correction of the flow velocity remains activated after the deactivation of the SuperUser mode.
Special Funct.\SYSTEM settings\Measuring\Miscellaneous\Gain threshold
Special Funct.\SYSTEM settings\Measuring\Miscellaneous\Gain threshold\Fail if > 90 dB