Flexim PIOX S72 Series, Руководство по эксплуатации

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14 User modes
PIOX S72* 14.3 SuperUser mode and SuperUser ext. mode
145
UMPIOX_S72xV1-9EN, 2022-05-15
14.3.3 Linear calibration
It is possible to define a correction of the flow velocity:
v
cor
= m · v + n
where
All quantities derived from the flow velocity will be calculated with the corrected flow velocity.
• Select the menu item
Special settings
in the program branch
Options
.
• Press ENTER until the menu item
Linear calibration
is displayed.
• Select
Off
to measure without linear calibration.
• Select
Default
if no customized inputs are to be made.
• Select
On
to define the values for the calibration.
• Press ENTER.
• Enter the factor for the linear calibration.
• Press ENTER.
• Enter the offset for the linear calibration.
• Press ENTER.
v – measured flow velocity
m – factor, range: -2...+2
n – offset, range: -12…+12 cm/s
v
cor
– corrected flow velocity
Notice!
It will not be displayed during the measurement that the correction of the flow velocity is activated.
Options\Special settings\Linear calibration
Options\...\Factor
Options\...\Offset
Example
factor: 1.1
offset: -10 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
factor: -1
offset: 0
Only the sign of the measured values changes.
Notice!
The correction data will not be stored until a measurement is started.
If the transmitter is switched off without starting a measurement, the entered correction data will be lost.