8.4. Add a coefficient
The correction coefficient allows to adjust the transmitter according to data in pressure of the installation.
How to calculate it? For example, the pressure in your section is 20 Pa and the transmitter displays 18 Pa. The coefficient
to apply is 20 / 18, it means 1.111.
The transmitter is powered on.
➢ Press OK.
➢ Enter the activation code (see page 9).
➢ Press OK.
➢ Press Up key to go to F 500 folder.
➢ Press OK.
➢ Press Up key to go to F 520 folder then press OK.
“F 520” blinks corresponding to the folder of the gain setting for the channel 1.
➢ Press OK.
The 1
st
digit of the gain blinks.
➢ Enter with Up and Down keys the figure value or the negative sign of the value then press OK.
The 2
nd
digit blinks.
➢ Enter with Up and Down keys its value then press OK.
➢ Perform the same procedure for the following figures.
➢ Press OK when the last digit has been set.
F 520 blinks, the coefficient for the channel 1 is set.
To add a gain to the channel 2, go to F 530 folder and perform the same procedure as for the channel 1.
To add a gain to the channel 3, go to F 540 folder and perform the same procedure as for the channel 1.
8.5. Add an offset
In order to compensate any possible drift of the sensor, it is possible to add an offset to the value displayed by the
transmitter entering a digital value via the keypad.
The transmitter is powered on.
➢ Press OK.
➢ Enter the activation code (see page 9).
➢ Press OK.
➢ Press Up key to go to F 500 folder.
➢ Press OK.
➢ Press Up key to go to F 521 folder then press OK.
“F 521” blinks, corresponding to the folder of the offset setting for the channel 1.
➢ Press OK.
The 1
st
digit of the offset blinks.
➢ Enter with Up and Down keys the figure value or the negative sign of the value then press OK.
The 2
nd
digit blinks.
➢ Enter with Up and Down keys its value then press OK.
➢ Perform the same procedure for the following figures.
➢ Press OK when the last digit has been set.
F 521 blinks, the offset for the channel 1 is set.
To add an offset to the channel 2, go to F 531 folder and perform the same procedure as for the channel 1.
To add an offset to the channel 3, go to F 541 folder and perform the same procedure as for the channel 1.
F 500: Set the pressure measurement 21
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